An internal concrete eddy current cooling system

Abstract

The application discloses a concrete internal vortex cooling system which is arranged in the concrete in a pre-buried mode and comprises a cooling pipe, the two ends of the cooling pipe are a first end and a second end respectively, and the first end and the second end both extend to the outside of the concrete; the first end is provided with an air inlet for filling compressed air into the inside of the cooling pipe; the vortex conveying pipe arranged in the inside of the cooling pipe is further provided with a first air hole for the compressed air to enter so that the compressed air forms a vortex to realize cooling, and the vortex conveying pipe is further provided with a second air hole for conveying air with a lower temperature to the inner wall of the cooling pipe to realize heat exchange with the cooling pipe and then to cool the concrete; the compressed air is cooled by the mode of injecting the compressed air and passing through the small hole, and the vortex cooling system has the characteristics of simple structure, low cost and no waste of resources, and is convenient to popularize.

Description

Technical Field

[0001] This disclosure relates to the field of building construction technology, specifically to a concrete internal vortex cooling system. Background Technology

[0002] Concrete is one of the most commonly used building materials in my country's infrastructure construction, widely applied in tunnels, bridges, water conservancy, hydropower, and municipal engineering. In actual projects, due to structural scale and construction conditions, large-volume concrete is often required for monolithic casting. The cement hydration reaction releases a large amount of heat in a short time, causing the internal temperature of the concrete to rise rapidly. Due to its poor thermal conductivity, a significant temperature difference between the inside and outside of the concrete is easily formed. Under boundary constraints, concrete cannot expand and contract freely. Once the temperature stress exceeds the tensile strength at its age, temperature cracks are prone to occur, seriously affecting the durability and safety of the structure, and even causing huge economic losses. Therefore, in the construction of large-volume concrete, it is essential to control the uniformity of internal temperature and the development of temperature differences to reduce temperature stress and prevent cracks.

[0003] Currently, internal cooling of large-volume concrete mainly relies on two technical methods: one is to pre-embed cooling water pipes for water circulation cooling, but the water cooling system requires a supporting water storage tank and refrigeration equipment, resulting in high construction costs and resource consumption; the other is to incorporate phase change materials to achieve temperature regulation through heat absorption and release. Although this method is adaptive, the material cost is high, the construction is complex, and it is difficult to promote. In summary, although existing large-volume concrete cooling technologies are feasible to a certain extent, they still face key problems such as unstable cooling efficiency, strong system dependence, high cost, and heavy environmental burden. There is an urgent need to develop a new type of internal temperature control system that is simple in structure, provides uniform cooling, is highly reliable, and does not rely on complex external equipment to meet the urgent need for crack control in large-scale concrete projects. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a concrete internal vortex cooling system.

[0005] In a first aspect, this application provides a concrete internal eddy current cooling system, wherein the eddy current cooling system is embedded in the concrete, and the eddy current cooling system includes:

[0006] The cooling pipe has a first end and a second end at two ends, both of which extend to the outside of the concrete. The first end is provided with an air inlet for filling the cooling pipe with compressed air.

[0007] A vortex conveying pipe is disposed inside the cooling pipe. The end of the vortex conveying pipe near the first end is provided with a first vent hole communicating with its interior, for allowing the compressed air to enter the vortex conveying pipe so that the compressed air forms a vortex and achieves cooling.

[0008] The eddy current conveying pipe is also provided with several second vent holes for diffusing the compressed air to the inner wall of the cooling pipe to reduce the temperature of the concrete.

[0009] According to the technical solution provided in the embodiments of this application, both the first end and the second end are provided with a first baffle to close the cooling tube. The cooling tube is also provided with a second baffle to divide the interior of the cooling tube into an air intake space and a cooling space. The air intake port and the air intake space are connected.

[0010] According to the technical solution provided in the embodiments of this application, the vortex conveying pipe includes a vortex tube, and the vortex tube is arranged corresponding to the air intake space;

[0011] The vortex tube has a third end and a fourth end at its two ends, both of which are open.

