Cooling device and method for multi-level construction period of high-ground-temperature deep well

Abstract

The invention relates to the technical field of tunnel ventilation cooling, in particular to a high-ground-temperature deep well multilevel construction period cooling device and method.A plurality of horizontal branch tunnels are formed below the horizontal ground, a hot-pressing conversion chamber is formed in each horizontal branch tunnel, and a water chilling unit for conveying cooling water is arranged on the horizontal ground; a ground cold water tank for storing ice water is arranged on one side of the water chilling unit, a cooling water supply pipeline and a cooling water return pipeline are arranged on the other side of the water chilling unit, the liquid inlet end of the ground cold water tank is communicated with the water chilling unit, and a chilled water pump for conveying the ice water is arranged at the liquid outlet end of the ground cold water tank. By arranging the hot-pressing conversion mechanism and the hot-pressing conversion chamber, the horizontal branch tunnels with different depths can be divided into a plurality of independent secondary systems, hydraulic balance of the secondary side is achieved, damage to refrigeration equipment in a roadway due to unstable water pressure can be effectively reduced, the cooling performance is stable, and the cooling effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel ventilation and cooling, and particularly to a cooling device and method for deep high-geothermal multi-level construction period. Background Art

[0002] When tunneling in high-geothermal (original rock temperature greater than 37°C) multi-level (there is a large height difference between different driving faces) tunnels, due to the high rock temperature, it will not only cause frequent failures of electromechanical equipment, but also workers cannot produce normally, and the production efficiency is very low. Therefore, in order to ensure normal production and the physical health of workers, cooling measures must be taken in high-geothermal tunnels.

[0003] In the prior art, most of the high-geothermal tunnels are cooled by centralized cooling. Generally, a refrigeration station is set at the tunnel entrance, and then cold water is transported to the air coolers in each driving roadway through a circulating water pipeline for heat exchange. However, due to the large height difference between each working face, the water pressure in the main water supply pipeline is very different from the water pressure in the horizontal branch pipeline, resulting in unbalanced water system flow and pressure. This not only requires very high selection requirements for pipelines and valve accessories, but also easily causes great damage to the air-cooling equipment at the end, greatly increasing the operation risk and investment cost of the project. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a cooling device and method for deep high-geothermal multi-level construction period, which solves the technical problems that the centralized cooling method in the prior art is very easy to damage pipelines and other equipment, resulting in relatively high operation risk and investment cost, and has the advantage of being able to effectively prevent the refrigeration equipment in the horizontal branch tunnel from being damaged due to unstable water pressure.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-geotemperature deep well multi-level construction period cooling device, comprising a horizontal ground, a plurality of horizontal branch tunnels are opened below the horizontal ground, a heat-pressure conversion chamber is opened inside each horizontal branch tunnel, a chiller for conveying cooling water is arranged on the horizontal ground, a ground cold water tank for storing ice water is arranged on one side of the chiller, a cooling water supply pipeline and a cooling water return pipeline are arranged on the other side of the chiller, the liquid inlet end of the ground cold water tank is connected to the chiller, the liquid outlet end of the ground cold water tank is provided with a chilled water pump for conveying ice water, the chilled water pump is connected with a chilled water supply pipeline, and the device is operated during During the process, the ice water generated by the refrigeration station will enter the ground cold water tank through the cooling water supply pipeline and the chiller. Subsequently, the ice water in the ground cold water tank will enter the interior of the chilled water supply pipeline under the action of the chilled water pump. The interior of the heat-pressure conversion chamber is provided with a heat-pressure conversion mechanism and an underground cold water pump. The interior of the horizontal branch tunnel is detachably installed with an air cooler. The lower end of the heat-pressure conversion mechanism is provided with a shell support mechanism. The chilled water supply pipeline is provided with a flow regulating mechanism. The heat-pressure conversion mechanism includes an installation shell, one side of the installation shell is provided with a high-pressure side pipeline, the other side of the installation shell is provided with a low-pressure side pipeline, and a heat conduction component is provided between the high-pressure side pipeline and the low-pressure side pipeline. The heat conduction component can quickly conduct the heat in the low-pressure side pipeline to the interior of the high-pressure side pipeline, thereby realizing heat exchange.

