A large-volume concrete water cooling device

Abstract

This utility model provides a water-cooling device for large-volume concrete, relating to the field of water-cooling technology for large-volume concrete. The device includes a cooling water unit connected to a first port of a four-way reversing ball valve; a second port of the four-way reversing ball valve connected to a first water reservoir, a fourth port connected to a second water reservoir, and a third port serving as a drain outlet; the first water reservoir is connected to one end of a cooling water pipe, and the second water reservoir is connected to the other end of the cooling water pipe; temperature sensors are installed at both ends of the cooling water pipe. Furthermore, when the temperature difference between the two temperature sensors exceeds a preset value, the four-way reversing ball valve reverses its direction. This device, by accurately detecting the actual cooling water temperature and coordinating with the four-way reversing ball valve to adjust the cooling water reversal, helps to achieve uniform cooling of different parts and increases the cooling rate of the concrete.

Description

Technical Field

[0001] This utility model relates to the field of water cooling technology for large-volume concrete, and in particular to a water cooling device for large-volume concrete. Background Technology

[0002] With the accelerating pace of water conservancy project construction, the demand for manpower and resources is also gradually increasing. Water cooling is an essential temperature control measure during the construction of large-volume concrete. In water cooling devices based on four-way reversing ball valves, the inlet and outlet of the valve are fixed. The flow order of water through the other two ports can be changed by adjusting the valve direction, thus achieving reversal. However, the current reversing of four-way reversing ball valves is often performed periodically, making it impossible to flexibly adjust the cooling water flow direction according to the cooling water temperature. This can easily lead to uneven cooling of different parts of the concrete, affecting the cooling rate. Utility Model Content

[0003] To address the aforementioned technical problems in the existing technology, this utility model aims to provide a water cooling device that can adjust the direction of water flow according to water temperature.

[0004] Specifically, this utility model provides a water cooling device for large-volume concrete, comprising:

[0005] Four-way reversing ball valve, cooling water device, first water tank, second water tank and cooling water pipe;

[0006] The cooling water unit is connected to the first port of the four-way reversing ball valve;

[0007] The second port of the four-way reversing ball valve is connected to the first water tank, the fourth port is connected to the second water tank, and the third port is the drain outlet.

[0008] The first water tank is connected to one end of the cooling water pipe via the first temperature sensor, and the second water tank is connected to the other end of the cooling water pipe via the second temperature sensor.

[0009] The four-way reversing ball valve is used to switch the connection state based on the difference in water temperature measured by the first temperature sensor and the second temperature sensor.

[0010] Preferably, it also includes a ball valve and a flow sensor;

[0011] The on / off ball valve is located between the cooling water device and the four-way reversing ball valve to control the water flow rate;

[0012] A flow sensor is installed at the first port of the four-way reversing ball valve to monitor the flow rate of water.

[0013] Compared with the prior art, the technical solution provided by this utility model can accurately detect the actual cooling water temperature by using the first temperature sensor and the second temperature sensor, and adjust the cooling water reversal in conjunction with the four-way reversing ball valve, which helps to achieve uniform cooling of different parts and improve the cooling speed of concrete.

[0014] Furthermore, the installation of a ball valve and a flow sensor helps to achieve precise control of the water flow rate, making the water cooling device suitable for water cooling of concrete in different environments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the water cooling device for large-volume concrete in this utility model.

[0016] Figure 2 This is a front view of the overall structure of the water cooling device for large-volume concrete in this utility model.

[0017] Figure 3 This is a right view of the overall structure of the water cooling device for large-volume concrete in this utility model.

[0018] Figure 4 This is a cross-sectional schematic diagram of the four-way reversing ball valve in this utility model with the first port and the second port in the conducting state.

[0019] Figure 5 This is a cross-sectional schematic diagram of the first to fourth ports of the four-way reversing ball valve in this utility model when they are in the conducting state.

[0020] The labels in the diagram represent: four-way reversing ball valve - 1, reversing knob - 2, flow sensor - 3, temperature sensor - 4, housing - 5, control lever - 6, take-up reel - 7, cable - 8, disc - 9, groove - 10, cooling water device - 11, on / off ball valve - 12, flange connection - 13, first water tank - 14, second water tank - 15, first temperature sensor - 16, second temperature sensor - 17, cooling water pipe - 18, drainage well - 19, control unit - 20, cable - 21, pouring sump surface - 22. Detailed Implementation

[0021] The technical solution provided by this utility model will be further described in detail below with reference to the accompanying drawings.

[0022] A schematic diagram of the overall structure of the large-volume concrete water cooling device provided by this utility model is shown below. Figure 1 As shown, it includes a four-way reversing ball valve 1, a cooling water device 11, a switching ball valve 12, a first water tank 14, a second water tank 15, a first temperature sensor 16, a second temperature sensor 17, a cooling water pipe 18, and a control unit 20.