[0012] The third end extends through the first baffle near the first end to the outside of the cooling tube, and the fourth end is connected to the second baffle.

[0013] According to the technical solution provided in the embodiments of this application, the vortex tube is located in the air intake space, and its circumferential outer wall is provided with a plurality of first ventilation holes with the interior. The axial direction of the first ventilation holes and the radial direction of the vortex tube form a preset angle, which is used to allow the compressed air to enter the interior of the vortex tube through the first ventilation holes and form a vortex.

[0014] According to the technical solution provided in the embodiments of this application, a sealing member is provided in the opening of the third end. The sealing member is a conical structure with its small end facing the inside of the vortex tube and its large end having a diameter smaller than the inner diameter of the vortex tube. The large end of the sealing member is provided with a connector for connecting to the inner wall of the third end.

[0015] A gap is formed between the large end of the sealing component and the inner wall of the third end for the discharge of hot air.

[0016] According to the technical solution provided in the embodiments of this application, the eddy current conveying pipe further includes a conveying pipe, which is disposed in the cooling space. Both ends of the conveying pipe are open, and the second baffle and the first baffle near the second end are both provided with through holes. Both ends of the conveying pipe are respectively connected to the two through holes, and the through holes of the second baffle are connected to the eddy current pipe.

[0017] According to the technical solution provided in the embodiments of this application, the diameter of the conveying pipe is smaller than the diameter of the vortex tube.

[0018] According to the technical solution provided in the embodiments of this application, a plurality of second vent holes are disposed on the side wall of the delivery pipe.

[0019] According to the technical solution provided in the embodiments of this application, the cooling tube is made of a material with high thermal conductivity, and the eddy current conveying tube is made of a material with low thermal conductivity.

[0020] In summary, this technical solution specifically discloses a concrete internal eddy current cooling system. The eddy current cooling system is embedded inside the concrete and includes a cooling pipe with a first end and a second end, both extending to the outside of the concrete. The first end is provided with an air inlet for filling the cooling pipe with compressed air. It also includes an eddy current conveying pipe, which is located inside the cooling pipe and has a first vent hole communicating with its interior to allow compressed air to enter, thereby forming a eddy current and achieving cooling. The eddy current conveying pipe is also provided with a second vent hole for conveying cooler air to the inner wall of the cooling pipe, achieving heat exchange with the cooling pipe and thus cooling the concrete.

[0021] By injecting compressed air and allowing it to pass through a small aperture, the compressed air can be cooled. Compared with existing water cooling methods and methods that incorporate phase change materials, the eddy current cooling system of this application has the characteristics of simple structure, low cost, no waste of resources, and is easy to promote. Attached Figure Description

[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of an eddy current cooling system.

[0024] Figure 2 This is a cross-sectional view of the eddy current cooling system.

[0025] Figure 3 The diagram shows the eddy current cooling system inside the concrete.

[0026] The following are the labels in the diagram: 1. Concrete; 2. Cooling pipe; 3. Air inlet; 4. First vent; 5. Second vent; 6. First baffle; 7. Second baffle; 8. Vortex tube; 9. Sealing component; 10. Connecting component; 11. Conveying pipe. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] This application provides a concrete internal eddy current cooling system, wherein the eddy current cooling system is embedded in the concrete 1 in a pre-embedded form. Optionally, before the concrete 1 is poured, the eddy current cooling system is tied together with the reinforcing steel bars and then the concrete 1 is poured.

[0031] Furthermore, such as Figure 3 As shown, the eddy current cooling system is prefabricated according to the dimensions of concrete 1 and its internal steel reinforcement structure;

[0032] Furthermore, when the volume of concrete 1 is large, multiple eddy current cooling systems can be used. These multiple eddy current cooling systems can be distributed in an array on concrete 1. The eddy current cooling systems in different layers are staggered, and it must be ensured that the distance between any adjacent eddy current cooling systems is no more than 30cm, otherwise it may affect the uniform cooling effect.

