CN215121650U - Underground works heat extraction temperature control system that airs exhaust - Google Patents
Underground works heat extraction temperature control system that airs exhaust Download PDFInfo
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- CN215121650U CN215121650U CN202120509797.3U CN202120509797U CN215121650U CN 215121650 U CN215121650 U CN 215121650U CN 202120509797 U CN202120509797 U CN 202120509797U CN 215121650 U CN215121650 U CN 215121650U
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Abstract
The utility model discloses an underground engineering heat extraction and air exhaust temperature control system, which comprises a heat dissipation device and a temperature adjustment reservoir, wherein the heat dissipation device is connected with a cooling tower for the heat dissipation device, and the cooling tower for the heat dissipation device provides cooling water for the heat dissipation device; the gas outlet of the cooling tower for the heat dissipation equipment is connected with the first heat exchanger, and the first heat exchanger can cool high-temperature gas discharged by the cooling tower for the heat dissipation equipment and then discharge the high-temperature gas out of a project; the two sides of the temperature-regulating reservoir are respectively a low-temperature layer and a high-temperature layer, the first heat exchanger is connected with the low-temperature layer of the temperature-regulating reservoir, and the temperature-regulating reservoir provides cooling water guarantee for the first heat exchanger; the temperature-adjusting reservoir is connected with the second heat exchanger, the second heat exchanger is connected with the cooling tower for heat extraction, and the cooling tower for heat extraction cools hot water in the high-temperature layer of the temperature-adjusting reservoir through the second heat exchanger to prepare cold water to be stored in the low-temperature layer of the temperature-adjusting reservoir. The utility model discloses utilize the reservoir that adjusts the temperature as middle storage link to realize relatively independent with heat radiation equipment heat extraction process and refrigeration process.
Description
Technical Field
The utility model relates to an underground works heat extraction accuse temperature field especially relates to underground works heat extraction temperature control system that airs exhaust
Background
The underground engineering has a great territory, rich geological types and complex conditions in China, so that the underground engineering plays an important role in the field of engineering and construction in China and is widely applied to the fields of railways, water conservancy, mining industry, military, highways, subways, submarine tunnels, houses and the like.
The underground engineering heat dissipation equipment can generate a large amount of heat during operation and needs to dissipate the heat outwards, the existing common treatment method is to use water stored in an internal reservoir to carry out sensible heat exchange and temperature reduction, the water temperature is increased after heat exchange and is directly discharged, and the consumption of cooling water is very large. Some projects begin to utilize cooling towers to circularly cool heat dissipation equipment, the cooling water consumption is only tower evaporation, and is greatly reduced compared with a reservoir sensible heat cooling mode, but the cooling towers have high air outlet temperature during working, the air outlet temperature and outdoor temperature difference are large, infrared signs are obvious, a large amount of water vapor and other 'white smoke' phenomena are easily generated outside, and the aim of hidden emission cannot be achieved for military construction.
SUMMERY OF THE UTILITY MODEL
The utility model provides an underground works heat extraction temperature control system that airs exhaust utilizes heat-dissipating equipment heat extraction process and refrigeration process reservoir that adjusts temperature as middle storage link to realize relatively independent, according to outdoor operating mode, selects the period of heat extraction in a flexible way, satisfies the requirement of each device air exhaust temperature and the outdoor difference in temperature in the system. The specific technical scheme is as follows:
a temperature control system for heat extraction and air exhaust of underground engineering comprises heat dissipation equipment and a temperature regulation reservoir, wherein the heat dissipation equipment is connected with a cooling tower for the heat dissipation equipment, and the cooling tower for the heat dissipation equipment provides cooling water for the heat dissipation equipment; the gas outlet of the cooling tower for the heat dissipation equipment is connected with the first heat exchanger, and the first heat exchanger can cool high-temperature gas discharged by the cooling tower for the heat dissipation equipment and then discharge the high-temperature gas out of a project; the two sides of the temperature-regulating reservoir are respectively a low-temperature layer and a high-temperature layer, the first heat exchanger is connected with the low-temperature layer of the temperature-regulating reservoir, and the temperature-regulating reservoir provides cooling water guarantee for the first heat exchanger; the temperature-adjusting reservoir is connected with the second heat exchanger, the second heat exchanger is connected with the cooling tower for heat extraction, and the cooling tower for heat extraction cools hot water in the high-temperature layer of the temperature-adjusting reservoir through the second heat exchanger to prepare cold water to be stored in the low-temperature layer of the temperature-adjusting reservoir.