[0006] Preferably, the chilled water supply pipeline is connected to one end of the high-pressure side pipeline, and the other end of the high-pressure side pipeline is connected to the chilled water return pipeline, and the chilled water return pipeline is connected to the chiller. After the ice water enters the interior of the high-pressure side pipeline through the chilled water supply pipeline, it will return to the interior of the cooling water return pipeline through the chilled water return pipeline and the chiller, thereby realizing the circulation of high-pressure chilled water.

[0007] Preferably, a copper elbow is provided inside the air cooler, one end of the copper elbow is connected to a circulating water supply pipeline, and the other end of the copper elbow is connected to a circulating water return pipeline. A downhole cold water pump is provided on the circulating water return pipeline. The circulating water supply pipeline and the circulating water return pipeline are respectively connected to the two ends of the low-pressure side pipeline. There is low-temperature water in the copper elbow and air outside the pipe. Through the flow of wind and the flow of water in the pipe, heat exchange occurs to achieve rapid cooling.

[0008] Preferably, the heat-conducting assembly is composed of a plurality of heat-conducting copper tubes, which can quickly conduct the heat in the low-pressure side pipeline to the inside of the high-pressure side pipeline to achieve heat exchange.

[0009] Preferably, fixed screws are symmetrically arranged on both sides of the installation housing. A movable rotary cylinder is threadedly connected to the fixed screw. A connecting round rod is coaxially and movably installed on the movable rotary cylinder. A plastic plate body is fixedly installed on the connecting round rod. When the staff rotates the movable rotary cylinder, the distance between the plastic plate body and the installation housing will change.

[0010] Preferably, the housing support mechanism includes a plastic base fixedly installed at the lower end of the installation housing. An installation square plate is fixedly installed on the plastic base. A threaded convex column is fixedly installed on the installation square plate. A rotary convex block is movably installed on the threaded convex column. When the rotary convex block is rotated, the bottom of the installation housing can be leveled, so that the installation housing can be kept as horizontal as possible.

[0011] Preferably, the flow rate adjustment mechanism includes a temperature sensor embedded in the plastic plate body. An electromagnetic water valve is arranged on the chilled water supply pipeline. The electromagnetic water valve can automatically adjust the opening degree under the action of the temperature sensor.

[0012] Preferably, a water temperature monitoring mechanism is arranged between the circulating water supply pipeline and the circulating water return pipeline. The water temperature monitoring mechanism includes an alarm. A display screen assembly for displaying the temperature difference is arranged on the alarm. Upper installation sleeves and lower installation sleeves are symmetrically arranged on both sides of the alarm. The upper installation sleeve is fixedly sleeved on the outside of the circulating water supply pipeline. The lower installation sleeve is fixedly sleeved on the outside of the circulating water return pipeline.

[0013] Preferably, temperature measuring probes for measuring the water temperature are arranged inside both the upper installation sleeve and the lower installation sleeve. The two temperature measuring probes are respectively inserted into the circulating water supply pipeline and the circulating water return pipeline.

[0014] Preferably, the cooling method for the multi-level construction period of high geothermal deep wells is as follows: First, use a chilled water pump to pump out the ice water in the ground cold water tank and form a high-pressure chilled water circulation between the chilled water supply pipeline, the high-pressure side pipeline, and the chilled water return pipeline. Then, use an underground chilled water pump to pump out the circulating water in the copper elbow and form a low-pressure water circulation between the circulating water supply pipeline, the low-pressure side pipeline, and the circulating water return pipeline. Subsequently, during the simultaneous progress of the high-pressure chilled water circulation and the low-pressure water circulation, the heat inside the low-pressure side pipeline will be absorbed by the high-pressure side pipeline to achieve heat exchange, thereby reducing the temperature of the circulating water. Finally, the cooled circulating water will return to the inside of the copper elbow through the circulating water return pipeline, thereby cooling the inside of the horizontal branch tunnel.