[0033] like Figure 1 and Figure 2 As shown, a concrete internal eddy current cooling system includes:

[0034] Cooling pipe 2 has a first end and a second end at its two ends, both of which extend to the outside of concrete 1; the first end is provided with an air inlet 3 for filling the cooling pipe 2 with compressed air.

[0035] The vortex conveying pipe is installed inside the cooling pipe 2. The end of the vortex conveying pipe near the first end is provided with a first vent 4 that communicates with its interior, so that compressed air enters the vortex conveying pipe to form a vortex and achieve cooling.

[0036] The eddy current conveying pipe is also provided with several second vent holes 5, which are used to diffuse compressed air to the inner wall of the cooling pipe 2 to reduce the temperature of the concrete 1.

[0037] Optionally, the cooling tube 2 and the eddy current delivery tube can be coaxially arranged;

[0038] Thus, compressed air is injected into the cooling pipe 2 through the air inlet 3. After passing through the vortex conveying pipe, the compressed air can form a vortex, which flows in the vortex conveying pipe in a rotating manner, and diffuses into the inner wall of the cooling pipe 2 through the second vent 5.

[0039] When gas rapidly expands from a high-pressure region to a low-pressure region through a small orifice:

[0040] The volume suddenly increases, but the process is extremely rapid, and the gas does not have time to exchange heat with the outside environment (approximately an adiabatic process). Gas molecules need to do work to overcome intermolecular forces, resulting in a decrease in internal energy, which manifests as a decrease in temperature.

[0041] Based on the above principle, the temperature of the compressed air decreases after passing through the air inlet 3, and then decreases again after passing through the first vent 4. At this time, the temperature of the compressed air is lower than that of the room temperature air in the vortex conveying pipe.

[0042] Furthermore, the compressed air rotates in a vortex within the vortex conveying pipe. The rotating airflow rubs against the pipe wall, resulting in a higher temperature at the periphery of the vortex and a lower temperature at the center of the vortex.

[0043] The cooler air diffuses through the second vent 5 into the inner wall of the cooling pipe 2, and exchanges heat with the inner wall of the cooling pipe 2, thereby cooling the cooling pipe 2 and then conducting it to the concrete 1 to cool the concrete 1.

[0044] Both the first and second ends are provided with a first baffle 6 to seal the cooling pipe 2. The cooling pipe 2 is also provided with a second baffle 7 to divide the interior of the cooling pipe 2 into an air intake space and a cooling space. The air inlet 3 is connected to the air intake space.

[0045] By setting the first baffle 6 and the second baffle 7, the cooling pipe 2 is sealed, preventing the low-temperature air from flowing to the outside and causing waste.

[0046] The vortex delivery pipe includes a vortex tube 8, which is set in the air intake space.

[0047] The two ends of the vortex tube 8 are the third end and the fourth end, and both the third end and the fourth end are open.

[0048] The third end extends through the first baffle 6 near the first end to the outside of the cooling tube 2, and the fourth end is connected to the second baffle 7, so the opening of the fourth end is blocked by the second baffle 7.

[0049] Furthermore, the portion of the vortex tube 8 located in the air intake space has several first ventilation holes 4 on its circumferential outer wall. The first ventilation holes 4 form a preset angle with the radial direction of the vortex tube 8, which is used to allow compressed air to enter the interior of the vortex tube 8 through the first ventilation holes 4 and form a vortex.

[0050] Furthermore, a sealing element 9 is provided in the opening at the third end. The sealing element 9 has a conical structure, with its small end facing the inside of the vortex tube 8 and its large end having a diameter smaller than the inner diameter of the vortex tube 8. A connector 10 is provided at the large end of the sealing element 9 for connecting to the inner wall of the third end.

[0051] A gap is formed between the inner walls of the nine large ends and the third end of the sealing component to allow hot air to escape.

