Temperature control system for mass concrete construction

Abstract

A temperature control system for mass concrete construction relates to the technical field of constructional engineering and comprises a controller, a temperature and humidity sensor, a condensate pipe and a pump, the condensate pipe is used for being bound and fixed with a reinforcement cage in a component and comprises a cross-linked polyethylene pipe arranged on the inner layer and a metal protective pipe arranged on the outer layer, and the temperature and humidity sensor is arranged on the cross-linked polyethylene pipe. The water inlet end of the condensate pipe is connected with the water output end of a pump, the water input end of the pump is connected with the water outlet pipe of a condensate water tank, the water inlet pipe of the condensate water tank is connected with the water outlet end of the condensate pipe, the condensate pipe is connected with a temperature and humidity sensor, and the temperature and humidity sensor and the pump are electrically connected with a controller through wires. The maintenance quality of the large concrete member can be effectively guaranteed, and construction safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a temperature control system for large-volume concrete construction. Background Technology

[0002] This new type of large-volume concrete refers to large-volume concrete components such as locks, pump station foundations, and bridge abutments. To prevent cracking, the following measures are typically adopted: 1. Setting up post-pouring strips; 2. Laying condensate pipes during pouring; 3. Optimizing the mix proportion to reduce cement usage, etc. However, while these measures solve most of the cracking problems, they still cannot achieve ideal crack resistance. The condensate pipes are mostly made of thin-walled steel pipes, posing a risk of breakage during construction. Once a steel pipe breaks, cooling water can easily enter the component, leading to curing failure and even reducing structural strength. Therefore, it is necessary to design a temperature control system for large-volume concrete construction to improve upon the poor temperature control performance and safety hazards of existing technologies.

[0003] Utility model application CN 220413223 U, filed on July 25, 2023, discloses a dynamic mixer for preparing modified ammonium nitrate explosives, comprising: a base plate, support legs, a rotating rod, an inner cylinder, a capillary tube, and an outer shell. By incorporating a condensate tank, a capillary tube, an inlet pipe, an outlet pipe, and a conveying mechanism, low-temperature water from the condensate tank flows over the surface of the inner cylinder for heat exchange, thereby cooling the inner cylinder. Paragraph 0029 of the specification describes the conveying mechanism as a water pump; paragraph 0031 states that "first, the condensate tank and water pump are started, and the condensate tank can condense and cool the water inside," indicating that the prior art has already disclosed that a condensate tank can cool the water inside.

[0004] Patent document CN212109198U discloses a cooling device for breadcrumbs, including a vertically placed cooling vessel and a sealed lid located on top of the cooling vessel. A cooling inner cylinder is concentrically arranged inside the cooling vessel and is fixedly installed on the bottom surface of the sealed lid. A coiled condenser tube is provided inside the cooling inner cylinder. The condenser tube is circulated and connected to a condensate tank through an inlet pipe and an outlet pipe. A circulating water pump is also provided on the inlet pipe. Using the above technical solution, the breadcrumbs to be cooled are placed in the cooling vessel, and the condensate in the condensate tank is circulated and cooled by the circulating water pump through the condenser tube inside the cooling vessel. Utility Model Content

[0005] This invention provides a temperature control system for large-volume concrete construction, aiming to solve the problem described in the background section: "existing temperature control measures are not effective and pose safety hazards".

[0006] To achieve the above objectives, the technical solution of this invention is as follows:

[0007] A temperature control system for large-volume concrete construction includes a controller, a temperature and humidity sensor, a condensate pipe, and a pump. The condensate pipe is used to bind and fix the concrete to the reinforcing cage inside the component. The condensate pipe includes a cross-linked polyethylene pipe as an inner layer and a metal protective pipe as an outer layer. The inlet end of the condensate pipe is connected to the water outlet end of the pump. The water inlet end of the pump is connected to the outlet pipe of the condensate tank. The inlet pipe of the condensate tank is connected to the outlet end of the condensate pipe. A temperature and humidity sensor is connected to the condensate pipe. The temperature and humidity sensor and the pump are electrically connected to the controller via wires.

[0008] Preferably, the metal protective tube is made of stainless steel.

[0009] Preferably, the metal protective tube is a shaped metal gooseneck tube.

[0010] Preferably, the inlet end of the condensate pipe is connected to a first connecting pipe via a first connector, the first connecting pipe is connected to the water output end of the pump, a branch pipe is provided on the first connecting pipe, and a pressure gauge for detecting water pressure is installed at the branch pipe.

[0011] Preferably, the condensate pipe is coiled into a "bow" shape, and multiple layers of condensate pipes are provided inside the component according to the thickness of the component, with adjacent layers of condensate pipes connected in series through pipes.

[0012] Preferably, several sets of telescopic mechanisms are connected between the condensate pipes of adjacent layers, and the telescopic mechanisms are equipped with temperature and humidity sensors.

