Leakage liquid and fire-fighting wastewater automatic shunting method

Abstract

The invention provides an automatic leakage liquid and fire-fighting wastewater diversion method which comprises the following steps: liquid is introduced into the lower part of a diversion waste liquid pool, and a waste liquid upper alarm liquid level is arranged in the diversion waste liquid pool; monitoring the liquid level in the shunting waste liquid pool through a liquid level sensor, and judging the current working condition according to the liquid level; wherein when the liquid level does not reach the waste liquid upper alarm liquid level, the working condition is judged to be a leaked liquid collection working condition; when the liquid level reaches or exceeds the waste liquid upper alarm liquid level, the fire-fighting waste water discharge working condition is judged; executing a corresponding operation process according to the discriminated working condition; if the working condition is leakage liquid collection, the leakage liquid is recycled through a closed pollution discharge connector at the bottom of the flow-dividing waste liquid pool; and if the working condition is fire-fighting wastewater discharge, overflowing to an outdoor water seal well through a high-position diversion horn mouth, automatically distinguishing the working conditions according to the total amount and characteristics of the liquid, and executing corresponding operation.

Description

Technical Field

[0001] This invention relates to the field of diversion technology, and in particular to an automatic diversion method for leaked liquid and fire-fighting wastewater. Background Technology

[0002] With the rapid development of high-density computing and artificial intelligence technologies, liquid cooling technology has become the mainstream solution for data center heat dissipation. The cooling media used (such as ethylene glycol aqueous solutions and fluorinated liquids) are often toxic or environmentally hazardous; leaks must be strictly collected in sealed containers and discharged externally. At the same time, data center server rooms, as key fire prevention areas, must be equipped with automatic sprinkler systems and require unobstructed drainage to prevent flooding. This creates a fundamental contradiction between environmental protection requirements and fire drainage requirements.

[0003] Current technologies generally employ electrically controlled valve switching schemes to address this contradiction. This scheme typically includes a large leak collection tank, with its inlet connected to the machine room drainage network and its outlet isolated from the municipal drainage system via an electrically operated valve (such as an electrically operated butterfly valve or ball valve). Under normal conditions, the valve is closed, and the leaked liquid is temporarily stored in the collection tank. When the fire alarm system is triggered, the control system sends an opening signal to the electrically operated valve, causing it to open and thus providing a discharge channel for fire-fighting wastewater.

[0004] However, it is difficult to determine whether the collection tank is collecting leaked liquid or fire-fighting wastewater. If the valve is accidentally opened, toxic leaked liquid will be directly discharged into the municipal pipe network, causing a serious environmental accident. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic separation method for leaked liquid and fire-fighting wastewater, which automatically distinguishes operating conditions and performs corresponding operations based on the total amount and characteristics of the liquid.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic separation method for leaked liquid and fire-fighting wastewater includes the following steps: S100. The liquid is introduced into the lower part of the diversion waste liquid tank, and the diversion waste liquid tank is equipped with an alarm liquid level for waste liquid. S200. Monitor the liquid level in the diversion waste liquid tank through a liquid level sensor, and determine the current working condition based on the liquid level; When the liquid level does not reach the alarm level on the waste liquid, it is determined to be a leakage liquid collection condition; When the liquid level reaches or exceeds the alarm level of the waste liquid, it is determined to be a fire-fighting wastewater discharge condition. S300: Based on the identified working conditions, execute the corresponding operation procedures; In the case of leaked liquid collection, it is recovered through the sealed drain port at the bottom of the diversion waste liquid tank.

[0007] In a preferred embodiment, the waste liquid diversion tank is equipped with a lower alarm level for waste liquid, which is located below the upper alarm level for waste liquid. Under leakage collection conditions, the method further includes the following steps: When the liquid level rises to the alarm level below the waste liquid level, a first-level warning signal is issued; When the liquid level continues to rise and reaches the above-mentioned alarm level, a second-level alarm signal is issued.

[0008] In a preferred embodiment, the diversion wastewater tank is provided with an overflow pipe inlet, which is located above the alarm level of the wastewater. In step S300, if it is a fire-fighting wastewater discharge condition, then the following is executed: When the liquid level exceeds the inlet end of the overflow pipe, the liquid exceeding the inlet end of the overflow pipe is discharged through the inlet end of the overflow pipe.

