Tunnel construction cooling device

Abstract

This invention provides a tunnel construction cooling device, including a vehicle body, a cold air supply device, and a duct assembly. The vehicle body can move forward and backward and turn. The vehicle body is equipped with a duct storage box and a compartment, with the cold air supply device installed inside the compartment. The top of the compartment has a return air inlet and a cold air outlet with a bend in the duct, while the rear end has a condenser inlet and a condenser exhaust outlet. The duct storage box stores the duct assembly. The duct assembly consists of multiple retractable cold air hoses and hot air hoses. In use, it is moved into the tunnel, the cold air hoses are removed, connected to form a cold air duct, and installed on the bend in the duct. The cold air outlet is directed towards the tunnel face for cooling. The hot air hoses are connected to form a hot air duct and installed on the condenser exhaust outlet, extending out of the tunnel. As the tunnel face advances, the cold air outlet is moved forward by extending the cold air duct or moving the vehicle body.

Description

Technical Field

[0001] This invention relates to tunnel construction cooling equipment, and more particularly to tunnel construction cooling equipment that can be moved inside a tunnel. Background Technology

[0002] Tunnel construction is a crucial part of transportation infrastructure development. The process requires extensive use of construction equipment, which generates significant heat, forcing workers to operate in high-temperature and high-humidity environments. If the rock temperature is already high, the ambient temperature will rise further. These conditions not only negatively impact the health of workers and reduce labor efficiency, but also decrease the efficiency of construction machinery, accelerate wear and tear on mechanical parts, and significantly increase the failure rate of electrical components, ultimately affecting the lifespan of the equipment.

[0003] Currently, the most common cooling methods used in tunnel construction are cold air cooling, cold water spray cooling, and ice making. However, cold air cooling requires the installation of cooling equipment inside the tunnel. This equipment is not only bulky and requires a large amount of cooling water to operate, but laying cooling water pipes inside the tunnel is also difficult and costly. Furthermore, because the cooling water pipes cannot be moved after installation, the cooling equipment can only cool the space near the pipe installation location, failing to effectively cool environments with high heat generation and concentrated personnel and equipment, such as the tunnel face, where construction is constantly progressing.

[0004] Spraying cold water mist for cooling works by absorbing heat from the air with sprayed water mist to achieve a cooling effect. However, this method will significantly increase the air humidity, affecting the health of personnel and the normal operation of equipment. Ice-making cooling involves placing ice blocks directly in the working environment, with a cooling range of about 3.5 meters and a cooling temperature of 3-5℃, but the cooling efficiency is not high.

[0005] The primary objective of this invention is to provide a tunnel construction cooling device that is simple to use, can be adjusted in position as needed, and can directly cool the environment at the working face and other construction sites.

[0006] The second objective is to reduce the adverse effects of the heat generated by the cooling equipment itself circulating within the tunnel during use on cooling efficiency. Summary of the Invention

[0007] To address the aforementioned issues, the tunnel construction cooling equipment of this application comprises a vehicle body, a cold air supply device, and a duct assembly. The vehicle body has a power mechanism, enabling it to move forward and backward and turn under the operation of a driver. The vehicle body is equipped with a duct storage box and a compartment. The compartment has a rectangular structure, including a condensation section compartment and a fresh air section compartment. The cold air supply device includes a condenser, a condenser fan, an evaporator, a blower, a compressor, a liquid storage tank, and a gas-liquid separator.

[0008] The condenser, compressor, liquid storage tank, and gas-liquid separator are installed in the condensing section housing. The condenser is located on the condensing air inlets on the left and right sides of the condensing section housing, and the rear end of the condensing section housing has a rearward-opening condensing exhaust port. The condensing fan is installed on the condensing exhaust port via a condensing fan bracket. When the condensing fan is started, outside air enters the condensing section housing from both sides, exchanges heat with the condenser to form hot air, and is then discharged rearward through the condensing exhaust port.

[0009] The evaporator and the blower are installed in the fresh air section compartment. The top plate of the fresh air section compartment is provided with return air inlets and cold air outlets at certain intervals along the front-to-back direction. The evaporator is located between the return air inlet and the cold air outlet, dividing the fresh air section into two spaces. The blower is located on one side of the cold air outlet, and the blower outlet is connected to the cold air outlet. When the blower is started, outside air enters the fresh air section through the return air inlet, exchanges heat with the evaporator to form cold air, and is then discharged through the cold air outlet.

[0010] The duct assembly includes a hot air duct corresponding to the diameter of the condenser exhaust port and a cold air duct with a bend diameter corresponding to the diameter of the bend, both installed on the cold air outlet. The cold air duct includes multiple retractable cold air end hoses, each with the same diameter as the bend, and they can be interconnected via an end connection mechanism. The cold air end hose and the hot air duct can be stored in the duct storage box.

