A cave-type data center built based on an underground river, and its construction method and operation method

Abstract

The present invention discloses a cave-type data center constructed based on an underground river, as well as its construction method and operation method, belonging to the technical field of cave-type data center construction. The data center includes a mountain body, in which an underground river is developed, and the underground river flows through a karst cave in the mountain body. On one side or both sides of the underground river in the mountain body, a number of equipment storage tunnels are provided. The number of the equipment storage tunnels are respectively connected to the karst cave through a slope connecting tunnel. An equipment cabinet and a liquid heat exchanger are arranged in the equipment storage tunnel. A river water conveying assembly is connected to the liquid heat exchanger. One end of the river water conveying assembly far away from the liquid heat exchanger passes through the slope connecting tunnel and extends into the underground river. The liquid cooling method is used to cool and dissipate heat from the equipment cabinet. This direct temperature control method significantly improves the heat dissipation and cooling effect on the IT equipment cabinet. At the same time, the heat exchange efficiency is high, and the operation energy consumption of the data center can be reduced.

Description

Technical Field

[0001] The present invention relates to a cave - type data center built based on an underground river, and its construction method and operation method, belonging to the technical field of cave - type data center construction. Background Art

[0002] As a carrier of massive data, the demand for data centers has increased significantly, and its construction market will be in a rapid development stage for a long time. To meet the requirements of the security performance of data centers, cave - type data centers that are integrally buried inside mountains have been proposed and constructed in Guizhou region. Using the external mountain as a shelter, they are significantly superior to other types of data centers in terms of structural protection ability and have become a new direction for the development of data centers. However, the mountain outside the cave - type data center is relatively enclosed and cannot meet the rapid heat dissipation requirements of the IT equipment in the data center.

[0003] Chinese patent document with the publication number CN118292682A discloses a combined ecological building complex of a cave - type data center. During operation, when the computers in the horizontal data center chamber are working, heat is continuously generated, causing the air to rise steadily and accumulate in the arch of the horizontal data center chamber. At this time, the ceiling suction fan absorbs the hot air accumulated at the top of the cross - section of the horizontal data center chamber and transmits it through the hot air delivery pipe to the first heat exchanger. The first heat exchanger converts the hot air into cold air through heat absorption treatment and transmits it outward through the cold air delivery pipe, and then relatively evenly diffuses it into the horizontal data center chamber through the side - standing air supply fans arranged at the side wall position of the horizontal data center chamber, thereby realizing the temperature control regulation of the horizontal data center chamber.

[0004] However, this cave - type data center still has the following deficiencies:

[0005] First, by regulating the air temperature in the horizontal data center chamber to achieve the purpose of dissipating heat and cooling the IT equipment in the data center, this indirect temperature control method has extremely limited effects on the heat dissipation and cooling of IT equipment.

[0006] Second, the air in the horizontal data center chamber exchanges heat with the IT equipment, the first heat exchanger, and inside the first heat exchanger all by air, with low heat exchange efficiency, further reducing the heat dissipation and cooling effects of the air in the horizontal data center chamber on the IT equipment, and increasing the operating energy consumption of the cave - type data center.

[0007] Third, the continuous operation of the additional ceiling suction fan and side - standing air supply fans will also increase the operating energy consumption of the cave - type data center. Summary of the Invention

[0008] To solve the above technical problems, the present invention provides a cavern - type data center built based on an underground river, as well as its construction method and operation method.

[0009] The present invention is achieved through the following technical solutions:

[0010] A cavern - type data center built based on an underground river, including a mountain body. An underground river is developed in the mountain body, and the underground river flows through a karst cave in the mountain body. On one side or both sides of the underground river in the mountain body, there are several equipment storage tunnels. The several equipment storage tunnels are respectively connected to the karst cave through slope - connecting tunnels. The bottom elevation of the equipment storage tunnel is higher than the highest water level of the underground river, and the end of the slope - connecting tunnel close to the karst cave slopes downward relative to the other end. Equipment cabinets and liquid heat exchangers are provided in the equipment storage tunnels. The liquid heat exchangers are connected to the equipment cabinets through a coolant delivery assembly. A river water delivery assembly is connected to the liquid heat exchangers. The end of the river water delivery assembly far from the liquid heat exchanger passes through the slope - connecting tunnel and extends into the underground river;

[0011] The river water delivery assembly includes a river water cold pipe and a river water heat pipe. One end of the river water cold pipe is connected to the water inlet of the liquid heat exchanger, and the other end extends into the underground river, and a river water circulation pump is installed at this end. One end of the river water heat pipe is connected to the water outlet of the liquid heat exchanger, and the other end extends above the underground river or extends into the underground river, and this end is located downstream of the river water circulation pump;

[0012] A jacket is provided on the outer wall of the equipment cabinet;

[0013] The coolant delivery assembly includes a coolant cold pipe and a coolant heat pipe. Both the coolant cold pipe and the coolant heat pipe are connected to the jacket on the outer wall of the equipment cabinet and the liquid heat exchanger, and a coolant circulation pump is provided on the coolant cold pipe.

[0014] A layer of steel fiber shotcrete is provided on the inner wall of the karst cave.

[0015] The several equipment storage tunnels are arranged side by side and arranged transversely along the underground river.