[0009] In a preferred embodiment, the diversion waste liquid tank is further equipped with a fire-fighting wastewater alarm level, which is located between the upper alarm level of the waste liquid and the inlet end of the overflow pipe. Under the fire-fighting wastewater discharge condition, the method further includes the following steps: When the liquid level rises to the alarm level for fire-fighting wastewater, a third warning signal is issued.

[0010] In a preferred embodiment, the waste liquid diversion tank is provided with an inlet pipe. The upper end of the inlet pipe is connected to the liquid inlet interface at the top of the waste liquid diversion tank, and the lower end of the inlet pipe extends to the lower part of the waste liquid diversion tank. Step S100 includes the following steps. Liquid from the data center enters through the inlet port and flows along the inlet pipe to the lower part of the diversion waste liquid tank; The height of the lower end of the inlet pipe is lower than the height of the waste liquid alarm level.

[0011] In a preferred embodiment, under the condition of leaked liquid collection, the method further includes the following steps: The liquid is discharged by the gas being replaced by the exhaust port and exhaust riser located at the top of the diversion waste liquid tank.

[0012] Compared with existing technologies, this technical solution has the following advantages: By using liquid level change patterns (such as whether the critical liquid level is reached within a preset time window), it can automatically and accurately determine whether the current situation is a small leak collection or a large amount of fire-fighting wastewater discharge, and perform corresponding operations.

[0013] The system clearly delineates the waste liquid buffer zone, waste liquid storage zone, and overflow discharge zone using alarm levels for lower waste liquid level, upper waste liquid level, and fire wastewater level. The multi-level alarm system provides a clear event classification and response mechanism (such as early warning, alarm, and emergency overflow warning), helping maintenance personnel accurately grasp the situation and take appropriate measures. The bottom drain outlet and top inspection port also facilitate professional recycling and routine maintenance.

[0014] An overflow pipe with a short flared inlet is installed, with its inlet located above the fire wastewater alarm level. In extreme cases (such as complete control system failure or fire water volume far exceeding expectations), it can automatically activate to ensure that excess liquid does not overflow from the tank but is safely discharged to the external pipe network. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the automatic diversion and collection device described in this invention; Figure 2 This is a schematic diagram of the automatic separation system for leaked liquid and fire-fighting wastewater described in this invention.

[0016] In the diagram: 1 Waste liquid funnel, 2 Floor drain, 3 Drainage delivery pipe, 4 Diversion waste liquid tank, 5 Inlet interface, 6 Inlet pipe, 7 Energy dissipation head, 8 Overflow pipe, 9 Exhaust interface, 10 Exhaust riser, 11 Non-powered wind cap, 12 Overflow interface, 13 Water seal well, 14 Drainage inspection well, 15 Sewage discharge interface, 16 Waste liquid buffer zone, 17 Waste liquid storage area, 18 Overflow discharge area, 19 Sealed maintenance port, 20 Liquid level sensor, 21 Waste liquid lower alarm level, 22 Waste liquid upper alarm level, 23 Fire wastewater alarm level, 24 Drain valve. Detailed Implementation

[0017] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0018] Please refer to Figure 1 An embodiment of the present invention provides an automatic diversion and collection device, comprising: Diversion waste liquid tank 4, wherein the diversion waste liquid tank 4 is equipped with a waste liquid alarm level 22; Liquid inlet 5, wherein the liquid inlet 5 is disposed at the top of the diversion waste liquid tank 4; The inlet pipe 6 has its upper end connected to the liquid inlet interface 5 and its lower end extending to the lower part of the diversion waste liquid tank 4. Overflow pipe 8, the inlet end of the overflow pipe 8 is located in the diversion waste liquid tank 4 and has an upward-opening funnel-shaped structure. The inlet end of the overflow pipe 8 is located above the alarm liquid level 22 of the waste liquid. The outlet end of the overflow pipe 8 is used to connect to the external drainage network.

[0019] The diversion wastewater tank 4 is used to collect liquids from the data center, including leaked liquids and fire-fighting wastewater. Based on the different total volumes of leaked liquid and fire-fighting wastewater, an alarm level 22 is set in the diversion wastewater tank 4. When the liquid level in the diversion wastewater tank 4 does not reach the alarm level 22, the liquid is considered a leak. In this case, the highest liquid level formed by the accumulated liquid in the diversion wastewater tank 4 is always lower than the alarm level 22, and much lower than the inlet of the overflow pipe 8. The liquid is safely and statically trapped in the sealed diversion wastewater tank 4, awaiting professional recycling. When the liquid level reaches or exceeds the alarm level 22, the liquid is considered fire-fighting wastewater. If the fire-fighting wastewater continues to rise and exceeds the inlet of the overflow pipe 8, the excess fire-fighting wastewater is directly discharged through the overflow pipe 8, preventing the liquid from exceeding the total capacity of the diversion wastewater tank 4.