[0011] According to the technical solution of this application, the tunnel construction cooling system can move freely inside the tunnel during use, for example, to the tunnel face, with the front of the vehicle facing the tunnel interior and the condenser exhaust vent facing the tunnel exit. Then, one end of the hot air duct is connected to the condenser exhaust vent, and the other end extends to the tunnel exit. Multiple cold air hoses are connected together according to the tunnel length to form a cold air duct, with one end connected to a bend in the cold air outlet and the other end extending to, for example, near the tunnel face.

[0012] After the cold air supply device is started, under the negative pressure of the condenser fan, outside air enters the condenser section box from both sides, exchanges heat with the condenser to form hot air, and is then discharged from the condenser exhaust port and discharged to the outside of the tunnel through the hot air pipe.

[0013] Simultaneously, under the negative pressure of the blower, outside air enters the fresh air section through the return air inlet, exchanges heat with the evaporator to form cold air, and then is delivered to the tunnel face through the cold air outlet and cold air duct for cooling. As the tunnel face advances, extending the cold air duct or moving the vehicle forward can move the cold air outlet forward accordingly, simultaneously cooling the heated tunnel face.

[0014] Since the diameter of each of the aforementioned cold air end hose ports is the same as the diameter of the bend, they can be connected to each other through the end connection mechanism. The order can be disregarded, and the various cold air end hoses can be arbitrarily connected to form a cold air duct.

[0015] Preferably, the hot air duct includes multiple retractable hot air end hoses, the diameter of each hot air end hose port is the same as the diameter of the condensate exhaust port, and they can be connected to each other through an end connection mechanism.

[0016] Preferably, the inner diameter of the cold air end hose is larger than the outer diameter of the hot air end hose, or the outer diameter of the cold air end hose is smaller than the inner diameter of the hot air end hose, and they can be nested together and stored in the duct storage box.

[0017] Therefore, it not only reduces storage space, but also makes it easy to distinguish between the cold air end hose and the hot air end hose.

[0018] Preferably, the cooling air end hose has hanging rings spaced at certain intervals on its body.

[0019] Therefore, it is possible to use lifting rings to suspend the air ducts on hooks on the tunnel wall, thus keeping the air ducts fixed.

[0020] Preferably, the condenser section housing is sealed except for the condenser exhaust port and the condenser inlet port, and the compressor, liquid storage tank, and gas-liquid separator are installed on the path of the hot air coming out of the condenser.

[0021] Therefore, the hot air from the condenser can be used to cool the compressor, liquid storage tank, and gas-liquid separator, while simultaneously releasing the heat generated by the compressor and other components outside the tunnel, thus avoiding the adverse effects of the heat generated by the tunnel construction cooling equipment circulating inside the tunnel.

[0022] Preferably, it also includes a reel cable, which is installed in the space between the cab and the duct storage box. When in use, the cable is pulled out from the reel cable and plugged into an external power source to supply power to the cold air delivery device.

[0023] By utilizing external electrical energy, compared to the tunnel construction cooling equipment generating its own power, the heat output of the tunnel construction cooling equipment can be reduced, thus improving the cooling effect.

[0024] Preferably, an inspection door is provided on the side of the fresh air section housing, corresponding to the position of the return air inlet. This allows personnel to enter the fresh air section housing to inspect and maintain the return air inlet.

[0025] Preferably, a primary filter and a baffle plate are respectively provided on both sides of the evaporator.

[0026] Preferably, the return air inlet has a rectangular shape and spans the entire fresh air section.

[0027] Preferably, a power distribution cabinet and an inspection door are provided on the left side of the fresh air section. Attached Figure Description

[0028] Figure 1 Schematic diagram of the right side of the transport-type tunnel cooling vehicle; Figure 2 A schematic diagram of the left side of the transport-type tunnel cooling vehicle; Figure 3 A schematic diagram of the vehicle body structure of a transport-type tunnel cooling vehicle; Figure 4 Schematic diagram of the box body and surrounding parts installed on the vehicle body; Figure 5 A schematic diagram of the front left side of the transport-type tunnel cooling vehicle; Figure 6 A schematic diagram of the right rear side of the transport-type tunnel cooling vehicle; Figure 7 Schematic diagram of the internal structure of the compartment after disassembly; Figure 8 Schematic diagram of the formation path of hot air; Figure 9 A schematic diagram illustrating the formation path of cold air; Figure 10 Schematic diagram of the cold air end hose; Figure 11 A schematic diagram showing the state of the air conditioning hose before connection; Figure 12 A schematic diagram showing the state after the cold air end hose is connected; Figure 13 Schematic diagram of the overall structure of the duct storage box; Figure 14 A diagram showing the duct assembly stored in the duct storage box. Figure 15 A schematic diagram illustrating the working state of a transportable tunnel cooling vehicle in a tunnel; Figure 16 A schematic diagram showing the state of the cold air duct suspended in the tunnel; Figure 17 Schematic diagram of the combined operation of a transportable tunnel cooling vehicle and a drilling rig.