Further, a water inlet of the cooling tower for the heat dissipation equipment is connected with a water outlet of cooling water of the heat dissipation equipment, and a cold water outlet of the cooling tower for the heat dissipation equipment is connected with a cooling water inlet of the heat dissipation equipment so as to realize heat exchange circulation of the cooling water of the heat dissipation equipment; the air exhaust in the engineering enters through the air inlet of the cooling tower for the heat dissipation equipment and is exhausted from the air outlet of the cooling tower for the heat dissipation equipment to the first radiator.
Further, the cooling tower for the heat dissipation equipment is connected with the first water replenishing pipeline, the first water replenishing pipeline is connected with the low-temperature layer of the temperature-adjusting reservoir, a ball float valve is arranged in the cooling tower for the heat dissipation equipment, and the ball float valve floats up and down along with the liquid level of water in the cooling tower for the heat dissipation equipment, so that the first water replenishing pipeline is controlled to be opened and closed.
Further, the first heat exchanger is an air-water shell-and-tube heat exchanger, a cooling water inlet of the first heat exchanger is connected with the low-temperature layer of the temperature-adjusting reservoir, and a cooling water outlet of the first heat exchanger is connected with the high-temperature layer of the temperature-adjusting reservoir.
Furthermore, the second heat exchanger is a water-water plate type heat exchanger, a water inlet of the cooling tower for heat extraction is connected with a cooling water outlet of the second heat exchanger, a cold water outlet of the cooling tower for heat extraction is connected with a cooling water inlet of the second heat exchanger, a high-temperature water inlet of the second heat exchanger is connected with a high-temperature layer of the temperature-adjusting reservoir, a low-temperature water outlet of the second heat exchanger is connected with a low-temperature layer of the temperature-adjusting reservoir, and outdoor fresh air enters through an air inlet of the cooling tower for heat extraction and is discharged out of the engineering from an air outlet of the cooling tower for heat extraction.
Further, the cooling tower for heat removal is connected with a second water replenishing pipeline, the second water replenishing pipeline is connected with a high-temperature layer of the temperature-adjusting reservoir, a ball float valve is arranged in the cooling tower for heat removal, and the ball float valve floats up and down along with the liquid level of water in the cooling tower for heat removal, so that the opening and closing of the second water replenishing pipeline are controlled.
Further, an inlet of cooling water of the first heat exchanger is connected with a low-temperature layer of the temperature-regulating reservoir through a water inlet pipe of the first heat exchanger; the high-temperature water inlet of the second heat exchanger is connected with the high-temperature layer of the temperature-regulating reservoir through a water inlet pipe of the second heat exchanger; the cold water outlet of the cooling tower for the heat dissipation equipment is connected with the cooling water inlet of the heat dissipation equipment through a cooling tower water outlet pipe for the heat dissipation equipment; the cold water outlet of the cooling tower for heat extraction is connected with the cooling water inlet of the second heat exchanger through a water outlet pipe of the cooling tower for heat extraction; and the first heat exchanger water inlet pipe, the second heat exchanger water inlet pipe, the cooling tower water outlet pipe for the heat dissipation equipment and the cooling tower water outlet pipe for heat dissipation are all provided with a water pump, a valve and a sensor.
And the PLC control cabinet is electrically connected with the second heat exchanger water inlet pipe, the cooling tower water outlet pipe for the heat dissipation equipment and each water pump, valve and sensor on the cooling tower water outlet pipe for heat dissipation.
Furthermore, the temperature-regulating reservoir is of a layered structure, the layers are communicated with one another, one side far away from the equipment is a high-temperature layer, and one side close to the equipment is a low-temperature layer.
