Secondary heat exchange device and method with emergency treatment function

Abstract

The invention relates to the technical field of secondary heat exchange structures of liquid cooling electronic equipment, and aims to solve the problems that an existing heat exchange device does not have emergency protection and cooling backup measures for leakage faults, a heat exchange system breaks down when leakage occurs, consequently, a cooling system cannot work, normal use of the electronic equipment is affected, and surrounding electronic equipment is burnt out. The invention provides a secondary heat exchange device and method with an emergency treatment function. The device comprises a main secondary heat exchanger and a backup secondary heat exchanger, wherein the main secondary heat exchanger and the backup secondary heat exchanger are simultaneously connected in series in a primary heat exchange system and a secondary heat exchange system; the method comprises the following steps: S1, judging a leaked pipeline according to alarm conditions of a leakage monitoring sensor and a flow sensor; s2, shutoff valves on the leaked pipelines are closed, corresponding emergency recovery branches are started, liquid is shunted to corresponding heat exchange loops through diverter valves, and uninterrupted cooling is achieved; the electronic equipment has an emergency processing function, and uninterrupted work of the electronic equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of secondary heat exchange structures of liquid-cooled electronic equipment, and in particular to a secondary heat exchange device and method with emergency processing function. Background Art

[0002] The secondary heat exchange device is a common device for cooling liquid-cooled electronic equipment. It can provide a stable cooling source when the electronic equipment is working, cool the electronic equipment and ensure the normal operation of the equipment. With the continuous development of miniaturization and integration of electronic equipment, the heat dissipation demand of electronic equipment is also rising sharply. For liquid-cooled electronic equipment, how to provide a stable and continuous liquid cooling source during its use, and have an emergency liquid supply function to ensure that the electronic equipment can continue to work at critical moments is a technical problem that the electronics industry needs to pay attention to and break through.

[0003] After searching the prior art, it was found that Chinese invention patent CN103287253 discloses a battery cooling system for liquid-liquid cooling hybrid vehicles. This technology solves the problem of overly complex heat dissipation coupling relationships among the inverter cooling system, motor cooling system, and auxiliary cooling system in the control system. At the same time, it provides a solution to the problem that the pressure bearing capacity of each cooling system pipeline is different, resulting in uneven distribution of system cooling capacity. The system effect is stable and the design is simple; Chinese invention patent CN104896777 discloses a chiller. The refrigeration cycle system can realize the cooling of the coolant in the evaporator by using the coolant circulation system and the refrigeration circulation system in a low-temperature environment, and improves the refrigeration effect. However, the prior art has no emergency protection and cooling backup measures for leakage failures. Once a leak occurs, the entire heat exchange system will be paralyzed, causing the cooling system to be unable to continue working, affecting the normal use of electronic equipment, especially for liquid-cooled electronic equipment with continuous working requirements. At the same time, when the device leaks, it will also cause surrounding electronic equipment to burn. Summary of the invention

[0004] The present invention aims to provide a secondary heat exchange device and method with emergency processing function to solve the problem that the existing heat exchange device has no emergency protection and cooling backup measures for leakage failure. When leakage occurs, the heat exchange system is paralyzed, affecting the normal use of electronic equipment and causing surrounding electronic equipment to burn out.

[0005] The present invention is achieved by adopting the following technical solutions:

[0006] The present invention provides a secondary heat exchange device with an emergency processing function, comprising a main secondary heat exchanger and a backup secondary heat exchanger, wherein the main secondary heat exchanger and the backup secondary heat exchanger are simultaneously connected in series in a primary heat exchange system and a secondary heat exchange system, and an electronic device to be cooled is connected in series in the secondary heat exchange system;

[0007] The primary heat exchange system further comprises a primary heat exchanger device, wherein the primary heat exchanger device, the primary secondary heat exchanger and the backup secondary heat exchanger are sequentially connected to form a loop;

[0008] The secondary heat exchange system further comprises a water tank and a circulating water pump, wherein the water tank, the circulating water pump, the electronic equipment to be cooled, the main secondary heat exchanger and the backup secondary heat exchanger are sequentially connected to form a loop;

[0009] The secondary coolant in the secondary heat exchange system is used to cool the electronic device to be cooled, and the primary coolant in the primary heat exchange system is used to cool the secondary coolant;

[0010] A shutoff valve and a flow sensor are installed on the connecting pipeline between the main secondary heat exchanger and the backup secondary heat exchanger, and a shutoff valve and a flow sensor are also installed on the connecting pipeline between the backup secondary heat exchanger and the primary heat exchanger device and the water tank;

[0011] The main secondary heat exchanger is connected to a first emergency recovery branch, which is connected to the primary heat exchange input end of the backup secondary heat exchanger and the secondary heat exchange input end of the backup secondary heat exchanger through a diverter valve 1; the backup secondary heat exchanger is connected to a second emergency recovery branch, which is connected to the input end of the primary heat exchanger device and the input end of the water tank through a diverter valve 2.