[0052] Compressed air enters the intake space through the intake port 3, and then enters the vortex tube 8 through the first vent hole 4. A preset angle is formed between the axis of the first vent hole 4 and the radial direction of the vortex tube 8, so that the compressed air can form a vortex after entering the vortex tube 8 through the first vent hole 4. Since the air temperature is higher at the periphery of the vortex and lower at the center of the vortex, and since a gap is formed between the large end and the inner wall of the third end of the sealing member 9, the higher temperature air can be discharged outward from the gap, while the lower temperature air can remain inside the vortex tube 8.

[0053] The eddy current conveying tube also includes a conveying tube 11, which is disposed in the cooling space. Both ends of the conveying tube 11 are open. The second baffle 7 and the first baffle 6 near the second end are both provided with through holes. Both ends of the conveying tube 11 are connected to the two through holes respectively, and the through hole of the second baffle 7 is connected to the fourth end of the eddy current tube 8. The eddy current tube 8 and the conveying tube 11 can be coaxially arranged.

[0054] Therefore, because the air with a higher temperature is discharged through the gap, the air with a lower temperature cannot pass through the gap, but can enter the inside of the conveying pipe 11 through the through hole of the second baffle 7.

[0055] Furthermore, the diameter of the conveying pipe 11 is smaller than the diameter of the vortex tube 8;

[0056] Therefore, after the air enters the delivery pipe 11 through the through hole of the second baffle 7, the temperature drops again.

[0057] Several second vent holes 5 are provided on the side wall of the conveying pipe 11;

[0058] Therefore, the low-temperature air can diffuse into the cooling space through the second vent 5 and come into contact with the inner wall of the cooling pipe 2, thereby exchanging heat with the cooling pipe 2, reducing the temperature of the cooling pipe 2, and thus reducing the temperature of the concrete 1, achieving the cooling of the concrete 1.

[0059] Optionally, the second baffle 7 can be an annular structure, with its inner diameter matching the outer diameter of the fourth end of the vortex tube 8, and a third baffle is provided at the fourth end to block the fourth end. The third baffle has a through hole, which is connected to one end of the conveying pipe 11, so that the airflow can be cooled by passing through the small hole during the process of the airflow being transported from the vortex tube 8 to the conveying pipe 11.

[0060] To ensure improved cooling efficiency for concrete 1 and sufficient strength of cooling pipe 2 to prevent it from being squeezed by concrete 1, cooling pipe 2 is made of a material with high thermal conductivity, such as aluminum alloy composite material. At the same time, to prevent excessively high temperature at the third end gap from being transferred to the concrete in that area, and to ensure that the cooler air in the transmission path does not rapidly heat up due to internal temperature changes, causing the temperature of the part of the conveying pipe 11 far from the third end to rise and affect the uniform cooling effect inside concrete 1, eddy current conveying pipe is made of a material with low thermal conductivity, such as PVC.

[0061] It should be noted that the air inlet 3 and the through hole near the second end are at least 20cm away from the surface of the concrete 1 to prevent blockage of the airflow passage during pouring.

[0062] After the concrete has set, grouting and sealing can be performed.

[0063] Before grouting and sealing the hole, cut off the air inlet 3, the second end, and the exposed part of the delivery pipe 11, and remove the sealing part 9. Grout is injected into the eddy current cooling system from the third end to ensure that the inside of the eddy current cooling system is completely filled with grout until the grout can no longer be injected and flows out from the end of the delivery pipe 11 away from the first end. At this time, it can be considered that all the pipes of the eddy current cooling system are filled densely. After the grout hardens and forms, the excess part of the pipe at the third end is cut off.

[0064] Working principle: Before pouring concrete 1, the vortex cooling system is prefabricated according to actual needs. The vortex cooling system is tied to the steel bars, and then concrete 1 is poured. This ensures that the first end, air inlet 3, second end, and third end are all exposed on the concrete 1, without affecting the injection of compressed air.