[0029] In the diagram, 1. Vehicle body, 11. Driver's cab, 12. Cable reel, 13. Duct storage box, 131. Upper door, 132. Middle door, 133. Lower door, 134. Upper layer, 135. Middle layer, 136. Lower layer, 137. Partition, 14. Box body, 141. Condensation section box body, 1411. Condensation exhaust vent, 1412. Protective cover, 1413. Condensation air inlet, 142. Fresh air section box body, 1421. Return air inlet, 1422. Cold air outlet, 1423. Inspection door, 1424. Electrical distribution cabinet, 1425. Data transmission control cabinet, 2. Cold air supply device, 21. Condenser, 211. 22. Dustproof net, 22. Condenser fan, 221. Condenser fan bracket, 23. Evaporator, 24. Blower, 25. Compressor, 26. Primary filter, 27. Water baffle, 28. Isolation plate, 29. Liquid storage tank, 210. Gas-liquid separator, 3. Duct assembly, 31. Hot air duct, 311. Hot air end hose, 32. Cold air duct, 321. Cold air end hose, 322. Engineering zipper, 3221. Half-width engineering zipper, 323. Lifting ring, 324. Sealing ring, 4. Tunnel top surface, 41. Hook, 45. Working face, 5. Drilling rig, 51. Drilling equipment, 52. Hinge, 100. Platform, 110. Bend. Detailed Implementation

[0030] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0031] The following explanation uses a transportable tunnel cooling vehicle as an example to illustrate tunnel construction cooling equipment.

[0032] Figure 1 This is a schematic diagram of the right side of a transportable tunnel cooling vehicle. Figure 2 This is a schematic diagram of the left side of a transportable tunnel cooling vehicle. (See diagram below.) Figure 1 , Figure 2 As shown, the transport-type tunnel cooling vehicle mainly includes a vehicle body 1, a cable reel 12, an air duct storage box 13, and a cargo box 14 installed behind the driver's cab 11. The cargo box 14 is equipped with a cold air supply device 2 (described later). Figure 7 The top of the compartment 14 has an upward-opening return air inlet 1421 and a cold air outlet 1422. A forward-opening elbow 110 is installed on the return air inlet 1421, and the end of the elbow 110 has a structure for connecting to the cold air duct 32 described later. The two sides of the rear end of the compartment 14 have condenser air inlets 1413, and the rear end face has a rearward-opening condenser exhaust outlet 1411, the end of which has a structure for connecting to the hot air duct 31 described later.

[0033] In use, the transportable tunnel cooling vehicle is moved into the tunnel. A cold air duct 32 is installed at the end of the cold air outlet 1422, with the port of the cold air duct 32 extending to the working face and other areas requiring focused cooling. A hot air duct 31 is installed at the end of the condensate exhaust outlet 1411, with the port of the hot air duct 31 extending outside the tunnel (see Appendix). Figure 15 ).

[0034] After the cold air supply device 2 is activated, under the negative pressure of the cold air supply device 2, the airflow (return air) entering through the return air inlet 1421 is cooled into cold air through heat exchange inside the compartment 14 and then delivered to the environment requiring cooling through the cold air outlet 1422 and the cold air duct 32. The airflow entering through the condenser inlet 1413 is heated into hot air during the heat exchange process and then discharged outside the tunnel through the condenser exhaust outlet 1411 and the hot air duct 31.

[0035] On the left side of the compartment 14, there is also an inspection door 1423, a power distribution cabinet 1424, and a data transmission control cabinet 1425 installed on the left side of the reel cable 12.

[0036] Vehicle body 1 Figure 3 As shown, a common wheeled automobile chassis is used, featuring a transmission system, a running system, a steering system, and a braking system. The driver can manipulate the vehicle body 1 to move forward and backward and steer. A driver's cab 11 is located at the front of the vehicle body 1, and a platform 100 for mounting the cargo box 14, etc., is located at the rear of the driver's cab 11. The vehicle body 1 uses existing technology, and its detailed structure will not be described here. The cable reel 12, the duct storage box 13, and the cargo box 14 are sequentially mounted on the platform 100 (see Appendix). Figure 1 ).

