Air multiplication type pressure-outlet ventilation device for tunnel construction

Abstract

The application discloses a tunnel construction air multiplication type pressure-out type ventilation device, which comprises multiple flexible pipes, wherein two adjacent flexible pipes are connected through a connecting assembly, the connecting assembly at least comprises a pressure booster, and pressure-out type ventilation can be realized through multiple pressure boosters.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel ventilation, in particular to an air multiplication and extrusion ventilation device for tunnel construction. Background Art

[0002] Tunnel construction ventilation often uses forced-in ventilation, where axial flow fans (jet fans) outside the tunnel deliver fresh air through ventilation hoses into the tunnel work surface, using the entire tunnel as a return air lane. This results in the entire tunnel acting as a contaminated air duct, exposing workers to polluted air. Exhaust ventilation requires rigid ducting, which is expensive, and neither method effectively controls air temperature.

[0003] Therefore, it is necessary to provide an air multiplication and extrusion ventilation device for tunnel construction to solve the problems raised in the above background technology. Summary of the Invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an air multiplication and extrusion ventilation device for tunnel construction, characterized in that it includes multiple sections of flexible pipes, wherein two adjacent flexible pipes are connected by a connecting assembly, and the connecting assembly includes at least a booster, and extrusion ventilation can be achieved through multiple boosters.

[0005] Furthermore, preferably, the connection assembly further comprises two connecting pipes, the two connecting pipes being used to connect to the flexible pipes opposite thereto respectively, the two connecting pipes being connected by a locking assembly, and the supercharger being embedded in the locking assembly.

[0006] Further, as a preference, the locking assembly includes an upper arc plate, a lower arc plate, a hinge and a buckle, wherein the upper arc plate and the lower arc plate are hingedly connected by a hinge, and holes are provided on both the upper arc plate and the lower arc plate, wherein the holes on the lower arc plate are used to provide space for the supercharger, and the upper arc plate and the lower arc plate are also connected by a buckle.

[0007] Furthermore, preferably, the air inlet end of the flexible tube is also provided with natural air duct and cooling air duct components at intervals.

[0008] Furthermore, preferably, the cooling air duct assembly includes an air inlet pipe and an air outlet pipe, wherein a fan is provided between the air inlet pipe and the air outlet pipe, and a cooling pipe is provided on the outer sleeve of the air outlet pipe, and the cooling pipe adopts a circulation assembly to circulate and supply cold liquid.

[0009] Furthermore, preferably, the air outlet pipe located inside the cooling pipe is made of a heat-conducting material.

[0010] Further, as a preference, the circulation component includes a tube body, a heat exchange tube and a cold supply warehouse, wherein the tube body includes a first tube body and a second tube body, the first tube body and the second tube body are connected by a heat exchange tube, the heat exchange tube is located in the cold supply warehouse, the first tube body and the second tube body are respectively connected to the cooling tube, and a first pump body is provided on the first tube body, and a second pump body is provided on the second tube body.

[0011] Furthermore, as a preference, the air outlet pipe is provided with a plurality of through holes, and the through holes are blocked by flexible heat exchange plates;

[0012] It also includes a controller, which can control the first pump body and the second pump body, thereby adjusting the liquid pressure in the cooling pipe. The controller can also control the fan, thereby adjusting the gas pressure in the air outlet pipe.

[0013] Furthermore, as a preference, ice cubes are filled in the cooling bin, the bottom of the cooling bin is a through-hole structure and is connected to a liquid storage bin, the liquid storage bin is connected to a water supply assembly, and the water supply assembly can supply water to the air inlet pipe.

[0014] Further, as a preference, the water supply assembly includes a bin body, a water equalizing plate and a cloth body, wherein the bin body is embedded in the air inlet duct, the two sides of the bin body are connected, a water equalizing plate is installed on the upper side, a cloth body is arranged below the water equalizing plate, the bottom of the cloth body is connected to the bottom of the bin body, and the bin body is connected to the liquid storage bin.

[0015] Compared with the prior art, the present invention provides an air multiplication and pressure-extraction ventilation device for tunnel construction, which has the following beneficial effects:

[0016] In the embodiment of the present invention, multi-stage air amplification technology is used to suck the polluted air into the pipe, and the polluted air is discharged from the tunnel after multi-stage acceleration. The soft air duct can continue to be used from the bladeless fan to the tunnel entrance, avoiding the defect that the entire exhaust ventilation section requires a hard air duct. In addition, the cooling pipe and the circulation component are combined to effectively cool the air outlet pipe, thereby realizing the provision of comfortable air. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an air multiplication and pressure-extraction ventilation device for tunnel construction;

[0018] Figure 2 This is a schematic diagram of the structure of a flexible pipe and connection components in an air multiplication and pressure-extraction ventilation device for tunnel construction;

[0019] Figure 3 This is a schematic diagram of the structure of the connecting components in an air multiplication and pressure-extraction ventilation device for tunnel construction;

[0020] Figure 4This is a schematic diagram of the three-dimensional structure of the connecting components in an air multiplication and pressure-extraction ventilation device for tunnel construction;

[0021] Figure 5 This is a schematic diagram of the structure of a cooling air duct assembly in an air multiplication and pressure-extraction ventilation device for tunnel construction;

[0022] In the picture:

[0023] 100. Flexible pipe;

[0024] 200, connecting assembly; 210, connecting pipe; 220, locking assembly; 230, supercharger; 221, upper arc plate; 222, lower arc plate; 223, hole body; 224, hinge; 225, buckle;

[0025] 300, natural air duct;

[0026] 400, cooling duct assembly; 410, air inlet pipe; 420, air outlet pipe; 430, fan; 440, cooling pipe; 450, circulation assembly; 451, pipe body; 452, heat exchange pipe; 453, first pump body; 454, cold supply bin; 455, second pump body; 460, liquid storage bin; 470, water supply assembly; 471, bin body; 472, water equalizing plate; 473, fabric body; 480, flexible heat exchange plate. DETAILED DESCRIPTION

[0027] See also Figures 1 to 5 In an embodiment of the present invention, an air multiplication and extrusion ventilation device for tunnel construction includes a plurality of flexible tubes 100, wherein two adjacent flexible tubes 100 are connected by a connecting assembly 200, and the connecting assembly 200 includes at least a booster 230, and the multiple boosters 230 can achieve extrusion ventilation.