[0015] By means of the above technical solution, the present invention provides a cooling device for the multi-level construction period of high geothermal deep wells, which at least has the following beneficial effects:

[0016] 1. By setting up a hot-press conversion mechanism and a hot-press conversion chamber, the present invention can divide horizontal branch tunnels at different depths into multiple independent secondary systems, achieving hydraulic balance on the secondary side. It can effectively reduce the damage to refrigeration equipment in the roadway caused by unstable water pressure, with stable cooling performance and good cooling effect.

[0017] 2. By setting up a hot-press conversion mechanism and an air cooler, all terminal devices, valves, and pipelines are connected to the hot-press conversion mechanism at the same height, which can significantly reduce the pressure-bearing and material requirements of a part of the pipelines and accessories, effectively reduce the high water pressure safety risk underground, and extend the service life of the underground water supply pipelines.

[0018] 3. By setting up a housing support mechanism and using the mutual cooperation between the installation square plate and the rotating convex block, it can be quickly leveled according to different chamber environments, ensuring that the installation housing can be in a horizontal state, effectively improving the firmness and sealing performance of pipeline connections, and having wide applicability.

[0019] 4. By setting up a hot-press conversion mechanism and using the mutual cooperation between the movable rotating cylinder and the plastic plate body, it can automatically support and limit the front and rear sides of the installation housing after the pipeline connection is completed, effectively improving the stability of the installation housing during the hot-press conversion process, reducing equipment jitter, and also improving the sealing performance of pipeline connections.

[0020] 5. By setting up a flow rate adjustment mechanism and using the mutual cooperation between the temperature sensor and the electromagnetic water valve, it can automatically adjust the ice water flow rate in the chilled water supply pipeline according to the actual temperature in the hot-press conversion chamber, thereby realizing the automatic adjustment of refrigeration efficiency, ensuring the refrigeration effect without causing additional waste.

[0021] 6. By setting up a water temperature monitoring mechanism and using the mutual cooperation between the alarm and the display screen assembly, it can monitor the heat exchange efficiency in real time and immediately send an alarm to the staff when problems occur, greatly improving the timeliness of equipment maintenance, effectively preventing the occurrence of accidents, and having high installability.

[0022] 7. By setting up a water temperature monitoring mechanism and using the mutual cooperation between the installation sleeve and the temperature measurement probe, it can help the staff quickly evaluate the heat exchange performance of the hot-press conversion mechanism, effectively improving the efficiency of the staff's inspection, and being convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0024] Figure 1 Schematic diagram of the installation position of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the hot press conversion mechanism in the present invention;

[0026] Figure 3 Cross-sectional view of a part of the hot press conversion mechanism in the present invention;

[0027] Figure 4 Top view of the hot press conversion mechanism in the present invention;

[0028] Figure 5 Schematic diagram of the structure of the housing support mechanism in the present invention;

[0029] Figure 6 Schematic diagram of the structure of the plastic plate body in the present invention;

[0030] Figure 7 Schematic diagram of the structure of the water temperature monitoring mechanism in the present invention;

[0031] Figure 8 Schematic diagram of the structure of the temperature measuring probe in the present invention.

[0032] In the figure: 1, chiller; 2, chilled water pump; 3, ground chilled water tank; 4, hot press conversion mechanism; 401, installation housing; 402, high-pressure side pipeline; 403, low-pressure side pipeline; 404, heat conduction component; 405, fixing screw; 406, movable rotating cylinder; 407, connecting round rod; 408, plastic plate body; 5, underground chilled water pump; 6, air cooler; 7, tunneling face; 8, circulating water supply pipeline; 9, circulating water return pipeline; 10, cooling water supply pipeline; 11, cooling water return pipeline; 12, horizontal ground; 13, horizontal branch tunnel; 14, chilled water supply pipeline; 15, chilled water return pipeline; 16, hot press conversion chamber; 17, housing support mechanism; 1701, plastic base; 1702, installation square plate; 1703, threaded convex column; 1704, rotating convex block; 18, flow rate regulating mechanism; 1801, temperature sensor; 1802, electromagnetic water valve; 19, water temperature monitoring mechanism; 1901, alarm; 1902, display screen assembly; 1903, upper installation sleeve; 1904, lower installation sleeve; 1905, temperature measuring probe. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1