[0037] Box 14 Figure 4 As shown, it has a rectangular shape, and its interior is divided into two parts by a partition 28. The front part is the fresh air section 142, and the rear part is the condenser section 141 (see Appendix). Figure 7 ).

[0038] A rectangular return air inlet 1421 spanning the entire fresh air section 142 is located on the rear side of the top of the fresh air section 142, and a cold air outlet 1422 is located on the front side (the forward-bent pipe 110 has been removed in the figure). Condensation section 141 has condensation air inlets 1413 on both sides and a condensation exhaust outlet 1411 on the rear side (see appendix). Figure 6 ).

[0039] On the left side (right side of the driver) of the fresh air section compartment 142, from back to front, are arranged an inspection door 1423 and a power distribution cabinet 1424 (see appendix). Figure 2 , 5The inspection door 1423 is located corresponding to the return air inlet 1421. Through the inspection door 1423, it is possible to easily enter the fresh air section compartment 142 for maintenance and replacement of the top return air inlet 1421 and the side primary filter 26 and water baffle 27 (see Appendix). Figure 7 The entire compartment 14 is mounted side by side on the platform 100 of the vehicle body 1, along with the front duct storage box 13 and the reel cable 12.

[0040] Figure 5 This is an overall schematic diagram of the left front side of the transport-type tunnel cooling vehicle. Figure 6 This is a schematic diagram of the right rear side of the transport-type tunnel cooling vehicle. Figure 5 and 6 The elbow 110 installed on the cold air outlet 1422 was removed. Since the doors of the data transmission control cabinet 1425, the power distribution cabinet 1424, the maintenance door 1423, and the air duct storage box 13 are all located on the same side (left side) of the vehicle body 1, that is, close to the tunnel sidewall, the operation will not affect vehicles coming from the opposite direction, which is convenient for operation and has little impact on traffic in the tunnel.

[0041] A reel cable 12 located at the rear of the driver's cab 11 supplies power to the cold air supply device 2, etc. The reel cable 12 not only facilitates cable storage but also allows the use of a power source at a greater distance, reducing heat generation within the tunnel and improving cooling efficiency compared to using the vehicle's own power source 1. A data transmission control cabinet 1425 located to the left of the reel cable 12 is used for data transmission with the outside world. A power distribution cabinet 1424 located on the left side of the fresh air section compartment 142 supplies power to the cold air supply device 2.

[0042] The duct storage box 13 and its internal duct structure will be described in detail later.

[0043] Figure 7 This is a schematic diagram of the internal structure of the disassembled compartment. (Example:) Figure 7 As shown, the compartment 14 is divided into front and rear spaces by a partition plate 28. The left and right sides of the condensing section compartment 141 located at the rear have condensing air inlets 1413, with a condenser 21 installed at each inlet. A protective dust net 211 is installed on the outside of the condenser 21 to prevent debris generated during tunnel operations from entering the compartment 14 with the airflow. A condensing exhaust vent 1411 is located at the rear of the condensing section compartment 141. A condensing fan 22 is mounted on the exhaust vent 1411 via a condensing fan bracket 221. A protective cover 1412 is installed on the outside of the condensing fan 22 to prevent foreign objects from entering and damaging its blades.

[0044] Four compressors 25, four corresponding liquid storage tanks 29, and four gas-liquid separators 210 are respectively installed along the airflow path inside the condenser section housing 141. The four compressors 25 are located in the middle of the lateral direction inside the condenser section housing 141, the four liquid storage tanks 29 are arranged in pairs on the left and right sides of the compressors 25, and the four gas-liquid separators 210 are arranged in pairs on the left and right sides of the liquid storage tanks 29. That is, the components with high heat generation are located near the center, and the components with low heat generation are located near the condenser 21. The heat generated by the compressors 25 can be directly carried out of the condenser section housing 141.

[0045] The fresh air section 142 located at the front is equipped with a pre-filter 26, an evaporator 23, a baffle plate 27, and a blower 24. The area between the pre-filter 26 and the baffle plate 28 serves as a space for maintenance personnel. An inspection door 1423 and a power distribution cabinet 1424 are located on the left side, and a return air inlet 1421 is located on the top. The blower 24 is installed in the space in front of the baffle plate 27, and the outlet of the blower 24 is connected to the cold air outlet 1422 on the top.

[0046] The entire condenser section housing 141 and the fresh air section housing 142 are sealed except for the condenser air inlet 1413, the condenser air outlet 1411, the return air inlet 1421, and the cold air outlet 1422.

[0047] The condenser 21, condenser fan 22, evaporator 23, blower 24, compressor 25, liquid storage tank 29 and gas-liquid separator 210 constitute the cold air supply device 2 of the present invention.

