Intelligent system for cooling mass concrete

Abstract

This utility model discloses an intelligent cooling system for large-volume concrete, including a cooling loop pipe installed in the pouring area of ​​the concrete to be poured. An intelligent water pump is installed at the inlet of the cooling loop pipe, and a thermometer is installed at the outlet. The intelligent water pump and the thermometer are respectively connected to a control module, and the control module, the intelligent water pump, and the thermometer are respectively connected to a power supply. The cooling loop pipe is S-shaped in the pouring area. The cooling loop pipe is supported above the bottom of the pouring area by multiple support frames, giving the supported cooling loop pipe a three-dimensional appearance. This utility model, by distributing the cooling loop pipe during concrete pouring and flexibly adjusting the intelligent water pump at the inlet based on the temperature readings from the outlet thermometer, controls the temperature difference between the inside and outside of the concrete within ±1℃ during pouring.

Description

Technical Field

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

[0002] Concrete releases a lot of heat when it sets. Excessive temperature can cause the internal structure to shrink, increasing the likelihood of cracking and thus weakening the strength of the concrete.

[0003] In building construction, concrete pouring is a crucial process. During pouring, the concrete releases a significant amount of heat due to its hydration reaction (the adiabatic temperature rise can reach 40-70℃ within 3-5 days). This sudden temperature change triggers severe shrinkage and deformation of the internal microstructure. When the tensile stress generated within the concrete exceeds its ultimate tensile strength (approximately 0.6-1.0 × 10⁻⁶), the concrete will collapse. -4 During curing, temperature gradient cracks will form between the surface and core areas. Initially, these tiny cracks, as small as 0.1 mm wide, will expand into penetrating fissures during the curing period, leading to a 20-30% decrease in the structural load-bearing capacity. Especially during the 3-7 day period, when the elastic modulus of concrete is rapidly increasing, the combined effect of temperature shrinkage stress and external constraints, if the curing humidity is below 80%, will cause the surface water loss rate to exceed the internal moisture migration rate, inducing network cracking. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an intelligent cooling system for large-volume concrete, which addresses the shortcomings of the prior art. By distributing cooling circuit pipes during concrete pouring and flexibly adjusting the intelligent water pump at the inlet based on the temperature readings detected by the thermometer at the outlet, the temperature difference between the inside and outside of the concrete during pouring is controlled within ±1℃.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an intelligent cooling system for large-volume concrete, including a cooling circuit pipe, which is installed in the pouring area of ​​the concrete to be poured. An intelligent water pump is installed at the inlet of the cooling circuit pipe, and a thermometer is installed at the outlet of the cooling circuit pipe. The intelligent water pump and the thermometer are respectively connected to a control module. The control module, the intelligent water pump, and the thermometer are respectively connected to a power supply.

[0006] Furthermore, the cooling circuit pipes are distributed in an S-shape within the casting area.

[0007] Furthermore, the cooling circuit pipe is supported above the bottom of the casting area by multiple support frames, and the supported cooling circuit pipe is in a three-dimensional state.

[0008] Furthermore, multiple support frames are evenly distributed in the casting area.

[0009] Furthermore, the outlet of the intelligent water pump is connected to an inlet pipe, the free end of which is connected to the inlet of the first hydroelectric generator. The outlet of the first hydroelectric generator is connected to the inlet of the cooling circuit pipe, and the first hydroelectric generator is electrically connected to the power source.

[0010] Furthermore, the inlet of the thermometer is connected to an outlet pipe, the free end of which is connected to the outlet of the second hydroelectric generator. The inlet of the second hydroelectric generator is connected to the outlet of the cooling circuit pipe, and the second hydroelectric generator is electrically connected to the power source.

[0011] Furthermore, the first hydroelectric generator and the second hydroelectric generator are electrically connected in parallel.

[0012] Furthermore, the control module is also connected to an external smart terminal via a wireless transmission module.