[0035] Most of the existing technologies use centralized cooling to cool down high geothermal tunnels. Due to the large height difference between the working surfaces, the water pressure in the main water pipeline and the water pressure in the horizontal branch pipeline is very different, which can easily lead to imbalance in water system flow and pressure, thereby causing damage to the pipeline and terminal refrigeration equipment. In order to solve this technical problem existing in the existing technology, Figures 1-6 As shown, this embodiment proposes a high-geotemperature deep well multi-level construction period cooling device, which can divide the horizontal branch tunnels 13 of different depths into multiple independent secondary systems, realize the hydraulic balance on the secondary side, and effectively reduce the damage to the refrigeration equipment in the tunnel caused by unstable water pressure. The device is provided with a plurality of horizontal branch tunnels 13 below the horizontal ground 12, and a heat-pressure conversion chamber 16 is provided inside each horizontal branch tunnel 13. A chiller 1 for conveying cooling water is provided on the horizontal ground 12, and a ground for storing ice water is provided on one side of the chiller 1. A surface cold water tank 3 is provided, and a cooling water supply pipeline 10 and a cooling water return pipeline 11 are arranged on the other side of the chiller 1. The liquid inlet end of the ground cold water tank 3 is connected to the chiller 1, and the liquid outlet end of the ground cold water tank 3 is provided with a chilled water pump 2 for conveying ice water, and the chilled water pump 2 is connected to the chilled water supply pipeline 14. During the operation of the device, the ice water generated by the refrigeration station will enter the ground cold water tank 3 through the cooling water supply pipeline 10 and the chiller 1, and then the ice water in the ground cold water tank 3 will enter the interior of the chilled water supply pipeline 14 under the action of the chilled water pump 2.

[0036] In order to improve the stability and effect of temperature reduction as much as possible, a hot press conversion mechanism 4 and an underground cold water pump 5 are arranged inside the hot press conversion chamber 16 in this embodiment. An air cooler 6 is detachably installed inside the horizontal branch tunnel 13. A copper bend is arranged inside the air cooler 6. One end of the copper bend is connected to a circulating water supply pipeline 8, and the other end of the copper bend is connected to a circulating water return pipeline 9. An underground cold water pump 5 is arranged on the circulating water return pipeline 9. The circulating water supply pipeline 8 and the circulating water return pipeline 9 are respectively connected to both ends of the low-pressure side pipeline 403. The water inside the copper bend is at a low temperature, and the outside of the pipe is air. Through the flow of the air current and the flow of the water inside the pipe, heat and cold exchange occurs, realizing rapid temperature reduction. A housing support mechanism 17 is arranged at the lower end of the hot press conversion mechanism 4. A flow regulating mechanism 18 is arranged on the chilled water supply pipeline 14. The hot press conversion mechanism 4 includes an installation housing 401. A high-pressure side pipeline 402 is arranged on one side of the installation housing 401. The chilled water supply pipeline 14 is connected to one end of the high-pressure side pipeline 402. The other end of the high-pressure side pipeline 402 is connected to a chilled water return pipeline 15. The chilled water return pipeline 15 is connected to the chiller unit 1. After the ice water enters the inside of the high-pressure side pipeline 402 through the chilled water supply pipeline 14, it will return to the inside of the cooling water return pipeline 11 through the chilled water return pipeline 15 and the chiller unit 1, thus realizing the circulation of high-pressure chilled water. A low-pressure side pipeline 403 is arranged on the other side of the installation housing 401. A heat conduction component 404 is arranged between the high-pressure side pipeline 402 and the low-pressure side pipeline 403. The heat conduction component 404 is composed of a number of heat conduction copper pipes and can quickly conduct the heat inside the low-pressure side pipeline 403 to the inside of the high-pressure side pipeline 402, realizing heat exchange.

