Efficient heat exchange device for rail transit thermal control machine room

Abstract

The invention discloses an efficient heat exchange device for a rail transit thermal control machine room, particularly relates to the technical field of machine room heat exchange, and comprises a base, and at least one plate heat exchanger is mounted at the end of the top surface of the base. By arranging the flow guide units, condensed water formed by condensing water vapor in air on the surfaces of the plate sheets flows down through the strip-shaped notches in the transverse plates and then is guided into the corresponding water collecting grooves under the guiding effect of the flow guide plates, directional collection of the condensed water in all the plate sheet partitions is achieved, the situation that the condensed water drips and splashes disorderly at the bottom is avoided, and the heat exchange efficiency is improved. Condensate water correspondingly formed by different areas and different plate sheets is collected in a partitioned mode, in the process, temperature changes of the areas below the corresponding plate sheets are detected through temperature sensors, heat exchange state information of different plate sheet areas of the plate heat exchanger is obtained, and the actual operation states of the different plate sheet areas are analyzed by combining the collection conditions of the condensate water in all water collection grooves. And a basis is provided for subsequent operation adjustment, fault judgment and maintenance.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology for computer rooms, specifically a high-efficiency heat exchange device for thermal control computer rooms in rail transit. Background Technology

[0002] Integrated monitoring equipment is highly concentrated in various thermal control rooms. During long-term continuous operation, this equipment generates a significant amount of heat. If environmental parameters such as temperature and humidity within the room are not properly controlled, it can easily lead to performance degradation of electronic components, accelerated insulation aging, increased system malfunction rates, and even equipment shutdowns, thereby affecting the safety, stability, and operational reliability of the rail transit system. Therefore, the heat dissipation and temperature control capabilities of thermal control rooms have become a crucial technical aspect for ensuring the safe operation of rail transit equipment.

[0003] Plate heat exchangers are typically used for cooling in the thermal control rooms of rail transit systems. These exchangers facilitate indirect heat exchange between the high-temperature air inside the room and the low-temperature air outside, thereby reducing the room's air temperature. However, during operation, condensation easily forms on the plate surfaces of plate heat exchangers. In existing structures, this condensation usually drips randomly from the bottom, leading to uncontrollable dripping paths, splashing, and mixing of condensation from different areas. This hinders the orderly collection of condensation and the assessment of operational status. It also makes it difficult to analyze the heat exchange status and actual operating conditions of different plate areas based on condensation accumulation, and hinders fault diagnosis and maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency heat exchange device for thermal control rooms in rail transit, so as to solve the problems mentioned in the background art.

[0005] The main technical problem solved by this invention is: In existing heat exchangers, condensate usually drips randomly from the bottom, which can easily lead to uncontrollable dripping paths, splashing, and mixing of condensate from different areas. It is difficult to analyze the heat exchange status and actual operating status of different plate areas by combining the condensate accumulation situation, which is not convenient for fault diagnosis and maintenance.

[0006] This invention can be achieved through the following technical solutions: A high-efficiency heat exchange device for a thermal control room in rail transit includes a base, at least one plate heat exchanger is installed on the top end of the base, and the bottom of the plate heat exchanger is provided with a water receiving tank for directional collection of condensate from the corresponding plates. The water receiving trough is equipped with a partition plate inside, and several water collection troughs are provided on both sides of the partition plate. The top of the water receiving trough is provided with a flow guiding unit installed at the bottom of the corresponding plate heat exchanger to guide the condensate. The flow guiding unit includes a horizontal plate that contacts the plates inside the plate heat exchanger. The surface of the horizontal plate is provided with several strip-shaped slots for condensate to pass through, and the lower surface of the horizontal plate is provided with supporting vertical plates adjacent to the inner side of the strip-shaped slots. The ends of the several supporting vertical plates are fixed to the upper end face of the water receiving bottom tank. Several supporting vertical plates have guide plates on both sides of their bottom to guide the condensate on the electrode plates into the corresponding water collection tank; A monitoring area for detecting the temperature below the plate is formed between two adjacent support vertical plates, and a temperature sensor is installed in the monitoring area; The plate heat exchanger has four outlets on its surface. One of the upper outlets is connected to a hot air inlet pipe. Above the hot air inlet pipe is a pressure equalization channel that connects to another upper outlet. One of the bottom outlets is connected to a condenser inlet pipe. The end of the condenser inlet pipe is connected to an external cold air duct via an induced draft fan.