[0048] After the cold air supply device 2 is started, the low-temperature, low-pressure gaseous refrigerant is compressed by the compressor 25 into a high-temperature, high-pressure gaseous refrigerant that flows into the condenser 21. There, it exchanges heat with the airflow generated by the condenser fan 22, gradually decreasing in temperature and transforming into a medium-temperature, high-pressure liquid. This medium-temperature, high-pressure liquid refrigerant flows into the liquid storage tank 29, where it is throttled and depressurized by the expansion valve, becoming a low-temperature, low-pressure liquid refrigerant. This low-temperature, low-pressure liquid refrigerant then enters the evaporator 23 to cool the airflow entering through the return air inlet 1421.

[0049] In the evaporator 23, the refrigerant exchanges heat with the airflow generated by the blower 24, vaporizing into a low-temperature, low-pressure gaseous refrigerant, which then enters the next cycle. The air heated by the condenser 21 cools the liquid storage tank 29, the gas-liquid separator 210, and the compressor 25 within the condenser section housing 141 before being discharged outwards through the rear condenser exhaust port 1411. The discharged hot air is finally released outside the tunnel through the hot air duct 31.

[0050] Figure 8This is a schematic diagram of the hot air formation path. Under the negative pressure generated by the condenser fan 22, the outside airflow (condenser intake air) enters the condenser section housing 141 through the condenser intake port 1413. During its passage through the condenser 21, it exchanges heat with the condenser 21 and becomes hot air. As the hot air passes through the condenser section housing 141, it cools the high-temperature components such as the compressor 25 inside, and then exits through the rear condenser exhaust port 1411. Because the heat generated by the compressor 25 is cooled by the passing hot air, compared to the direct discharge of the heat from the compressor 25 into the tunnel, the temperature inside the tunnel is reduced, and the cooling effect is improved.

[0051] When used inside the tunnel, a cold air duct 32 is installed at the cold air outlet 1422 to discharge cold air to the parts that need cooling (such as the tunnel face); a hot air duct 31 is installed on the condensate exhaust outlet 1411 to discharge hot air outside the tunnel (see Appendix). Figure 15 ).

[0052] Figure 9 This is a schematic diagram of the cold air generation path. That is, outside air enters the fresh air section compartment 142 through the return air inlet 1421 under the negative pressure generated by the blower 24. Large particulate impurities are removed by the primary filter 26, and heat is exchanged with the evaporator 23 to form cold air. The cold air passes through the baffle plate 27 to filter condensate, and is then pressurized by the blower 24 and discharged from the cold air outlet 1422.

[0053] When used inside a tunnel, a bend 110 is installed on the cold air outlet 1422, with the front opening of the bend 110 facing the front of the vehicle body 1. A cold air duct 32 is installed on the end of the bend 110 (see Appendix). Figure 1 , 2 The cold air is delivered to the tunnel face, for example, through the cold air duct 32, to directly cool the environment at the tunneling site.

[0054] The following describes the duct storage box and duct components. The duct assembly 3 includes a hot air duct 31 installed at the condenser exhaust port 1411 and a cold air duct 32 installed on the bend 110.

[0055] The cold air duct 32 is composed of multiple retractable cold air end hoses 321 connected together. The port diameter of each cold air end hose 321 is the same as that of the port of the bend 110, and any cold air end hose 321 can be connected to the port of the bend 110.

[0056] Figure 10 This is a schematic diagram of the cold air end hose. Figure 10As shown, each end of the cold air hose 321 and the cold air outlet 1422 are provided with a connecting mechanism. The cold air hose 321 and the cold air outlet 1422, as well as each cold air hose 321, are sealed and connected by the same connecting mechanism.

[0057] In this embodiment, the cold air end hose 321 is a retractable tube similar to an accordion cover, with internal steel wire support. The connecting mechanism is an engineering zipper 322. Half-width engineering zippers 3221 are provided on the cold air outlet 1422 and at both ends of the cold air end hose 321. In use, the two cold air end hoses 321 are connected by connecting the two half-width engineering zippers 3221, thereby connecting each cold air end hose 321 into a cold air duct 32 through the engineering zipper 322. The cold air duct 32 is then connected to the cold air outlet 1422 through the engineering zipper.

[0058] like Figure 10 As shown, a sealing ring 324 is provided at the air outlet end of the cold air end hose 321. The sealing ring 324 is located inside the engineering zipper 322. When connecting two cold air end hoses 321, the sealing ring 324 at the end of one cold air end hose 321 is inserted into the air inlet end of the other cold air end hose 321, so that the sealing ring 324 seals the engineering zipper 322 from the inside to prevent air leakage.