[0037] According to the above content, when using this device to cool a high geothermal tunnel, first, the ice water produced by the ground refrigeration station will enter the chiller unit 1 through the cooling water supply pipeline 10 and enter the ground cold water tank 3 under the action of the chiller unit 1. Next, the ice water inside the ground cold water tank 3 will enter the inside of the high-pressure side pipeline 402 through the chilled water supply pipeline 14 under the action of the chilled water pump 2.

[0038] Subsequently, the water inside the high-pressure side pipeline 402 will return to the chiller unit 1 through the chilled water return pipeline 15 and return to the refrigeration station through the cooling water return pipeline 11 under the action of the chiller unit 1, thus carrying out high-pressure chilled water circulation on one side of the installation housing 401.

[0039] At the same time, the water inside the copper bend will enter the low-pressure side pipeline 403 through the circulating water supply pipeline 8 under the action of the underground cold water pump 5. Subsequently, the circulating water inside the low-pressure side pipeline 403 will return to the inside of the copper bend through the circulating water return pipeline 9, thus carrying out low-pressure water circulation on the other side of the installation housing 401.

[0040] During this process, the high-pressure side pipeline 402 exchanges heat with the low-pressure side pipeline 403, thereby rapidly cooling the circulating water in the copper elbow. Subsequently, the air cooler 6 (similar to the fan coil unit of a ground building central air conditioner, whose basic component is a serpentine copper elbow, with low-temperature water inside the pipe and air outside the pipe, and heat exchange occurs through the flow of air and water inside the pipe) can rapidly cool the interior of the horizontal branch tunnel 13.

[0041] Combined with multiple experiments, the cold water temperature at the inlet of the high-pressure side pipeline 402 is 3.5 - 4.5 °C, and the cold water temperature at the outlet is 15 - 17 °C. The water temperature at the inlet of the low-pressure side pipeline 403 is 14 - 16 °C, and the water temperature at the outlet is 5 - 6 °C. The refrigeration effect is very good.

[0042] In this embodiment, by setting the heat-pressure conversion mechanism 4 and the heat-pressure conversion chamber 16, the horizontal branch tunnels 13 at different depths can be divided into multiple independent secondary systems, achieving the hydraulic balance on the secondary side. It can effectively reduce the damage to the refrigeration equipment in the roadway caused by unstable water pressure, with stable cooling performance and good cooling effect. Moreover, in this embodiment, by setting the heat-pressure conversion mechanism 4 and the air cooler 6, each terminal device, valve, and pipeline are connected to the heat-pressure conversion mechanism 4 at the same height, which can significantly reduce the pressure bearing and material requirements of a part of the pipeline and accessories, effectively reduce the high water pressure safety risk underground, and extend the service life of the underground water pipeline.

[0043] Embodiment Two

[0044] To effectively improve the firmness and sealing performance of pipeline connection, on the basis of Embodiment One, as Figure 1 、 Figure 2 、 Figure 3 and Figure 5 shown, this embodiment sets up a housing support mechanism 17. The housing support mechanism 17 includes a plastic base 1701 fixedly installed at the lower end of the installation housing 401. An installation square plate 1702 is fixedly installed on the plastic base 1701. A threaded convex column 1703 is fixedly installed on the installation square plate 1702. A rotating convex block 1704 is movably installed on the threaded convex column 1703. When rotating the rotating convex block 1704, the bottom of the installation housing 401 can be leveled, so that the installation housing 401 can be kept as horizontal as possible. Fixed screws 405 are symmetrically arranged on both sides of the installation housing 401. A movable rotating cylinder 406 is threadedly connected to the fixed screw 405. A connecting round bar 407 is coaxially and movably installed on the movable rotating cylinder 406. A plastic plate body 408 is fixedly installed on the connecting round bar 407. When the staff rotates the movable rotating cylinder 406, the distance between the plastic plate body 408 and the installation housing 401 will change.