[0007] A further technical improvement of the present invention is that: several transparent windows are provided on both sides of the water receiving bottom tank, and scale lines for monitoring the liquid level in the corresponding water collection tank are installed in the transparent windows.

[0008] A further technical improvement of the present invention is that: the bottom of the partition plate is provided with several connecting channels, each connecting channel is connected to the water collection tanks on both sides, and each connecting channel is provided with a solenoid valve.

[0009] A further technical improvement of the present invention is that: the bottom side of the water receiving tank is provided with a number of drain ports that are connected to the corresponding water collection tanks, and the ends of the multiple drain ports are connected to the same manifold.

[0010] A further technical improvement of the present invention is that: both ends of one side surface of the pressure equalization channel are provided with return air pipes connected to the corresponding outlets, and a baffle plate is provided in the middle of the inner cavity of the pressure equalization channel, and flow equalization plates are provided on both sides of the baffle plate; the other side surface of the pressure equalization channel is provided with two branch interfaces, each of which is connected to the corresponding flow equalization plate in the pressure equalization channel.

[0011] A further technical improvement of the present invention is that: the end of the interface is connected to a cold air return pipe facing the heat-generating area of ​​the equipment in the computer room, and the cold air return pipe and the hot air inlet pipe are not connected to the same installation path.

[0012] A further technical improvement of the present invention is that: the surface of the flow equalization plate is provided with a plurality of flow equalization holes, and the inner cavity of the flow equalization plate is provided with a slot extending to the edge, and a plug-in plate is slidably installed in the slot. The surface of the plug-in plate is provided with a plurality of through holes, and the through holes are matched with the corresponding flow equalization holes.

[0013] A further technical improvement of the present invention is that: one side surface of the pressure equalization channel is provided with a groove for the corresponding plug-in plate to pass through, and a sealing frame for sealing the outer wall of the plug-in plate is installed on the outside of each groove. An extension plate is fixed to the end of the plug-in plate, and an electromagnet is installed on the surface of the equalizing channel. The pushing end of the electromagnet is fixed to the extension plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a flow guiding unit, the condensate formed by water vapor in the air condensing on the plate surface flows down through the strip notches on the horizontal plate and is guided by the flow guiding plate to be directed into the corresponding water collection tanks. This achieves directional collection of condensate from each plate area, avoiding disorderly dripping and splashing of condensate at the bottom. The condensate formed in different areas and on different plates is collected in sections. During this process, temperature sensors detect the temperature change in the area below the corresponding plate to obtain the heat exchange status information of different plate areas of the plate heat exchanger. Combined with the condensate collection situation in each water collection tank, the actual operating status of different plate areas is analyzed, providing a basis for subsequent operation adjustment, fault diagnosis and maintenance. 2. By comparing the liquid level height of each transparent window with the scale lines, the difference in condensate accumulation in different water collection tanks can be judged, thereby indirectly reflecting the condensation state of different plate areas of the plate heat exchanger. The solenoid valve in the corresponding connecting channel is controlled to open, and the water collection tanks on both sides of the partition plate, which were originally independent, are connected through the connecting channel. The condensate can flow under the action of liquid level difference, so as to achieve water balance between water collection tanks or guide it to the designated discharge side. 3. Based on the load changes in different heat-generating areas of the computer room, the sliding distance of the plug-in plates in different flow equalization plates is controlled respectively. When the position of the through hole and the flow equalization hole on the flow equalization plate are aligned, the cooling airflow passes through the flow equalization plate over a larger area, the airflow resistance is small, and the air supply volume of the corresponding branch of the interface is large. When there is a partial misalignment between the through hole and the flow equalization hole, the actual flow area of ​​the flow equalization plate is reduced, which reduces the airflow of the path and changes the air supply volume of the corresponding branch of the interface, so as to realize on-demand air supply to different heat-generating areas. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the water receiving base of the present invention; Figure 3 This is a schematic diagram of the installation structure of the water collection tank and the connecting channel of the present invention; Figure 4 This is a schematic diagram of the internal structure of the equalizing channel of the present invention; Figure 5 This is a schematic diagram of the three-dimensional installation structure of the flow equalization plate and the plug-in plate of the present invention.