[0012] Among them, the diverter valve is used to divert the liquid to different actuators, such as: diverter valve 1 can control the first emergency recovery branch to be connected with the primary heat exchange input end of the backup secondary heat exchanger or its secondary heat exchange input end, and diverter valve 2 can control the second emergency recovery branch to be connected with the input end of the primary heat exchange system or the input end of the water tank.

[0013] As the preferred technical solution:

[0014] The output end of the primary heat exchanger device is connected to the primary heat exchange input end of the main secondary heat exchanger, the primary heat exchange output end of the main secondary heat exchanger is connected to the primary heat exchange input end of the backup secondary heat exchanger, and the primary heat exchange output end of the backup secondary heat exchanger is connected to the input end of the primary heat exchanger device;

[0015] The output end of the water tank is connected to the input end of the circulating water pump, the output end of the circulating water pump is connected to the input end of the electronic equipment to be cooled, the output end of the electronic equipment to be cooled is connected to the secondary heat exchange input end of the main secondary heat exchanger, the secondary heat exchange output end of the main secondary heat exchanger is connected to the secondary heat exchange input end of the backup secondary heat exchanger, and the secondary heat exchange output end of the backup secondary heat exchanger is connected to the input end of the water tank.

[0016] As the preferred technical solution:

[0017] The first diverter valve and the second diverter valve are electromagnetic diverter valves.

[0018] As the preferred technical solution:

[0019] Leakage monitoring sensors are installed on both the main secondary heat exchanger and the backup secondary heat exchanger.

[0020] As the preferred technical solution:

[0021] Pressure sensors are installed on the connecting pipeline between the primary heat exchanger device and the main secondary heat exchanger, on the connecting pipeline between the electronic equipment to be cooled and the main secondary heat exchanger, on the connecting pipeline between the main secondary heat exchanger and the backup secondary heat exchanger, on the connecting pipeline between the backup secondary heat exchanger and the primary heat exchanger device, and on the connecting pipeline between the backup secondary heat exchanger and the water tank.

[0022] As the preferred technical solution:

[0023] The secondary heat exchange device comprises a box, and the main secondary heat exchanger and the backup secondary heat exchanger are installed in the box;

[0024] The box is connected with a primary heat exchange system input pipeline, a primary heat exchange system output pipeline, a chassis coolant output pipeline, and a secondary heat exchange system input pipeline;

[0025] The primary heat exchange system input pipeline is used to connect the output end of the primary heat exchanger device and the input end of the primary secondary heat exchanger, and the primary heat exchange system output pipeline is used to connect the input end of the primary heat exchanger device and the output end of the backup secondary heat exchanger;

[0026] The chassis coolant output pipeline is used to connect the output end of the electronic equipment to be cooled and the input end of the main secondary heat exchanger, and the secondary heat exchange system input pipeline is used to connect the output end of the backup secondary heat exchanger and the input end of the water tank;

[0027] The main secondary heat exchanger and the backup secondary heat exchanger both have a primary heat exchange output end, a primary heat exchange input end, a secondary heat exchange output end and a secondary heat exchange input end.

[0028] As the preferred technical solution:

[0029] The primary heat exchange system input pipeline is used to be connected to the output end of the primary heat exchange system, the primary heat exchange system output pipeline is used to be connected to the input end of the primary heat exchange system, the cooling chassis coolant output pipeline is used to be connected to the liquid-cooled electronic equipment, and the secondary heat exchange system input pipeline is used to be connected to the input end of the water tank.

[0030] As the preferred technical solution:

[0031] The main secondary heat exchanger and the backup secondary heat exchanger both include a protective cover, a recovery base plate and a heat exchanger. The heat exchanger and the protective cover are mounted on the recovery base plate, and the heat exchanger is located inside the protective cover.

[0032] As the preferred technical solution:

[0033] A recovery groove is provided on the recovery bottom plate, and a slope is provided on the recovery bottom plate, wherein the bottom of the slope is connected to the entrance of the recovery groove.

[0034] As the preferred technical solution:

[0035] The box body is provided with a sewage outlet, and the sewage outlet is communicated with the recovery groove.

[0036] As the preferred technical solution:

[0037] The heat exchanger includes a plurality of heat dissipation plates, wherein flow channels are arranged inside the heat dissipation plates, and the primary coolant and the secondary coolant are respectively introduced into two adjacent heat dissipation plates, and heat exchange occurs between the primary coolant and the secondary coolant.

[0038] The present invention further provides a secondary heat exchange method with an emergency treatment function, which performs secondary heat exchange by using the secondary heat exchange device with an emergency treatment function, and specifically comprises the following steps:

[0039] S1: Determine the pipeline where the leak occurs through the alarm conditions of the leakage monitoring sensor and flow sensor;

[0040] S2: Close the stop valve on the leaking pipeline, activate the corresponding emergency recovery branch, and divert the liquid to the corresponding heat exchange circuit through the diverter valve to achieve uninterrupted cooling.