[0013] Preferably, the telescopic mechanism includes a first screw, a second screw, and a sleeve. The inner surface of the sleeve has internal threads with opposite directions at both ends. The first screw and the second screw are coaxially arranged opposite to each other. The opposite ends of the first screw and the second screw are respectively screwed to the two ends of the inner surface of the sleeve. The outer ends of the first screw and the second screw are respectively fixedly connected to the pipe wall of the upper or lower condensate pipe. When the sleeve is rotated, the first screw and the second screw move simultaneously toward or away from the sleeve.

[0014] Preferably, the outer ends of the first screw and the second screw are respectively screwed to threaded joints pre-installed on the wall of the condensate pipe.

[0015] Preferably, a temperature sensor is provided on the outer surface of the concrete of the component, and the temperature sensor is connected to the controller signal via a wire.

[0016] This novel temperature control system for large-volume concrete construction has the following beneficial effects:

[0017] This new design effectively improves the curing effect of large-volume concrete components, monitors the temperature of the concrete inside and outside the component in real time, and promptly activates the condensate drain pipe to prevent cracking. Furthermore, the condensate drain pipe features an inner cross-linked polyethylene pipe and an outer metal protective pipe, ensuring structural strength and plasticity, guaranteeing construction safety, and providing ease of construction. Attached Figure Description

[0018] Figure 1 A top view of the structure of this new invention during use;

[0019] Figure 2 A schematic diagram showing the connection of condensate pipes between adjacent layers of this novel structure via a telescopic mechanism;

[0020] Figure 3 A bottom view of the structure of this novel condensate pipe;

[0021] Figure 4 A cross-sectional view of this novel condensate pipe;

[0022] 1: Condensate pipe; 2: Large-volume concrete component; 3: Inlet end; 4: Outlet end; 5: Telescopic mechanism; 51: Sleeve; 52: First screw; 53: Second screw; 6: Threaded joint; 7: Temperature and humidity sensor; 8: Connecting pipe; 9: Pressure gauge; 10: Metal protective pipe; 11: First condensate pipe (upper layer); 12: Second condensate pipe (lower layer); 13: Cross-linked polyethylene pipe. Detailed Implementation

[0023] The following is a detailed description of the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this invention.

[0025] In this embodiment, the novel temperature control system for large-volume concrete construction, such as... Figure 1-4As shown, the system includes a controller (not shown), a temperature and humidity sensor 7, a condensate pipe 1, and a pump (not shown). The condensate pipe 1 is used to bind and fix the system to the reinforcing cage inside the component. The condensate pipe 1 includes an inner cross-linked polyethylene pipe 13 and an outer metal protective pipe 10. The inlet end of the condensate pipe 1 is connected to the water outlet end of the pump, and the water inlet end of the pump is connected to the outlet pipe of a condensate tank (not shown). The inlet pipe of the condensate tank is connected to the outlet end of the condensate pipe 1, forming a condensate circuit for cooling the concrete inside the component. The temperature and humidity sensor 7 is connected to the condensate pipe 1 to monitor the temperature and humidity of the concrete inside the component during the curing process. The temperature and humidity sensor 7 and the pump are electrically connected to the controller via wires. The principle is: when the temperature of the concrete inside the component exceeds a set value, the pump is activated to cool the inside of the component through condensate. In this embodiment, the condensate pipe 1 includes a cross-linked polyethylene pipe 13 in the inner layer and a metal protective pipe 10 in the outer layer. On the one hand, the cross-linked polyethylene pipe 13 has good toughness and bendability, and on the other hand, the metal protective pipe 10 can have good heat conduction properties while providing protection.

[0026] In this embodiment, the metal protective tube 10 is made of stainless steel.

[0027] In this embodiment, the metal protective pipe 10 is a metal-shaped gooseneck pipe. Because the component contains a complex steel reinforcement cage, the cross-linked polyethylene pipe can be bent to adapt to the structure of the steel reinforcement cage when fixing the condensate pipe, while the metal protective pipe 10 can fix the bent shape.

[0028] In this embodiment, as Figure 1 , 2 As shown, the inlet 3 of the condensate pipe 1 is connected to a first connecting pipe via a first connector. The first connecting pipe is connected to the water output end of the pump. A branch pipe is provided on the first connecting pipe, and a pressure gauge 9 for detecting water pressure is installed at the branch pipe. In actual use, a constant pressure gauge reading indicates that the condensate pipe is operating normally. If the pressure drops rapidly, it indicates that leakage may have occurred. To ensure the strength of the concrete inside the component and prevent condensate from entering, the condensate circulation should be stopped immediately and the relevant valves closed.

[0029] In this embodiment, as Figure 1 , 2 As shown, the condensate pipe 1 is coiled into a "bow" shape, and multiple layers of condensate pipes are provided inside the component according to the thickness of the component. The condensate pipes of adjacent layers are connected in series through pipes.

[0030] In this embodiment, as Figure 1 , 2As shown, several sets of telescopic mechanisms 5 are connected between the condensate pipes of adjacent layers, and temperature and humidity sensors 7 are installed on the telescopic mechanisms 5.