[0020] The leaked fluid originates from a closed liquid-cooled circulation piping system, and its total volume is typically defined as the total charge of cooling medium within a single branch or cooling module. For example, the cold plate circulation loop of a server rack might only be filled with 50 liters of ethylene glycol solution. Firefighting wastewater, on the other hand, comes from the building's automatic sprinkler system, which has high spray requirements; therefore, the total volume of firefighting wastewater is significantly greater than the total volume of the leaked fluid. Accordingly, this embodiment designs an alarm level 22 for the waste fluid, meaning the volume corresponding to the alarm level 22 is greater than the total charge of cooling medium.

[0021] like Figure 1 As shown, the diversion waste liquid tank 4 is a closed container that constitutes the main storage body for leaked liquid and the liquid judgment execution space, that is, to determine whether the liquid level in the diversion waste liquid tank 4 exceeds the alarm liquid level 22 on the waste liquid.

[0022] like Figure 1 As shown, the inlet pipe 6 is arranged vertically, with its upper end connected to the liquid inlet interface 5. The lower end of the inlet pipe 6 extends to the lower part of the waste liquid diversion tank 4, meaning the lower end of the inlet pipe 6 is quite close to the bottom of the waste liquid diversion tank 4, to prevent leakage liquid from causing large splashes and aerosol generation. It can be seen that the height of the lower end of the inlet pipe 6 is significantly lower than the height of the upper alarm liquid level 22 of the waste liquid.

[0023] refer to Figure 1 and Figure 2 The automatic diversion and collection device further includes: The exhaust port 9 is located at the top of the diversion waste liquid tank 4 and is used to connect the exhaust riser 10.

[0024] When the liquid enters the diversion waste liquid tank 4, the gas displaced in the diversion waste liquid tank 4 is discharged through the exhaust port 9 and the exhaust riser 10 connected thereto.

[0025] like Figure 1 As shown, a level sensor 20 is installed at the alarm level 22 of the waste liquid. When the liquid level in the diversion waste liquid tank 4 exceeds the alarm level 22, the level sensor at the alarm level 22 is triggered and a second-level warning signal is issued to inform maintenance personnel that the waste liquid tank 4 contains fire-fighting wastewater. An external discharge pipe with an electrically controlled valve can be installed at the bottom or side wall of the diversion waste liquid tank 4. The electrically controlled valve can then be activated to discharge the fire-fighting wastewater.

[0026] like Figure 1 As shown, the waste liquid diversion tank 4 is equipped with a waste liquid lower alarm level 21, which is located below the waste liquid upper alarm level 22, and the lower end of the inlet pipe 6 is located below the waste liquid lower alarm level 21.

[0027] The waste liquid alarm level 21 is also equipped with a liquid level sensor. When the liquid level sensor is triggered, it indicates that the liquid in the diversion waste liquid tank 4 exceeds the waste liquid alarm level 21, and a first-level warning signal can be issued to inform the maintenance personnel that liquid has entered the diversion waste liquid tank 4.

[0028] If the level sensor at the waste liquid alarm level 21 is continuously triggered, while the level sensor at the waste liquid alarm level 22 is not triggered within a sufficiently long observation window (e.g., tens of minutes to several hours), then the liquid entering the diversion waste liquid tank 4 is determined to be leaking liquid. Conversely, if the level sensor at the waste liquid alarm level 22 is triggered, then the liquid entering the diversion waste liquid tank 4 is directly determined to be fire-fighting wastewater.

[0029] like Figure 1 As shown, the diversion waste liquid tank 4 is also equipped with a fire wastewater alarm level 23, which is located between the waste liquid alarm level 22 and the inlet end of the overflow pipe 8.

[0030] The fire wastewater alarm level 23 is also equipped with a level sensor. When the level sensor at the fire wastewater alarm level 23 is triggered, a third warning signal is issued to inform the maintenance personnel that the liquid in the diversion wastewater tank 4 is about to exceed the maximum capacity that the diversion wastewater tank 4 can store.

