An open cooling tower water replenishing system

Abstract

The utility model provides a kind of open cooling tower water replenishing system, belong to data center cooling technical field.The utility model is constituted by data center unit and cooling unit, circulation cooling circuit is formed by frequency conversion water pump, cooling coil and cooling tower, and water quality monitoring and purification device are arranged in cooling unit, and temperature sensing device and heating device, can start heating when water temperature is too low, while water replenishing pipe adopts welding connection and parallelly extends into cooling tower tray, water replenishing opening is placed below liquid level, collocates external insulating layer and self-limiting temperature electric heat tracing band, inside and outside combination prevents freezing, the drain valve of side bottom can empty water storage when shutdown, through the collaborative design between each structure, the effect of efficient cooling, stable operation and reliable anti-freezing is realized.

Description

Technical Field

[0001] This utility model relates to the field of data center cooling technology, specifically to an open cooling tower water replenishment system. Background Technology

[0002] With the rapid development of the digital economy, data centers, as the core infrastructure for information storage and processing, directly impact the service continuity of key sectors such as finance, telecommunications, and cloud computing. Open cooling tower makeup water systems, as a crucial component of the data center cooling cycle, play a vital role in maintaining the cooling medium level and ensuring heat dissipation efficiency. Statistics show that in low-temperature winter environments, data center downtime due to freezing damage to the makeup water system accounts for as much as 35%, with average economic losses exceeding one million yuan per failure. Furthermore, it can lead to serious consequences such as data loss and service interruptions.

[0003] Currently, the industry commonly uses heating belt devices as an antifreeze solution for open cooling tower makeup water systems. This device converts electrical energy into heat energy to locally heat components such as pipes and valves through self-regulating or constant-power electric heating principles. However, in practice, heating belts are often installed on straight pipe sections using a spiral winding method. For irregularly shaped structures such as tees, elbows, and flanges, due to curvature changes and space constraints, achieving a tight fit and continuous coverage is difficult. Furthermore, for precision components such as valve cores and sensor probes, the limited installation and operating space prevents effective wrapping, creating numerous antifreeze blind spots. In addition, in densely packed computer room environments with multiple layers of pipes, problems such as messy wiring, heat accumulation, or uneven attenuation arise, leading to energy waste in some areas and insufficient temperature in others. According to on-site monitoring data, in makeup water systems using traditional heating belts, 20%-30% of critical components still fail to reach the critical antifreeze temperature.

[0004] CN117146611A discloses an anti-freeze system for a cooling tower, comprising a water replenishment control box externally connected to the cooling tower inlet pipe between the cooling tower and the first inlet valve, and a water replenishment and storage device externally connected to the cooling tower outlet pipe between the cooling tower and the outlet valve. The first inlet valve and the outlet valve are respectively located at the inlet of the cooling tower inlet pipe and the outlet of the cooling tower outlet pipe. In anti-freeze mode, the water replenishment control box controls the water in the cooling tower inlet pipe, the cooling tower coils, and the cooling tower outlet pipe to be discharged to the water replenishment and storage device, which stores the discharged water. This solution, by setting up a pipe control device and a water storage device, controls the water in the pipe to be discharged to the water storage device when the pipe is in a low-temperature, non-flowing state. However, this technical solution requires manual judgment on whether water in the standby cooling tower needs to be discharged, making the operation relatively complex.

[0005] In summary, freeze protection for open cooling tower makeup systems in low-temperature environments is crucial for data centers. Existing heating belt devices suffer from numerous freeze protection blind spots due to installation limitations, failing to effectively heat critical components and posing energy waste and safety hazards. Furthermore, the incomplete coverage, high energy consumption, low safety, and complex operation of cooling tower freeze protection devices remain pressing issues that need to be addressed. Utility Model Content

[0006] To address the above problems, this utility model provides an open cooling tower water replenishment system. An insulation structure is installed in the cooling unit to keep the water replenishment device at the same temperature as the cooling water. The water replenishment pipe and water inlet in the water replenishment device are placed below the liquid surface of the cooling tower to prevent the water replenishment device from freezing during water replenishment due to the low external temperature environment.

[0007] This utility model provides an open cooling tower water supply system, which includes a data center unit and a cooling unit;

[0008] The data center unit is equipped with cooling coils;

[0009] The cooling unit includes a cooling tower;

[0010] The cooling tower has a water distributor at the top and a cooling tower tray at the bottom.