[0013] This utility model has the following advantages compared with the prior art:

[0014] This invention provides an intelligent cooling system for large-volume concrete. In modern large-volume concrete construction, the embedded temperature control system effectively solves the problem of temperature difference control. Specifically, before concrete pouring, bidirectional cooling loop pipes (usually made of stainless steel or HDPE) are pre-embedded. The pipes are arranged in a serpentine grid pattern, with the pipe spacing strictly controlled within the range of 30-50cm to ensure uniform heat conduction. High-precision temperature sensors (±0.1℃ accuracy) installed at the outlet collect data in real time. The intelligent water pump system dynamically adjusts the inlet water flow rate (adjustment range 5-20L / min) based on temperature difference feedback, forming a closed-loop temperature control system. When the internal and external temperature difference approaches the 8℃ threshold, the system automatically increases the flow rate to 1.5m / s, suppressing the maximum temperature rise rate inside the concrete to within 1.5℃ / h. When used in conjunction with a geotextile moisture-retaining curing layer (thickness ≥ 3 cm), this system can stably control the temperature difference between the inside and outside of the cast concrete within a range of ± 1℃. Verified in projects such as the Hong Kong-Zhuhai-Macau Bridge immersed tunnel, this system can reduce the incidence of temperature cracks from 25% with traditional methods to below 3%. In practical applications, special attention must be paid to the distance between the cooling pipes and the reinforcing steel protective layer (≥ 30 mm), and continuous water cooling should be maintained for at least 14 days after final setting. The growth curve of the concrete's elastic modulus should be monitored synchronously using a BIM system to achieve the coordinated development of temperature stress and structural strength.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of an intelligent cooling system for large-volume concrete provided by this utility model.

[0017] Figure 2 This is a schematic diagram showing the information transmission and connection of various electrical components in this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Intelligent water pump; 2. Inlet pipe; 3. First hydroelectric generator; 4. Cooling circuit pipe; 5. Pouring area; 6. Second hydroelectric generator; 7. Thermometer; 8. Outlet pipe; 9. Control module. Detailed Implementation

[0020] like Figure 1-2 As shown, the present invention provides an intelligent cooling system for large-volume concrete, including a cooling circuit pipe 4, which is installed in the pouring area 5 of the concrete to be poured. An intelligent water pump 1 is installed at the inlet of the cooling circuit pipe 4, and a thermometer 7 is installed at the outlet of the cooling circuit pipe 4. The intelligent water pump 1 and the thermometer 7 are respectively connected to a control module 9. The control module 9, the intelligent water pump 1, and the thermometer 7 are respectively connected to a power supply signal.

[0021] During construction, the cooling circuit pipe 4 is installed in the pouring area 5 where the concrete is to be poured. The power is turned on, and after approximately 3-5 minutes, concrete grouting begins. This powers the control module 9, the intelligent water pump 1, and the thermometer 7. The control module 9 controls the intelligent water pump 1 to adjust the water flow rate and receives the water temperature detected by the thermometer 7 in real time. Based on the water temperature detected by the thermometer 7, the module intelligently determines the required water flow rate and controls the intelligent water pump 1 to adjust the water flow rate accordingly. This achieves temperature control within ±1℃ for the large volume, reduces water waste, and enables unattended cooling construction. After pouring is completed, the cooling circuit pipe 4 is sealed with grout.

[0022] In modern large-volume concrete construction, this utility model employs an embedded temperature control system to effectively solve the problem of temperature difference control. Specifically, bidirectional cooling loop pipes (usually made of stainless steel or HDPE) are pre-embedded before concrete pouring. High-precision temperature sensors (±0.1℃ accuracy) installed at the outlet collect data in real time. An intelligent water pump system dynamically adjusts the inlet water flow rate (adjustment range 5-20L / min) based on temperature difference feedback, forming a closed-loop temperature control system. When the internal and external temperature difference approaches the 8℃ threshold, the system automatically increases the flow rate to 1.5m / s, suppressing the maximum temperature rise rate inside the concrete to within 1.5℃ / h. When used in conjunction with a geotextile moisture-retaining curing layer (thickness ≥3cm), this system can stably control the internal and external temperature difference within the ±1℃ range. Verified in projects such as the Hong Kong-Zhuhai-Macau Bridge immersed tunnel, this type of system can reduce the incidence of temperature cracks from 25% with traditional methods to below 3%. In practical applications, special attention should be paid to the distance between the cooling pipe and the concrete cover of the reinforcing steel (≥30mm), and water cooling should be continuously provided for more than 14 days after final setting. The growth curve of the elastic modulus of concrete should be monitored synchronously through the BIM system to achieve the coordinated development of temperature stress and structural strength.

