Ventilation cooling device in tunnel

Abstract

The utility model relates to the technical field of tunnel ventilation, in particular to a ventilation and cooling device in a tunnel, which comprises a ventilation frame arranged in the tunnel, the ventilation frame adopts an arc-shaped design and is used for increasing the radiation area of the ventilation device, and the bottom of the ventilation frame is provided with a ventilation opening adopting an arc-shaped design. A protective net is mounted at the ventilation opening; according to the tunnel ventilation device, the arc-shaped ventilation frame is matched with the air inlet fan, air outside a tunnel is ventilated into the tunnel, the water mist spraying device is used in an auxiliary mode during ventilation, the water mist spraying device is arranged on one side of the ventilation frame, the water mist spraying device comprises an arc-shaped communicating pipe, and a plurality of atomization nozzles are evenly and fixedly installed on one side of the arc-shaped communicating pipe. According to the tunnel ventilation cooling device, the air at the ventilation opening can further blow away fog and water mist, large-area ventilation cooling of the interior of a tunnel is achieved more quickly, the air quality of a construction site is protected, and accidents such as heatstroke of constructors can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel ventilation, in particular to a ventilation and cooling device in a tunnel. Background Art

[0002] High altitude refers to an altitude of more than 1,500 meters, and high rock temperature refers to complex geological conditions and significant geothermal heat, which causes the construction environment temperature to be far higher than 28°C. Tunnel construction in high-altitude and high-rock temperature areas will face problems such as thin air, low oxygen content, high on-site dust, and prolonged high ambient temperature.

[0003] In the prior art, a tunnel ventilation device proposed in patent application number "CN202121382726.8" includes a ventilation duct, a drive motor and a fan. A positioning groove is provided inside the ventilation duct, and a limiting groove is provided inside the outer frame of the ventilation duct. A support plate is installed inside the ventilation duct, which can ventilate external air into the tunnel through the ventilation duct.

[0004] However, in the above patent application, the interior of the tunnel can only be ventilated through a single ventilation duct. The air entering the tunnel cannot be quickly diffused inside the tunnel. Moreover, relying only on a single ventilation duct has the problem of poor cooling effect on the interior of the tunnel. Utility Model Content

[0005] The purpose of the utility model is to provide a ventilation and cooling device in a tunnel to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A ventilation and cooling device in a tunnel, comprising a ventilation rack installed inside the tunnel, wherein the ventilation rack adopts an arc-shaped design to increase the radiation area of ​​the ventilation device, and a ventilation opening adopts an arc-shaped design is provided at the bottom of the ventilation rack, and a protective net is installed at the ventilation opening;

[0008] A water mist spraying device is provided on one side of the ventilation frame, and the water mist spraying device includes an arc-shaped connecting pipe, and a plurality of atomizing nozzles are evenly fixedly installed on one side of the arc-shaped connecting pipe. The spraying direction of the atomizing nozzle is located below the ventilation opening, and is used to spray water into atomized form below the ventilation opening;

[0009] A downward-bending baffle is fixedly installed on one side of the ventilation frame. The baffle and the water mist spraying device are respectively arranged on both sides of the ventilation frame. The baffle is used to limit the spraying distance of the atomizing nozzle.

[0010] Preferably, an air inlet fan is provided on the top of the ventilation rack, the air outlet of the air inlet fan is fixedly connected to an air outlet duct, a plurality of diversion pipes are fixedly connected to the air outlet duct, and one end of the diversion pipe away from the air outlet duct is fixedly connected to the top of the ventilation rack.

[0011] Preferably, the air inlet of the air inlet fan is fixedly connected to an air inlet duct, and the top of the air inlet duct is fixedly connected to a flange for connecting to an external ventilation duct.

[0012] Preferably, a protective frame is fixedly connected to one side of the baffle, and an infrared temperature measuring device is fixedly installed on the inner side of the protective frame. The infrared temperature measuring device is used to monitor the ambient temperature of the construction area in the tunnel and the body temperature of the construction workers in real time.

[0013] Preferably, a fixed bracket is fixedly connected to one side of the ventilation rack, and the fixed bracket is fixedly connected to the outer surface of the arc-shaped connecting pipe to provide support for the arc-shaped connecting pipe, and a water inlet main pipe is fixedly installed on the arc-shaped connecting pipe.

[0014] Preferably, a water inlet branch pipe is fixedly installed on the water inlet main pipe, one end of the water inlet branch pipe is fixedly connected to an annular pipe, a leakage hole is opened at the bottom of the annular pipe, and a solenoid valve is provided on the water inlet branch pipe.

[0015] Beneficial effects of the utility model:

[0016] The utility model cooperates with the arc-shaped ventilation rack and the air inlet fan to ventilate the air outside the tunnel into the tunnel. At the same time, it is assisted by a water mist spraying device, so that the wind from the ventilation port can further blow away the water mist, and realize ventilation and cooling of a large area inside the tunnel more quickly, which not only protects the air quality of the construction site, but also prevents construction workers from suffering from heat stroke and other accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This utility model Figure 1 Side view of the central ventilation rack;

[0020] Figure 3 This utility model Figure 1 Schematic diagram of the structure of the central ventilation rack;

[0021] Figure 4This utility model Figure 3 Schematic diagram of the structure of the bottom of the central ventilation rack.