[0016] When equipment storage tunnels are provided on both sides of the underground river in the mountain body, the equipment storage tunnels on one side of the underground river are connected to the equipment storage tunnels on the other side of the underground river in one - to - one correspondence through suspension bridges.

[0017] On one side or both sides of the mountain body outside the underground river, there are roads and supporting buildings. The roads are connected to the entrances of all the equipment storage tunnels on the same side of the underground river as them. The supporting buildings are provided on one side of the road and are arranged close to the road.

[0018] A power tunnel is also provided in the mountain body, and the bottom elevation of the power tunnel is higher than the highest water level of the underground river. One end of the power tunnel is connected to the karst cave, and the other end is connected to the road. A voltage conversion device, a distribution box, and a power storage device are provided in the power tunnel. The distribution box and the power storage device are both electrically connected to the voltage conversion device, and the distribution box is electrically connected to the power storage device;

[0019] Multiple waterproof cables A are connected to the distribution box, and the ends of the waterproof cables A far from the distribution box extend into the power tunnel, the karst cave, the slope connection tunnel, or the equipment storage tunnel.

[0020] A water retaining dam is provided on the underground river near the power tunnel, and the water retaining dam is located in the karst cave. The maximum water storage level elevation of the water retaining dam is lower than the bottom elevation of the equipment storage tunnel.

[0021] A hydroelectric power generation device is provided in the water retaining dam, and multiple pipeline arrangement hanging parts are provided in the karst cave. The hydroelectric power generation device is electrically connected to the voltage conversion device in the power tunnel through a waterproof cable B, and the middle part of the waterproof cable B is installed on the pipeline arrangement hanging part.

[0022] A construction method of a cave-type data center built based on an underground river is characterized by including the following steps:

[0023] Step 1: Select a mountain body, an underground river, and a karst cave where the cave-type data center is to be built, and build a road and a construction access road outside the selected mountain body;

[0024] Step 2: Number the equipment storage tunnels on both sides of the underground river respectively. Take the odd-numbered sequences on one side of the underground river and the even-numbered sequences on the other side of the underground river as the equipment storage tunnels for the first batch of construction, and take all the remaining equipment storage tunnels as the second batch;

[0025] Step 3: First, construct the equipment storage tunnels of the first batch. After the construction length of the equipment storage tunnels of the first batch exceeds 50 meters, start constructing the equipment storage tunnels of the second batch;

[0026] The power tunnel is constructed synchronously with the equipment storage tunnels of the first batch until it is connected to the karst cave, and ensure that the bottom elevation of the power tunnel is higher than the highest water level of the underground river;

[0027] The construction directions of all the equipment storage tunnels and the power tunnel are gradually advanced from the road side to the underground river side;

[0028] Step 4: After the equipment storage tunnels of the first batch are constructed to the designed length, continue to construct the slope connection tunnels corresponding to the equipment storage tunnels of the first batch;

[0029] Step 5: After the construction of the equipment storage tunnels of the second batch reaches the designed length, continue to construct the ramp connecting tunnels corresponding to the equipment storage tunnels of the second batch;

[0030] Step 6: After the construction of all the ramp connecting tunnels is completed, use the construction suspension bridge to connect the equipment storage tunnels on both sides of the underground river one by one;

[0031] Step 7: Using the suspension bridge as a working platform, clean the dangerous rocks on the inner wall of the karst cave, and then spray steel fiber shotcrete on the inner wall of the karst cave to reinforce the inner wall of the karst cave;

[0032] Step 8: Using the power tunnel as a material transportation channel, construct the water retaining dam;

[0033] Step 9: Construct the supporting buildings, and complete the equipment installation and connection work in the power tunnel, water retaining dam, ramp connecting tunnels and equipment storage tunnels.

[0034] During the construction of the ramp connecting tunnels in Step 4 and Step 5, the penetration times of multiple ramp connecting tunnels with the karst cave are staggered from each other.

[0035] An operation method of a cave-type data center built based on an underground river, characterized by including the following steps:

[0036] Step A: Seal the two ends of the equipment storage tunnel, and fill the equipment storage tunnel with non-combustible gas;

[0037] Step B: Start the coolant circulation pump to make the coolant circulate in the jacket on the outer wall of the equipment cabinet, coolant cold pipes, coolant heat pipes and liquid heat exchangers;

[0038] Step C: Start the river water circulation pump to pump the river water in the underground river into the liquid heat exchanger for heat exchange with the coolant. The coolant that has completed heat exchange in the liquid heat exchanger flows back to the jacket on the outer wall of the equipment cabinet to cool and dissipate heat from the equipment cabinet. The river water that has completed heat exchange in the liquid heat exchanger is discharged into the underground river downstream of the river water circulation pump through the river water heat pipe.

[0039] After the equipment storage tunnel is filled with non-combustible gas, the oxygen concentration inside is lower than 15%.

[0040] The beneficial effects of the present invention are as follows:

[0041] 1. Through the river water delivery component, the river water in the underground river is delivered to the liquid heat exchanger. The river water exchanges heat with the coolant in the liquid heat exchanger, and the coolant cooled by the river water is delivered to the equipment cabinet through the coolant delivery component to directly cool and dissipate heat from the equipment cabinet. This direct temperature control method significantly improves the heat dissipation and cooling effect of the IT equipment cabinet.

