Liquid cooling server cabinet with leakage alarm and control method thereof

Abstract

The present application relates to the field of server liquid cooling, and specifically discloses a liquid cooling server cabinet with leakage alarm and a control method thereof, comprising a water tank, a server containing box immersed in the water tank, a portion of the server containing box extending out of the top of the water tank and the server containing box filled with cooling oil so that the server is immersed in the cooling oil; the water tank has a water inlet pipe and a water outlet pipe; the liquid cooling server cabinet also includes a leakage alarm system, the leakage alarm system includes a liquid level sensor, a controller, and an alarm prompter, the liquid level sensor is located in the server containing box, when the liquid level is lower than the threshold, the liquid level sensor transmits a signal to the controller, and the controller controls the alarm prompter to alarm. The present application has an alarm when cooling oil leaks and effectively prevents water from entering the server containing box.

Description

Technical Field

[0001] The present application relates to the field of server liquid cooling, and in particular to a liquid cooling server cabinet with a leakage alarm and a control method thereof. Background Art

[0002] Immersion cooling technology is to immerse the heat-generating components of the server directly in an electrically insulating coolant. When the server is running, the heat generated is quickly transferred to the coolant, which circulates to take away the heat and then dissipates the heat to the external environment through a heat exchanger.

[0003] Immersion cooling can achieve very high heat dissipation efficiency. Since the coolant is in direct contact with the server hardware, the heat transfer path is short and the resistance is small, which can quickly remove the heat. This allows the server to run at higher power while maintaining a lower temperature.

[0004] Traditional data centers require a lot of space to install cooling equipment and ventilation ducts. Immersed servers can arrange servers closely in coolant containers, saving a lot of space.

[0005] However, existing immersion liquid cooling servers have the problem of cooling oil leakage, which needs to be solved urgently. Summary of the invention

[0006] In order to improve the problem of cooling liquid leakage, the present application provides a liquid cooling server cabinet with a leakage alarm.

[0007] The present application provides a liquid cooling server cabinet with a leakage alarm, which adopts the following technical solution: A liquid-cooled server cabinet with a leakage alarm, characterized in that it includes a water tank and a server containing box immersed in the water tank, wherein a portion of the server containing box extends out of the top of the water tank and the server containing box is filled with cooling oil so that the server is immersed in the cooling oil; the water tank has an inlet pipe and an outlet pipe; the liquid-cooled server cabinet also includes a leakage alarm system, which includes a liquid level sensor, a controller, and an alarm indicator, wherein the liquid level sensor is located in the server containing box, and when the liquid level is lower than a threshold value, the liquid level sensor transmits a signal to the controller, and the controller controls the alarm indicator to sound an alarm.

[0008] By adopting the above technical solution, when the server housing box is filled with cooling oil, since part of the server housing box extends out of the top of the water tank, the oil pressure at the same height is greater than the water pressure, making it difficult for water to enter the server housing box. When the cooling oil in the server housing box leaks, the liquid level drops. When the liquid level is lower than the threshold, the liquid level sensor sends a signal to the controller, and the controller controls the alarm indicator to sound an alarm.

[0009] Optionally, the alarm indicator includes at least one of a buzzer and an alarm light.

[0010] By adopting the above technical solution, the buzzer is generally used as the preferred solution, because the alarm light needs human observation to be discovered, and the buzzer reminder is more eye-catching. Of course, the buzzer and the alarm light can also be used in combination, and the information can even be sent to the back-end management platform.

[0011] Optionally, a heat conducting plate is provided at the bottom of the server containing box, and an arrangement direction of the heat conducting plate is parallel to a water flow direction.

[0012] By adopting the above technical solution, a part of the heat is transferred to the water through the heat conducting plate, and because the heat conducting plate is parallel to the water flow direction, it is not easy to interfere with the water flow.

[0013] Optionally, the server housing box is connected to a fluid replenishment system, which includes a fluid replenishment tank, a fluid replenishment pump and a fluid replenishment tube. One end of the fluid replenishment pump is connected to the fluid replenishment tank, and the other end is connected to the fluid replenishment tube. The fluid replenishment tube is connected to the fluid replenishment tank.

[0014] By adopting the above technical solution, the main function of the liquid replenishing system is to replenish the cooling oil in the server housing box to ensure the oil pressure in the server housing box, so that the cooling oil will only flow into the water and the water will not enter the cooling oil.

[0015] Optionally, the rehydration tube extends into the bottom of the server housing box, and the rehydration pump can realize forward and reverse rotation through a controller.