[0017] In the diagram: 1. Base; 2. Water inlet tank; 3. Plate heat exchanger; 4. Condensate inlet pipe; 5. Outlet; 6. Hot air inlet pipe; 7. Pressure equalization channel; 8. Sub-port; 9. Water collection tank; 10. Connecting channel; 11. Drain port; 12. Manifold; 13. Scale line; 14. Support plate; 15. Solenoid valve; 16. Temperature sensor; 17. Guide plate; 18. Return pipe; 19. Flow equalization plate; 20. Sealing frame; 21. Electromagnet; 22. Connecting plate; 24. Flow equalization orifice; 25. Through hole; 26. Horizontal plate. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0019] Please see Figures 1-5 As shown, the present invention provides a high-efficiency heat exchange device for a thermal control room of rail transit, including a base 1, at least one plate heat exchanger 3 is installed on the top end of the base 1, and the bottom of the plate heat exchanger 3 is provided with a water receiving tank 2 for directional collection of condensate from the corresponding plates. The interior of the water receiving trough 2 is equipped with a partition plate, and several water collection troughs 9 are provided on both sides of the partition plate; The top of the water receiving tank 2 is equipped with a flow guiding unit installed at the bottom of the corresponding plate heat exchanger 3 to guide the condensate. The flow guiding unit includes a horizontal plate 26 that contacts the inner plates of the plate heat exchanger 3. The surface of the horizontal plate 26 is provided with several strip-shaped grooves for condensate to pass through, and the lower surface of the horizontal plate 26 is provided with supporting vertical plates 14 adjacent to the inner side of the strip-shaped grooves. The ends of several supporting vertical plates 14 are fixed to the upper end face of the water receiving bottom tank 2. Several supporting vertical plates 14 have guide plates 17 on both sides of their bottom to guide the condensate on the electrode plates into the corresponding water collection tank 9; A monitoring area for detecting the temperature below the plate is formed between two adjacent support vertical plates 14, and a temperature sensor 16 is installed in the monitoring area; The plate heat exchanger 3 has four outlets 5 on its surface. One of the upper outlets 5 is connected to a hot air inlet pipe 6. Above the hot air inlet pipe 6 is a pressure equalization channel 7 that connects to another upper outlet 5. One of the bottom outlets 5 is connected to a condenser inlet pipe 4. The end of the condenser inlet pipe 4 is connected to an external cold air duct via an induced draft fan.

[0020] When the device is working, the high-temperature air generated by the operation of communication equipment, signal equipment, and power equipment in the thermal control room enters the hot air flow channel of the plate heat exchanger 3 through the hot air inlet pipe 6. At the same time, the low-temperature air from outside enters the cold air flow channel of the plate heat exchanger 3 through the condenser inlet pipe 4 under the action of the induced draft fan. The hot air and cold air flow along their respective channels in the plate heat exchanger 3. They are separated by plates and do not come into direct contact. Instead, they exchange heat indirectly through the plates, allowing the heat in the hot air to be transferred to the cold air side, thereby achieving air cooling on the equipment room side.