[0041] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0042] 1. The present invention has an emergency handling function. The internal main and backup secondary heat exchangers are connected in series in the primary heat exchange system and the secondary heat exchange system. Both the main and backup secondary heat exchangers are designed with emergency circuits. When leakage occurs, effective measures can be taken according to different situations to ensure that the electronic equipment can work uninterruptedly at critical moments.

[0043] 2. The present invention has higher reliability and integrates two secondary heat exchangers, a main one and a backup one. When the coolant that needs to be cooled passes through one of the heat exchangers, it can reach the required temperature. When it flows through the second secondary heat exchanger, the coolant is further cooled. When one of the secondary heat exchangers leaks and fails, the other secondary heat exchanger can work independently.

[0044] 3. The present invention has a wider scope of application and is safer to use. Since the internally circulating coolant can be cooled twice, the cooling effect is better. It can be applied to liquid-cooled electronic equipment with long working time and high power consumption. At the same time, the leaked liquid is recycled and recirculated to avoid the burning of surrounding electronic equipment due to leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a heat exchange principle diagram of the secondary heat exchange device with emergency treatment function described in the present invention.

[0046] Figure 2 This is an axonometric view of the secondary heat exchange device described in the present invention.

[0047] Figure 3 This is an axonometric view of the secondary heat exchanger described in the present invention.

[0048] Figure 4 This is a diagram of the internal structure of the secondary heat exchanger described in the present invention.

[0049] Figure 5 It is a schematic structural diagram of the heat dissipation plate described in the present invention.

[0050] Figure 6 It is a schematic structural diagram of the integration of the primary heat exchange system and the secondary heat exchange system described in the present invention.

[0051] Figure 7 for Figure 6 Internal structure diagram.

[0052] Figure 8 It is a schematic diagram of cooling the electronic device to be cooled by the secondary heat exchange device of the present invention.

[0053] Icons: 1- water tank, 2- circulating water pump, 3- electronic equipment to be cooled, 4- pressure sensor 1, 5- pressure sensor 2, 6- main secondary heat exchanger, 7- pressure sensor 3, 8- electric control stop valve 1, 9- electromagnetic diverter valve 1, 10- electric control stop valve 2, 11- electric control stop valve 3, 12- electric control stop valve 4, 13- pressure sensor 4, 14- primary heat exchanger device, 15- cooling fan, 16- flow sensor 1, 17- flow sensor 2, 18- backup secondary heat exchanger, 19- electric control stop valve 5, 20- pressure sensor 5, 21- flow sensor 3, 22- pressure sensor 6, 23- electromagnetic diverter valve 2, 24- electric control stop valve 6, 25- electric control stop valve 7, 26- electric control stop valve 8, 27- flow sensor 4, 28-leakage monitoring sensor 1, 29-leakage monitoring sensor 2, 30-primary heat exchange system, 31-secondary heat exchange system, 32-first emergency recovery branch, 33-second emergency recovery branch, 101-box, 102-electronic control box, 104-water tank output pipeline, 105-secondary heat exchange system output pipeline, 106-chassis coolant output pipeline, 107-secondary heat exchange system input pipeline, 108-drain port, 109-primary heat exchange system input pipeline, 110-primary heat exchange system output pipeline, 401-protective cover, 402-recovery bottom plate, 403-heat sink, 404-primary heat exchange input end, 405-secondary heat exchange output end, 406-primary heat exchange output end, 407-secondary heat exchange input end, 408-sealing strip. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Example 1

[0056] like Figure 1-Figure 8 As shown, this embodiment provides a secondary heat exchange device with emergency processing function, including a primary heat exchange system 30 and a secondary heat exchange system 31. The secondary heat exchange device is used to cool the electronic device 3 to be cooled, and the electronic device 3 to be cooled can be a liquid-cooled electronic device or a liquid-cooled chassis.

[0057] like Figure 1As shown, the primary heat exchange system 30 includes a primary heat exchanger device 14, and a cooling fan 15 is arranged next to the primary heat exchanger device 14; the primary heat exchanger device 14 is connected in series with the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 in sequence, and the primary heat exchanger device 14, the main secondary heat exchanger 6, and the backup secondary heat exchanger 18 together constitute the primary heat exchange system 30.

