Intelligent temperature control device for mass concrete construction

Abstract

The utility model discloses an intelligent temperature control device for mass concrete construction. Comprising a cooling water pipeline; a sensing module; the acquisition module is arranged near cast-in-place concrete; the acquisition module is electrically connected with the sensing module; a cooling water tank module is arranged at the top of the container, and cooling equipment, a circulating pump set module, a flow control module, a reversing control module, a PLC control module and a temperature control management platform are arranged in the container. A cooling coil communicated with cooling equipment is arranged in the cooling water tank module, and the cooling water tank module is externally connected with a water replenishing module; the circulating pump set module is communicated with the cooling water tank module, and the flow control module is arranged on the circulating pump set module; the reversing control module is connected to the circulating pump set module; the reversing control module is connected with a cooling water pipeline; the PLC control module is connected with the acquisition module, the cooling equipment, the circulating pump set module, the flow control module and the reversing control module; and the temperature control management platform is connected with the acquisition module and the PLC control module.

Description

Technical Field

[0001] This utility model relates to the field of temperature control technology for large-volume concrete construction, and in particular to an intelligent temperature control device for large-volume concrete construction. Background Technology

[0002] Concrete structures such as base slabs and sidewalls are widely used in water conservancy, building construction, and municipal engineering, such as sluice gates, lock base slabs, pump station channel base slabs, sidewalls, and building foundation floors. Compared with other large-volume hydraulic concrete structures, these structures have the following significant characteristics: (1) The thickness dimension is significantly smaller than the planar dimension, and the structural form is special; (2) The concrete strength grade is high, the cement content is large, the hydration heat release rate is large, the heat release is large, and the shrinkage is large; (3) The foundation is mostly a soft, flexible foundation rather than a rigid foundation. These structures are very prone to cracking during construction. From the current situation, the causes of cracking can be roughly divided into two categories. The first type of cracking is caused by the shrinkage of concrete, mainly due to the stress generated by the structural temperature drop deformation, superimposed self-shrinkage, and drying shrinkage deformation under the constraint of the stress exceeding the strength of the concrete itself; the second type of cracking is caused by the uneven deformation of the foundation. At present, the main means to avoid cracking of such structures is to set permanent joints in the structure or to circulate cooling water in the structure to regulate the temperature change between the inside and outside of the structure.

[0003] Currently, the measures to control the temperature stress and concrete deformation caused by the heat of cement hydration are to pre-embed cooling water pipes and monitoring sensing modules in the concrete, and adjust the cooling water supply according to the sensor monitoring during the curing process. However, the current problems are that the integration and automation of temperature control devices are low, with each module distributed in different locations. On-site operation is mainly manual and semi-automated, resulting in insufficient timeliness of operation and making it easy to fail to deal with abnormal situations in time, which is not conducive to the control of concrete construction quality, especially at night. Furthermore, the cooling water devices and data acquisition devices on the ground are of different forms, and the acquisition system is also customized according to the project. The parameters cannot be standardized and cannot be reused in other projects, resulting in a waste of resources. Utility Model Content

[0004] Therefore, this utility model proposes an intelligent temperature control device for large-volume concrete construction, which aims to solve the problems of low integration, modularity, and standardization of existing devices, as well as the inability to reuse temperature control devices for different projects.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] A smart temperature control device for large-volume concrete construction includes: cooling water pipes embedded in the concrete; sensing modules distributed at various measuring points on the concrete; a data acquisition module located near the concrete being poured on-site; the data acquisition module being electrically connected to the sensing modules; and a container with a cooling water tank module on its outer top, the interior of which is equipped with cooling equipment, a circulating pump module, a flow control module, a reversing control module, a PLC control module, and a temperature control management platform; wherein: the cooling water tank module contains cooling coils connected to the cooling equipment, and the cooling water tank module is externally connected to a… The system includes a water replenishment module; a circulating pump module connected to the cooling water tank module; a flow control module mounted on the circulating pump module; a reversing control module connected to the circulating pump module, controlling the output or return flow of the circulating pump module; a reversing control module connected to the cooling water pipeline; a PLC control module connected to the data acquisition module, the cooling equipment, the circulating pump module, the flow control module, and the reversing control module, and controlling the operation of each module; and a temperature control management platform connected to the data acquisition module and the PLC control module.