[0022] The reference numerals in the figures are as follows:

[0023] 1. Ventilation rack; 101. Ventilation port; 201. Arc-shaped connecting pipe; 202. Atomizing nozzle; 3. Baffle; 4. Air inlet fan; 5. Air outlet duct; 501. Diverter pipe; 6. Air inlet duct; 601. Flange; 7. Protective frame; 8. Infrared temperature measuring device; 9. Fixed bracket; 10. Water inlet main pipe; 11. Water inlet branch pipe; 12. Ring pipe; 13. Solenoid valve. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 and Figure 4 A ventilation and cooling device in a tunnel includes a ventilation rack 1 installed inside the tunnel. The ventilation rack 1 is installed at a high place in the tunnel. The ventilation rack 1 adopts an arc-shaped design to increase the radiation area of ​​the ventilation device, which can quickly diffuse the airflow to a larger area inside the tunnel. The bottom of the ventilation rack 1 is provided with a vent 101 with an arc-shaped design. The vent 101 adopts the same arc-shaped design as the ventilation rack 1. A protective net is installed at the vent 101 to prevent insects in the tunnel from entering the interior of the ventilation rack 1.

[0026] like Figure 1 and Figure 2 A water mist spray device is provided on one side of the ventilation rack 1, and the water mist spray device includes an arc-shaped connecting pipe 201. The curvature of the arc-shaped connecting pipe 201 is adapted to the curvature of the bottom of the ventilation rack 1 to ensure the consistency of the distance from the arc-shaped connecting pipe 201 to the corresponding position on the ventilation rack 1. A plurality of atomizing nozzles 202 are evenly fixedly installed on one side of the arc-shaped connecting pipe 201. The atomizing nozzles 202 are connected to the arc-shaped connecting pipe 201. The spray direction of the atomizing nozzles 202 is located below the vent 101, and is used to spray water atomization to the bottom of the vent 101;

[0027] like Figure 1 and Figure 2A downward-bent baffle 3 is fixedly installed on one side of the ventilation rack 1. The baffle 3 and the water mist spraying device are respectively arranged on both sides of the ventilation rack 1. The baffle 3 is used to limit the spraying distance of the atomizing nozzle 202, so that the atomized sprayed water can be further dispersed by the wind blown out from the vent 101, thereby increasing the diffusion range of the atomized liquid.

[0028] like Figure 1 、 Figure 2 and Figure 3 The top of the ventilation rack 1 is provided with an air intake fan 4, which is an adjustable speed fan in the prior art and an external power supply. The external power supply is simultaneously connected to the solar panels and generators outside the tunnel. The solar panels outside the tunnel are used to supply energy to the device, which can reduce energy consumption and reduce the use of generators, etc., thereby protecting the air quality at the construction site and being more green and environmentally friendly. The air intake fan 4 is controlled by an external switch, and the air outlet of the air intake fan 4 is fixedly connected to an air outlet duct 5, and a plurality of diversion pipes 501 are fixedly connected to the air outlet duct 5. The diversion pipe 501 is fixedly connected to the top of the ventilation rack 1 at one end away from the air outlet duct 5, and can deliver wind to different positions in the ventilation rack 1.

[0029] like Figure 1 and Figure 3 The air inlet of the air intake fan 4 is fixedly connected to the air intake duct 6, and the top of the air intake duct 6 is fixedly connected to a flange 601 for connecting to the external ventilation duct. The air intake duct 6 is connected to the external duct through the flange 601. The other end of the external duct is located outside the tunnel, and can guide the air outside the tunnel to the inside of the tunnel.

[0030] like Figure 1 and Figure 3 A protective frame 7 is fixedly connected to one side of the baffle 3, and an infrared temperature measuring device 8 is fixedly installed on the inner side of the protective frame 7. The infrared temperature measuring device 8 is used to monitor the ambient temperature of the construction area in the tunnel and the body temperature of the construction workers in real time. The infrared temperature measuring device 8 is an existing technology and can transmit detection data. When it is detected that the ambient temperature is too high, the staff can increase the speed of the air intake fan 4 through the switch control. A single-chip microcomputer with the model of STM32F103C8T6 can also be installed. The infrared temperature measuring device 8 sends the detection data to the single-chip microcomputer, and the single-chip microcomputer controls the speed of the air intake fan 4 according to the set temperature value.

[0031] like Figure 1 A fixed bracket 9 is fixedly connected to one side of the ventilation rack 1, and the fixed bracket 9 is fixedly connected to the outer surface of the arc-shaped connecting pipe 201 to provide support for the arc-shaped connecting pipe 201. A water inlet pipe 10 is fixedly installed on the arc-shaped connecting pipe 201, and the water inlet pipe 10 is connected to an external water supply pipe with a water pump. The external water pump inputs water into the interior of the arc-shaped connecting pipe 201 through the water inlet pipe 10 through the pipe.