[0058] Specifically, the output end of the primary heat exchanger device 14 is connected to the primary heat exchange input end of the main secondary heat exchanger 6, and a pressure sensor 4 is installed on the pipeline between the primary heat exchanger device 14 and the main secondary heat exchanger 6;

[0059] The primary heat exchange output end of the main secondary heat exchanger 6 is connected to the primary heat exchange input end of the backup secondary heat exchanger 18, and a pressure sensor 3 7, an electric control stop valve 1 8 and a flow sensor 16 are installed on the pipeline between the main secondary heat exchanger 6 and the backup secondary heat exchanger 18;

[0060] The primary heat exchange output end of the backup secondary heat exchanger 18 is connected to the input end of the primary heat exchanger device 14, and a primary heat exchange loop is formed through the above connection structure;

[0061] An electrically controlled stop valve 5 19 , a pressure sensor 5 20 and a flow sensor 3 21 are installed on the pipeline between the backup secondary heat exchanger 18 and the primary heat exchanger device 14 .

[0062] The primary heat exchanger device 14, the main secondary heat exchanger 6, the backup secondary heat exchanger 18 and the connecting pipelines between the parts serve as the primary heat exchange system 30. Figure 1 As shown in the dotted box in the upper middle.

[0063] The secondary heat exchange system 31 includes a water tank 1 and a circulating water pump 2, the output end of the water tank 1 is connected to the input end of the circulating water pump 2, the output end of the circulating water pump 2 is connected to the input end of the electronic device 3 to be cooled, the electronic device 3 to be cooled is connected in series with the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 in sequence, the water tank 1, the circulating water pump 2, the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 together constitute the secondary heat exchange system 31.

[0064] The secondary coolant in the secondary heat exchange system 31 is used to cool the electronic device 3 to be cooled, and the primary coolant in the primary heat exchange system 30 is used to cool the secondary coolant.

[0065] The output end of the electronic device to be cooled 3 is connected to the secondary heat exchange input end of the main secondary heat exchanger 6, and a pressure sensor 5 is installed on the pipeline between the electronic device to be cooled 3 and the main secondary heat exchanger 6;

[0066] The secondary heat exchange output end of the main secondary heat exchanger 6 is connected to the secondary heat exchange input end of the backup secondary heat exchanger 18, and an electric control stop valve 2 10, a pressure sensor 4 13 and a flow sensor 2 17 are installed on the pipeline between the main secondary heat exchanger 6 and the backup secondary heat exchanger 18;

[0067] The secondary heat exchange output end of the backup secondary heat exchanger 18 is connected to the input end of the water tank 1 to form a loop, and a secondary heat exchange loop is formed through the above connection structure;

[0068] A pressure sensor six 22, an electric control stop valve eight 26 and a flow sensor four 27 are installed on the pipeline between the backup secondary heat exchanger 18 and the water tank 1.

[0069] The water tank 1, the circulating water pump 2, the main secondary heat exchanger 6, the backup secondary heat exchanger 18 and the connecting pipes between the parts serve as the secondary heat exchange system 31. Figure 1 As shown in the dotted box in the lower middle. Figure 1 The dotted frame in the middle represents the secondary heat exchange device of the present invention.

[0070] Furthermore, the main secondary heat exchanger 6 is connected to a first emergency recovery branch 32. Specifically, the emergency output end of the main secondary heat exchanger 6 is connected to the input end of the electromagnetic diverter valve 9 on the first emergency recovery branch 32, and the first outlet end and the second outlet end of the electromagnetic diverter valve 9 are respectively connected to the primary heat exchange input end and the secondary heat exchange input end of the backup secondary heat exchanger 18.

[0071] The backup secondary heat exchanger 18 is connected to a second emergency recovery branch 33. Specifically, the emergency output end of the backup secondary heat exchanger 18 is connected to the input end of the electromagnetic diverter valve 23 on the second emergency recovery branch 33, and the first outlet end and the second outlet end of the electromagnetic diverter valve 23 are respectively connected to the input end of the primary heat exchanger device 14 and the input end of the water tank 1.

[0072] The main secondary heat exchanger 6 is provided with a leakage monitoring sensor 1 28 , and the backup secondary heat exchanger 18 is provided with a leakage monitoring sensor 2 29 .

[0073] When the leakage monitoring sensor and the flow sensor do not alarm, the secondary heat exchange device works normally, the primary heat exchanger device 14 outputs the primary coolant and passes through the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 in sequence, the secondary coolant is output by the water tank 1, and cools the electronic device 3 to be cooled through the circulating water pump 2, and the heated secondary coolant passes through the main secondary heat exchanger 6 and the backup secondary heat exchanger 18, and the two coolants exchange heat here, and the primary coolant cools the secondary coolant. After the secondary coolant is cooled, it finally flows back to the water tank 1. When the secondary coolant passes through the main secondary heat exchanger 6, the temperature has been reduced and can meet the requirements, and then it is further cooled by the backup secondary heat exchanger 18. After the secondary coolant is cooled, the primary coolant flows out of the backup secondary heat exchanger 18 and flows back to the primary heat exchanger device 14, completing a heat exchange cycle, and realizing the cooling of the secondary coolant.

[0074] Since the first emergency recovery branch 32 and the second emergency recovery branch 33 are provided, the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 serve as a main backup for each other. When one of them fails due to leakage, the other can complete the heat exchange function independently.