[0042] 2. On the one hand, making full use of natural karst caves to build cave-style data centers reduces the excavation volume of cave-style data centers and can significantly lower the construction cost of cave-style data centers. On the other hand, making full use of the natural and cold underground river water to exchange heat with the coolant in the liquid heat exchanger, and finally achieving heat dissipation and temperature reduction of the IT equipment cabinets through the coolant, significantly reduces the operating cost of cave-style data centers.

[0043] 3. Using the river water to exchange heat with the coolant in the liquid heat exchanger realizes the effective utilization of natural resources and reduces the operating cost of cave-style data centers. In addition, the continuous river water can continuously maintain a relatively low temperature, ensuring the heat exchange efficiency and effect between it and the coolant, and further guaranteeing the heat dissipation and temperature reduction effect of the coolant on the IT equipment cabinets. The river water that has completed heat exchange with the coolant in the liquid heat exchanger is discharged into the underground river water downstream of the river water circulation pump through the river water heat pipe, with low energy consumption. At the same time, it can avoid the hot water discharged by the river water heat pipe from causing the temperature of the river water at the river water circulation pump to rise, thereby ensuring that the river water pumped into the liquid heat exchanger continuously maintains a low temperature, achieving the purpose of ensuring the heat exchange effect between the river water and the coolant in the liquid heat exchanger.

[0044] 4. Compared with the heat exchange method of using air to exchange heat with air in the prior art, using river water to exchange heat with the coolant has a high heat exchange efficiency, can improve the heat dissipation and temperature reduction effect of the coolant on the IT equipment cabinets, and also helps to reduce the operating energy consumption of cave-style data centers. There is no need to add equipment such as suction fans and supply fans to continuously operate for heat dissipation and temperature reduction of the equipment cabinets, further reducing the operating energy consumption of cave-style data centers.

[0045] 5. The main structure of the data center is all set inside the mountain body, significantly improving the structural protection ability of the entire data center and effectively meeting the information data security protection requirements during wartime.

[0046] 6. The hydropower equipment installed in the water retaining dam, in cooperation with the voltage conversion equipment, distribution box and power storage equipment in the power tunnel, provides the electrical energy required for the operation of the electrical equipment in the data center, thereby realizing the green and low-carbon operation of the data center. In addition, the voltage conversion equipment is also electrically connected to the external power grid line. When the hydropower equipment fails or the power generation is insufficient, or when the underground river is in the dry season, the external power grid line can be used to assist in power supply to the voltage conversion equipment, further ensuring the continuous, safe and stable operation of the cave-style data center. In the extreme case where neither the hydropower equipment nor the external power grid line can supply power to the electrical equipment in the data center, power supply can also be carried out through the storage battery.

[0047] 7. The equipment storage tunnels on both sides of the underground river are constructed in two batches. After the excavation length of the first batch of equipment storage tunnels exceeds 50 meters, the excavation of the second batch of equipment storage tunnels begins, so as to reduce the mutual interference between adjacent equipment storage tunnels during construction and at the same time help ensure the structural stability of the mountain body and the karst cave.

[0048] 8. Inert and non-combustible gases such as nitrogen are filled into the equipment storage tunnels, and the oxygen concentration in the equipment storage tunnels is ensured to be lower than 15%, thereby avoiding fires in the equipment storage tunnels and significantly improving the operation safety of the cave-type data center. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic structural diagram of the present invention in Embodiment 1;

[0050] Figure 2 It is a longitudinal sectional view of the present invention in Embodiment 1;

[0051] Figure 3 It is a schematic assembly structural diagram of the equipment storage tunnel, equipment cabinet, liquid heat exchanger, coolant delivery assembly, river water delivery assembly, ramp connection tunnel, karst cave, suspension bridge, hot wastewater discharge pipe and underground river of the present invention in Embodiment 1;

[0052] Figure 4 It is a schematic assembly structural diagram of the power tunnel, karst cave, underground river, barrage dam and hot wastewater discharge pipe of the present invention in Embodiment 1;

[0053] Figure 5 It is a power supply principle block diagram of the hydroelectric power equipment of the present invention;

[0054] Figure 6 It is a schematic structural diagram when the air in the equipment storage tunnel of the present invention is replaced in Embodiment 2;

[0055] Figure 7 It is a layout plan of the present invention in Embodiment 3;

[0056] Figure 8 It is a schematic assembly structural diagram of the equipment storage tunnel, equipment cabinet, liquid heat exchanger, coolant delivery assembly, river water delivery assembly, ramp connection tunnel, karst cave, hot wastewater discharge pipe and underground river of the present invention in Embodiment 3;

[0057] Figure 9 It is a schematic structural diagram when the air in the equipment storage tunnel of the present invention is replaced in Embodiment 4.

[0058] In the figure: 1 - mountain body, 2 - underground river, 3 - karst cave, 31 - pipeline layout hanging piece, 4 - equipment storage tunnel, 5 - slope connecting tunnel, 6 - water retaining dam, 61 - hydraulic power generation equipment, 7 - equipment cabinet, 8 - liquid heat exchanger, 81 - coolant conveying assembly, 811 - coolant cold pipe, 812 - coolant heat pipe, 813 - coolant circulation pump, 83 - river water conveying assembly, 831 - river water cold pipe, 832 - river water heat pipe, 833 - river water circulation pump, 9 - hot waste water discharge pipe, 10 - power tunnel, 101 - voltage conversion equipment, 102 - distribution box, 103 - power storage equipment, 11 - road, 12 - supporting building, 13 - suspension bridge, 14 - waterproof cable A, 15 - waterproof cable B. Detailed implementation manner

[0059] The technical solution of the present invention will be further described below, but the scope of protection is not limited thereto.