[0032] like Figure 1 and Figure 3 A water inlet branch pipe 11 is fixedly installed on the water inlet main pipe 10, and one end of the water inlet branch pipe 11 is fixedly connected to a ring pipe 12. The ring pipe 12 is located above the air intake fan 4, and a leakage hole is opened at the bottom of the ring pipe 12. A solenoid valve 13 is provided on the water inlet branch pipe 11. When the solenoid valve 13 is opened, water can enter the ring pipe 12 through the water inlet branch pipe 11 and leak out from the leakage hole at the bottom of the ring pipe 12 to the surface of the outer casing of the air intake fan 4, which can provide heat dissipation for the air intake fan 4 when the air intake fan 4 runs at high speed.

[0033] The working principle of the tunnel ventilation and cooling device provided by the utility model is as follows:

[0034] When ventilation and cooling are required inside the tunnel, the air inlet fan 4 is started, and the air outside the tunnel is discharged into the interior of the ventilation rack 1 through the air inlet duct 6 and the external duct connected to it, through the air outlet duct 5 and the diversion duct 501, and then diffused into the tunnel through the ventilating opening 101 at the bottom of the ventilation rack 1;

[0035] At the same time, the external water flows into the interior of the arc-shaped connecting pipe 201 through the water inlet main pipe 10, and is then atomized and sprayed from the atomizing nozzle 202 to the bottom of the vent 101, and diffuses into the interior of the tunnel together with the wind blown out of the vent 101.

[0036] Compared with the related art, the tunnel ventilation and cooling device provided by the present invention has the following advantages:

[0037] Beneficial effects:

[0038] The utility model cooperates with the arc-shaped ventilation frame 1 and the air inlet fan 4 to ventilate the air outside the tunnel into the tunnel. At the same time, it is assisted by a water mist spraying device, so that the wind from the vent 101 can further blow away the water mist, and realize ventilation and cooling of a large area inside the tunnel more quickly, which not only protects the air quality of the construction site, but also prevents construction workers from suffering from accidents such as heat stroke.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A ventilation and cooling device in a tunnel, comprising a ventilation rack (1) installed inside the tunnel, characterized in that: The ventilation rack (1) adopts an arc-shaped design to increase the radiation area of ​​the ventilation device. A ventilation opening (101) adopting an arc-shaped design is provided at the bottom of the ventilation rack (1), and a protective net is installed at the ventilation opening (101); A water mist spraying device is provided on one side of the ventilation rack (1), the water mist spraying device comprising an arc-shaped connecting pipe (201), a plurality of atomizing nozzles (202) being evenly fixedly mounted on one side of the arc-shaped connecting pipe (201), the spraying direction of the atomizing nozzles (202) being located below the ventilation opening (101), and being used for spraying water in atomized form below the ventilation opening (101); A downwardly bent baffle (3) is fixedly mounted on one side of the ventilation rack (1); the baffle (3) and the water mist spraying device are respectively arranged on both sides of the ventilation rack (1); the baffle (3) is used to limit the spraying distance of the atomizing nozzle (202).

2. A tunnel ventilation and cooling device according to claim 1, characterized in that: An air inlet fan (4) is provided on the top of the ventilation rack (1); an air outlet of the air inlet fan (4) is fixedly connected to an air outlet duct (5); a plurality of diverter pipes (501) are fixedly connected to the air outlet duct (5); and one end of the diverter pipe (501) away from the air outlet duct (5) is fixedly connected to the top of the ventilation rack (1).

3. The tunnel ventilation and cooling device according to claim 2, characterized in that: The air inlet of the air inlet fan (4) is fixedly connected to an air inlet duct (6), and the top of the air inlet duct (6) is fixedly connected to a flange (601) for connecting to an external ventilation duct.

4. The tunnel ventilation and cooling device according to claim 1, characterized in that: A protective frame (7) is fixedly connected to one side of the baffle (3), and an infrared temperature measuring device (8) is fixedly installed on the inner side of the protective frame (7). The infrared temperature measuring device (8) is used to monitor the ambient temperature of the construction area in the tunnel and the body temperature of the construction workers in real time.

5. The tunnel ventilation and cooling device according to claim 1, characterized in that: A fixed bracket (9) is fixedly connected to one side of the ventilation rack (1); the fixed bracket (9) is fixedly connected to the outer surface of the arc-shaped connecting pipe (201) and is used to provide support for the arc-shaped connecting pipe (201); and a water inlet main pipe (10) is fixedly installed on the arc-shaped connecting pipe (201).

6. The tunnel ventilation and cooling device according to claim 5, characterized in that: A water inlet branch pipe (11) is fixedly installed on the water inlet main pipe (10), one end of the water inlet branch pipe (11) is fixedly connected to an annular pipe (12), a liquid leakage hole is opened at the bottom of the annular pipe (12), and a solenoid valve (13) is provided on the water inlet branch pipe (11).

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