[0021] After heat exchange, the cold air flow is drawn out from the corresponding outlet 5 on the plate heat exchanger 3 and buffered and evenly distributed through the pressure equalization channel 7. This reduces the local flow velocity of the cooling airflow, equalizes the airflow pressure, and minimizes the problem of uneven cold air flow at outlet 5. This allows the cooled air to be delivered to the target area more stably and evenly, improving airflow uniformity and heat exchange utilization. After the heat is carried away, the temperature of the hot air decreases, forming cooling air suitable for being re-delivered to the thermal control room for continuous heat dissipation of the equipment in the room.

[0022] During the heat exchange process, when the surface temperature of the plates inside the plate heat exchanger 3 is lower than the local air dew point temperature, water vapor in the air condenses on the plate surface to form condensate. Several water collection tanks 9 collect the condensate from different areas and corresponding plates in designated zones.

[0023] The condensate at the bottom of the plates flows down through the grooves on the horizontal plate 26 and is guided by the guide plate 17 into the corresponding collection tanks 9. This achieves directional collection of condensate from each plate zone, preventing disorderly dripping, splashing, or cross-flowing of condensate at the bottom. This reduces the disorderly dripping and splashing of condensate at the bottom of the plate heat exchanger 3, minimizing the adverse effects of condensate on surrounding equipment and the machine room environment. During this process, the temperature sensor 16 detects temperature changes in the area below the corresponding plate, obtaining heat exchange status information for different plate areas of the plate heat exchanger 3. The temperature data detected by the temperature sensor 16 is used to determine the local heat exchange intensity, cooling effect, and condensation trend of the plates. Combined with the condensate collection situation in each collection tank 9, the actual operating status of different plate areas is analyzed, providing a basis for subsequent operation adjustment, fault diagnosis, and maintenance.

[0024] On the one hand, the plate heat exchanger 3 enables efficient indirect heat exchange between the high-temperature air in the computer room and the low-temperature air outside. On the other hand, the water receiving tank 2, the flow guiding unit, the water collection tank 9 and the temperature sensor 16 enable directional and zoned collection of condensate and real-time monitoring of the temperature below the plates, thus taking into account heat exchange efficiency, condensate management and operation status monitoring.

[0025] See Figure 2As shown, several transparent windows are provided on both sides of the bottom water tank 2, and scale lines 13 for monitoring the liquid level in the corresponding water collection tank 9 are installed in the transparent windows.

[0026] During the operation of the plate heat exchanger 3, when the plate surface temperature is lower than the air dew point temperature, water vapor in the air condenses on the plate surface to form condensate. The condensate is guided by the flow guiding unit and flows into the corresponding water collection tanks 9 inside the water receiving tank 2. As the condensate gradually accumulates in each water collection tank 9, the operator can directly observe the liquid level in each tank 9 through a transparent window located on the outside of the water receiving tank 2 and read the liquid level changes using the scale 13.

[0027] Since the transparent windows are each corresponding to a water collection tank 9, the amount of condensate collected in different plate areas or different zones can be observed separately. By comparing the liquid level at each transparent window, the differences in condensate accumulation in different water collection tanks 9 can be determined, thereby indirectly reflecting the condensation state of different plate areas of the plate heat exchanger 3. Furthermore, by combining the temperature information of the corresponding monitoring area detected by the temperature sensor 16, the heat exchange status, condensation trend, and operational uniformity of different plate areas can also be analyzed.

[0028] See Figure 2 As shown, the bottom of the partition plate is provided with several connecting channels 10, each connecting channel 10 is connected to the water collection tanks 9 on both sides, and each connecting channel 10 is provided with a solenoid valve 15. The bottom side of the water receiving tank 2 is provided with several drain ports 11 that are connected to the corresponding water collection tank 9, and the ends of the multiple drain ports 11 are connected to the same manifold 12.