[0075] When a leak occurs, the sensor on the pipeline will sound an alarm to remind the operator to take appropriate emergency measures to ensure that the device can still work, mainly including the following situations:

[0076] 1. When the leakage monitoring sensor 28 and the flow sensor 16 sound an alarm, it can be determined that the leakage is in the primary heat exchange cycle of the main secondary heat exchanger 6. The electric control stop valve 8 can be closed and the electric control stop valve 4 12 can be opened. The electromagnetic diverter valve 9 can be adjusted according to the predetermined flow ratio to replenish the leaked liquid to the primary heat exchange circuit through the first emergency recovery branch 32. At this time, the backup secondary heat exchanger 18 works normally;

[0077] 2. When the leakage monitoring sensor 1 28 and the flow sensor 2 17 sound an alarm, it can be determined that the leakage is in the secondary heat exchange cycle of the main secondary heat exchanger 6. The electric control stop valve 2 10 can be closed and the electric control stop valve 3 11 can be opened. The electromagnetic diverter valve 1 9 can be adjusted according to the predetermined flow ratio to replenish the leaked liquid to the secondary heat exchange circuit through the first emergency recovery branch 32. At this time, the backup secondary heat exchanger 18 works normally.

[0078] 3. When the leakage monitoring sensor 29 and the flow sensor 3 21 sound an alarm, it can be determined that the leakage is in the primary heat exchange cycle of the backup secondary heat exchanger 18. The electronically controlled stop valve 5 19 can be closed and the electronically controlled stop valve 7 25 can be opened. The electromagnetic diverter valve 2 23 can be adjusted according to the predetermined flow ratio to replenish the leaked liquid to the primary heat exchange circuit through the second emergency recovery branch 33. At this time, the main secondary heat exchanger 6 works normally.

[0079] 4. When the leakage monitoring sensor 29 and the flow sensor 4 27 sound an alarm, it can be determined that the leakage is in the secondary heat exchange cycle of the backup secondary heat exchanger 18. The electronically controlled stop valve 8 26 can be closed and the electronically controlled stop valve 6 24 can be opened. The electromagnetic diverter valve 23 can be adjusted according to a predetermined flow ratio to replenish the leaked liquid to the secondary heat exchange circuit through the second emergency recovery branch 33. At this time, the main secondary heat exchanger 6 works normally.

[0080] 5. When the leakage monitoring sensor 1 28, flow sensor 1 16, and flow sensor 2 17 all sound an alarm, it can be determined that both the primary and secondary heat exchange cycles of the primary and secondary heat exchangers 6 are leaking. The electromagnetic diverter valve 1 9 can be adjusted according to a predetermined flow ratio by closing the electric control stop valve 1 8 and the electric control stop valve 2 10 and opening the electric control stop valve 3 11 and the electric control stop valve 4 12, and the leaking liquid can be respectively supplemented to the primary and secondary heat exchange circuits through the first emergency recovery branch 32. At this time, the backup secondary heat exchanger 18 is operating normally;

[0081] 6. When the leakage monitoring sensor 29, the flow sensor 3 21, and the flow sensor 4 27 all sound an alarm, it can be determined that the primary and secondary heat exchange cycles of the backup secondary heat exchanger 18 are leaking. The electromagnetic diverter valve 23 can be adjusted according to the predetermined flow ratio by closing the electric control stop valve 5 19 and the electric control stop valve 8 26 and opening the electric control stop valve 6 24 and the electric control stop valve 7 25, and the leaked liquid can be replenished to the primary and secondary heat exchange circuits through the second emergency recovery branch 33. At this time, the main secondary heat exchanger 6 works normally;