[0031] like Figure 1 As shown, the waste liquid diversion tank 4 is divided into a waste liquid buffer zone 16, a waste liquid storage zone 17, and an overflow discharge zone 18 from bottom to top. The waste liquid buffer zone 16 is located between the bottom surface of the waste liquid diversion tank 4 and the lower alarm level 21. The waste liquid storage zone 17 is located between the lower alarm level 21 and the upper alarm level 22. The overflow discharge zone 18 is located between the upper alarm level 22 and the fire wastewater alarm level 23.

[0032] refer to Figure 1 The volumes of the waste liquid storage area 17, the overflow discharge area 18, and the waste liquid buffer zone 16 gradually decrease, meaning that the distance between the lower alarm level 21 and the upper alarm level 22 of the waste liquid is at its maximum.

[0033] like Figure 1 As shown, the inlet end of the overflow pipe 8 is located inside the diversion waste liquid tank 4, and the outlet end of the overflow pipe 8 is located outside the diversion waste liquid tank 4, which is used to connect to the external drainage network. In this way, when the liquid in the diversion waste liquid tank 4 exceeds the height of the inlet end of the overflow pipe 8, the excess liquid is discharged through the overflow pipe 8.

[0034] refer to Figure 1 The overflow pipe 8 has an overflow port 12 at its outlet end, which is connected to a water seal well 13 via a pipe. The water seal well 13 is a standard structure designed according to building water supply and drainage codes, and contains a standby water seal of a preset height. The water seal well 13 is ultimately connected to a drainage inspection well 14 around the building via a pipe, thereby safely guiding fire-fighting wastewater into the municipal rainwater or sewage network.

[0035] like Figure 1 As shown, the diversion waste liquid tank 4 is raised to a certain height relative to the installation ground through a foundation pad or support. A drain port 15 is provided at the bottom of the diversion waste liquid tank 4, which is used by professionals to connect specialized vacuum suction trucks, mobile recovery pumps, and other professional recovery equipment to pump and recover the leaked liquid after collection.

[0036] Furthermore, a drain valve 24 is provided on the pipe connecting the sewage outlet 15 to the bottom of the diversion waste liquid tank 4. The pipe is opened and closed by controlling the drain valve 24.

[0037] like Figure 1 As shown, the top of the diversion waste liquid tank 4 is provided with an inspection port 19. After the leakage liquid recovery operation is completed, or during regular preventive maintenance, the operation and maintenance personnel can open the inspection port 19 to conduct visual inspection and cleaning of the interior of the diversion waste liquid tank 4.

[0038] like Figure 1 and Figure 2As shown, the second embodiment of the present invention provides an automatic diversion system for leaked liquid and fire-fighting wastewater, including the automatic diversion and collection device of the first embodiment, and further including: A source capture unit for collecting leaked liquid or fire-fighting wastewater; The drainage conveying pipe 3 has its input end connected to the source capture unit and its output end connected to the liquid inlet 5 of the automatic diversion and collection device.

[0039] The automatic separation system for leaked liquid and fire-fighting wastewater can serve multiple independent data center rooms and adjacent air-conditioned areas within a data center building. Source capture units are distributed throughout each data center and air-conditioned area. The drainage pipe 3 ultimately converges into a dedicated waste liquid room located on the ground floor of the building, where the automatic separation and collection device is installed.

[0040] like Figure 1 The source capture unit includes: Waste liquid funnel 1; Floor drain 2; The horizontal height of the waste liquid funnel 1 is higher than the horizontal height of the floor drain 2.

[0041] The data center floor is equipped with a floor drain 2 for collecting fire-fighting wastewater generated by fire sprinklers during a fire.

[0042] The air-conditioned area, which houses the coolant distribution unit (CDU) and circulating fluid replenishment tank, is a critical node for the storage, replenishment, and circulation of cooling media, and is a major risk area for leaks. Floor drains 2 are installed in the air-conditioned area to collect fire-fighting wastewater and leaked fluid.

[0043] In addition, the air-conditioned area is equipped with a waste liquid funnel 1. Since the waste liquid funnel 1 is relatively high, it can be placed directly below high-risk leakage points such as circulating liquid replenishment tanks and CDU pump valves to receive a large amount of sudden leakage that may occur at that point.

[0044] After the leak was dealt with, the diversion waste liquid pool was rinsed with clean water, and the residual liquid was actively discharged into a dedicated waste liquid collection container to further reduce environmental risks.

[0045] like Figure 1 As shown, the upper end of the exhaust riser 10 is located on the roof of the data center building, and a non-powered wind cap 11 is installed on it.