[0029] The condensate formed on the surface of the plates inside the plate heat exchanger 3 is guided by the flow guiding unit and then enters the corresponding water collection tank 9 for independent collection. Under normal monitoring conditions, the solenoid valves 15 in each connecting channel 10 can be closed, so that each water collection tank 9 remains independent of each other, thereby facilitating the observation and comparison of the condensate accumulation in different plate areas.

[0030] When it is necessary to uniformly discharge the condensate from multiple water collection tanks 9, or to level and drain a local water collection tank 9, the solenoid valve 15 in the corresponding connecting channel 10 can be opened. After opening, the water collection tanks 9 on both sides of the partition plate, which were originally independent, are connected through the connecting channel 10. The condensate can flow under the action of the liquid level difference, so as to achieve water balance between the water collection tanks 9 or to drain to the designated discharge side.

[0031] When the condensate in each collection tank 9 accumulates to a predetermined level, it can be drained through the corresponding drain port 11 and finally flow into the manifold 12 for centralized discharge. Since multiple drain ports 11 share the same manifold 12, the number of drainage pipes can be reduced, and the bottom drainage structure can be simplified.

[0032] When the liquid level in a certain collection tank 9 rises abnormally, each collection tank 9 is kept independent to observe the abnormal area; then, the corresponding solenoid valve 15 is selectively opened for drainage. This facilitates the detection of potential problems such as excessive condensation, poor flow, or poor drainage in localized areas, and also helps to narrow down the scope of troubleshooting.

[0033] See Figure 1 and Figure 4 As shown, both ends of one side surface of the pressure equalization channel 7 are provided with return air pipes 18 connected to the corresponding outlet 5, and a baffle plate is provided in the middle of the inner cavity of the pressure equalization channel 7. Both sides of the baffle plate are provided with flow equalization plates 19. The other side surface of the pressure equalization channel 7 is provided with two branch interfaces 8, and each branch interface 8 is connected to the corresponding flow equalization plate 19 in the pressure equalization channel 7. The end of the connector 8 is connected to a cold air return pipe that faces the heat-generating area of ​​the equipment in the computer room. The cold air return pipe and the hot air inlet pipe 6 are not connected to the same installation path.

[0034] The flow equalization plate 19 rectifies and evenly distributes the cooling airflow entering the pressure equalization channel 7, making the cold air output at the two branch interfaces 8 more uniform and stable before the airflow enters the subsequent branch interfaces 8, reducing the air supply difference between different output paths. The cooled air after heat exchange can therefore be directionally delivered to the heat-generating area or air intake area of ​​the equipment in the computer room for targeted cooling of the heat-generating equipment. The cooled air supply path is separated from the high-temperature return air path, avoiding the cold air being prematurely drawn back by the hot air intake pipe 6 as soon as it is delivered, reducing the short-circuiting phenomenon of hot and cold airflow, and allowing the cold air to preferentially pass through the equipment area to absorb heat before being recovered, thereby improving the utilization rate of cold air and the overall heat exchange efficiency.

[0035] See Figure 4 and Figure 5 As shown, the surface of the flow equalization plate 19 is provided with a number of flow equalization holes 24, and the inner cavity of the flow equalization plate 19 is provided with a slot extending to the edge. A plug-in plate 22 is slidably installed in the slot. The surface of the plug-in plate 22 is provided with a number of through holes 25, and the through holes 25 are matched with the corresponding flow equalization holes 24. One side surface of the equalizing channel 7 is provided with a channel for the corresponding plug-in plate 22 to pass through, and a sealing frame 20 for sealing the outer wall of the plug-in plate 22 is installed on the outside of each channel. The sealing frame 20 reduces leakage of cooling airflow from the channel inside the pressure equalization channel 7, ensuring the airtightness of the pressure equalization channel 7. An extension plate is fixed to the end of the plug-in plate 22, and an electromagnet 21 is installed on the surface of the equalizing channel 7. The pushing end of the electromagnet 21 is fixed to the extension plate.