Furthermore, a temperature-gradient layer is arranged between the high-temperature layer and the low-temperature layer of the temperature-regulating reservoir, and the number of the temperature-gradient layer is at least one.
The utility model discloses structural design is ingenious, utilizes the reservoir that adjusts the temperature as middle storage link to realize relatively independent with heat-radiating equipment heat extraction process (also reservoir heat accumulation process) and refrigeration process (reservoir heat extraction process), and the outdoor favourable meteorological condition operation of optional is discharged heat and is used the cooling tower to the assurance system is aired exhaust less with the outdoor difference in temperature, and then can be according to outdoor operating mode, selects the period of reservoir heat extraction in a flexible way, satisfies the requirement of each device air exhaust temperature in the system and the outdoor difference in temperature. The air exhaust parameters of each cooling tower can be adjusted at will, and the spraying temperature can be controlled by changing the water flow, so that the air exhaust state is controlled, and the temperature control function of the cooling tower and the system is realized. The mode of latent heat evaporation of the cooling tower is adopted to provide cooling water, and the consumption of the cooling water is reduced by 98-99% compared with the consumption of a conventional internal water direct spraying mode. In addition, the PLC can sense the fluctuation of cooling water temperature caused by the change of the operating power of heat dissipation equipment or the inlet air temperature of the cooling tower in real time according to a pressure (temperature) sensor of the pump set, and the temperature difference between the exhaust air of each cooling tower and the outdoor air temperature meets the design requirement by changing the water quantity and the water temperature of a cooling water system.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is the utility model discloses a connection principle schematic diagram of underground works heat extraction temperature control system that airs exhaust.
Detailed Description
In order to better understand the purpose, function and specific design scheme of the present invention, the following description is made in detail with reference to the accompanying drawings.
As shown in fig. 1, the heat extraction and exhaust temperature control system for underground engineering of the utility model comprises a heat dissipation device 4 and a temperature regulation reservoir 1, wherein the heat dissipation device 4 is connected with a cooling tower 3 for the heat dissipation device, and the cooling tower 3 for the heat dissipation device provides cooling water for the heat dissipation device 4; the gas outlet of cooling tower 3 for the heat dissipation equipment links to each other with first heat exchanger 6, and first heat exchanger 6 can cool down then discharge outside the engineering to the high-temperature gas of cooling tower 3 for the heat dissipation equipment exhaust.
The temperature-regulating reservoir 1 is of a layered structure, the layers are mutually communicated, one side (the innermost layer) far away from equipment is a high-temperature layer, one side (the outermost layer) close to the equipment is a low-temperature layer, a thermocline is arranged between the high-temperature layer and the low-temperature layer, the thermocline is at least one layer, and the number of the thermoclines in the embodiment is seven; along with the operation of the system, the innermost layer continuously enters high-temperature hot water, the outermost layer continuously enters low-temperature cold water, and the two temperature layers are gradually subjected to dynamic temperature balance in the temperature-regulating reservoir 1.
The first heat exchanger 6 is connected with a low-temperature layer of the temperature-regulating reservoir 1, and the temperature-regulating reservoir 1 provides cooling water guarantee for the first heat exchanger 6; the temperature-regulating reservoir 1 is connected with a second heat exchanger 5, the second heat exchanger 5 is connected with a cooling tower 2 for heat extraction, and the cooling tower 2 for heat extraction cools hot water in the high-temperature layer of the temperature-regulating reservoir 1 into cold water through the second heat exchanger 5 to be stored in the low-temperature layer of the temperature-regulating reservoir 1.
Specifically, a water inlet of the cooling tower 3 for the heat dissipation device is connected with a water outlet of cooling water of the heat dissipation device 4, and a cold water outlet of the cooling tower 3 for the heat dissipation device is connected with a cooling water inlet of the heat dissipation device 4 to realize heat exchange circulation of the cooling water of the heat dissipation device 4; the exhaust air in the engineering enters through the air inlet of the cooling tower 3 for the heat dissipation equipment and is exhausted out of the engineering from the air outlet of the cooling tower 3 for the heat dissipation equipment.