[0016] By adopting the above technical solution, the liquid replenishing pump can also be used as a liquid extraction pump, and liquid extraction and liquid replenishment can be achieved by controlling the forward and reverse rotation of the motor.

[0017] Optionally, an opening is provided at the top of the water tank, and the server accommodating box is inserted from the opening. The server accommodating box has a limiting portion abutting against the top of the water tank.

[0018] By adopting the above technical solution, the server housing box can be quickly installed, and the limiting part can be further fixed by bolts or the like, or can be fixed by relying on the deadweight of the server housing box.

[0019] Optionally, a heat-conducting guide rod is fixed on the server housing box, and the heat-conducting guide rod vertically passes through the top of the water tank and extends into the water tank. A floating member is fixed on the server housing box, and the floating member has a housing cavity with an opening facing upward. A drainage hole is provided at the bottom of the floating member, and an opening and closing member is arranged in the drainage hole, and the opening and closing member opens the drainage hole when the water pressure is lower than a predetermined value.

[0020] By adopting the above technical solution, due to the existence of the floating part, when the water level in the water tank is high, the buoyancy is less than the water pressure and the deadweight of the server housing box, so the limit part abuts against the top of the water tank. When the water level in the water tank drops to a certain level, the water pressure decreases, so the buoyancy is greater than the water pressure and the deadweight of the server housing box. At this time, the server housing box moves up, and the water level drops, accelerating the separation of the water in the water tank and the server housing box. When the separation occurs, there is no need to worry about water flowing into the server housing box. As the water level drops, the drain hole at the bottom of the floating part opens, so that the water in the floating part is drained, ensuring that the water in the floating part housing cavity will not flow into the server housing box.

[0021] Optionally, a liquid-cooled server cabinet with a leakage alarm is provided, characterized in that: it includes a water tank, a server containing box immersed in the water tank, a portion of the server containing box extends out of the top of the water tank and the server containing box is filled with cooling oil so that the server is immersed in the cooling oil; the water tank has a water inlet pipe and a water outlet pipe; the liquid-cooled server cabinet also includes a leakage alarm system, the leakage alarm system includes an oily substance detector, a controller, and an alarm prompter, the oily substance detector is located on the water outlet pipe, when oily substance is detected in the water outlet pipe, the oily substance detector transmits a signal to the controller, and the controller controls the alarm prompter to alarm.

[0022] By adopting the above technical solution, this method adopts external detection. Since the water and oil are mixed after the cooling oil flows into the water, the oily substance detector can detect the oily substance.

[0023] Preferably, a control method for a liquid-cooled server cabinet with a leakage alarm is characterized by comprising the following steps: Step 1), when cooling oil leakage is detected and the server needs to be temporarily cooled, the flow rate of water in and out of the water tank is controlled so that the liquid level of the water in the water tank drops to close to the lower surface of the bottom of the server containing box; Step 2), when the liquid level drops to near the lower surface of the bottom of the server container, the water flow rate is controlled to maintain the liquid level; Step 3) The cooling oil in the server container is pumped into the replenishment tank through the replenishment pump; In step 1), the liquid level in the water tank is controlled to drop while the liquid replenishing system is started, and the liquid replenishing pump replenishes cooling oil into the server containing box so that the water in the water tank will not enter the server containing box.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. This solution has a leakage detection and reminder function, which can remind you when the cooling oil leaks; 2. Ensure that water does not enter the server container when cooling oil leaks; 3. By lowering the water level in the water tank, the server housing box can be cooled for a short period of time without water entering the server housing box, and short-term operation can be achieved, and the cooling oil is pumped into the replenishment tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the overall structure of Example 2 of the present application; Figure 3 It is a schematic diagram of the overall structure of Example 3 of the present application; Figure 4 It is a partial structural diagram of Example 4 of the present application; Figure 5 It is a schematic diagram of the overall structure of Example 5 of the present application.

[0026] Figure numerals: 1. water tank; 2. server housing box; 3. water inlet pipe; 4. water outlet pipe; 5. limit part; 6. liquid level sensor; 7. liquid replenishing tank; 8. liquid replenishing pump; 9. liquid replenishing pipe; 10. heat conduction plate; 11. heat conduction guide rod; 12. floating part; 13. housing chamber; 14. drain hole; 15. closing cover; 16. elastic plate; 17. oily substance detector; 18. controller; 19. alarm; 20. water level sensor. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-5 This application is described in further detail.