[0023] The cooling water device 11 is connected to the first port of the four-way reversing ball valve 1 via a pipe and a switch ball valve 12. The second port of the four-way reversing ball valve 1 is connected to the first water reservoir 14 via a pipe; the first water reservoir 14 is connected to the second water reservoir 15 via a cooling water pipe 18; the second water reservoir 15 is connected to the fourth port of the four-way reversing ball valve 1 via a pipe; the third port of the four-way reversing ball valve 1 is used for drainage. The first port of the four-way reversing ball valve 1 is adjacent to the second and fourth ports, respectively. A first temperature sensor 16 is installed between the cooling water pipe 18 and the first water reservoir 14, and a second temperature sensor 17 is installed between the cooling water pipe 18 and the second water reservoir 15. The cooling water device 11, the switch ball valve 12, the first temperature sensor 16, and the second temperature sensor 17 are all connected to the control unit via cables 22.

[0024] The ball valve 12 can cut off the flow of water, and the flow rate can be controlled by adjusting its opening degree. Construction personnel can adjust the water flow rate via the control unit 20 (e.g., a host computer) according to the volume of concrete requiring cooling, or adjust it manually. The overall structure of the four-way reversing ball valve 1 is shown in the main view below. Figure 2 As shown, the right view of the overall structure is as follows: Figure 3 As shown; the first connected state of the four-way reversing ball valve 1, that is, the first port to the second port are connected as follows. Figure 4 As shown, the second connected state of the four-way reversing ball valve 1, that is, the conducting state of the first port to the third port, is as follows: Figure 5 As shown.

[0025] Once the water cooling system is installed and begins to function as a water cooler, its operation process is as follows:

[0026] like Figure 1As shown, after the water source inputs water into the cooling water device 11 and it is sufficiently cooled, the switch ball valve 12 opens, and the appropriate flow rate is selected according to the volume of the concrete pouring surface 22 (the concrete to be cooled) and the ambient temperature. The relationship between the volume of the concrete to be cooled, the ambient temperature, and the flow rate is set by the construction personnel based on experience. Of course, when the water source is insufficient, a pressure pump can be added between the switch ball valve 12 and the four-way reversing ball valve 1 to adjust the water flow rate. The cooled water flows through the first port into the four-way reversing ball valve 1. At this time, the four-way reversing ball valve 1 is in the first-port-second-port conducting state, so the water flows out from the second port and flows into the first water tank 14 through the pipe. The first water tank 14 stores a certain amount of cooling water to ensure sufficient water flow in the cooling water pipe 18. Subsequently, the water flows through the flow sensor 4 installed at the inlet into the cooling water pipe 18, then through the second temperature sensor 17 installed at the outlet into the second water tank 15, and finally flows into the drainage well 19 through the third-port-fourth-port passage of the four-way reversing ball valve 1. Two temperature sensors installed at the inlet and outlet of the cooling water pipe 18 can monitor the flow rate of the cooling water and the water temperature change before and after cooling the pouring surface 22 in real time and accurately, so as to understand the cooling effect and determine the time to stop water supply or adjust the water supply volume.

[0027] During water cooling, due to water temperature changes, the cooling rate is fastest near the inlet and slowest near the outlet of the casting surface 22. As the water cooling time increases, the temperature difference between different parts of the casting surface 22 increases. To ensure uniform cooling of the casting surface 22 and prevent internal stress from causing tearing or damage due to temperature differences, the reversing knob 2 can be rotated, which in turn drives the reversing valve 6 via the control lever 6, changing the state of the four-way reversing ball valve 1 from a first-port-second-port open state to a first-port-third-port open state. This changes the water inlet direction, with the original outlet water tank becoming the new inlet water tank, and vice versa. The cooling water flows through the second water tank 15 and the original outlet into the cooling water pipe 18, exits from the original inlet, and finally exits through the first water tank 14 from the second-port-third-port passage of the four-way reversing ball valve 1.

[0028] Optionally, when the water temperature change detected by the second flow sensor 17 at the outlet of the cooling water pipe 18 slows down significantly, it indicates that the cooling effect of the cooling water on the concrete is reduced in the current flow direction. At this time, the concrete temperature near the outlet is higher than that near the inlet, but the water temperature at the outlet is higher than that at the inlet, resulting in low cooling efficiency. If water continues to be supplied in the original direction, the concrete will gradually achieve complete cooling of different parts along the cooling water pipe 18, which will consume too much time and reduce construction efficiency. At this time, if the four-way reversing ball valve 1 is controlled to reverse, allowing the cooling water to flow into the cooling water pipe 18 from the original outlet, the cooling efficiency of the concrete near the original outlet will be improved. At the same time, the temperature difference between different parts of the concrete can be reduced, which helps to improve the uniformity of water cooling.