[0060] Embodiment 1:

[0061] As Figures 1 to 5 shown, a cave - type data center built based on an underground river of the present invention includes a mountain body 1. An underground river 2 is developed in the mountain body 1, and the underground river 2 flows through a karst cave 3 in the mountain body 1. On both sides of the underground river 2 in the mountain body 1, a plurality of equipment storage tunnels 4 are provided. The plurality of equipment storage tunnels 4 are respectively communicated with the karst cave 3 through slope connecting tunnels 5. The bottom elevation of the equipment storage tunnel 4 is higher than the highest water level of the underground river 2, and one end of the slope connecting tunnel 5 close to the karst cave 3 is inclined downward relative to the other end. An equipment cabinet 7 and a liquid heat exchanger 8 are provided in the equipment storage tunnel 4. The liquid heat exchanger 8 is connected to the equipment cabinet 7 through a coolant conveying assembly 81. A river water conveying assembly 83 is connected to the liquid heat exchanger 8. One end of the river water conveying assembly 83 far from the liquid heat exchanger 8 passes through the slope connecting tunnel 5 and extends into the underground river 2.

[0062] During use, the bottom elevation of the equipment storage tunnel 4 is higher than the highest water level of the underground river 2, and one end of the slope connecting tunnel 5 close to the karst cave 3 is inclined downward relative to the other end, which can prevent the river water in the underground river 2 from pouring into the equipment storage tunnel 4, effectively ensuring the safe operation of the equipment installed in the equipment storage tunnel 4.

[0063] The river water conveying component 83 conveys the river water in the underground river 2 to the liquid heat exchanger 8. The river water exchanges heat with the coolant in the liquid heat exchanger 8. The coolant cooled by the river water is conveyed to the equipment cabinet 7 through the coolant conveying component 81 to directly cool and dissipate heat from the equipment cabinet 7. This direct temperature control method significantly improves the heat dissipation and cooling effect on the IT equipment cabinet 7. Compared with the existing method of heat exchange between air and air, using river water to exchange heat with the coolant has a high heat exchange efficiency, can improve the heat dissipation and cooling effect of the coolant on the IT equipment cabinet 7, and also helps to reduce the operating energy consumption of the cave-type data center. There is no need to add equipment such as suction fans and supply fans to continuously operate for heat dissipation and cooling of the equipment cabinet 7, further reducing the operating energy consumption of the cave-type data center.

[0064] On the one hand, making full use of the natural karst cave 3 to build a cave-type data center reduces the excavation volume of the cave-type data center and can significantly reduce the construction cost of the cave-type data center; on the other hand, making full use of the natural and cold river water in the underground river 2 to exchange heat with the coolant in the liquid heat exchanger 8, and finally achieving heat dissipation and cooling of the IT equipment cabinet 7 through the coolant, significantly reducing the operating cost of the cave-type data center.

[0065] The river water conveying component 83 includes a river water cold pipe 831 and a river water heat pipe 832. One end of the river water cold pipe 831 is connected to the water inlet of the liquid heat exchanger 8, and the other end extends into the underground river 2, and a river water circulation pump 833 is installed at this end. One end of the river water heat pipe 832 is connected to the water outlet of the liquid heat exchanger 8, and the other end extends above the underground river 2 or extends into the underground river 2, and this end is located downstream of the river water circulation pump 833. The river water in the underground river 2 is pumped to the liquid heat exchanger 8 by the river water circulation pump 833, and the river water exchanges heat with the coolant in the liquid heat exchanger 8, so as to achieve the purpose of cooling the coolant; using the river water to exchange heat with the coolant in the liquid heat exchanger 8 realizes the effective utilization of natural resources and reduces the operating cost of the cave-type data center. In addition, the continuous river water can continuously maintain a relatively low temperature, ensuring its heat exchange efficiency and heat exchange effect with the coolant, and further ensuring the heat dissipation and cooling effect of the coolant on the IT equipment cabinet 7; the river water that has completed heat exchange with the coolant in the liquid heat exchanger 8 is discharged into the river water in the underground river 2 downstream of the river water circulation pump 832 through the river water heat pipe 832, with low energy consumption; at the same time, it can avoid the hot water discharged from the river water heat pipe 832 from causing the temperature of the river water at the river water circulation pump 833 to rise, thereby ensuring that the river water pumped into the liquid heat exchanger 8 continuously maintains a low temperature, achieving the purpose of ensuring the heat exchange effect between the river water and the coolant in the liquid heat exchanger 8.

[0066] A jacket is provided on the outer wall of the equipment cabinet 7.

[0067] The coolant delivery assembly 81 includes a coolant cold pipe 811 and a coolant heat pipe 812. Both the coolant cold pipe 811 and the coolant heat pipe 812 are connected to the jacket on the outer wall of the equipment cabinet 7 and the liquid heat exchanger 8, and a coolant circulation pump 813 is provided on the coolant cold pipe 811.