[0007] Preferably, the cooling water tank module is connected to an overflow pipe, a vent pipe, and a first remote temperature sensor, and the cooling water tank module is equipped with a submersible water level gauge and multiple layers of cooling coils; the first remote temperature sensor detects the water temperature in the cooling water tank module and transmits the detection data to the PLC control module, the PLC control module controls the cooling equipment to transmit detection data to the PLC control module based on the data transmitted back by the remote temperature sensor; the submersible water level gauge is connected to the PLC control module.

[0008] Preferably, the circulating pump module includes a water pump, an inlet pipe, an outlet pipe, a check valve, a remote pressure gauge, and a control cabinet; wherein: the inlet pipe is connected to the cooling water tank module; the inlet pipe is connected to N water pumps to form N main lines, each main line is equipped with a remote pressure gauge and a check valve, and M outlet pipes are connected below the check valve to form M branch lines; the control cabinet is located on the side, and the control cabinet is equipped with a control system to connect to each of the remote pressure gauges.

[0009] Preferably, at the end of each of the M branches, a first interface located on the upper layer and a second interface located on the lower layer are respectively connected, and: the first interface is connected to a first return water branch pipe through a first ball valve; the second interface is connected to a second return water branch pipe through a second ball valve; and the first and second return water branch pipes are connected together at their ends to a return water main pipe, which extends into the cooling water tank module; the branch is connected to and controlled by the first and second interfaces respectively through a third and a fourth ball valve; the PLC control module is connected to and controls the first, second, third, and fourth ball valves; a remote temperature sensor is provided at both the first and second interfaces, and the remote temperature sensor transmits the sensed temperature to a data acquisition device, which is connected to and transmits the temperature to the temperature control management platform.

[0010] Preferably, the flow control module includes M electric valves with adjustable opening and M flow meters, with the electric valves and the flow meters respectively installed on one of the branches.

[0011] Preferably, the cooling water pipeline includes a steel pipe, a fire hose, and a quick connector. The fire hose is fitted inside the steel pipe, the steel pipe is laid and cast in concrete, and the quick connector connects the end of the fire hose to the first interface and the second interface.

[0012] Preferably, the sensing module includes several temperature sensors, several stress sensors, and several hydraulic five-core cables. The temperature sensors and the stress sensors are pre-embedded in the concrete and connected to the acquisition module through the hydraulic five-core cables.

[0013] Preferably, the acquisition module includes a power adapter, a temperature acquisition instrument connected to each of the temperature sensors, a stress acquisition instrument connected to each of the stress sensors, and a communication module, wherein the communication module is connected to the PLC control module and the temperature control management platform.

[0014] Preferably, the PLC control module includes PLC hardware, a core switch, and a logic program imported into the PLC hardware.

[0015] Preferably, the temperature control management platform includes a large display screen, a server, and installed management software.

[0016] The advantages of this utility model due to the adoption of the above technical solution are as follows:

[0017] 1. It has a high degree of integration, modularity, and standardization. The main modules are installed inside the container and can be reused in different projects;

[0018] 2. The structure is compact and easy to install, facilitating transportation and on-site disassembly and assembly;

[0019] 3. Real-time online monitoring of data and automatic control of circulating water temperature can be achieved through PLC and temperature control management platform. It has a high degree of intelligence and automation, and can effectively control the hydration heat temperature rise of large-volume concrete in a timely manner to prevent cracks. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the container layout for this application.

[0021] Figure 2 This is a schematic diagram of the elevation of the container and water tank in this application.

[0022] Figure 3 This is a schematic diagram of the cooling coil inside the water tank in this application.

[0023] Figure 4 This is a schematic diagram of one embodiment of this application.

[0024] Figure 5 This is a schematic diagram of the arrangement of cooling water pipes and sensing modules in this application.

[0025] Figure 6 This is a schematic diagram of the principle structure of this application. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] See Figure 6 As shown, the intelligent temperature control device for large-volume concrete construction of this utility model mainly includes: a cooling water tank module 1, a circulating pump group module 2, a flow control module 3, a reversing control module 4, a cooling water pipeline 5, a sensing module 6, a data acquisition module, a PLC control module 7, a temperature control management platform 8, a water replenishment module 9, a cooling equipment 10, and a container 11, etc.