[0023] In this invention, the cooling circuit pipes 4 are arranged in an S-shape within the casting area 5. The pipes are laid out in a serpentine grid pattern, with the spacing between pipes strictly controlled within the range of 30-50cm to ensure uniform heat conduction.

[0024] For further optimization, the cooling circuit pipe 4 is supported above the bottom of the casting area 5 by multiple support frames, giving the supported cooling circuit pipe 4 a three-dimensional form. This ensures uniform heat conduction in the vertical direction. The multiple support frames are evenly distributed within the casting area 5.

[0025] In this utility model, a power generation unit is also added, which generates electricity through the water flow used for cooling in the original utility model. The outlet of the intelligent water pump 1 is connected to the inlet pipe 2, and the free end of the inlet pipe 2 is connected to the inlet of the first hydroelectric generator 3. The outlet of the first hydroelectric generator 3 is connected to the inlet of the cooling circuit pipe 4, and the first hydroelectric generator 3 is electrically connected to the power source.

[0026] Furthermore, the inlet of the thermometer 7 is connected to an outlet pipe 8, the free end of which is connected to the outlet of the second hydroelectric generator 6. The inlet of the second hydroelectric generator 6 is connected to the outlet of the cooling circuit pipe 4, and the second hydroelectric generator 6 is electrically connected to the power source.

[0027] Furthermore, the first hydroelectric generator 3 and the second hydroelectric generator 6 are electrically connected in parallel.

[0028] This invention utilizes two hydroelectric generators, the first hydroelectric generator 3 and the second hydroelectric generator 6, to generate electricity from the water flow originally used for cooling. The generated electricity is then stored in a power source and used to supply power to other components, thereby making use of existing resources. At the same time, the parallel connection ensures the stability of the power storage.

[0029] In this invention, the power supply has an integrated module for receiving and converting the electrical energy generated by the two hydroelectric generators.

[0030] In this invention, the control module 9 is also connected to an external smart terminal via a wireless transmission module. The smart platform is also a smart terminal, enabling real-time display, real-time background monitoring, and alarm alerts when warning values ​​are exceeded.

[0031] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A mass concrete cooling intelligent system, characterized in that, The system includes a cooling circuit pipe (4), which is installed in the pouring area (5) of the concrete to be poured. A smart water pump (1) is installed at the inlet of the cooling circuit pipe (4), and a thermometer (7) is installed at the outlet of the cooling circuit pipe (4). The smart water pump (1) and the thermometer (7) are respectively connected to the control module (9) via signal. The control module (9), the smart water pump (1), and the thermometer (7) are respectively connected to the power supply signal.

2. The intelligent system for cooling mass concrete according to claim 1, wherein The cooling circuit pipe (4) is distributed in an S-shape within the casting area (5).

3. The intelligent system for cooling mass concrete according to claim 2, wherein The cooling circuit pipe (4) is supported above the bottom of the casting area (5) by multiple support frames, and the supported cooling circuit pipe (4) is in a three-dimensional state.

4. The intelligent system for cooling mass concrete according to claim 3, wherein Multiple support frames are evenly distributed in the pouring area (5).

5. The intelligent cooling system for large-volume concrete according to claim 1, characterized in that, The outlet of the intelligent water pump (1) is connected to the inlet pipe (2), the free end of the inlet pipe (2) is connected to the inlet of the first hydroelectric generator (3), the outlet of the first hydroelectric generator (3) is connected to the inlet of the cooling circuit pipe (4), and the first hydroelectric generator (3) is electrically connected to the power source.

6. The intelligent cooling system for large-volume concrete according to claim 5, characterized in that, The inlet of the thermometer (7) is connected to the outlet pipe (8), and the free end of the outlet pipe (8) is connected to the outlet of the second hydroelectric generator (6). The inlet of the second hydroelectric generator (6) is connected to the outlet of the cooling circuit pipe (4), and the second hydroelectric generator (6) is electrically connected to the power source.

7. The intelligent cooling system for large-volume concrete according to claim 6, characterized in that, The first hydroelectric generator (3) and the second hydroelectric generator (6) are electrically connected in parallel.

8. The intelligent cooling system for large-volume concrete according to claim 1, characterized in that, The control module (9) is also connected to an external smart terminal signal via a wireless transmission module.

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