[0068] A shotcrete layer with steel fibers is provided on the inner wall of the karst cave 3. The inner wall of the karst cave 3 is reinforced and sealed by the shotcrete layer with steel fibers, thereby improving the stability of the karst cave 3.

[0069] A plurality of the equipment storage tunnels 4 are arranged side by side and are arranged transversely along the underground river 2.

[0070] When equipment storage tunnels 4 are provided on both sides of the underground river 2 inside the mountain body 1, the equipment storage tunnels 4 on one side of the underground river 2 are connected to the equipment storage tunnels 4 on the other side of the underground river 2 in one-to-one correspondence through suspension bridges 13. Staff can enter the equipment storage tunnels 4 on the other side of the underground river 2 from the equipment storage tunnels 4 on one side of the underground river 2 via the suspension bridges 13, which is convenient for staff to manage, maintain, and repair the equipment in the equipment storage tunnels 4.

[0071] Roads 11 and supporting buildings 12 are provided on both sides of the underground river 2 outside the mountain body 1. The roads 11 are connected to the entrances of all the equipment storage tunnels 4 on the same side of the underground river 2 as them, and the supporting buildings 12 are arranged on one side of the roads 11 and are close to the roads 11. The supporting buildings 12 include dormitories, canteens, and so on.

[0072] A power tunnel 10 is also provided inside the mountain body 1, and the bottom elevation of the power tunnel 10 is higher than the highest water level of the underground river 2. One end of the power tunnel 10 is communicated with the karst cave 3, and the other end is connected to the road 11. A voltage conversion device 101, a distribution box 102, and a power storage device 103 are provided in the power tunnel 10. Both the distribution box 102 and the power storage device 103 are electrically connected to the voltage conversion device 101, and the distribution box 102 is electrically connected to the power storage device 103;

[0073] A plurality of waterproof cables A14 are connected to the distribution box 102, and one end of the waterproof cable A14 far from the distribution box 102 extends into the power tunnel 10, the karst cave 3, the slope connecting tunnel 5 or the equipment storage tunnel 4. During use, the voltage conversion device 101 is a step-down transformer, and the power storage device 103 includes a rectifier, a storage battery and an inverter. The electricity stepped down by the step-down transformer is directly supplied to the distribution box 102 to supply power to the electrical equipment of the present invention, and the other part is supplied to the rectifier and stored in the storage battery after being rectified by the rectifier. When the hydroelectric power generation device 61 has a short-term fault, or when the water volume of the underground river 2 is insufficient, resulting in the generated power of the hydroelectric power generation device 61 being insufficient to maintain the operation of the cave-type data center, the direct current output by the storage battery is converted into alternating current by the inverter and then supplied to the distribution box 102 to supply power to the electrical equipment of the present invention, ensuring the continuous, safe and stable operation of the cave-type data center. Power distribution is carried out through the distribution box 102, and the distribution box 102 is electrically connected to each electrical equipment of the cave-type data center through the waterproof cable A14, and the middle part of the waterproof cable A14 can be installed on the pipeline layout hanging part 31.

[0074] A water retaining dam 6 is provided on the underground river 2 near the power tunnel 10, and the water retaining dam 6 is located in the karst cave 3. The maximum water storage level elevation of the water retaining dam 6 is lower than the elevation of the bottom surface of the equipment storage tunnel 4. Building a water retaining dam 6 on the underground river 2 ensures that there is sufficient river water for heat exchange with the coolant in the liquid heat exchanger 8 throughout the year, further ensuring the cooling and heat dissipation effect of the coolant on the IT equipment cabinet 7. The maximum water storage level elevation of the water retaining dam 6 is lower than the elevation of the bottom surface of the equipment storage tunnel 4 to prevent the river water of the underground river 2 from flowing into the equipment storage tunnel 4.

[0075] It further includes a hot waste water discharge pipe 9. One end of the hot waste water discharge pipe 9 is connected to the water outlet of the river water heat pipe 832, and the other end passes through the water retaining dam 6 and extends to the downstream of the water retaining dam 6 to discharge the hot river water to the downstream of the water retaining dam 6 through the hot waste water discharge pipe 9, avoiding discharging the hot river water into the reservoir area of the water retaining dam 6, so that the water body in the reservoir area of the water retaining dam 6 can continuously maintain a lower temperature, further ensuring the heat exchange effect between the river water of the underground river 2 and the coolant in the liquid heat exchanger 8.

[0076] A hydroelectric power generation device 61 is provided in the water retaining dam 6, and a plurality of pipeline layout hanging parts 31 are provided in the karst cave 3. The hydroelectric power generation device 61 is electrically connected to the voltage conversion device 101 in the power tunnel 10 through a waterproof cable B15, and the middle part of the waterproof cable B15 is installed on the pipeline layout hanging part 31. During use, the hydroelectric power generation device 61 includes a hydroelectric generating set and a step-up transformer to step up the electricity output by the hydroelectric generating set through the step-up transformer. The step-up transformer is connected to the voltage conversion device 101 and the external power grid line through cables respectively to realize power supply and transmission. In addition, asFigure 5 As shown, the voltage conversion device 101 is also electrically connected to the external power grid line. When the hydropower generation device 61 fails or the power generation is insufficient, the external power grid line can be used to supply power to the voltage conversion device 101, further ensuring the continuous, safe and stable operation of the cave-type data center.