[0028] like Figure 4As shown, the cooling water tank module 1 is installed on top of the container 11. The cooling equipment 10 is installed inside the container 11. The cooling water tank module 1 has three layers of cooling coils 12, which are connected to the cooling equipment 10. The cooling equipment 10 and the cooling coils 12 are used to regulate the water temperature inside the cooling water tank module 1. The cooling water tank module 1 is equipped with a first remote temperature sensor, which senses the temperature inside the cooling water tank module 1 and communicates with the PLC control module 7 via an analog input module. When the PLC control module 7 detects that the data collected by the remote temperature sensor is higher than the design data, it automatically starts the cooling equipment to cool the water in the tank. When the water temperature drops to a value within the design data range, the cooling equipment stops. The PLC control module 7 is connected to the temperature control management platform 8 via 485 communication to display the monitored data in real time.

[0029] The cooling water tank module 1 is connected to an overflow pipe 13 and an vent pipe 14 to facilitate overflow and emptying of the tank. The cooling water tank module 1 is equipped with a submersible water level gauge and is connected to the water supply module. The submersible water level gauge is connected to the PLC control module 7 to display the water level in real time.

[0030] like Figure 1 and Figure 2 In the embodiment shown, the circulating pump module 2 includes a water pump 21, an inlet pipe 22, an outlet pipe 23, a check valve 24, a remote pressure gauge 25, and a control cabinet 26.

[0031] The inlet pipe 22 connects to the cooling water tank module 1. The inlet pipe 22 is connected to three water pumps 21 to form three main lines. Each main line is equipped with a remote pressure gauge 25 and a check valve 24. Eight outlet pipes 23 are connected below the check valves 24, forming eight branch lines. The control cabinet 26 is located to the side and contains a control system connected to each of the remote pressure gauges 25. The control cabinet 26 is used to manually control the start and stop of the circulating water pumps.

[0032] Combination Figure 6 , Figure 1 and Figure 2 As shown, at the end of each of the eight branches, a first interface 27 located on the upper layer and a second interface 28 located on the lower layer are respectively connected. Each first interface 27 is connected to a first return water branch pipe 291, and each second interface 28 is connected to a second return water branch pipe 292. The first return water branch pipe 291 and the second return water branch pipe 292 are connected at their ends to a return water main pipe 29. The return water main pipe 29 extends into the cooling water tank module and is kept as far away as possible from the outlet of the cooling water tank module 1 to prevent the return water from being drawn out before it has cooled down.

[0033] The reversing control module 4 includes multiple ball valves, a remote temperature sensor, and a data acquisition unit. By controlling the ball valves, the reversing control module 4 can periodically switch between the first interface 27 and the second interface 28 on the branch, changing them to either the inlet or outlet water supply. This prevents large temperature fluctuations in the concrete at the inlet due to constant water intake at one port, which could cause shrinkage and cracking. Specifically, a first ball valve 41 is installed between the first interface 27 and the first return water branch pipe 291; a second ball valve 42 is installed between the second interface 28 and the second return water branch pipe 292; a third ball valve 43 is installed between the branch and the first interface 27; and a fourth ball valve 44 is installed between the branch and the second interface 28.

[0034] The PLC control module 7 connects to and controls the first ball valve 41, the second ball valve 42, the third ball valve 43, and the fourth ball valve 44. A remote temperature sensor 210 is installed at both the first interface 27 and the second interface 28. The remote temperature sensor 210 monitors the temperature of the inlet and outlet water in each branch and transmits the sensed temperature to a data acquisition unit 211. The data acquisition unit 211 connects to and transmits the data to the temperature control management platform 8, which displays the data in real-time on a large screen for management personnel to view.

[0035] The flow control module 3 includes three electric valves 31 with adjustable opening and eight flow meters 32, with the electric valves 31 and the flow meters 32 respectively installed on one of the branches.

[0036] The three water pumps 21, remote pressure gauge 25, remote temperature sensor 210, and electric valve 31 and flow meter 32 of the flow control module 3 in the circulating pump group module 2 all communicate with the PLC control module 7 through the input / output module. The temperature control management platform 8 communicates with the acquisition module via 485. The temperature control management platform 8 analyzes and processes the data from the acquisition module. If the temperature difference between adjacent characteristic points (data acquisition points) and the temperature difference between the inside and outside of the concrete exceeds 25℃, the temperature control management platform 8 sends a control command to the PLC control module 7. The PLC control module 7 first controls the opening of the electric valve 31 of the flow control module 3 to adjust the flow rate of the circulating water. The flow meter 32 is used to monitor the flow rate of the circulating water. If the requirements are not met, the temperature control management platform 8 pushes alarm information to the relevant personnel, who can then choose to increase or decrease the number of water pumps in operation. The remote pressure gauge 25 is connected to the PLC control module 7. If the pressure of the circulating water pipe is detected to be greater than 0.9MPa, the electric valve 31 on the branch line opens to release pressure, thereby ensuring the safe operation of the pipeline.