Preferably, the cooling tower 3 for the heat dissipation equipment is connected with the first water replenishing pipeline, the first water replenishing pipeline is connected with the low-temperature layer of the temperature adjusting reservoir 1, the first ball float valve 11 is arranged in the cooling tower 3 for the heat dissipation equipment, and the first ball float valve 11 floats up and down along with the liquid level of water in the cooling tower 3 for the heat dissipation equipment, so that the first water replenishing pipeline is controlled to be opened and closed, and when the water level in the cooling tower 3 for the heat dissipation equipment is reduced, the temperature adjusting reservoir 1 can replenish water for the cooling tower 3 for the heat dissipation equipment.
The first heat exchanger 6 of the embodiment is an air-water shell-and-tube heat exchanger, a cooling water inlet of the first heat exchanger 6 is connected with a low-temperature layer of the temperature-regulating reservoir 1, a cooling water outlet of the first heat exchanger 6 is connected with a high-temperature layer of the temperature-regulating reservoir 1, and the cooling water of the first heat exchanger 6 exchanges heat with high-temperature gas discharged by the cooling tower 3 for the heat dissipation equipment to form high-temperature water which flows into the high-temperature layer of the temperature-regulating reservoir 1 for storage; high-temperature gas discharged from the cooling tower 3 for the heat dissipation equipment is cooled by the first heat exchanger 6 and then discharged to the outside of the project.
The second heat exchanger 5 of this embodiment is a water-water plate heat exchanger, the water inlet of the cooling tower 2 for heat extraction is connected with the cooling water outlet of the second heat exchanger 5, the cold water outlet of the cooling tower 2 for heat extraction is connected with the cooling water inlet of the second heat exchanger 5, the high-temperature water inlet of the second heat exchanger 5 is connected with the high-temperature layer of the temperature-adjusting reservoir 1, the low-temperature water outlet of the second heat exchanger 5 is connected with the low-temperature layer of the temperature-adjusting reservoir 1, and outdoor fresh air enters through the air inlet of the cooling tower 2 for heat extraction and is discharged out of the project from the air outlet of the cooling tower 2 for heat extraction.
Preferably, cooling tower 2 for the heat extraction links to each other with second moisturizing pipeline, and second moisturizing pipeline links to each other with the high temperature layer of reservoir 1 that adjusts the temperature, is provided with second ball-cock assembly 12 in the cooling tower 2 for the heat extraction, and second ball-cock assembly 12 floats from top to bottom along with the liquid level of cooling tower 2 internal water for the heat extraction to control opening and closing of second moisturizing pipeline, when reducing with the water level in the cooling tower 2 for the heat extraction in order to realize, reservoir 1 that adjusts the temperature can carry out the moisturizing for cooling tower 2 for the heat extraction.
It is worth noting that the inlet of the cooling water of the first heat exchanger 6 of the present embodiment is connected with the low-temperature layer of the temperature-regulating reservoir 1 through the first heat exchanger water inlet pipe; a high-temperature water inlet of the second heat exchanger 5 is connected with a high-temperature layer of the temperature-regulating reservoir 1 through a second heat exchanger water inlet pipe; the cold water outlet of the cooling tower 3 for the heat dissipation equipment is connected with the cooling water inlet of the heat dissipation equipment 4 through the water outlet pipe of the cooling tower 3 for the heat dissipation equipment; a cold water outlet of the cooling tower 2 for heat removal is connected with a cooling water inlet of the second heat exchanger 5 through a water outlet pipe of the cooling tower 2 for heat removal; and a water pump 7, a valve 8 and a sensor 9 which are electrically connected with the PLC control cabinet are arranged on the first heat exchanger water inlet pipe, the second heat exchanger water inlet pipe, the cooling tower water outlet pipe for the heat dissipation equipment and the cooling tower water outlet pipe for heat dissipation, and the sensor 9 is a pressure (temperature) sensor. The water pump 7 provides power for water in the pipeline, the valve 8 can control the opening and closing of the pipeline and the flow of the water in the pipeline, and the sensor 9 can detect the pressure and the temperature of the water in the pipeline.