[0059] Figure 11 This is a schematic diagram showing the state before the cold air end hose is connected, according to... Figure 11 As shown, after connecting the ends of multiple cold air end hoses 321, and then pulling the two half-width engineering zippers 3221 on both sides together, the connection is completed. Figure 12 This is a schematic diagram showing the state after the cold air end hoses are connected. Therefore, multiple cold air end hoses 321 can be connected into a cold air duct 32 of appropriate length as needed to conveniently deliver cold air to the working face and other construction sites. Because it uses a telescopic tube similar to an accordion cover, its length can be extended simply by pulling forward, eliminating the need to frequently start the engine and move the entire transportable tunnel cooling vehicle, thus avoiding the generation of new heat in the tunnel and improving the cooling effect.

[0060] The cold air end hose 321 has hanging rings 323 installed at certain intervals on its body. According to the spacing of the hooks 41 installed on the inner wall of the tunnel 4, the length of each cold air end hose 321 is pulled to adjust the position of the hanging rings 323 to the position corresponding to the hooks 41 on the inner wall of the tunnel 4, and the hanging rings 323 on the cold air hose 32 are hung on the hooks 41 on the inner wall of the tunnel 4. Figure 16This is a schematic diagram showing the cold air duct suspended in the tunnel. The cold air duct 32 can be fixed to the tunnel wall using hooks 41 on the inner wall of tunnel 4. Similarly, the hot air duct 31 is also composed of multiple retractable hot air end hoses 311 connected together. The diameter of the port of each hot air end hose 311 is the same as the port of the condenser exhaust port 1411. Each end of the hot air end hose 311 and the condenser exhaust port 1411 are equipped with a connecting mechanism. The hot air end hoses 311 and the condenser exhaust port 1411, as well as each hot air end hose 311, are sealed together using the same connecting mechanism.

[0061] The hot air hose 311 and the cold air hose 321 are structurally identical except for their diameter. Specifically, the connection mechanism at the end of the hot air hose 311 is the same as that at the end of the cold air hose 321—both are engineering zippers. Multiple hot air hoses 311 are interconnected via these zippers to form a hot air duct 31, which is then connected to the condensate exhaust port 1411 via the zippers. The specific connection structure of the hot air hose 311 is described above for the cold air hose 321 and will not be repeated here.

[0062] Since the hot air duct 31 is composed of multiple retractable hot air end hoses 311, an appropriate number of hot air end hoses 311 can be selected and connected to form a hot air duct 31 of appropriate length according to the needs of the tunnel length, so as to meet the use of tunnels of different lengths. It is also convenient to store and move.

[0063] Similarly, because the hot air end hose 311 uses a telescopic tube similar to an accordion cover, its length can be extended simply by pulling it forward, without the need to frequently start the engine to move the entire transport tunnel cooling vehicle, thus avoiding the generation of new heat in the tunnel and improving the cooling effect.

[0064] The lengths of the cold air duct 32 and the hot air duct 31 are designed according to the duct storage box 13, and can be stored in the duct storage box 13 after compression.

[0065] The inner diameter of the cold air end hose 321 is, for example, larger than the outer diameter of the hot air end hose 311, and they can be nested together and stored in the duct storage box 13. Because the inner diameter of the cold air end hose 321 is larger than the outer diameter of the hot air end hose 311, they can be nested together and stored in the duct storage box 13, which not only makes them easy to distinguish but also makes them convenient to store, reducing space occupation.

[0066] Figure 13 This is a schematic diagram of the overall structure of the duct storage box. Figure 13As shown, the duct storage box 13 is equipped with two partitions 137, dividing the internal space of the duct storage box 13 into three layers: an upper layer 134, a middle layer 135, and a lower layer 136, for storing the hot air end hose 311 and the cold air end hose 321. The height of the middle layer 135 corresponds to the diameter of the cold air end hose 321, and the heights of the middle layer 135 and the lower layer 136 correspond to the shortened height of the hot air end hose 311.

[0067] The top has two upward-opening upper doors 131, and the left and right sides have middle doors 132 and lower doors 133 for the spaces of the middle layer 135 and the lower layer 136.

[0068] In this embodiment, the total length of all the cold air end hoses 321 connected is 200m. Therefore, for example, when cooling the environment at the tunnel face 45, the transportable tunnel cooling vehicle can be moved up to 200m away from the tunnel face for cooling without affecting the on-site construction.