[0028] Embodiment 1: A liquid-cooled server cabinet with a leakage alarm comprises a water tank 1, a server containing box 2 immersed in the water tank 1, a portion of the server containing box 2 extends out of the top of the water tank 1 and the server containing box 2 is filled with cooling oil so that the server is immersed in the cooling oil; the water tank 1 is a rectangular parallelepiped structure, the water tank 1 has a water inlet pipe 3 and a water outlet pipe 4, the water inlet pipe 3 and the water outlet pipe 4 are located on two opposite surfaces, and the height of the water inlet pipe 3 is higher than the height of the water outlet pipe 4, and generally the water inlet pipe 3 and the water outlet pipe 4 are provided with solenoid valves to control the inflow and outflow of water.

[0029] The water tank 1 has an opening at the top, and the server housing box 2 is inserted from the opening. The server housing box 2 has a limiter 5 that abuts against the top of the water tank 1. The limiter 5 is generally a limiter plate, and the limiter 5 can be re-fixed by bolts. A water level sensor 20 is also provided in the water tank 1 to control the water level in the water tank.

[0030] The liquid-cooled server cabinet also includes a leakage alarm system, which includes a liquid level sensor 6, a controller 18, and an alarm indicator 19. The liquid level sensor 6 is located in the server housing box 2. When the liquid level is lower than the threshold, the liquid level sensor 6 transmits a signal to the controller 18, and the controller 18 controls the alarm indicator 19 to alarm. The alarm indicator 19 includes at least one of a buzzer and an alarm light. The controller 18 and the alarm indicator 19 are both located on the outer wall of the water tank 1. In this embodiment, a buzzer is preferred, and the alarm information can be sent to the back-end platform synchronously.

[0031] In order to ensure that the water in the water tank 1 does not enter the server housing box 2, the server housing box 2 is connected to a liquid replenishment system, which includes a liquid replenishment tank 7, a liquid replenishment pump 8 and a liquid replenishment tube 9. One end of the liquid replenishment pump 8 is connected to the liquid replenishment tank 7, and the other end is connected to the liquid replenishment tube 9. The liquid replenishment tube 9 is connected to the liquid replenishment tank 7. Preferably, the liquid replenishment tube 9 extends into the bottom of the server housing box 2, and the liquid replenishment pump 8 realizes forward and reverse rotation through the controller 18.

[0032] A control method for a liquid-cooled server cabinet with a leakage alarm comprises the following steps: Step 1), when cooling oil leakage is detected and the server needs to be cooled temporarily, the flow rate of water in and out of a water tank 1 is controlled so that the liquid level of the water in the water tank 1 drops to a level close to the bottom lower surface of a server containing box 2; this control can be to stop the water inlet pipe 3 from inletting water and the water outlet pipe 4 from outleting water, and when the liquid level drops to a predetermined height (the water surface fits the bottom lower surface of the server containing box 2), the water inlet pipe 3 is opened, and the water inlet and outlet are kept balanced.

[0033] Step 2), when the liquid level drops to near the bottom surface of the server container 2, the water flow rate is controlled to maintain the liquid level; In step 3), the cooling oil in the server housing box 2 is pumped into the liquid replenishment tank 7 through the liquid replenishment pump 8.

[0034] In step 1), the liquid level of the water tank 1 is controlled to drop while the liquid replenishing system is started, and the liquid replenishing pump 8 replenishes cooling oil into the server containing box 2 so that the water in the water tank 1 will not enter the server containing box 2.

[0035] Embodiment 2: A liquid-cooled server cabinet with a leakage alarm comprises a water tank 1, a server containing box 2 immersed in the water tank 1, a portion of the server containing box 2 extends out of the top of the water tank 1 and the server containing box 2 is filled with cooling oil so that the server is immersed in the cooling oil; the water tank 1 is a rectangular parallelepiped structure, the water tank 1 has a water inlet pipe 3 and a water outlet pipe 4, the water inlet pipe 3 and the water outlet pipe 4 are located on two opposite surfaces, and the height of the water inlet pipe 3 is higher than the height of the water outlet pipe 4, and generally the water inlet pipe 3 and the water outlet pipe 4 are provided with solenoid valves to control the inflow and outflow of water.

[0036] The top of the water tank 1 is provided with an opening, and the server housing box 2 is inserted from the opening. The server housing box 2 has a limiting portion 5 abutting against the top of the water tank 1. The limiting portion 5 can be re-fixed by bolts.

[0037] The liquid-cooled server cabinet also includes a leakage alarm system, which includes a liquid level sensor 6, a controller 18, and an alarm indicator 19. The liquid level sensor 6 is located in the server housing box 2. When the liquid level is lower than the threshold, the liquid level sensor 6 transmits a signal to the controller 18, and the controller 18 controls the alarm indicator 19 to alarm. The alarm indicator 19 includes at least one of a buzzer and an alarm light. The controller 18 and the alarm indicator 19 are both located on the outer wall of the water tank 1. In this embodiment, a buzzer is preferred, and the alarm information can be sent to the back-end platform synchronously.