[0045] According to the above, when installing the device, the staff will place the installation housing 401 inside the hot pressing conversion chamber 16, and then rotate a plurality of rotating bumps 1704 in sequence to level the installation square plate 1702.

[0046] Next, the staff will connect the pipelines. After the pipeline connection is completed, the movable rotating cylinder 406 is manually rotated to make the plastic plate body 408 contact the side wall of the hot pressing conversion chamber 16, so as to support and limit the front and rear sides of the installation housing 401, which can effectively improve the stability during the operation of the device.

[0047] Moreover, a plastic base 1701 is provided between the installation square plate 1702 and the installation housing 401, and its thermal conductivity is very poor, which can effectively prevent the heat on the inner wall of the hot pressing conversion chamber 16 from being conducted to the surface of the installation housing 401.

[0048] In this embodiment, by setting the housing support mechanism 17 and using the mutual cooperation between the installation square plate 1702 and the rotating bump 1704, it can be quickly leveled according to different chamber environments, so as to ensure that the installation housing 401 is in a horizontal state, which can effectively improve the firmness and sealing performance of the pipeline connection and has a wide range of applicability; moreover, in this embodiment, by setting the hot pressing conversion mechanism 4 and using the mutual cooperation between the movable rotating cylinder 406 and the plastic plate body 408, it can automatically support and limit the front and rear sides of the installation housing 401 after the pipeline connection is completed, which can effectively improve the stability of the installation housing 401 during the hot pressing conversion process, reduce the device jitter, and also improve the sealing performance of the pipeline connection.

[0049] Embodiment Three

[0050] To prevent excessive cooling from causing waste of resources and at the same time reduce the pressure on the water delivery pipeline, on the basis of the above embodiment, as Figure 2 、 Figure 5 and Figure 6 shown, this embodiment sets a flow rate regulating mechanism 18. Specifically, the flow rate regulating mechanism 18 includes a temperature sensor 1801 embedded in the plastic plate body 408, and an electromagnetic water valve 1802 is provided on the chilled water supply pipeline 14. The electromagnetic water valve 1802 can automatically adjust the opening degree under the action of the temperature sensor 1801.

[0051] According to the above, when the staff rotates the movable rotating cylinder 406, the plastic plate body 408 will contact the side wall of the hot pressing conversion chamber 16. At this time, the temperature sensor 1801 will also contact the inner wall of the hot pressing conversion chamber 16. Next, the temperature sensor 1801 will monitor the temperature of the hot pressing conversion chamber 16.

[0052] When the temperature exceeds the preset value, the electromagnetic water valve 1802 will open fully. At this time, the ice water flow rate reaches the maximum. When the temperature gradually decreases, the electromagnetic water valve 1802 will gradually close, thereby automatically adjusting the refrigeration efficiency.

[0053] In this embodiment, by setting the flow rate adjustment mechanism 18 and using the mutual cooperation between the temperature sensor 1801 and the electromagnetic water valve 1802, the ice water flow rate in the chilled water supply pipeline 14 can be automatically adjusted according to the actual temperature in the heat-pressure conversion chamber 16, thereby realizing the automatic adjustment of the refrigeration efficiency. This can not only ensure the refrigeration effect but also avoid extra waste.

[0054] Embodiment Four

[0055] To facilitate the staff to quickly evaluate the heat exchange performance of the heat-pressure conversion mechanism 4 and improve the efficiency of equipment inspection, on the basis of the above embodiment, as Figure 1 、 Figure 2 、 Figure 7 and Figure 8 shown, in this embodiment, a water temperature monitoring mechanism 19 is provided between the circulating water supply pipeline 8 and the circulating water return pipeline 9. Specifically, the water temperature monitoring mechanism 19 includes an alarm 1901. A display screen assembly 1902 for displaying the temperature difference is provided on the alarm 1901. Upper mounting sleeves 1903 and lower mounting sleeves 1904 are symmetrically arranged on both sides of the alarm 1901. The upper mounting sleeve 1903 is fixedly sleeved outside the circulating water supply pipeline 8, and the lower mounting sleeve 1904 is fixedly sleeved outside the circulating water return pipeline 9. Temperature measuring probes 1905 for measuring the water temperature are provided inside both the upper mounting sleeve 1903 and the lower mounting sleeve 1904. The two temperature measuring probes 1905 are respectively inserted into the circulating water supply pipeline 8 and the circulating water return pipeline 9.