[0077] When the water volume of the underground river 2 significantly decreases and cannot maintain the water volume required for the operation of the hydropower generation device 61, the water retaining dam 6 is only used for water storage, and the hydropower generation device 61 is no longer started for power generation. At this time, the cave-type data center is powered by the external power grid line to ensure the continuous, safe and stable operation of the cave-type data center during the dry season.

[0078] The priority order for power supply to the cave-type data center is: power supply by the hydropower generation device 61, power supply by the external power grid line, and power supply by the storage battery.

[0079] A construction method for a cave-type data center built based on an underground river, characterized by comprising the following steps:

[0080] Step 1: Select the mountain body 1, underground river 2 and karst cave 3 where the cave-type data center is to be built, and build a road 11 and a construction access road outside the selected mountain body 1. When selecting, it is required that the water source of the underground river 2 is relatively abundant and the cross-section of the karst cave 3 is relatively large. In addition, there should be no major unfavorable geological bodies in the mountain body 1 to ensure construction safety and controllable construction costs, and the size of the mountain body 1 should be moderate to ensure that the equipment storage tunnel 4 is not too long or too short. It is advisable to control the length of the equipment storage tunnel 4 between 200m and 500m.

[0081] Step 2: Number the equipment storage tunnels 4 on both sides of the underground river 2 respectively. The odd-numbered sequences on one side of the underground river 2 and the even-numbered sequences on the other side of the underground river 2 are used as the equipment storage tunnels 4 for the first batch of construction, and the remaining all equipment storage tunnels 4 are used as the second batch. The equipment storage tunnels 4 on both sides of the underground river 2 are constructed in two batches to reduce the mutual interference between adjacent equipment storage tunnels 4 during construction, and at the same time help to ensure the structural stability of the mountain body 1 and the karst cave 3.

[0082] Step 3: First construct the first batch of equipment storage tunnels 4. After the construction length of the first batch of equipment storage tunnels 4 exceeds 50 meters, start constructing the second batch of equipment storage tunnels 4;

[0083] The power tunnel 10 is constructed synchronously with the first batch of equipment storage tunnels 4 until it is connected to the karst cave 3, and it is ensured that the bottom elevation of the power tunnel 10 is higher than the highest water level of the underground river 2;

[0084] The construction directions of all the equipment storage tunnels 4 and the power tunnels 10 are gradually advanced from the side of the road 11 towards the side of the underground river 2. After the excavation length of the first batch of equipment storage tunnels 4 exceeds 50 meters, the excavation of the second batch of equipment storage tunnels 4 is started to reduce the mutual interference between the first batch and the second batch of equipment storage tunnels 4 during the construction process, and at the same time, it helps to ensure the structural stability of the mountain body 1 and the karst cave 3.

[0085] Step Four: After the first batch of equipment storage tunnels 4 are constructed to the designed length, continue to construct the slope connecting tunnels 5 corresponding to the first batch of equipment storage tunnels 4.

[0086] Step Five: After the second batch of equipment storage tunnels 4 are constructed to the designed length, continue to construct the slope connecting tunnels 5 corresponding to the second batch of equipment storage tunnels 4.

[0087] Step Six: After all the slope connecting tunnels 5 are constructed, construct the suspension bridge 13 to connect the equipment storage tunnels 4 on both sides of the underground river 2 one by one.

[0088] Step Seven: Using the suspension bridge 13 as a working platform, clean the dangerous rocks on the inner wall of the karst cave 3, and then spray steel fiber shotcrete on the inner wall of the karst cave 3 to reinforce the inner wall of the karst cave 3.

[0089] Step Eight: Using the power tunnel 10 as a material transportation channel, construct the water retaining dam 6. When constructing the water retaining dam 6, use the power tunnel 10 as a channel for hoisting and transporting construction materials such as concrete pumping and steel bars.

[0090] Step Nine: Construct the supporting building 12, and complete the equipment installation and connection work in the power tunnel 10, the water retaining dam 6, the slope connecting tunnels 5 and the equipment storage tunnels 4.

[0091] When constructing the slope connecting tunnels 5 in Step Four and Step Five, the penetration times of multiple slope connecting tunnels 5 are staggered from each other to ensure the structural stability of the karst cave 3.

[0092] An operation method of a cave - type data center constructed based on an underground river, characterized by including the following steps:

[0093] Step A: Seal the two ends of the equipment storage tunnel 4 and fill the equipment storage tunnel 4 with non - combustible gas;

[0094] Step B: Start the coolant circulation pump 813 to make the coolant circulate in the jacket on the outer wall of the equipment cabinet 7, the coolant cold pipe 811, the coolant heat pipe 812 and the liquid heat exchanger 8.

[0095] Step C: Start the river water circulation pump 833 to pump the river water in the underground river 2 into the liquid heat exchanger 8 for heat exchange with the coolant. The coolant that has completed heat exchange in the liquid heat exchanger 8 flows back into the jacket on the outer wall of the equipment cabinet 7 to cool and dissipate heat from the equipment cabinet 7. The river water that has completed heat exchange in the liquid heat exchanger 8 is discharged into the underground river 2 downstream of the river water circulation pump 833 through the river water heat pipe 832.