[0038] In order to ensure that the water in the water tank 1 does not enter the server housing box 2, the server housing box 2 is connected to a liquid replenishment system, which includes a liquid replenishment tank 7, a liquid replenishment pump 8 and a liquid replenishment tube 9. One end of the liquid replenishment pump 8 is connected to the liquid replenishment tank 7, and the other end is connected to the liquid replenishment tube 9. The liquid replenishment tube 9 is connected to the liquid replenishment tank 7. The liquid replenishment tube 9 extends into the bottom of the server housing box 2, and the liquid replenishment pump 8 realizes forward and reverse rotation through the controller 18.

[0039] A heat conducting plate 10 is provided at the bottom of the server housing box 2 , and the arrangement direction of the heat conducting plate 10 is parallel to the water flow direction, so as to enhance the cooling effect on the server housing box 2 in case of leakage, so as to maintain the short-term operation of the server in case of leakage.

[0040] Embodiment 3: A liquid-cooled server cabinet with a leakage alarm comprises a water tank 1, a server containing box 2 immersed in the water tank 1, a portion of the server containing box 2 extends out of the top of the water tank 1 and the server containing box 2 is filled with cooling oil so that the server is immersed in the cooling oil; the water tank 1 is a rectangular parallelepiped structure, the water tank 1 has a water inlet pipe 3 and a water outlet pipe 4, the water inlet pipe 3 and the water outlet pipe 4 are located on two opposite surfaces, and the height of the water inlet pipe 3 is higher than the height of the water outlet pipe 4, and generally the water inlet pipe 3 and the water outlet pipe 4 are provided with solenoid valves to control the inflow and outflow of water.

[0041] The water tank 1 has an opening at the top, and the server housing box 2 is inserted from the opening. The server housing box 2 has a limiter 5 that abuts against the top of the water tank 1. At this time, the limiter 5 only maintains abutment. A heat-conducting guide rod 11 is fixed to the server housing box 2, and the heat-conducting guide rod 11 vertically passes through the top of the water tank 1 and extends into the water tank 1. The server housing box 2 is fixed with a floating member 12, and the floating member 12 has a housing cavity 13 with an opening facing upward. The heat-conducting guide rod 11 mainly acts as a heat-conducting rod to transfer heat to water when there is no leakage, and mainly acts as a guide for the floating of the server housing box 2 when there is a leakage.

[0042] The liquid-cooled server cabinet also includes a leakage alarm system, which includes a liquid level sensor 6, a controller 18, and an alarm indicator 19. The liquid level sensor 6 is located in the server housing box 2. When the liquid level is lower than the threshold, the liquid level sensor 6 transmits a signal to the controller 18, and the controller 18 controls the alarm indicator 19 to alarm. The alarm indicator 19 includes at least one of a buzzer and an alarm light. The controller 18 and the alarm indicator 19 are both located on the outer wall of the water tank 1. In this embodiment, a buzzer is preferred, and the alarm information can be sent to the back-end platform synchronously.

[0043] In order to ensure that the water in the water tank 1 does not enter the server housing box 2, the server housing box 2 is connected to a liquid replenishment system, which includes a liquid replenishment tank 7, a liquid replenishment pump 8 and a liquid replenishment tube 9. One end of the liquid replenishment pump 8 is connected to the liquid replenishment tank 7, and the other end is connected to the liquid replenishment tube 9. The liquid replenishment tube 9 is connected to the liquid replenishment tank 7. The liquid replenishment tube 9 extends into the bottom of the server housing box 2, and the liquid replenishment pump 8 realizes forward and reverse rotation through the controller 18.

[0044] The server box 2 will eventually move down after floating up. The floating up is only to accelerate the separation of the server box 2 from the water. Finally, the limiting part 5 on the server box 2 abuts against the top of the water tank 1, and the water level will also be maintained at the bottom of the server box 2.

[0045] Embodiment 4 is a liquid cooling server cabinet with a leakage alarm, which is different from Embodiment 3 in that: the bottom of the floating member 12 has a drain hole 14, and an opening and closing member is arranged in the drain hole 14, and the opening and closing member opens the drain hole 14 after the water pressure is lower than a predetermined value. The opening and closing member includes a closing cover 15 and an elastic plate 16, one end of the elastic plate 16 is fixed to the server housing box 2, and the other end is fixed to the closing cover 15. When the water pressure is high, the closing cover 15 covers the drain hole 14, and when the water pressure is low, the elastic plate 16 resets to drive the closing cover 15 to open the drain hole 14.