[0037] The cooling water pipeline 5 includes steel pipes, fire hoses, and quick couplings. Before construction, a pipeline layout diagram is drawn up based on the actual site conditions, specifications, and design requirements. According to the layout diagram, the pipelines are pre-embedded in concrete. The fire hose is fitted inside the steel pipe, which is then laid and cast in concrete. The quick coupling connects the end of the fire hose to the first interface 27 and the second interface 28 to transport cooling water.

[0038] The sensing module 6 includes several temperature sensors, several stress sensors, and several hydraulic five-core cables. The temperature sensors and stress sensors are pre-embedded in the concrete along with the cooling water pipes 5. The temperature sensors and stress sensors are connected to the acquisition module 7 through the hydraulic five-core cables. During the installation process, the status of the temperature sensors and stress sensors needs to be checked regularly. The temperature sensors and stress sensors are used to monitor the temperature and strain values ​​at various characteristic points in the concrete in real time.

[0039] In addition, the acquisition module includes a power adapter, a temperature acquisition instrument connected to each of the temperature sensors, a stress acquisition instrument connected to each of the stress sensors, and a communication module. The communication module is connected to the PLC control module 7 and the temperature control management platform 8.

[0040] The PLC control module includes PLC hardware, a core switch, and logic programs imported into the PLC hardware. The PLC control module 7 communicates with the cooling water tank module 1, circulating pump group module 2, flow control module 3, reversing control module 4, and water supply module 9 via input / output modules, and also communicates with the temperature control management platform 8 via RS-485. The PLC contains pre-programmed logic programs that compare the actual temperature data collected on-site with the designed data to automatically control the operating status of the cooling water tank module 1, circulating pump group module 2, flow control module 3, reversing control module 4, and water supply module 9.

[0041] The temperature control management platform 8 includes a large display screen, a server, and management software. The large display screen is used to display the data collected by the data acquisition instrument and the data acquisition module. The server is equipped with management software, which is used to analyze and process the collected data, issue control commands to the PLC control module 7 according to the set temperature threshold, and push alarm information to relevant personnel for timely handling of abnormal situations.

[0042] The water replenishment module 9 includes a water replenishment pump, a float valve, and pipelines. The float valve communicates with the PLC control module 7 via an input module, and the water replenishment pump communicates with the PLC control module 7 via an output module. The start and stop water level data of the water replenishment pump are set in the PLC program. When the float valve detects that the water level in the tank is lower than 0.5m, the PLC control module 7 automatically starts the water replenishment pump to replenish water into the tank. When the float valve detects that the water level in the tank is higher than 1.3m, the PLC control module 7 controls the water replenishment pump to stop, so as to ensure sufficient circulating water in the tank.

[0043] During implementation, several temperature and stress sensors are pre-installed within the concrete, arranged in three layers (top, middle, and bottom). Additional temperature sensors are installed on the concrete surface. All sensors operate simultaneously, and data is transmitted via a data acquisition module to a temperature control management platform 8. This platform performs real-time online analysis and processing, and uses a PLC control module 7 to control on-site equipment and valves. This rapid response significantly improves temperature control efficiency and is crucial for temperature control and crack prevention in large-volume concrete. Data transmission utilizes standard communication interfaces and protocols, and modules are interconnected through logical relationships. While these relationships are complex, the logical sequence is clever, greatly reducing manual operation and intervention. The system boasts a high degree of informatization, automation, and intelligence. On-site equipment and pipelines are modularized and standardized, highly integrated, easy to install and dismantle, require minimal floor space, and are convenient to transport. Most importantly, it solves the problems of low integration, diverse forms, and inability to be reused in other projects associated with existing temperature control devices. This system can be used for temperature control of large-volume concrete in various fields.

[0044] The embodiments described above are for illustrative purposes only and are not intended to limit the scope of this utility model. All equivalent changes and modifications made to this utility model by those skilled in the art should fall within the scope of the appended claims.