[0011] A temperature sensor and a heating device are installed below the cooling tower tray;

[0012] The cooling tower is equipped with a cooling water supply pipe at the bottom of its side. The cooling water supply pipe is located inside the cooling tower tray and is equipped with a water inlet. The cooling water supply pipe is connected to the water inlet located below the liquid level inside the cooling tower tray.

[0013] A water supply valve is installed between the cooling water supply pipe and the water supply port;

[0014] The cooling tower is also equipped with a float that floats on the liquid surface inside the cooling tower and is connected to the water supply valve via a connecting rod to control the opening and closing of the water supply valve.

[0015] Furthermore, the cooling coil is provided with a water inlet and a water outlet.

[0016] Furthermore, the cooling tower is provided with a water inlet and a water outlet.

[0017] Furthermore, the cooling water in the water distributor enters the cooling tower tray, passes through the outlet of the cooling tower and enters the inlet of the cooling coil to cool the data center equipment. After cooling, the water returns from the outlet of the cooling coil to the inlet of the cooling tower and then enters the water distributor to complete the cycle.

[0018] Furthermore, a water pump is installed at the outlet of the cooling tower to provide power for the circulation of cooling water; the water pump is a variable frequency water pump.

[0019] Furthermore, the outlet of the cooling tower is equipped with a water quality monitoring device and a water quality purification device to monitor and purify the cooling water in the cooling tower.

[0020] Furthermore, the temperature sensing device is used to monitor the temperature of the cooling water in the cooling tower tray. When the temperature sensing device detects that the temperature of the cooling water is <5°C, the heating device is activated to heat the cooling water in the cooling tower tray.

[0021] Furthermore, the cooling water supply pipe extends into the cooling tower and is connected to the cooling tower contact surface by welding.

[0022] Furthermore, the cooling water supply pipe is arranged parallel to the bottom surface of the cooling tower and perpendicular to the side surface of the cooling tower.

[0023] Furthermore, the cooling water supply pipe is located outside the cooling tower and is covered with an insulation structure.

[0024] Furthermore, the insulation structure is fixed to the outside of the cooling water supply pipe by a snap fastener.

[0025] Furthermore, the buckle spacing is 3-5 meters per buckle to prevent the insulation structure from falling off.

[0026] Furthermore, the thickness of the insulation structure is 30-50mm.

[0027] Furthermore, a self-regulating electric heating tape is spirally wound between the insulation structure and the cooling water supply pipe for heating the cooling water supply pipe.

[0028] Furthermore, the cooling tower is covered with an insulation layer, which is fixed to the outside of the cooling tower by adhesive bonding.

[0029] Furthermore, a drain valve is installed at the bottom side of the cooling tower.

[0030] Furthermore, when the data center unit stops cooling, the drain valve is opened to drain the water in the cooling tower and prevent it from freezing and cracking.

[0031] The beneficial effects of this utility model are:

[0032] This utility model of a split-type cooling tower water supply system achieves multiple advantages such as high-efficiency cooling, stable operation, and reliable antifreeze thanks to its ingenious structural design. In the system, the connection design between the variable frequency water pump, cooling coil, and cooling tower can flexibly adjust the cooling water circulation power according to the actual heat load of the data center. When the heat load is low, the flow rate is reduced, and when it is high, the flow rate is increased, which not only ensures the cooling effect but also avoids energy waste, achieving precise and efficient cooling. The water quality monitoring device and water quality purification device are set up close to the cooling tower outlet, forming a real-time monitoring-instant purification linkage mechanism to ensure that the water entering the cooling circulation is of good quality, prevent scale buildup and blockage of the cooling coil, and extend the service life of the equipment.

[0033] In terms of anti-freeze design, the temperature sensing and heating devices below the cooling tower tray form an intelligent temperature control defense line. When the water temperature is too low, the heating is activated in time to maintain the normal temperature of the cooling water. The cooling water supply pipe is welded and extends parallel to the bottom of the water tank, ensuring connection strength and water flow stability. The design of the supply port being located below the liquid surface allows the hot water in the water tank to preheat the supply pipe. The insulation structure wraps the supply pipe and cooling tower, and together with the self-regulating electric heating tape, it prevents the pipe from freezing from both external insulation and internal heating. The drain valve is located at the bottom side of the water tank, which can quickly drain the stored water when the system stops cooling, avoiding damage to the equipment due to low temperature freezing and expansion. The float ball and the supply valve are connected by a linkage to form an intuitive and reliable water level control structure, ensuring the stability of the water level in the water tank, ensuring a smooth water supply process, and further improving the reliability and stability of the system operation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the open cooling tower water supply system described in this utility model;