[0056] According to the above content, during the low-pressure water circulation process, the two temperature measuring probes 1905 will continuously monitor the water temperatures in the circulating water supply pipeline 8 and the circulating water return pipeline 9 respectively, and display the temperature difference through the display screen assembly 1902 to the outside.

[0057] During the routine inspection by the staff, they can quickly know the operating condition of the heat-pressure conversion mechanism 4 by observing the values on the display screen assembly 1902, which is convenient to use. Moreover, when the temperature difference change is less than a certain value, the alarm 1901 will immediately give an alarm, thereby reminding the staff to repair the device in time.

[0058] In this embodiment, by setting up the water temperature monitoring mechanism 19 and utilizing the mutual cooperation between the installation sleeve and the temperature measuring probe 1905, it can help the staff quickly evaluate the heat exchange performance of the hot press conversion mechanism 4, effectively improve the efficiency of the staff's inspection, and is convenient to use. Moreover, in this embodiment, by setting up the water temperature monitoring mechanism 19 and utilizing the mutual cooperation between the alarm 1901 and the display screen assembly 1902, it can monitor the heat exchange efficiency in real time and immediately send an alarm to the staff when a problem occurs, greatly improving the timeliness of equipment maintenance, effectively preventing the occurrence of accidents, and having high installability.

[0059] Embodiment Five

[0060] According to the above content, a cooling method for a high geothermal deep well during multi-level construction is as follows: First, use the chilled water pump 2 to pump out the ice water in the ground chilled water tank 3 and form a high-pressure chilled water circulation among the chilled water supply pipeline 14, the high-pressure side pipeline 402, and the chilled water return pipeline 15. Then, use the downhole chilled water pump 5 to pump out the circulating water in the copper elbow and form a low-pressure water circulation among the circulating water supply pipeline 8, the low-pressure side pipeline 403, and the circulating water return pipeline 9. Subsequently, during the simultaneous progress of the high-pressure chilled water circulation and the low-pressure water circulation, the heat inside the low-pressure side pipeline 403 will be absorbed by the high-pressure side pipeline 402 to achieve heat exchange, thereby reducing the temperature of the circulating water. Finally, the cooled circulating water will return to the inside of the copper elbow through the circulating water return pipeline 9, thereby cooling the inside of the horizontal branch tunnel 13.

[0061] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present invention mainly aims to protect mechanical devices, so the control mode and circuit connection of the present invention will not be explained in detail.

[0062] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0063] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature deep well multi-level construction period cooling device, comprising a horizontal ground (12), a plurality of horizontal branch tunnels (13) are opened below the horizontal ground (12), and a heat-pressure conversion chamber (16) is opened inside each horizontal branch tunnel (13), characterized in that: A chiller (1) for conveying cooling water is provided on the horizontal ground (12); a ground chiller (3) for storing ice water is provided on one side of the chiller (1); a cooling water supply pipeline (10) and a cooling water return pipeline (11) are provided on the other side of the chiller (1); a liquid inlet end of the ground chiller (3) is connected to the chiller (1); a chilled water pump (2) for conveying ice water is provided at a liquid outlet end of the ground chiller (3); and a chilled water supply pipeline (14) is connected to the chilled water pump (2); The heat-pressure conversion chamber (16) is provided with a heat-pressure conversion mechanism (4) and a downhole cold water pump (5), an air cooler (6) is detachably installed inside the horizontal branch tunnel (13), a shell support mechanism (17) is provided at the lower end of the heat-pressure conversion mechanism (4), a flow regulating mechanism (18) is provided on the chilled water supply pipeline (14), and the heat-pressure conversion mechanism (4) comprises a mounting shell (401), a high-pressure side pipeline (402) is provided on one side of the mounting shell (401), a low-pressure side pipeline (403) is provided on the other side of the mounting shell (401), and a heat conduction component (404) is provided between the high-pressure side pipeline (402) and the low-pressure side pipeline (403).