[0069] Figure 14 This is a diagram showing the duct assembly stored in the duct storage box. (Example) Figure 14 As shown, two hot air hoses 311 are placed horizontally in the upper layer 134 and lower layer 136 spaces, while two cold air hoses 321 and four hot air hoses 311 are placed vertically in the middle layer 135 space. The two hot air hoses 311 are nested inside the two cold air hoses 321 (the two nested hot air hoses 311 are shown in the figure; the thickness of the two cold air hoses 321 has been reduced). The following describes the use of a transportable tunnel cooling vehicle to cool the tunnel environment.

[0070] Figure 15 This is a schematic diagram showing the working state of a transportable tunnel cooling vehicle in a tunnel. Figure 15 The drawing only shows the state of the cold air duct 32 and the hot air duct 31 conceptually. In actual use, the cold air duct 32 is suspended from the tunnel wall by a hook, so that the cold air outlet is a certain distance away from the ground.

[0071] like Figure 15 As shown, in use, the transportable tunnel cooling vehicle is driven into the tunnel with the front of the vehicle body 1 facing the tunnel face 45. Then, according to the length of the tunnel and the distance to the tunnel face 45, multiple hot air hoses 311 and cold air hoses 321 are taken out from the duct storage box 13. The multiple cold air hoses 321 are connected together to form a cold air duct 32 using an engineering zipper. Then, the air inlet end of the cold air duct 32 is connected to the port of the bend 110 through the engineering zipper 322. Pulling the cold air duct 32 extends the air outlet (port) of the cold air duct 32 to near the tunnel face 45.

[0072] Multiple hot air hoses 311 are connected by engineering zippers in the same way to form a hot air duct 31 of appropriate length. The air inlet of the hot air duct 31 is connected to the condenser exhaust port 1411 by engineering zippers, and the hot air duct 31 is pulled to extend the air outlet of the hot air duct 31 to the tunnel entrance. The hot air duct 31 can be placed on the ground.

[0073] After the cold air supply device 2 is started, under the negative pressure generated by the condenser fan 22, the outside air enters the condenser section box 141 through the condenser air inlets 1413 on both sides, exchanges heat with the condenser 21 to form hot air, and is then discharged through the condenser exhaust outlet 1411 and discharged to the outside of the tunnel through the hot air pipe 31. At the same time, under the negative pressure generated by the supply fan 24, the outside air enters the fresh air section box 142 through the return air inlet 1421, exchanges heat with the evaporator 23 to form cold air, and is then discharged through the cold air outlet 1422. The cold air is discharged to the tunnel face 45 through the cold air pipe 32.

[0074] In this way, the cold air discharged from the cold air outlet 1422 mixes with the fresh air discharged from the fresh air duct set at the top of the tunnel 4 to form a circulation in the tunnel. That is, the cold air is discharged into the innermost working face 45 of the tunnel, the pressure inside the tunnel increases, and the cold air gradually flows from the working face 45, where the heat-generating equipment is concentrated, to the tunnel exit. During the flow of the cold air, the environment at the working face 45 is cooled down first, and the temperature inside the entire tunnel gradually decreases to a suitable temperature.

[0075] This invention features a chassis 14 on a vehicle body 1, comprising a condenser section 141 and a fresh air section 142. A condenser exhaust vent 1411 is located at the rear of the condenser section 141, and a cold air outlet 1422 is located on the upper part of the fresh air section 142. A cold air supply device 2 is installed inside the chassis 14. Hot air generated by the cold air supply device 2 is discharged through the condenser exhaust vent 1411 and then through a hot air duct 31 to the outside of the tunnel. Cold air generated by the cold air supply device 2 is discharged through the cold air outlet 1422 and then through a cold air duct 32 to the tunnel face. This creates a circulating airflow within the tunnel, with cold air gradually flowing from the tunnel interior towards the tunnel exit. During this flow, the temperature inside the tunnel gradually decreases to a suitable level. This invention has a simple structure, is easy to move, and its position can be adjusted as needed, allowing for rapid and efficient temperature regulation within the tunnel.

[0076] As the working face 45 moves forward, the cold air outlet can be moved forward by extending the cold air pipe 32 or moving the vehicle body 1 forward, thus simultaneously cooling the working face that generates heat.

[0077] Figure 17 This is a schematic diagram illustrating the combined operation of a transportable tunnel cooling vehicle and a drilling rig. Figure 17As shown, the front end of the transport-type tunnel cooling vehicle is connected to the rear end of the drilling rig 5 body via hinge 52. When the drilling rig 5 is drilling in the tunnel using drilling equipment 51, the transport-type tunnel cooling vehicle cools the environment of the working face (face) in front of it, which can significantly improve the temperature of the working environment. In particular, it can quickly reduce the ambient temperature around the drilling rig 5, improve the working efficiency of the operators and the drilling rig, and the transport-type tunnel cooling vehicle does not need to start the engine to move and further reduce the temperature inside the tunnel.