[0035] The labels in the diagram are as follows: A. Data center unit; B. Cooling unit; 1. Cooling coil; 2. Cooling tower; 3. Water pump; 4. Water quality monitoring device; 5. Water purification device; 6. Temperature sensing device; 7. Heating device; 21. Cooling tower tray; 22. Cooling water supply pipe; 23. Water inlet; 24. Water supply valve; 25. Float; 26. Drain valve. Detailed Implementation

[0036] The utility model will be described in detail below with reference to the embodiments:

[0037] This invention provides an open cooling tower water replenishment system, which greatly improves the cooling unit's resistance to freezing at low temperatures by changing the structure and positional relationship in the cooling unit, as well as the insulation structure.

[0038] Example 1

[0039] This embodiment provides an open cooling tower water supply system, which includes a data center unit A and a cooling unit B;

[0040] The data center unit A is equipped with a cooling coil 1;

[0041] The cooling unit B includes a cooling tower 2;

[0042] The upper part of the cooling tower 2 is a water distributor (not shown in the figure, but not limited to the existing ones), and the lower part is a cooling tower tray 21;

[0043] A temperature sensing device 6 and a heating device 7 are installed below the cooling tower tray 21;

[0044] The cooling tower 2 is equipped with a cooling water supply pipe 22 at the bottom of its side. The cooling water supply pipe 22 is located inside the cooling tower 2 and is equipped with a water inlet 23. The cooling water supply pipe 22 is connected to the water inlet 23, which is located below the liquid level in the cooling tower tray 21. The underwater water supply method uses the hot water in the cooling tower tray 21 to preheat the cooling water supply pipe 22, which reduces the workload of the heating device 7.

[0045] A water supply valve 24 is installed between the cooling water supply pipe 22 and the water supply port 23;

[0046] The cooling tower 2 is also equipped with a float 25, which floats on the liquid surface in the cooling tower tray 21 and is connected to the water supply valve 24 via a connecting rod to control the opening and closing of the water supply valve 24. The structure of the float 25 and the connecting rod has high mechanical transmission efficiency, reduces the failure rate in frosting and humid environments, and does not require additional power supply.

[0047] The cooling coil 1 is provided with a water inlet and a water outlet;

[0048] The cooling tower 2 is equipped with a water inlet and a water outlet;

[0049] The cooling water in the water distributor enters the cooling tower tray 21, passes through the outlet of the cooling tower 2 and enters the inlet of the cooling coil 1 to cool the data center equipment. After cooling, the water returns from the outlet of the cooling coil 1 to the inlet of the cooling tower 2 and enters the water distributor to complete the circulation.

[0050] The cooling tower 2 is equipped with a water pump 3 at its outlet to provide power for the circulation of cooling water. The water pump 3 is a variable frequency water pump. The variable frequency water pump can adjust the flow rate of the cooling water according to the actual situation, avoiding the risk of pipe freezing due to excessive flow.

[0051] The outlet of the cooling tower 2 is equipped with a water quality monitoring device 4 and a water quality purification device 5 to monitor and purify the cooling water in the cooling tower 2. When the water quality in the water quality monitoring device 4 reaches the monitoring lower limit, the water quality purification device 5 will be turned on so that the cooling water flows through the water quality purification device 5 for purification, to prevent pipe blockage and flow rate reduction caused by scaling, and to increase the risk of freezing.

[0052] The temperature sensing device 6 is used to monitor the temperature of the cooling water in the cooling tower tray 21. When the temperature sensing device 6 detects that the temperature of the cooling water is <5℃, the heating device 7 is activated to heat the cooling water in the cooling tower tray 21. The temperature sensing device 6 can monitor the temperature of the cooling water in the cooling tower tray 21 in real time, which is more energy-efficient than traditional heating devices.

[0053] The cooling water supply pipe 22 extends into the cooling tower 2 and is connected to the cooling tower 2 by welding at the contact surface. The welding method is more frost-resistant than the connection by flanges, preventing the cooling water supply pipe 22 from freezing and expanding and being damaged in winter due to leakage at the interface.