[0036] When the cooling airflow reaches the flow equalization plate 19, it needs to pass through the flow equalization hole 24 before entering the branch interface 8 and being delivered to the cold air return pipe. When the plug plate 22 slides, the through hole 25 is aligned with the flow equalization hole 24 on the flow equalization plate 19. At this time, the cooling airflow passes through the flow equalization plate 19 over a larger area, the airflow resistance is small, and the airflow volume of the branch corresponding to the branch interface 8 is large.

[0037] When the plug plate 22 slides again, the through hole 25 and the flow equalization hole 24 are partially misaligned, the actual flow area of ​​the flow equalization plate 19 decreases, the resistance of the cooling airflow increases, and thus the airflow rate of this path decreases. Next, as the plug plate 22 slides, the misalignment between the through hole 25 and the flow equalization hole 24 increases, and they are blocked by the plug plate 22, reducing the effective flow area through the flow equalization plate 19 and thus limiting the cooling airflow. During this process, by controlling the electromagnet 21 to move the extension plate, the plug plate 22 slides along the slot direction, thereby automatically adjusting the position of the plug plate 22 and switching between the alignment, misalignment, or blocking states of the through hole 25 and the flow equalization hole 24. According to the load changes of different heat-generating areas in the computer room, the position of the plug plate 22 in different flow equalization plates 19 is controlled to change the air supply volume of the corresponding branch interface 8, thereby achieving on-demand air supply to different heat-generating areas.

[0038] In use, this invention, by setting a flow guiding unit, allows water vapor in the air to condense on the plate surface to form condensate. After flowing down through the strip notch on the horizontal plate 26, it is guided by the flow guiding plate 17 and directed into the corresponding water collection tank 9. This achieves directional collection of condensate from each plate, preventing disorderly dripping and splashing of condensate at the bottom. Condensate from different areas and plates is collected in sections. During this process, the temperature sensor 16 detects the temperature change in the area below the corresponding plate, obtaining the heat exchange status information of different plate areas of the plate heat exchanger 3. Combined with the condensate collection situation in each water collection tank 9, the actual operating status of different plate areas is analyzed, providing a basis for subsequent operation adjustment, fault diagnosis and maintenance. By comparing the liquid level height of each transparent window with the scale line 13, the difference in condensate accumulation in different water collection tanks 9 is judged, thereby indirectly reflecting the condensation state of different plate areas of the plate heat exchanger 3. The solenoid valve 15 in the corresponding connecting channel 10 is controlled to open, and the water collection tanks 9 on both sides of the partition plate, which were originally independent, are connected through the connecting channel 10. The condensate can flow under the action of the liquid level difference, so as to achieve water balance between the water collection tanks 9 or guide it to the designated discharge side. Based on the load changes in different heat-generating areas of the computer room, the sliding distance of the plug-in plate 22 inside the different flow equalization plates 19 is controlled respectively. When the through hole 25 is aligned with the flow equalization hole 24 on the flow equalization plate 19, the cooling airflow passes through the flow equalization plate 19 over a larger area, the airflow resistance is small, and the air supply volume of the corresponding branch of the interface 8 is large. When there is a partial misalignment between the through hole 25 and the flow equalization hole 24, the actual flow area of ​​the flow equalization plate 19 is reduced, which reduces the airflow of the path and changes the air supply volume of the corresponding branch of the interface 8, so as to realize on-demand air supply to different heat-generating areas.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-efficiency heat exchange device for a thermal control room in rail transit, comprising a base (1), characterized in that: At least one plate heat exchanger (3) is installed on the top end of the base (1), and the bottom of the plate heat exchanger (3) is provided with a water receiving trough (2) for directional collection of condensate from the corresponding plates. The water receiving trough (2) is provided with a partition plate inside, and several water collection troughs (9) are provided on both sides of the partition plate. The top of the water receiving tank (2) is provided with a flow guiding unit installed at the bottom of the corresponding plate heat exchanger (3) and guiding the condensate. The flow guiding unit includes a horizontal plate (26) that contacts the inner plate of the plate heat exchanger (3). The surface of the horizontal plate (26) is provided with several strip-shaped slots for condensate to pass through, and the lower surface of the horizontal plate (26) is provided with supporting vertical plates (14) adjacent to the inner side of the strip-shaped slots. The ends of several supporting vertical plates (14) are fixed to the upper end face of the water receiving bottom tank (2). Several support vertical plates (14) have guide plates (17) on both sides of their bottom to guide the condensate on the electrode plates into the corresponding water collection tank (9). A monitoring area for detecting the temperature below the plate is formed between two adjacent support vertical plates (14), and a temperature sensor (16) is installed in the monitoring area. The plate heat exchanger (3) has four outlets (5) on its surface. A hot air inlet pipe (6) is connected to one of the upper outlets (5). A pressure equalization channel (7) is provided above the hot air inlet pipe (6) and is connected to another outlet (5) at the top. A condenser inlet pipe (4) is connected to one of the lower outlets (5). The end of the condenser inlet pipe (4) is connected to an external cold air pipe through an induced draft fan.