[0082] 7. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 1 16 and the flow sensor 3 21 also sound an alarm, it can be determined that the primary heat exchange cycle of the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 is leaking. At this time, it is necessary to close the electric control stop valve 1 8 and the electric control stop valve 5 19 and open the electric control stop valve 4 12 and the electric control stop valve 7 25, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary heat exchange circuit through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0083] 8. When both the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 sound an alarm, and the flow sensor 1 16 and the flow sensor 4 27 also sound an alarm, it can be determined that both the primary heat exchange cycle of the main secondary heat exchanger 6 and the secondary heat exchange cycle of the backup secondary heat exchanger 18 are leaking. At this time, it is necessary to close the electric control stop valve 1 8 and the electric control stop valve 8 26 and open the electric control stop valve 4 12 and the electric control stop valve 6 24, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary and secondary heat exchange circuits through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0084] 9. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 2 17 and the flow sensor 3 21 also sound an alarm, it can be determined that the secondary heat exchange cycle of the main secondary heat exchanger 6 and the primary heat exchange cycle of the backup secondary heat exchanger 18 are both leaking. At this time, it is necessary to close the electric control stop valve 2 10 and the electric control stop valve 5 19 and open the electric control stop valve 3 11 and the electric control stop valve 7 25, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary and secondary heat exchange circuits through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0085] 10. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 2 17 and the flow sensor 4 27 also sound an alarm, it can be determined that the secondary heat exchange cycles of the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 are both leaking. At this time, it is necessary to close the electric control stop valve 2 10 and the electric control stop valve 8 26 and open the electric control stop valve 3 11 and the electric control stop valve 6 24, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the secondary heat exchange circuit through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0086] 11. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 1 16, the flow sensor 2 17 and the flow sensor 3 21 also sound an alarm, it can be determined that the primary secondary heat exchanger 6, the secondary heat exchange cycle, and the backup secondary heat exchanger 18 primary heat exchange cycle are leaking. At this time, it is necessary to close the electric control stop valve 1 8, the electric control stop valve 2 10 and the electric control stop valve 5 19 and open the electric control stop valve 4 12, the electric control stop valve 3 11 and the electric control stop valve 7 25, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary and secondary heat exchange circuits through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0087] 12. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 1 16, the flow sensor 2 17 and the flow sensor 4 27 also sound an alarm, it can be determined that the primary secondary heat exchanger 61, the secondary heat exchange cycle, and the backup secondary heat exchanger 18 secondary heat exchange cycle are leaking. At this time, it is necessary to close the electric control stop valve 1 8, the electric control stop valve 2 10 and the electric control stop valve 8 26 and open the electric control stop valve 4 12, the electric control stop valve 3 11 and the electric control stop valve 6 24, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary and secondary heat exchange circuits through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0088] 13. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 1 16, the flow sensor 3 21 and the flow sensor 4 27 also sound an alarm, it can be determined that the primary heat exchange cycle of the main secondary heat exchanger 6 and the primary and secondary heat exchange cycles of the backup secondary heat exchanger 18 are leaking. At this time, it is necessary to close the electric control stop valve 1 8, the electric control stop valve 5 19 and the electric control stop valve 8 26 and open the electric control stop valve 4 12, the electric control stop valve 7 25 and the electric control stop valve 6 24, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary and secondary heat exchange circuits through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0089] 14. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 2 17, the flow sensor 3 21 and the flow sensor 4 27 also sound an alarm, it can be determined that the secondary heat exchange cycle of the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 are leaking. At this time, it is necessary to close the electric control stop valve 2 10, the electric control stop valve 5 19 and the electric control stop valve 8 26 and open the electric control stop valve 3 11, the electric control stop valve 7 25 and the electric control stop valve 6 24, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary and secondary heat exchange circuits through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work;

[0090] 15. When the leakage monitoring sensor 1 28 and the leakage monitoring sensor 2 29 both sound an alarm, and the flow sensor 1 16, the flow sensor 2 17, the flow sensor 3 21 and the flow sensor 4 27 all sound an alarm, it can be determined that the main secondary heat exchanger 6-, the secondary heat exchange cycle, and the backup secondary heat exchanger 18-, the secondary heat exchange cycle are leaking. At this time, it is necessary to close the electric control stop valve 1 8, the electric control stop valve 2 10, the electric control stop valve 5 19 and the electric control stop valve 8 26 and open the electric control stop valve 3 11, the electric control stop valve 4 12, the electric control stop valve 7 25 and the electric control stop valve 6 24, adjust the electromagnetic diverter valve 1 9 and the electromagnetic diverter valve 2 23 according to the predetermined flow ratio, and replenish the leaked liquid to the primary and secondary heat exchange circuits through the first and second emergency recovery branches, so that the secondary heat exchange system 31 continues to work. At this time, the primary coolant in the primary heat exchanger device 14 and the secondary coolant discharged from the electronic device to be cooled 3 are mixed and cooled, and output to the primary heat exchanger device 14 and the water tank 1 in a predetermined ratio. At this time, the electronic device to be cooled 3 can also be cooled. The secondary coolant is cooled. Although it does not reach the expected target value, it can maintain the normal operation of the electronic device to be cooled 3 for a certain period of time.

[0091] In this embodiment, the secondary heat exchange device includes a box body 101, and an electronic control box 102 and a system water tank 103 are installed on the top of the box body 101. The system water tank 103 is the water tank 1. The system water tank 103 is connected with a water tank output pipeline 104 and a secondary heat exchange system output pipeline 105. The water tank output pipeline 104 is used to connect to the circulating water pump 2, and the secondary heat exchange system output pipeline 105 is used to connect the backup secondary heat exchanger 18 and the system water tank 103. The electronic control box 102 is used to control the system electronically controlled valve.