[0046] like Figure 2 As shown, the third embodiment provides a method for automatically separating leaked liquid from fire-fighting wastewater, including the following steps: S100. The liquid is introduced into the lower part of the diversion waste liquid tank 4, and the diversion waste liquid tank 4 is equipped with a waste liquid upper alarm level 22. S200. Monitor the liquid level in the diversion waste liquid tank 4 using a liquid level sensor, and determine the current operating condition based on the liquid level; When the liquid level does not reach the alarm level 22 on the waste liquid, it is determined to be a leakage liquid collection condition; When the liquid level reaches or exceeds the alarm level 22 on the waste liquid, it is determined to be a fire-fighting wastewater discharge condition. S300: Based on the identified working conditions, execute the corresponding operation procedures; If it is a leaked liquid collection operation, it is recovered through the sealed sewage outlet 15 at the bottom 4 of the diversion waste liquid pool; If it is fire-fighting wastewater discharge, it will overflow through the high-level diversion funnel to the outdoor water seal well.

[0047] This method abandons the traditional approach of relying on complex external linkages such as fire alarm signals, and instead determines the working condition based on the most direct physical state in the diversion waste liquid tank—the liquid level height.

[0048] like Figure 2 As shown, the waste liquid diversion tank 4 is provided with an inlet pipe 6 inside. The upper end of the inlet pipe 6 is connected to the liquid inlet interface 5 at the top of the waste liquid diversion tank 4, and the lower end of the inlet pipe 6 extends to the lower part of the waste liquid diversion tank 4. Step S100 includes the following steps. Liquid from the data center enters through the inlet port 5 and flows along the inlet pipe 6 to the lower part of the diversion waste liquid pool 4. That is, the distance from the lower end of the inlet pipe 6 to the bottom of the diversion waste liquid pool 4 is small, which prevents splashing, turbulence, foam and aerosols generated when the liquid falls freely and hits the liquid surface or the bottom of the pool. The height of the lower end of the inlet pipe 6 is lower than the height of the waste liquid alarm level 21.

[0049] To further optimize the flow pattern, a diffuser or energy dissipation head 7 (such as a bell mouth, perforated plate, etc.) can be added at the lower outlet of the inlet pipe 6 to make the outflowing liquid smoother and more dispersed, further reducing the disturbance to the liquid in the pool.

[0050] like Figure 2 As shown, under the condition of leaked liquid collection, the method further includes the following steps: The liquid is discharged by the gas replaced by the exhaust port 9 and exhaust riser 10 located at the top of the diversion waste liquid tank 4.

[0051] When the leaked liquid enters the diversion waste liquid tank 4 through the inlet pipe 6 in an immersed manner, the liquid occupies the space inside the tank and displaces an equal volume of gaseous medium. The displaced gas, driven by the slight positive pressure formed inside the tank, is directed to a safe area outside the building or a special waste gas treatment device through the dedicated exhaust port 9 set at the top of the diversion waste liquid tank 4 and the exhaust riser 10 sealed to it.

[0052] like Figure 2 As shown, the waste liquid diversion tank 4 is equipped with a waste liquid lower alarm level 21, which is located below the waste liquid upper alarm level 22. In the case of leaked liquid collection, the method further includes the following steps: When the liquid level rises to the alarm level 21 below the waste liquid level, a first-level warning signal is issued; When the liquid level continues to rise and reaches the above-mentioned alarm level 22, a second-level alarm signal is issued.

[0053] When the liquid level in the tank reaches or exceeds the waste liquid alarm level 21, it is determined that liquid has begun to continuously enter and accumulate. The system then triggers the first-level warning signal. The core function of this signal is to provide maintenance personnel with an early, low-level status indication that the system has detected liquid inflow, an initial leak may have occurred, and it is recommended to check and confirm, but it has not yet reached the level requiring emergency handling.

[0054] If liquid continues to enter (indicating that the leak has not stopped or the leak volume is large), causing the liquid level to rise further to or exceed the alarm level 22 on the waste liquid level, the system determines that the leak volume has approached or reached the design temporary storage capacity. At this time, the system immediately triggers a second-level alarm signal. This signal is a high-level operational alarm, its function being to clearly indicate that a leak event is occurring and requires immediate attention.

[0055] like Figure 2 As shown, the diversion waste liquid tank 4 is also equipped with a fire wastewater alarm level 23, which is located between the waste liquid alarm level 22 and the inlet end of the overflow pipe 8. Under the fire wastewater discharge condition, the method further includes the following steps: When the liquid level rises to the fire wastewater alarm level 23, a third warning signal is issued.