2. The high-efficiency heat exchange device for a thermal control room in rail transit according to claim 1, characterized in that, The water receiving tank (2) has several transparent windows on both sides, and scale lines (13) for monitoring the liquid level in the corresponding water collection tank (9) are installed in the transparent windows.

3. The high-efficiency heat exchange device for a thermal control room in rail transit according to claim 1, characterized in that, The bottom of the partition plate is provided with several connecting channels (10), each connecting channel (10) is connected to the water collection tanks (9) on both sides, and each connecting channel (10) is provided with a solenoid valve (15).

4. A high-efficiency heat exchange device for a thermal control room in rail transit according to claim 1, characterized in that, The bottom side of the water receiving trough (2) is provided with several drain ports (11) that are connected to the corresponding water collection trough (9), and the ends of the multiple drain ports (11) are connected to the same manifold (12).

5. A high-efficiency heat exchange device for a thermal control room in rail transit according to claim 1, characterized in that, The equalizing channel (7) has return air pipes (18) connected to the corresponding outlet (5) at both ends of one side surface. The equalizing channel (7) has a baffle plate in the middle of the inner cavity and flow equalizing plates (19) on both sides of the baffle plate. The equalizing channel (7) has two branch interfaces (8) on the other side surface. Each branch interface (8) is connected to the corresponding flow equalizing plate (19) in the equalizing channel (7).

6. A high-efficiency heat exchange device for a thermal control room in rail transit according to claim 5, characterized in that, The end of the sub-interface (8) is connected to a cold air return pipe facing the heat generation area of ​​the equipment in the computer room. The cold air return pipe and the hot air inlet pipe (6) are not connected to the same installation path.

7. A high-efficiency heat exchange device for a thermal control room in rail transit according to claim 5, characterized in that, The surface of the flow equalization plate (19) is provided with a number of flow equalization holes (24), and the inner cavity of the flow equalization plate (19) is provided with a slot extending to the edge. A plug-in plate (22) is slidably installed in the slot. The surface of the plug-in plate (22) is provided with a number of through holes (25), and the through holes (25) are matched with the corresponding flow equalization holes (24).

8. A high-efficiency heat exchange device for a thermal control room in rail transit according to claim 7, characterized in that, The pressure equalization channel (7) has a channel on one side surface for the corresponding plug-in plate (22) to pass through, and a sealing frame (20) for sealing the outer wall of the plug-in plate (22) is installed on the outside of each channel. An extension plate is fixed to the end of the plug-in plate (22), and an electromagnet (21) is installed on the surface of the equalizing channel (7). The pushing end of the electromagnet (21) is fixed to the extension plate.

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