The cooling tower 3 for heat dissipation equipment and the cooling tower 2 for heat removal in this embodiment are both down-draft centrifugal cooling towers, and the operating principle thereof is that cool air outside the cooling tower is sent into the tower through a pipeline by means of a fan at the lower part of the cooling tower. The high-temperature water flows into the pipe type water distribution system and is uniformly distributed in each atomizer, high-speed rotating hot water is sprayed out and atomized upwards, and the high-temperature water and cold air entering the tower rise upwards together to exchange heat. The water mist rises to a certain height to form mist drops which naturally fall down and meet the rising cold air to carry out secondary heat exchange. The low-temperature water after heat dissipation and temperature reduction is finally stored at the bottom of the cooling tower and then flows out from a water outlet of the cooling tower. The bottom-blowing centrifugal cooling tower is an existing device, and the specific structure of the bottom-blowing centrifugal cooling tower is not described in detail herein.
The utility model discloses structural design is ingenious, utilizes the reservoir that adjusts the temperature as middle storage link to realize relatively independent with heat-radiating equipment heat extraction process (also reservoir heat accumulation process) and refrigeration process (the reservoir heat extraction process that adjusts the temperature), and the outdoor favourable meteorological condition operation of optional is discharged heat and is used the cooling tower to the assurance system is aired exhaust less with the outdoor difference in temperature, and then can be according to outdoor operating mode, selects the period of reservoir heat extraction in a flexible way, satisfies the requirement of each device air exhaust temperature in the system and the outdoor difference in temperature. The air exhaust parameters of each cooling tower can be adjusted at will, and the spraying temperature can be controlled by changing the water flow, so that the air exhaust state is controlled, and the temperature control function of the cooling tower and the system is realized. The mode of latent heat evaporation of the cooling tower is adopted to provide cooling water, and the consumption of the cooling water is reduced by 98-99% compared with the consumption of a conventional internal water direct spraying mode. In addition, the PLC can sense the cooling water temperature fluctuation caused by the operation power of the heat radiating equipment or the change of the inlet air temperature of the cooling tower in real time according to the pressure (temperature) sensor of the pump set, and the temperature difference between the exhaust air of each cooling tower and the outdoor air temperature meets the design requirement by changing the water quantity and the water temperature of a cooling water system.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A temperature control system for heat extraction and air exhaust of underground engineering is characterized by comprising heat dissipation equipment and a temperature-regulating reservoir, wherein the heat dissipation equipment is connected with a cooling tower for the heat dissipation equipment; the gas outlet of the cooling tower for the heat dissipation equipment is connected with the first heat exchanger, and the first heat exchanger can cool high-temperature gas discharged by the cooling tower for the heat dissipation equipment and then discharge the high-temperature gas out of a project; the two sides of the temperature-regulating reservoir are respectively a low-temperature layer and a high-temperature layer, the first heat exchanger is connected with the low-temperature layer of the temperature-regulating reservoir, and the temperature-regulating reservoir provides cooling water guarantee for the first heat exchanger; the temperature-adjusting reservoir is connected with the second heat exchanger, the second heat exchanger is connected with the cooling tower for heat extraction, and the cooling tower for heat extraction cools hot water in the high-temperature layer of the temperature-adjusting reservoir through the second heat exchanger to prepare cold water to be stored in the low-temperature layer of the temperature-adjusting reservoir.
2. The system for controlling the temperature of discharged heat and air in underground works according to claim 1, wherein the water inlet of the cooling tower for the heat sink is connected to the water outlet of the cooling water of the heat sink, and the cold water outlet of the cooling tower for the heat sink is connected to the water inlet of the cooling water of the heat sink to realize the heat exchange cycle of the cooling water of the heat sink; the air exhaust in the engineering enters through the air inlet of the cooling tower for the heat dissipation equipment and is exhausted from the air outlet of the cooling tower for the heat dissipation equipment to the first radiator.