Claims

1. A mass concrete construction intelligent temperature control device, characterized in that, include: Cooling water pipes are embedded in concrete; The sensing modules are distributed at various measuring points on the concrete. The data acquisition module is located near the concrete pouring site; the data acquisition module is electrically connected to the sensing module. The container has a cooling water tank module on its outer top. The interior of the container houses cooling equipment, a circulating pump module, a flow control module, a reversing control module, a PLC control module, and a temperature control management platform. Among these components: The cooling water tank module is equipped with a cooling coil that is connected to the cooling equipment, and a water supply module is connected to the outside of the cooling water tank module. The circulating pump module is connected to the cooling water tank module, and the flow control module is located on the circulating pump module; The reversing control module is connected to the circulating pump module, and the reversing control module controls the output or return flow of the circulating pump module; the reversing control module is connected to the cooling water pipeline; The PLC control module is connected to the acquisition module, the cooling equipment, the circulating pump module, the flow control module, and the reversing control module, and controls the operation of each module. The temperature control management platform is connected to the data acquisition module and to the PLC control module.

2. The intelligent temperature control device for mass concrete construction according to claim 1, wherein, The cooling water tank module is connected to an overflow pipe, a vent pipe and a first remote temperature sensor, and the cooling water tank module is equipped with an immersion water level gauge and multiple layers of the cooling coils. The first remote temperature sensor detects the water temperature in the cooling water tank module and transmits the detection data to the PLC control module. The PLC control module controls the cooling equipment based on the data transmitted back by the remote temperature sensor. The submersible water level gauge is connected to the PLC control module.

3. The intelligent temperature control device for mass concrete construction of claim 1, wherein, The circulating pump module includes a water pump, an inlet pipe, an outlet pipe, a check valve, a remote pressure gauge, and a control cabinet; wherein: the inlet pipe is connected to the cooling water tank module; the inlet pipe is connected to N water pumps to form N main lines, each main line is equipped with a remote pressure gauge and a check valve, and M outlet pipes are connected below the check valve to form M branch lines; the control cabinet is located on the side, and the control cabinet is equipped with a control system to connect to each of the remote pressure gauges.

4. The intelligent temperature control device for mass concrete construction of claim 3, wherein, At the end of each of the M branches, a first interface located on the upper layer and a second interface located on the lower layer are respectively connected, and: The first interface is connected to a first return water branch pipe via a first ball valve; The second interface is connected to a second return water branch pipe via a second ball valve; and the first return water branch pipe and the second return water branch pipe are connected to a return water main pipe at their ends, the return water main pipe extending into the cooling water tank module; The branch is connected to and controlled by the first interface and the second interface respectively via a third ball valve and a fourth ball valve; The PLC control module connects to and controls the first ball valve, the second ball valve, the third ball valve, and the fourth ball valve; Both the first interface and the second interface are equipped with a remote temperature sensor. The remote temperature sensor transmits the sensed temperature to a data acquisition device, which is connected to and transmits the temperature to the temperature control management platform.

5. The intelligent temperature control device for mass concrete construction of claim 4, wherein, The flow control module includes M electric valves with adjustable opening and M flow meters, with the electric valves and flow meters respectively installed on one of the branches.

6. The intelligent temperature control device for mass concrete construction of claim 4, wherein, The cooling water pipeline includes a steel pipe, a fire hose, and a quick connector. The fire hose is fitted inside the steel pipe, which is laid and cast in concrete. The quick connector connects the end of the fire hose to the first interface and the second interface.

7. The intelligent temperature control device for mass concrete construction of claim 1, wherein, The sensing module includes several temperature sensors, several stress sensors, and several hydraulic five-core cables. The temperature sensors and the stress sensors are pre-embedded in the concrete and connected to the acquisition module through the hydraulic five-core cables.

8. The intelligent temperature control device for mass concrete construction of claim 7, wherein, The acquisition module includes a power adapter, a temperature acquisition instrument connected to each of the temperature sensors, a stress acquisition instrument connected to each of the stress sensors, and a communication module. The communication module is connected to the PLC control module and the temperature control management platform. 9.The intelligent temperature control device for mass concrete construction of claim 1, wherein, The PLC control module includes PLC hardware, a core switch, and a logic program imported into the PLC hardware.

10. The intelligent temperature control device for large-volume concrete construction according to claim 1, characterized in that, The temperature control management platform includes a large display screen, a server, and installed management software.

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