[0031] In this embodiment, as Figure 1 , 2 As shown, the telescopic mechanism 5 includes a first screw 52, ​​a second screw 53, and a sleeve 51. The inner surface of the sleeve 51 has internal threads with opposite directions at both ends. The first screw 52 and the second screw 53 are coaxially aligned and opposite to each other, with their opposite ends screwed to the two ends of the inner surface of the sleeve 51. The outer ends of the first screw 52 and the second screw 53 are fixedly connected to the wall of the upper or lower condensate pipe 1, respectively. Rotating the sleeve 51 causes the first screw 52 and the second screw 53 to move simultaneously towards or away from the sleeve 51. The telescopic mechanism allows adjustment of the spacing between adjacent condensate pipes to accommodate concrete components of different thicknesses. It also ensures the stability of the condensate pipes' positions, and when the condensate pipes are evenly distributed within the component, it guarantees a uniform cooling effect.

[0032] In this embodiment, as Figure 2 As shown, the outer ends of the first screw 52 and the second screw 53 are respectively screwed to the threaded joint 6 pre-installed on the wall of the condensate pipe 1.

[0033] In this embodiment, a temperature sensor (not shown in the figure) is installed on the outer surface of the concrete component. The temperature sensor is connected to the controller via a wire. By comparing the temperature difference between the surface and internal parts of the component, the temperature difference between the concrete inside and outside the component can be monitored in real time, thereby enabling more precise control of the pump's start and stop.

[0034] The working principle of this new type:

[0035] Before pouring large components, one or more layers of condensate pipes are installed according to the thickness of the component. Adjacent layers of condensate pipes are connected and fixed using an expansion joint. Temperature and humidity sensors are attached to the outer wall of the casing. Then, the condensate pipes are secured to the reinforcing cage with wire. During use, the temperature and humidity sensors are connected to the controller via wires. The pump, condensate tank, inlet, and outlet pipes are connected. Concrete is poured, and when the temperature and humidity sensors detect that the internal concrete temperature exceeds the set value, the pump is activated, using condensate to cool the interior of the component.

Claims

1. A temperature control system for large-volume concrete construction, characterized in that: The system includes a controller, a temperature and humidity sensor, a condensate pipe, and a pump. The condensate pipe is used to bind and fix the system to the reinforcing cage inside the component. The condensate pipe includes a cross-linked polyethylene pipe as an inner layer and a metal protective pipe as an outer layer. The water inlet of the condensate pipe is connected to the water outlet of the pump. The water inlet of the pump is connected to the water outlet of the condensate tank. The water inlet of the condensate tank is connected to the water outlet of the condensate pipe. A temperature and humidity sensor is connected to the condensate pipe. The temperature and humidity sensor and the pump are electrically connected to the controller via wires.

2. The temperature control system for large-volume concrete construction as described in claim 1, characterized in that: The metal protective tube is made of stainless steel.

3. The temperature control system for large-volume concrete construction as described in claim 2, characterized in that: The metal protective tube is a shaped metal gooseneck tube.

4. The temperature control system for large-volume concrete construction as described in claim 3, characterized in that: The inlet end of the condensate pipe is connected to a first connecting pipe via a first connector. The first connecting pipe is connected to the water output end of the pump. A branch pipe is provided on the first connecting pipe, and a pressure gauge for detecting water pressure is installed at the branch pipe.

5. The temperature control system for large-volume concrete construction as described in claim 4, characterized in that: The condensate pipe is coiled into a bow-shaped structure, and multiple layers of condensate pipes are provided inside the component according to the thickness of the component. The condensate pipes of adjacent layers are connected in series through pipes.

6. The temperature control system for large-volume concrete construction as described in claim 5, characterized in that: Several sets of telescopic mechanisms are connected between the condensate pipes of adjacent layers, and temperature and humidity sensors are installed on the telescopic mechanisms.

7. The temperature control system for large-volume concrete construction as described in claim 6, characterized in that: The telescopic mechanism includes a first screw, a second screw, and a sleeve. The inner surface of the sleeve has internal threads with opposite directions at both ends. The first screw and the second screw are coaxially arranged opposite each other. The opposite ends of the first screw and the second screw are respectively screwed to the two ends of the inner surface of the sleeve. The outer ends of the first screw and the second screw are respectively fixedly connected to the pipe wall of the upper or lower condensate pipe. When the sleeve is rotated, the first screw and the second screw move simultaneously toward or away from the sleeve.

8. The temperature control system for large-volume concrete construction as described in claim 7, characterized in that: The outer ends of the first screw and the second screw are respectively screwed to threaded joints pre-installed on the wall of the condensate pipe.

9. A temperature control system for large-volume concrete construction as described in claim 8, characterized in that: A temperature sensor is provided on the outer surface of the concrete of the component, and the temperature sensor is connected to the controller signal via a wire.

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