[0029] Simply put, when the real-time temperature difference detected by the two flow sensors at the inlet and outlet of cooling water pipe 18 (the outlet water temperature is higher than the inlet water temperature) exceeds a preset value, it indicates that the cooling water has already carried away a large amount of heat from the concrete. This can also control the four-way reversing ball valve 1 to redirect the cooling water flow from the original outlet into cooling water pipe 18, thereby improving the cooling efficiency of the concrete near the original outlet and the uniformity of overall concrete cooling. It should be noted that, optionally, the preset temperature difference value can be adjusted after each cooling water reversal, generally by decreasing it.

[0030] As the reversing knob 2 is rotated, the temperature difference between the water detected by the two flow sensors becomes smaller and smaller until it reaches 0, which means that the surface 22 of the pouring chamber has been completely cooled and the water cooling process has ended.

[0031] Optionally, a flow detector 3 is installed at the first port of the four-way reversing ball valve 1, and temperature sensors 4 are installed at both the second and fourth ports. The flow detector 3 and the two temperature sensors 4 are connected in parallel to the control unit 20. Concentrating the flow detector 3 and temperature sensors 4 in the four-way reversing ball valve 1 reduces the installation steps of the water cooling device and saves manpower. The parallel wiring design is similar and helps avoid excessive cable tangling, which could affect the normal operation of the water cooling device or the efficiency of disassembly and transportation. The flow detector 3 at the first port can monitor the amount of water used for cooling in real time. Combined with the switching ball valve 12, it enables quantitative control of the amount of water used for cooling. The temperature sensors 4 at the second and fourth ports can monitor the water temperature flowing through the two ports in real time. Combined with the water temperature detected by the flow sensor 4 at the outlet of the cooling water pipe 18, it can determine the degree of temperature transfer between the quantified outflow and inflow water.

[0032] Optionally, the four-way reversing ball valve 1 is also equipped with a take-up reel 7. The reversing knob 2 is located at the upper end of the operating lever 6; the lower end of the operating lever 6 passes through the center of the take-up reel 7 and connects to the reversing valve of the four-way reversing ball valve 1; a baffle is provided along the outer edge of the take-up reel 7; at the same height as the upper edge of the baffle, a disc 9 is provided around the operating lever 6; the radius of the disc 9 is smaller than that of the take-up reel 7. The take-up reel 7 can be fixed to the operating lever 6, or it can be locked to the operating lever 6 by a groove 10. Clearly, the take-up reel 7 can be used to wind up all the cables of the water-cooled device, preventing messy cables from affecting the storage and transportation of the cooling device.

[0033] Optionally, the cables include power cables and signal cables, employing a layered shielding design. The outer layer uses a metal braided mesh and aluminum foil to completely wrap the internal multiple cables, shielding them from external interference. Simultaneously, each power cable and signal cable has an independent electromagnetic interference (EMI) protection layer to block electromagnetic interference between the cables. The protective housing 5 is a removable metal protective housing used for waterproofing, preventing cable damage, and facilitating sensor maintenance. The pressure sensor is a high-precision pressure sensor, and the temperature sensor is a digital temperature sensor.

[0034] In summary, the first and second temperature sensors, by accurately detecting the actual cooling water temperature and coordinating with the four-way reversing ball valve to adjust the cooling water flow, help achieve uniform cooling of different parts and increase the cooling rate of concrete. Furthermore, the inclusion of a switching ball valve and a flow sensor facilitates precise control of the water flow rate, making the water cooling device suitable for concrete water cooling in various environments.

[0035] In addition, temperature sensors are installed at the second and fourth ports of the four-way reversing ball valve to monitor the impact of heat generated by the return water on the inlet water in real time. Integrating the temperature sensor and flow sensor into the four-way reversing ball valve can reduce the number of wiring and installation steps, which helps to save manpower.

Claims

1. A mass concrete water cooling device, characterized by, include: Four-way reversing ball valve (1), cooling water device (11), first water tank (14), second water tank (15) and cooling water pipe (18); The cooling water device (11) is connected to the first port of the four-way reversing ball valve (1); The second port of the four-way reversing ball valve (1) is connected to the first water tank (14), the fourth port is connected to the second water tank (15), and the third port is the drain outlet; The first water tank (14) is connected to one end of the cooling water pipe (18) via the first temperature sensor (16), and the second water tank (15) is connected to the other end of the cooling water pipe (18) via the second temperature sensor (17). The four-way reversing ball valve (1) is used to switch the connection state according to the difference in water temperature measured by the first temperature sensor (16) and the second temperature sensor (17).

2. A mass concrete water cooling device according to claim 1, wherein It also includes a ball valve (12) and a flow sensor (3); A switch ball valve (12) is installed between the cooling water device (11) and the four-way reversing ball valve (1) to control the flow rate of water. A flow sensor (3) is installed at the first port of the four-way reversing ball valve (1) to monitor the flow rate of water.

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