[0096] After the non-combustible gas is filled into the equipment storage tunnel 4, the internal oxygen concentration is lower than 15%. During use, the minimum oxygen concentration for the combustion of electrical equipment is 15%. The combustion of combustibles is an oxidation process that requires a minimum oxygen concentration above this level to occur. When the oxygen concentration is lower than 15%, combustion cannot be sustained, and the fire is extinguished.

[0097] Therefore, harmless non-combustible gases such as nitrogen are filled into the equipment storage tunnel 4 to ensure that the oxygen concentration in the equipment storage tunnel 4 is lower than 15%, thereby avoiding fires in the equipment storage tunnel 4. There are usually few staff in the data center. If it is necessary to enter the equipment storage tunnel 4, they can enter after wearing oxygen supply equipment.

[0098] Embodiment 2:

[0099] As Figure 6 shown, when equipment storage tunnels 4 are provided on both sides of the underground river 2 and ventilation is required in the equipment storage tunnels 4, the air flow direction in the equipment storage tunnel 4 on one side of the underground river 2 is from the road 11 side to the karst cave 3 side, and the air flow direction in the equipment storage tunnel 4 on the other side of the underground river 2 is from the karst cave 3 side to the road 11 side. The air flow direction control in the equipment storage tunnel 4 can be achieved by installing axial fans at the top of the equipment storage tunnel 4 and the ramp connection tunnel 5, and the purpose of ventilating the equipment storage tunnel 4 can be achieved.

[0100] Embodiment 3:

[0101] As Figure 7 and Figure 8 shown, the difference between Embodiment 3 and Embodiment 1 is that multiple equipment storage tunnels 4 are provided only on one side of the underground river 2, and there is no suspension bridge 13.

[0102] Embodiment 4:

[0103] As Figure 9 shown, when multiple equipment storage tunnels 4 are provided only on one side of the underground river 2 and ventilation is required in the equipment storage tunnels 4, some of the equipment storage tunnels 4 are used for air intake, and some of the equipment storage tunnels 4 are used for air exhaust. The air flow direction control in the equipment storage tunnel 4 can be achieved by installing axial fans at the top of the equipment storage tunnel 4 and the ramp connection tunnel 5, and the purpose of ventilating the equipment storage tunnel 4 can be achieved.

Claims

1. A cave-type data center built on an underground river, characterized by: The invention comprises a mountain (1), wherein an underground river (2) is developed in the mountain (1), and the underground river (2) flows through a karst cave (3) in the mountain (1), and a plurality of equipment storage tunnels (4) are arranged on one side or both sides of the underground river (2) in the mountain (1), and the plurality of equipment storage tunnels (4) are connected to the karst cave (3) through slope connection tunnels (5), respectively, and the bottom elevation of the equipment storage tunnel (4) is higher than the highest water level of the underground river (2), and the upper surface of the slope connection tunnel (5) is higher than the upper surface elevation of the underground river (2). One end close to the cave (3) is inclined downward relative to the other end. An equipment cabinet (7) and a liquid heat exchanger (8) are arranged in the equipment storage tunnel (4). The liquid heat exchanger (8) is connected to the equipment cabinet (7) via a coolant delivery component (81). A river water delivery component (83) is connected to the liquid heat exchanger (8). An end of the river water delivery component (83) away from the liquid heat exchanger (8) passes through the slope connection tunnel (5) and extends into the underground river (2); The river water transport component (83) comprises a river water cooling pipe (831) and a river water heat pipe (832); one end of the river water cooling pipe (831) is connected to the water inlet of the liquid heat exchanger (8), and the other end extends into the underground river (2), and a river water circulation pump (833) is installed at this end; one end of the river water heat pipe (832) is connected to the water outlet of the liquid heat exchanger (8), and the other end extends to directly above the underground river (2) or into the underground river (2), and this end is located downstream of the river water circulation pump (833); The outer wall of the equipment cabinet (7) is provided with a jacket; The coolant delivery assembly (81) comprises a coolant cooling pipe (811) and a coolant heat pipe (812); the coolant cooling pipe (811) and the coolant heat pipe (812) are both connected to a jacket on the outer wall of the equipment cabinet (7) and a liquid heat exchanger (8); and a coolant circulation pump (813) is provided on the coolant cooling pipe (811); A road (11) is provided outside the mountain (1) on one side or both sides of the underground river (2); A power tunnel (10) is also provided in the mountain (1), one end of the power tunnel (10) is connected to the cave (3), and the other end is connected to the road (11); A water retaining dam (6) is provided on the underground river (2) at a position close to the power tunnel (10), and the water retaining dam (6) is located in the karst cave (3), and the maximum water storage level elevation of the water retaining dam (6) is lower than the elevation of the bottom surface of the equipment storage tunnel (4); The water retaining dam (6) is provided with a hydroelectric power generation device (61); When the amount of water in the underground river (2) is reduced and cannot maintain the amount of water required for the operation of the hydroelectric generating equipment (61), the water retaining dam (6) is only used to store water and the hydroelectric generating equipment (61) is no longer started to generate electricity.

2. The cavern-type data center built based on an underground river as claimed in claim 1, characterized in that: A steel fiber shotcrete layer is provided on the inner wall of the cave (3).

3. The cavern-type data center built based on an underground river as claimed in claim 1, characterized in that: A plurality of the equipment storage tunnels (4) are arranged side by side and laterally along the underground river (2).