[0078] The specific embodiments of this application have been described above. It should be noted that the above embodiments are merely preferred technical solutions and are not intended to limit the scope of protection of this invention.

Claims

1. A tunnel construction cooling device, characterized in that: It includes the vehicle body (1), the cold air supply device (2), and the air duct assembly (3). The vehicle body (1) has a power mechanism and can move forward and backward and turn under the operation of the driver. The vehicle body (1) is equipped with a duct storage box (13) and a box body (14). The compartment (14) has a rectangular structure, including a condensing section compartment (141) and a fresh air section compartment (142). The cold air supply device (2) includes a condenser (21), a condenser fan (22), an evaporator (23), a blower (24), a compressor (25), a liquid storage tank (29), and a gas-liquid separator (210). The condenser (21), compressor (25), liquid storage tank (29), and gas-liquid separator (210) are installed in the condensing section housing (141). The condenser (21) is located on the condensing air inlets (1413) on the left and right sides of the condensing section housing (141). The rear end face of the condensing section housing (141) has a rearward-opening condensing exhaust port (1411). The condensing fan (22) is installed on the condensing exhaust port (1411) via a condensing fan bracket (221). When the condensing fan (22) is started, outside air enters the condensing section housing (141) from both sides, exchanges heat with the condenser (21) to form hot air, and is then discharged rearward from the condensing exhaust port (1411). The evaporator (23) and the blower (24) are installed in the fresh air section compartment (142). The top plate of the fresh air section compartment (142) is provided with a return air inlet (1421) and a cold air outlet (1422) at a certain distance along the front and back direction. The evaporator (23) is located between the return air inlet (1421) and the cold air outlet (1422), dividing the fresh air section compartment (142) into two spaces. The blower (24) is located on one side of the cold air outlet (1422), and the outlet of the blower (24) is connected to the cold air outlet (1422). When the blower (24) is started, outside air enters the fresh air section compartment (142) through the return air inlet (1421), exchanges heat with the evaporator (23) to form cold air, and is then discharged through the bend (110) on the cold air outlet (1422). The duct assembly (3) includes a hot air duct (31) corresponding to the diameter of the condenser exhaust port (1411) and a cold air duct (32) corresponding to the diameter of the bend (110) installed on the cold air outlet (1422). The cooling duct (32) includes multiple retractable cooling end hoses (321), the diameter of each cooling end hose (321) port is the same as the diameter of the bend (110), and they can be connected to each other through the end connection mechanism. The cold air end hose (321) and hot air duct (31) can be stored in the duct storage box (13).

2. The tunnel construction cooling device according to claim 1, characterized in that: The hot air duct (31) includes multiple retractable hot air end hoses (311), the diameter of each hot air end hose (311) port is the same as the diameter of the condenser exhaust port (1411), and they can be connected to each other through the end connection mechanism.

3. The tunnel construction cooling device according to claim 2, characterized in that: The inner diameter of the cold air end hose (321) is larger than the outer diameter of the hot air end hose (311), or the outer diameter of the cold air end hose (321) is smaller than the inner diameter of the hot air end hose (311), and they can be nested together and stored in the air duct storage box (13).

4. The tunnel construction cooling device according to claim 3, characterized in that: Hanging rings (323) are provided at certain intervals on the body of the cold air end hose (321).

5. The tunnel construction cooling device according to any one of claims 1 to 4, characterized in that: The condenser section housing (141) is sealed except for the condenser exhaust port (1411) and the condenser inlet port (1413). The compressor (25), the liquid storage tank (29), and the gas-liquid separator (210) are installed on the path through which the hot air from the condenser (21) passes.

6. The tunnel construction cooling device according to claim 5, characterized in that: It also includes a reel cable (12), which is installed in the space between the cab (11) and the duct storage box (13). When in use, the cable is pulled out by the reel cable (12) and plugged into an external power source to supply power to the cold air supply device (2).

7. The tunnel construction cooling device according to claim 6, characterized in that: On the side of the fresh air section body (142), an inspection door (1423) is provided at the position corresponding to the return air inlet (1421).

8. The tunnel construction cooling device according to claim 7, characterized in that: A primary filter (26) and a baffle plate (27) are respectively provided on both sides of the evaporator (23).

9. The tunnel construction cooling device according to claim 8, characterized in that: The return air inlet (1421) has a rectangular shape and spans the entire fresh air section compartment (142).

10. The tunnel construction cooling device according to claim 9, characterized in that: The left side of the fresh air section compartment (142) is equipped with a power distribution cabinet (1424) and an inspection door (1423).

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