[0065] After the concrete is poured, compressed air is injected into the air intake space through the air inlet 3. The compressed air enters the vortex tube 8 through the first vent 4, where the temperature decreases and a vortex is formed. The air temperature is higher at the periphery of the vortex and lower at the center. The higher-temperature air is discharged outward through the gap between the inner wall of the large end and the third end of the sealing component 9, while the lower-temperature air enters the delivery pipe 11 through the through hole of the second baffle 7, where the temperature decreases again. Subsequently, it diffuses into the cooling space through several second vents 5, contacts the inner wall of the cooling pipe 2 to achieve heat exchange, and thus can uniformly and fully cool the inside of the concrete 1.

[0066] After the concrete has set, grouting and sealing can be carried out.

[0067] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A concrete internal eddy current cooling system, characterized in that, The eddy current cooling system is embedded inside the concrete (1) in a pre-embedded form. The eddy current cooling system includes: Cooling pipe (2), the two ends of the cooling pipe (2) are a first end and a second end, both of which extend to the outside of the concrete (1); the first end is provided with an air inlet (3) for filling the cooling pipe (2) with compressed air; A vortex conveying pipe is provided inside the cooling pipe (2). The end of the vortex conveying pipe near the first end is provided with a first vent hole (4) communicating with its interior, which is used to allow the compressed air to enter the vortex conveying pipe so that the compressed air forms a vortex and achieves cooling. The eddy current conveying pipe is also provided with several second vent holes (5) for diffusing the compressed air to the inner wall of the cooling pipe (2) to reduce the temperature of the concrete (1).

2. The eddy current cooling system according to claim 1, characterized in that, Both the first end and the second end are provided with a first baffle (6) to close the cooling pipe (2). The cooling pipe (2) is also provided with a second baffle (7) to divide the interior of the cooling pipe (2) into an air intake space and a cooling space. The air inlet (3) is connected to the air intake space.

3. The eddy current cooling system according to claim 2, characterized in that, The vortex delivery pipe includes a vortex tube (8), which is arranged corresponding to the air intake space; The two ends of the vortex tube (8) are the third end and the fourth end, respectively, and both the third end and the fourth end are open. The third end extends through the first baffle (6) near the first end to the outside of the cooling pipe (2), and the fourth end is connected to the second baffle (7).

4. The eddy current cooling system according to claim 3, characterized in that, The vortex tube (8) is located in the air intake space. Its circumferential outer wall is provided with a plurality of first ventilation holes (4) inside it. The axial direction of the first ventilation holes (4) and the radial direction of the vortex tube (8) form a preset angle, which is used to allow the compressed air to enter the interior of the vortex tube (8) through the first ventilation holes (4) and form a vortex.

5. The eddy current cooling system according to claim 4, characterized in that, A sealing element (9) is provided in the opening of the third end. The sealing element (9) is a cone structure with its small end facing the inside of the vortex tube (8) and its large end having a diameter smaller than the inner diameter of the vortex tube (8). A connector (10) is provided at the large end of the sealing element (9) for connecting to the inner wall of the third end. A gap is formed between the large end of the sealing element (9) and the inner wall of the third end for discharging hot air.

6. The eddy current cooling system according to claim 3, characterized in that, The vortex conveying pipe also includes a conveying pipe (11), which is disposed in the cooling space. Both ends of the conveying pipe (11) are open. The second baffle (7) and the first baffle (6) near the second end are both provided with through holes. Both ends of the conveying pipe (11) are connected to the two through holes respectively, and the through hole of the second baffle (7) is connected to the vortex pipe (8).

7. The eddy current cooling system according to claim 6, characterized in that, The diameter of the delivery pipe (11) is smaller than the diameter of the vortex pipe (8).

8. The eddy current cooling system according to claim 6, characterized in that, Several second vent holes (5) are provided on the side wall of the delivery pipe (11).

9. The eddy current cooling system according to claim 1, characterized in that, The cooling tube (2) is made of a material with high thermal conductivity, and the eddy current conveying tube is made of a material with low thermal conductivity.

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