[0054] The cooling water supply pipe 22 is parallel to the bottom surface of the cooling tower 2 and perpendicular to the side surface of the cooling tower 2; the water flow direction of the vertically installed pipe is consistent with the natural convection direction in the water tank, which reduces the energy consumption of the water pump and avoids freezing in local dead water areas.

[0055] The cooling water supply pipe 22 is located outside the cooling tower 2 and is covered with an insulation structure.

[0056] The insulation structure is fixed to the outside of the cooling water supply pipe 22 by clips, with a clip spacing of 5 meters per clip, to prevent the insulation structure from falling off.

[0057] The insulation structure has a thickness of 30mm;

[0058] The heat preservation structure and the cooling water supply pipe 22 are spirally wound with a self-regulating electric heating cable for heating the cooling water supply pipe 22; the power of the self-regulating electric heating cable is automatically adjusted with the temperature, avoiding the risk of local overheating of traditional constant power heating cables, and the energy utilization rate is high.

[0059] The cooling tower 2 is covered with an insulation layer, which is fixed to the outside of the cooling tower 2 by adhesive.

[0060] The bottom side of the cooling tower 2 is equipped with a drain valve 26. When the data center unit A stops cooling, the drain valve 26 is opened to drain the water in the cooling tower 2 to prevent it from freezing and cracking.

[0061] As can be seen from the above, the open cooling tower water replenishment system of this utility model has a wide range of applications, low cost, and a very high market prospect.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any modifications or equivalent changes made based on the technical essence of the present utility model shall still fall within the scope of protection claimed by the present utility model.

Claims

1. An open cooling tower water supply system, characterized in that, The open cooling tower water supply system includes a data center unit (A) and a cooling unit (B). The data center unit (A) is equipped with a cooling coil (1). The cooling unit (B) includes a cooling tower (2); The cooling tower (2) has a water distributor at the top and a cooling tower tray (21) at the bottom. A temperature sensing device (6) and a heating device (7) are installed below the cooling tower tray (21). The cooling tower (2) is equipped with a cooling water supply pipe (22) at the bottom of its side. The cooling water supply pipe (22) is located inside the cooling tower (2) and is equipped with a water inlet (23). The cooling water supply pipe (22) is connected to the water inlet (23) which is located below the liquid level in the cooling tower tray (21). A water supply valve (24) is installed between the cooling water supply pipe (22) and the water supply port (23); The cooling tower (2) is also equipped with a float (25), which floats on the liquid surface in the cooling tower tray (21) and is connected to the water supply valve (24) via a connecting rod to control the opening and closing of the water supply valve (24).

2. The open cooling tower water supply system according to claim 1, characterized in that, The cooling tower (2) is equipped with a water pump (3) at its outlet to provide power for the circulation of cooling water. The water pump (3) is a variable frequency water pump.

3. The open cooling tower water supply system according to claim 1, characterized in that, The outlet of the cooling tower (2) is equipped with a water quality monitoring device (4) and a water quality purification device (5) to monitor and purify the cooling water in the cooling tower (2).

4. The open cooling tower water supply system according to claim 1, characterized in that, The temperature sensing device (6) is used to monitor the temperature of the cooling water in the cooling tower tray (21). When the temperature sensing device (6) detects that the temperature of the cooling water is <5℃, the heating device (7) starts to heat the cooling water in the cooling tower tray (21).

5. The open cooling tower water supply system according to claim 1, characterized in that, The cooling water supply pipe (22) extends into the cooling tower (2) and is connected to the cooling tower (2) by welding.

6. The open cooling tower water supply system according to claim 1, characterized in that, The cooling water supply pipe (22) is parallel to the bottom surface of the cooling tower (2) and perpendicular to the side surface of the cooling tower (2).

7. The open cooling tower water supply system according to claim 1, characterized in that, The cooling water supply pipe (22) is located outside the cooling tower (2) and is covered with an insulation structure.

8. The open cooling tower water supply system according to claim 7, characterized in that, The heat insulation structure and the cooling water supply pipe (22) are spirally wound with a self-regulating electric heating tape for heating the cooling water supply pipe (22).

9. The open cooling tower water supply system according to claim 1, characterized in that, The cooling tower (2) is covered with an insulation layer, which is fixed to the outside of the cooling tower (2) by adhesive bonding.

10. The open cooling tower water supply system according to claim 1, characterized in that, The cooling tower (2) is equipped with a drain valve (26) on its side bottom.

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