[0092] The housing 101 is provided with a main secondary heat exchanger 6 and a backup secondary heat exchanger 18. Figure 3 and Figure 4As shown, the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 both include a protective cover 401, a recovery base plate 402, a heat exchanger, a pipeline and a connector. The heat exchanger is mounted on the recovery base plate 402 by screw connection, and the protective cover 401 is sealed with the recovery base plate 402 by screws and a sealing strip 408. Recovery grooves are provided on the four sides of the recovery base plate 402, and the portion of the recovery base plate 402 from the heat exchanger to the recovery groove adopts a slope design, and the bottom of the slope is connected to the inlet of the recovery groove, which is convenient for collecting internal leaked liquid, and the leaked liquid is collected to the emergency output end of the secondary heat exchanger through the recovery groove. The heat exchanger is formed by brazing a plurality of heat sinks 403, wherein a flow channel is provided inside the heat sink 403. The two heat sinks 403 correspond to two input and output circuits, namely, a primary heat exchange circuit and a secondary heat exchange circuit. During installation, the two heat sinks 403 are staggered and brazed, and two different coolants are introduced during operation, thereby realizing that the primary coolant in the primary heat exchange system 30 cools the secondary coolant in the secondary heat exchange system 31 through the flow channel, thereby achieving the purpose of secondary heat exchange. The structure of the heat sink 403 is as follows: Figure 5 shown.

[0093] like Figure 4 As shown, the main secondary heat exchanger 6 and the backup secondary heat exchanger 18 both have a primary heat exchange output end 404 , a primary heat exchange input end 405 , a secondary heat exchange output end 406 and a secondary heat exchange input end 407 .

[0094] The box body 101 is connected to a primary heat exchange system input pipeline 109 and a primary heat exchange system output pipeline 110. The primary heat exchange system input pipeline 109 is used to connect the output end of the primary heat exchanger device 14 and the input end of the main secondary heat exchanger 6, and the primary heat exchange system output pipeline 110 is used to connect the input end of the primary heat exchanger device 14 and the output end of the backup secondary heat exchanger 18.

[0095] The box body 101 is connected with a secondary heat exchange system input pipeline 107 and a chassis coolant output pipeline 106. The secondary heat exchange system input pipeline 107 is used to be connected to the input end of the main secondary heat exchanger 6, and the chassis coolant output pipeline 106 is used to be connected to the output end of the electronic device 3 to be cooled.

[0096] A sewage outlet 108 is disposed on one side of the box body 101 , and the sewage outlet 108 is communicated with the recovery groove.

[0097] The present invention collects and recirculates leaked coolant through the main and backup secondary heat exchangers and the first and second emergency recovery branches designed, ensuring that stable coolant is provided to liquid-cooled electronic equipment when it needs to work uninterruptedly, eliminating the problem of secondary heat exchange devices stopping working due to internal coolant leakage in the prior art. When one of the secondary heat exchangers leaks, its main (backup) can still work independently so that the heat exchange system is not affected. When both secondary heat exchangers leak, the use time after the failure can be extended, ensuring the normal operation of the electronic equipment within a certain period of time, and effectively improving the reliability of the heat exchange system.

[0098] Taking a certain ground-based liquid-cooled electronic equipment as an example, the overall dimensions of the ground-based liquid-cooled electronic equipment are: 500mm×400mm×265mm, and the heat consumption is: 5000W.

[0099] In a ground project, the secondary heat exchange device is Figure 6 and Figure 7 As shown, the secondary heat exchange device is used to cool the liquid-cooled electronic equipment (electronic equipment to be cooled 3) as shown in FIG. Figure 8 As shown, compared with the prior art, the secondary heat exchange device with emergency processing function of the present invention has significantly improved cooling effect, and at the same time, reliability is more guaranteed, ensuring that liquid-cooled electronic equipment can successfully complete tasks as required, and greatly improving the cooling effect and emergency processing function capabilities of the secondary heat exchange device in the field of engineering applications. At the same time, for liquid-cooled electronic equipment that requires high-reliability secondary heat exchange devices, the present invention can also be applied to other occasions.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A secondary heat exchange device with emergency treatment function, characterized in that: It comprises a main secondary heat exchanger and a backup secondary heat exchanger, wherein the main secondary heat exchanger and the backup secondary heat exchanger are connected in series in a primary heat exchange system and a secondary heat exchange system at the same time, and the electronic equipment to be cooled is connected in series in the secondary heat exchange system; The primary heat exchange system further comprises a primary heat exchanger device, wherein the primary heat exchanger device, the primary secondary heat exchanger and the backup secondary heat exchanger are sequentially connected to form a loop; The secondary heat exchange system further comprises a water tank and a circulating water pump, wherein the water tank, the circulating water pump, the electronic equipment to be cooled, the main secondary heat exchanger and the backup secondary heat exchanger are sequentially connected to form a loop; The secondary coolant in the secondary heat exchange system is used to cool the electronic device to be cooled, and the primary coolant in the primary heat exchange system is used to cool the secondary coolant; A shutoff valve and a flow sensor are installed on the connecting pipeline between the main secondary heat exchanger and the backup secondary heat exchanger, and a shutoff valve and a flow sensor are also installed on the connecting pipeline between the backup secondary heat exchanger and the primary heat exchanger device and the water tank; The main secondary heat exchanger is connected to a first emergency recovery branch, which is connected to the primary heat exchange input end of the backup secondary heat exchanger and the secondary heat exchange input end of the backup secondary heat exchanger through a diverter valve 1; the backup secondary heat exchanger is connected to a second emergency recovery branch, which is connected to the input end of the primary heat exchanger device and the input end of the water tank through a diverter valve 2.