4. The cavern-type data center built based on a dark river as claimed in claim 1, characterized in that: When equipment storage tunnels (4) are provided on both sides of the underground river (2) in the mountain (1), the equipment storage tunnel (4) on one side of the underground river (2) is connected to the equipment storage tunnel (4) on the other side of the underground river (2) in a one-to-one correspondence via a suspension bridge (13).

5. The cavern-type data center built based on an underground river as claimed in claim 1, characterized in that: A supporting building (12) is provided outside the mountain (1) on one side or both sides of the underground river (2); the road (11) is connected to the openings of all equipment storage tunnels (4) on the same side of the underground river (2); the supporting building (12) is provided on one side of the road (11) and is arranged close to the road (11).

6. The cavern-type data center built based on a dark river as claimed in claim 5 is characterized by: The bottom elevation of the power tunnel (10) is higher than the highest water level of the underground river (2). A voltage conversion device (101), a distribution box (102) and a power storage device (103) are provided in the power tunnel (10), and the distribution box (102) and the power storage device (103) are both electrically connected to the voltage conversion device (101), and the distribution box (102) is electrically connected to the power storage device (103); The distribution box (102) is connected to a plurality of waterproof cables A (14), and one end of the waterproof cable A (14) away from the distribution box (102) extends into a power tunnel (10), a karst cave (3), a slope connection tunnel (5) or an equipment storage tunnel (4).

7. The cavernous data center built on the underground river as claimed in claim 1 is characterized by: A plurality of pipeline arrangement hangers (31) are provided in the karst cave (3); the hydroelectric power generation equipment (61) is electrically connected to the voltage conversion equipment (101) in the power tunnel (10) via a waterproof cable B (15); and the middle portion of the waterproof cable B (15) is mounted on the pipeline arrangement hanger (31).

8. A construction method for a cavernous data center built on an underground river as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Select a mountain (1), underground river (2) and karst cave (3) where a cave-type data center is to be built, and build a road (11) and a construction access road outside the selected mountain (1); Step 2: Number the equipment storage tunnels (4) on both sides of the underground river (2) respectively, and use the odd-numbered sequence on one side of the underground river (2) and the even-numbered sequence on the other side of the underground river (2) as the first batch of equipment storage tunnels (4) to be constructed, and use all the remaining equipment storage tunnels (4) as the second batch; Step 3: construct the first batch of equipment storage tunnels (4) first, and after the construction length of the first batch of equipment storage tunnels (4) exceeds 50 meters, start constructing the second batch of equipment storage tunnels (4); The power tunnel (10) is constructed simultaneously with the first batch of equipment storage tunnels (4) until it is connected to the karst cave (3), and it is ensured that the bottom elevation of the power tunnel (10) is higher than the highest water level of the underground river (2); The construction direction of all equipment storage tunnels (4) and power tunnels (10) is to gradually advance from the road (11) side to the underground river (2) side; Step 4: After the first batch of equipment storage tunnels (4) are constructed to the designed length, continue to construct the slope connection tunnel (5) corresponding to the first batch of equipment storage tunnels (4); Step 5: After the second batch of equipment storage tunnels (4) are constructed to the designed length, continue to construct the slope connection tunnel (5) corresponding to the second batch of equipment storage tunnels (4); Step 6: After all the slope connection tunnels (5) are constructed, a suspension bridge (13) is constructed to connect the equipment storage tunnels (4) on both sides of the underground river (2) one by one; Step 7: Using the suspension bridge (13) as a working platform, clear the dangerous rocks on the inner wall of the cave (3), and then spray steel fiber shotcrete on the inner wall of the cave (3) to reinforce the inner wall of the cave (3); Step 8: Using the power tunnel (10) as a material transportation channel, construct a water retaining dam (6); Step nine: construct supporting buildings (12), and complete the installation and connection of equipment in the power tunnel (10), the water retaining dam (6), the slope connection tunnel (5) and the equipment storage tunnel (4).

9. The construction method of a cave-type data center built based on an underground river as claimed in claim 8, characterized in that: When constructing the slope connection tunnel (5) in step 4 and step 5, the connection times of the plurality of slope connection tunnels (5) and the karst cave (3) are staggered.

10. An operating method of a cavern-type data center built based on an underground river according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step A, closing both ends of the equipment storage tunnel (4), and filling the equipment storage tunnel (4) with non-flammable gas; Step B, starting the coolant circulation pump (813) to allow the coolant to circulate in the jacket on the outer wall of the equipment cabinet (7), the coolant cold pipe (811), the coolant heat pipe (812) and the liquid heat exchanger (8); Step C, start the river water circulation pump (833) to pump the river water in the underground river (2) to the liquid heat exchanger (8) for heat exchange with the coolant. The coolant in the liquid heat exchanger (8) that has completed the heat exchange flows back to the jacket on the outer wall of the equipment cabinet (7) to cool and dissipate the heat of the equipment cabinet (7). The river water in the liquid heat exchanger (8) that has completed the heat exchange is discharged into the underground river (2) downstream of the river water circulation pump (833) through the river water heat pipe (832).

11. The method for operating a cavernous data center built on a dark river as claimed in claim 10, characterized in that: After the equipment storage tunnel (4) is filled with non-flammable gas, the oxygen concentration inside is lower than 15%.

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