[0056] The third warning signal is the final electronic warning before the liquid level reaches the overflow pipe inlet. It issues a clear alarm with the highest priority to the data center operations and fire control center, confirming that the system has entered the final stage where fire water will automatically overflow.

[0057] At this time, step S300 includes: If the operation involves fire-fighting wastewater discharge, the fire-fighting wastewater in the diversion wastewater tank 4 will be discharged. For example, an external discharge pipe with an electrically controlled valve can be installed at the bottom or side wall of the diversion wastewater tank 4. This pipe can be opened in response to a third warning signal to discharge the fire-fighting wastewater in the diversion wastewater tank 4.

[0058] like Figure 2 As shown, if the fire-fighting wastewater is not discharged in a timely manner, the overflow pipe 8 can be added to assist in the discharge. Specifically, the diversion wastewater tank 4 is provided with an inlet end of the overflow pipe 8, which is located above the alarm liquid level 22 on the wastewater. In step S300, if it is a fire-fighting wastewater discharge condition, the following is executed: When the liquid level exceeds the inlet end of the overflow pipe 8, the liquid exceeding the inlet end of the overflow pipe 8 is discharged through the inlet end of the overflow pipe 8.

[0059] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A method for automatically separating leaked liquid from fire-fighting wastewater, characterized in that, Includes the following steps: S100. The liquid is introduced into the lower part of the diversion waste liquid tank (4), and the diversion waste liquid tank (4) is equipped with a waste liquid alarm level (22). S200. Monitor the liquid level in the diversion waste liquid tank (4) by using a liquid level sensor, and determine the current working condition based on the liquid level; When the liquid level does not reach the alarm level (22) of the waste liquid, it is determined to be a leakage liquid collection condition; When the liquid level reaches or exceeds the alarm level (22) of the waste liquid, it is determined to be a fire-fighting wastewater discharge condition; S300: Based on the identified working conditions, execute the corresponding operation procedures; If it is a leaked liquid collection condition, it is recovered through the sealed sewage outlet (15) at the bottom (4) of the diversion waste liquid pool.

2. The automatic diversion method for leaked liquid and fire-fighting wastewater as described in claim 1, characterized in that, The waste liquid diversion tank (4) is equipped with a waste liquid lower alarm level (21), which is located below the waste liquid upper alarm level (22). Under the condition of leaked liquid collection, the method further includes the following steps: When the liquid level rises to the alarm level (21) of the waste liquid, a first-level warning signal is issued; When the liquid level continues to rise and reaches the above-mentioned alarm level (22), a second-level alarm signal is issued.

3. The automatic separation method for leaked liquid and fire-fighting wastewater as described in claim 1, characterized in that, The diversion waste liquid tank (4) is provided with an inlet end of an overflow pipe (8), the inlet end of which is located above the alarm liquid level (22) of the waste liquid. In step S300, if it is a fire wastewater discharge condition, then the following is executed: When the liquid level exceeds the inlet end of the overflow pipe (8), the liquid exceeding the inlet end of the overflow pipe (8) is discharged through the inlet end of the overflow pipe (8).

4. The automatic separation method for leaked liquid and fire-fighting wastewater as described in claim 3, characterized in that, The diversion waste liquid tank (4) is also equipped with a fire wastewater alarm level (23), which is located between the waste liquid alarm level (22) and the inlet end of the overflow pipe (8). Under the fire wastewater discharge condition, the method further includes the following steps: When the liquid level rises to the fire wastewater alarm level (23), a third warning signal is issued.

5. The automatic diversion method for leaked liquid and fire-fighting wastewater as described in claim 2, characterized in that, The waste liquid diversion tank (4) is provided with an inlet pipe (6). The upper end of the inlet pipe (6) is connected to the liquid inlet interface (5) at the top of the waste liquid diversion tank (4). The lower end of the inlet pipe (6) extends to the lower part of the waste liquid diversion tank (4). The step S100 includes the following steps. Liquid from the data center enters through the inlet port (5) and flows along the inlet pipe (6) to the lower part of the diversion waste liquid tank (4); The height of the lower end of the inlet pipe (6) is lower than the height of the waste liquid alarm level (21).

6. The automatic diversion method for leaked liquid and fire-fighting wastewater as described in claim 1, characterized in that, In the case of leaked liquid collection, the method further includes the following steps: The liquid is discharged by the gas being replaced by the exhaust port (9) and exhaust riser (10) located at the top of the diversion waste liquid tank (4).

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