2. The secondary heat exchange device with emergency treatment function according to claim 1, characterized in that: The output end of the primary heat exchanger device is connected to the primary heat exchange input end of the main secondary heat exchanger, the primary heat exchange output end of the main secondary heat exchanger is connected to the primary heat exchange input end of the backup secondary heat exchanger, and the primary heat exchange output end of the backup secondary heat exchanger is connected to the input end of the primary heat exchanger device; The output end of the water tank is connected to the input end of the circulating water pump, the output end of the circulating water pump is connected to the input end of the electronic equipment to be cooled, the output end of the electronic equipment to be cooled is connected to the secondary heat exchange input end of the main secondary heat exchanger, the secondary heat exchange output end of the main secondary heat exchanger is connected to the secondary heat exchange input end of the backup secondary heat exchanger, and the secondary heat exchange output end of the backup secondary heat exchanger is connected to the input end of the water tank.

3. The secondary heat exchange device with emergency treatment function according to claim 1, characterized in that: The first diverter valve and the second diverter valve are electromagnetic diverter valves.

4. The secondary heat exchange device with emergency treatment function according to claim 1, characterized in that: Leakage monitoring sensors are installed on both the main secondary heat exchanger and the backup secondary heat exchanger.

5. The secondary heat exchange device with emergency treatment function according to claim 1, characterized in that: Pressure sensors are installed on the connecting pipeline between the primary heat exchanger device and the main secondary heat exchanger, on the connecting pipeline between the electronic equipment to be cooled and the main secondary heat exchanger, on the connecting pipeline between the main secondary heat exchanger and the backup secondary heat exchanger, on the connecting pipeline between the backup secondary heat exchanger and the primary heat exchanger device, and on the connecting pipeline between the backup secondary heat exchanger and the water tank.

6. The secondary heat exchange device with emergency treatment function according to claim 1, characterized in that: The secondary heat exchange device comprises a box, and the main secondary heat exchanger and the backup secondary heat exchanger are installed in the box; The box is connected with a primary heat exchange system input pipeline, a primary heat exchange system output pipeline, a chassis coolant output pipeline, and a secondary heat exchange system input pipeline; The input pipeline of the primary heat exchange system is used to connect the output end of the primary heat exchanger device and the input end of the primary secondary heat exchanger, and the output pipeline of the primary heat exchange system is used to connect the input end of the primary heat exchanger device and the output end of the backup secondary heat exchanger; The chassis coolant output pipeline is used to connect the output end of the electronic equipment to be cooled and the input end of the main secondary heat exchanger, and the secondary heat exchange system input pipeline is used to connect the output end of the backup secondary heat exchanger and the input end of the water tank; The main secondary heat exchanger and the backup secondary heat exchanger both have a primary heat exchange output end, a primary heat exchange input end, a secondary heat exchange output end and a secondary heat exchange input end.

7. The secondary heat exchange device with emergency treatment function according to claim 1, characterized in that: The main secondary heat exchanger and the backup secondary heat exchanger both include a protective cover, a recovery base plate and a heat exchanger. The heat exchanger and the protective cover are mounted on the recovery base plate, and the heat exchanger is located in the protective cover.

8. The secondary heat exchange device with emergency treatment function according to claim 7, characterized in that: A recovery groove is provided on the recovery bottom plate, and a slope is provided on the recovery bottom plate, wherein the bottom of the slope is connected to the entrance of the recovery groove.

9. The secondary heat exchange device with emergency treatment function according to claim 7, characterized in that: The heat exchanger includes a plurality of heat dissipation plates, wherein flow channels are arranged inside the heat dissipation plates, and the primary coolant and the secondary coolant are respectively introduced into two adjacent heat dissipation plates, and heat exchange occurs between the primary coolant and the secondary coolant.

10. A secondary heat exchange method with emergency treatment function, characterized in that: The secondary heat exchange is performed by the secondary heat exchange device with emergency treatment function as claimed in claim 3, specifically comprising the following steps: S1: Determine the pipeline where the leak occurs through the alarm conditions of the leakage monitoring sensor and flow sensor; S2: Close the stop valve on the leaking pipeline, activate the corresponding emergency recovery branch, and divert the liquid to the corresponding heat exchange circuit through the diverter valve to achieve uninterrupted cooling.

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