[0046] Example 5, replacing the leakage alarm system in Examples 1-4 with the following new leakage alarm system: the leakage alarm system includes an oily substance detector 17, a controller 18, and an alarm indicator 19, wherein the oily substance detector 17 is located on the water outlet pipe 4, and when oily substance is detected in the water outlet pipe 4, the oily substance detector 17 transmits a signal to the controller 18, and the controller 18 controls the alarm indicator 19 to sound an alarm, and the oily substance detector 17 is generally a UV-visible spectrophotometer.

[0047] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A liquid-cooled server cabinet with a leakage alarm, characterized in that: The liquid-cooled server cabinet includes a water tank and a server containing box immersed in the water tank, wherein a portion of the server containing box extends out of the top of the water tank and the server containing box is filled with cooling oil so that the server is immersed in the cooling oil; the water tank has a water inlet pipe and a water outlet pipe; the liquid-cooled server cabinet also includes a leakage alarm system, which includes a liquid level sensor, a controller, and an alarm indicator. The liquid level sensor is located in the server containing box, and when the liquid level is lower than a threshold value, the liquid level sensor transmits a signal to the controller, and the controller controls the alarm indicator to sound an alarm.

2. A liquid-cooled server cabinet with a leakage alarm according to claim 1, characterized in that: The alarm prompter includes at least one of a buzzer and an alarm light.

3. The liquid cooling server cabinet with leakage alarm according to claim 1, characterized in that: The bottom of the server housing box is provided with a heat conducting plate, and the arrangement direction of the heat conducting plate is parallel to the water flow direction.

4. A liquid-cooled server cabinet with a leakage alarm according to claim 1 or 3, characterized in that: The server housing box is connected to a fluid replenishment system, which includes a fluid replenishment box, a fluid replenishment pump and a fluid replenishment tube. One end of the fluid replenishment pump is connected to the fluid replenishment box, and the other end is connected to the fluid replenishment tube. The fluid replenishment tube is connected to the fluid replenishment box.

5. The liquid cooling server cabinet with leakage alarm according to claim 4, characterized in that: The liquid replenishment pipe extends into the bottom of the server housing box, and the liquid replenishment pump realizes forward and reverse rotation through a controller.

6. The liquid cooling server cabinet with a leakage alarm according to claim 4, characterized in that: The top of the water tank is provided with an opening, the server accommodating box is inserted from the opening, and the server accommodating box has a limiting portion abutting against the top of the water tank.

7. The liquid cooling server cabinet with leakage alarm according to claim 6, characterized in that: A heat-conducting guide rod is fixed on the server accommodation box, and the heat-conducting guide rod vertically passes through the top of the water tank and extends into the water tank. A floating member is fixed on the server accommodation box, and the floating member has an accommodation cavity with an opening facing upward.

8. The liquid cooling server cabinet with leakage alarm according to claim 7, characterized in that: The bottom of the floating member is provided with a drain hole, and an opening and closing member is arranged in the drain hole. The opening and closing member opens the drain hole after the water pressure is lower than a predetermined value.

9. A liquid-cooled server cabinet with a leakage alarm, characterized in that: It includes a water tank and a server containing box immersed in the water tank, wherein a portion of the server containing box extends out from the top of the water tank and the server containing box is filled with cooling oil so that the server is immersed in the cooling oil; the water tank has a water inlet pipe and a water outlet pipe; the liquid-cooled server cabinet also includes a leakage alarm system, which includes an oily substance detector, a controller, and an alarm prompter. The oily substance detector is located on the water outlet pipe. When oily substance is detected in the water outlet pipe, the oily substance detector transmits a signal to the controller, and the controller controls the alarm prompter to sound an alarm.

10. A control method for a liquid-cooled server cabinet with a leakage alarm, characterized in that: The method comprises the following steps: Step 1), when cooling oil leakage is detected and the server needs to be cooled temporarily, the flow rate of water in and out of the water tank is controlled so that the liquid level of the water in the water tank drops to a level close to the lower surface of the bottom of the server storage box; Step 2), when the liquid level drops to near the lower surface of the bottom of the server container, the water flow rate is controlled to maintain the liquid level; Step 3) The cooling oil in the server container is pumped into the replenishment tank through the replenishment pump; In step 1), the liquid level in the water tank is controlled to drop while the liquid replenishing system is started, and the liquid replenishing pump replenishes cooling oil into the server containing box so that the water in the water tank will not enter the server containing box.

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