3. The system for controlling the temperature of discharged heat and air in underground works according to claim 2, wherein the cooling tower for heat dissipating equipment is connected to the first water supply line, the first water supply line is connected to the low temperature layer of the temperature regulating reservoir, and a ball float valve is provided in the cooling tower for heat dissipating equipment, and the ball float valve floats up and down following the liquid level of the water in the cooling tower for heat dissipating equipment, thereby controlling the opening and closing of the first water supply line.
4. The system for controlling the temperature of exhaust heat and exhaust air in underground works according to claim 2, wherein the first heat exchanger is an air-water shell-and-tube heat exchanger, the cooling water inlet of the first heat exchanger is connected to the low temperature layer of the temperature-regulated reservoir, and the cooling water outlet of the first heat exchanger is connected to the high temperature layer of the temperature-regulated reservoir.
5. The system of claim 4, wherein the second heat exchanger is a water-water plate heat exchanger, the water inlet of the heat-extraction cooling tower is connected to the cooling water outlet of the second heat exchanger, the cold water outlet of the heat-extraction cooling tower is connected to the cooling water inlet of the second heat exchanger, the high-temperature water inlet of the second heat exchanger is connected to the high-temperature layer of the temperature-regulating reservoir, the low-temperature water outlet of the second heat exchanger is connected to the low-temperature layer of the temperature-regulating reservoir, and outdoor fresh air enters through the air inlet of the heat-extraction cooling tower and is exhausted from the air outlet of the heat-extraction cooling tower to the outside of the project.
6. The system for controlling the temperature of discharged heat and air in underground works according to claim 5, wherein the cooling tower for discharged heat is connected to a second water supply pipeline connected to the high temperature layer of the temperature-controlled reservoir, and a ball float valve is provided in the cooling tower for discharged heat to float up and down along with the liquid level of the water in the cooling tower for discharged heat, thereby controlling the opening and closing of the second water supply pipeline.
7. The system for controlling the temperature of exhaust heat and air in underground engineering according to claim 6, wherein the inlet of the cooling water of the first heat exchanger is connected with the low-temperature layer of the temperature-regulating reservoir through the inlet pipe of the first heat exchanger; the high-temperature water inlet of the second heat exchanger is connected with the high-temperature layer of the temperature-regulating reservoir through a water inlet pipe of the second heat exchanger; the cold water outlet of the cooling tower for the heat dissipation equipment is connected with the cooling water inlet of the heat dissipation equipment through a cooling tower water outlet pipe for the heat dissipation equipment; the cold water outlet of the cooling tower for heat extraction is connected with the cooling water inlet of the second heat exchanger through a water outlet pipe of the cooling tower for heat extraction; and the first heat exchanger water inlet pipe, the second heat exchanger water inlet pipe, the cooling tower water outlet pipe for the heat dissipation equipment and the cooling tower water outlet pipe for heat dissipation are all provided with a water pump, a valve and a sensor.
8. The system of claim 7, further comprising a PLC control cabinet electrically connected to the second heat exchanger inlet pipe, the cooling tower outlet pipe for the heat sink device, and the respective pumps, valves, and sensors on the cooling tower outlet pipe for heat removal.
9. The system for controlling the temperature of discharged heat and air in underground works according to claim 1, wherein the temperature-regulating reservoir is a layered structure, the layers are communicated with each other, the side far away from the equipment is a high-temperature layer, and the side near the equipment is a low-temperature layer.
10. The system for controlling the temperature of exhaust heat and exhaust air in underground engineering according to claim 9, wherein a thermocline is arranged between the high-temperature layer and the low-temperature layer of the thermoregulation reservoir, and the number of the thermocline is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120509797.3U CN215121650U (en) | 2021-03-10 | 2021-03-10 | Underground works heat extraction temperature control system that airs exhaust |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120509797.3U CN215121650U (en) | 2021-03-10 | 2021-03-10 | Underground works heat extraction temperature control system that airs exhaust |
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| CN215121650U true CN215121650U (en) | 2021-12-10 |
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| CN202120509797.3U Active CN215121650U (en) | 2021-03-10 | 2021-03-10 | Underground works heat extraction temperature control system that airs exhaust |
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- 2021-03-10 CN CN202120509797.3U patent/CN215121650U/en active Active
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