2. The high ground temperature deep well multi-level construction period cooling device according to claim 1 is characterized by: The chilled water supply pipeline (14) is connected to one end of the high-pressure side pipeline (402), and the other end of the high-pressure side pipeline (402) is connected to the chilled water return pipeline (15), and the chilled water return pipeline (15) is connected to the chiller (1).

3. A high ground temperature deep well multi-level construction period cooling device according to claim 2, characterized in that: A copper elbow is provided inside the air cooler (6), one end of the copper elbow is connected to a circulating water supply pipeline (8), and the other end of the copper elbow is connected to a circulating water return pipeline (9). A downhole cold water pump (5) is provided on the circulating water return pipeline (9). The circulating water supply pipeline (8) and the circulating water return pipeline (9) are respectively connected to the two ends of the low-pressure side pipeline (403).

4. The high ground temperature deep well multi-level construction period cooling device according to claim 1 is characterized by: The heat-conducting component (404) is composed of a plurality of heat-conducting copper tubes.

5. The high ground temperature deep well multi-level construction period cooling device according to claim 1 is characterized by: The two sides of the installation shell (401) are symmetrically provided with fixed screws (405), a movable rotating cylinder (406) is threadedly connected to the fixed screws (405), a connecting round rod (407) is coaxially movably installed on the movable rotating cylinder (406), and a plastic plate (408) is fixedly installed on the connecting round rod (407).

6. The high-temperature deep well multi-level construction period cooling device according to claim (1), characterized in that: The shell support mechanism (17) comprises a plastic base (1701) fixedly mounted on the lower end of the mounting shell (401), a mounting square plate (1702) fixedly mounted on the plastic base (1701), a threaded boss (1703) fixedly mounted on the mounting square plate (1702), and a rotating protrusion (1704) movably mounted on the threaded boss (1703).

7. The high ground temperature deep well multi-level construction period cooling device according to claim 1 is characterized by: The flow regulating mechanism (18) comprises a temperature sensor (1801) mounted on a plastic plate (408), and an electromagnetic water valve (1802) is arranged on the chilled water supply pipeline (14).

8. The high-temperature deep well multi-level construction period cooling device according to claim 3 is characterized by: A water temperature monitoring mechanism (19) is provided between the circulating water supply pipeline (8) and the circulating water return pipeline (9), and the water temperature monitoring mechanism (19) comprises an alarm (1901), a display screen component (1902) for displaying the temperature difference is provided on the alarm (1901), and an upper mounting sleeve (1903) and a lower mounting sleeve (1904) are symmetrically provided on both sides of the alarm (1901).

9. The high-temperature deep well multi-level construction period cooling device according to claim 8 is characterized by: The upper mounting sleeve (1903) and the lower mounting sleeve (1904) are both provided with temperature measuring probes (1905) for measuring water temperature.

10. A high geothermal deep well multi-level construction period cooling device according to any one of claims 1 to 9, characterized in that: The high geothermal deep well multi-level construction period cooling method is: The first step: the chilled water pump (2) pumps out the chilled water in the ground cold water tank (3) and forms a high-pressure chilled water circulation between the chilled water supply pipeline (14), the high-pressure side pipeline (402) and the chilled water return pipeline (15); Step 2: The underground cold water pump (5) extracts the circulating water in the copper elbow and forms a low-pressure water circulation between the circulating water supply pipeline (8), the low-pressure side pipeline (403) and the circulating water return pipeline (9); Step 3: During the simultaneous circulation of high-pressure chilled water and low-pressure water, the heat inside the low-pressure side pipe (403) will be absorbed by the high-pressure side pipe (402), achieving heat exchange, thereby reducing the circulating water temperature; Step 4: The cooled circulating water will return to the interior of the copper elbow through the circulating water return pipe (9), thereby cooling the interior of the horizontal branch tunnel (13).

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