[0028] It should be noted that, in the prior art, a forced-in ventilation method is often adopted, wherein the fan and the starting device are installed at a fresh air location 30m away from the tunnel entrance. The fan presses the fresh air flow through the air duct to the excavation working face, and the polluted air is discharged along the tunnel. This ventilation method adopts a flexible air duct, which is relatively low in cost. However, the polluted air will pass through the entire tunnel and be discharged out of the cave. In addition, when exhaust ventilation is adopted, the fan and the pneumatic device are generally installed downwind 30m away from the tunnel entrance. The fresh air flow flows into the tunnel and the polluted air is extracted by the fan through the air duct. This ventilation method directly extracts the polluted air from the working face out of the cave through the air duct, ensuring the clean air of the entire tunnel. However, a rigid air duct is required. In this embodiment, a flexible air duct is adopted for ventilation in a forced-out manner, which can effectively ensure the clean air of the entire tunnel and reduce the investment in equipment. When a flexible tube is adopted as a ventilation duct, a plurality of boosters 230 are provided on the flexible tube.

[0029] The supercharger 230 is preferably a bladeless supercharger fan;

[0030] In this embodiment, Figure 2-4 The connecting assembly 200 further includes two connecting pipes 210 , which are used to connect the flexible pipes 100 opposite thereto respectively. The two connecting pipes 210 are connected by a locking assembly 220 , in which the supercharger 230 is embedded.

[0031] Furthermore, the locking assembly 220 includes an upper arc plate 221, a lower arc plate 222, a hinge 224 and a buckle 225, wherein the upper arc plate and the lower arc plate are hinged by the hinge 224, and holes 223 are provided on the upper arc plate 221 and the lower arc plate 222, wherein the hole on the lower arc plate is used to provide space for the supercharger 230, and the upper arc plate and the lower arc plate are also connected by a buckle.

[0032] It should be noted that the hole on the lower arc plate is used to provide space for the supercharger 230, and the hole on the upper arc plate can be connected to the installation pipe, thereby facilitating the positioning and installation of the flexible pipe. In addition, the bladeless supercharger fan may include an annular air outlet, a cylindrical connecting portion, and an air inlet, wherein the cylindrical connecting portion serves as a connecting bridge, connecting the annular air outlet and the air inlet, and the annular air outlet is located between the two connecting pipes 210, and the cylindrical connecting portion passes through the hole on the lower arc plate;

[0033] It's also worth explaining that the bladeless booster fan blows air out of a 1.0 mm wide slit that rotates around a circular amplifier. Because the air is forced through this circle, the volume of air passing through it increases 15 times, reaching speeds of up to 35 km / h. The air flow of the air multiplier is smoother than that produced by a conventional fan.

[0034] In this embodiment, a natural air duct 300 and a cooling air duct assembly 400 are further spaced apart at the air inlet end of the flexible tube 100 .

[0035] Among them, such as Figure 5 The cooling duct assembly 400 includes an air inlet duct 410 and an air outlet duct 420, wherein a fan 430 is provided between the air inlet duct 410 and the air outlet duct 420, and a cooling duct 440 is provided on the outside of the air outlet duct 420, and the cooling duct 440 adopts a circulation assembly 450 to circulate and supply cold liquid.

[0036] The cooling pipe 440 and the circulation component 450 cooperate to effectively cool the air outlet pipe, thereby providing refreshing air.

[0037] As a preferred embodiment, the air outlet pipe 420 located inside the cooling pipe 440 is made of a heat-conducting material.

[0038] As a preferred embodiment, the circulation component 450 includes a tube body 451, a heat exchange tube 452 and a cold supply warehouse 454, wherein the tube body includes a first tube body and a second tube body, the first tube body and the second tube body are connected by a heat exchange tube 452, the heat exchange tube 452 is located in the cold supply warehouse 454, the first tube body and the second tube body are respectively connected to the cooling tube 440, and a first pump body 453 is provided on the first tube body, and a second pump body 454 is provided on the second tube body.

[0039] As a preferred embodiment, the air outlet pipe 420 is provided with a plurality of through holes, which are blocked by a flexible heat exchange plate 480;

[0040] It also includes a controller, which can control the first pump body and the second pump body, and thus can adjust the liquid pressure in the cooling pipe 440. The controller can also control the fan, and thus can adjust the gas pressure in the air outlet pipe 420.

[0041] It should be explained that the controller can control the first pump body and the second pump body, thereby controlling the flow rate and flow velocity of the liquid pumped into the cooling pipe 440, as well as the flow rate and flow velocity of the liquid pumped out of the cooling pipe 440, thereby adjusting the liquid pressure in the cooling pipe 440. The controller can also control the fan, thereby adjusting the gas pressure in the air outlet pipe 420.

[0042] In this way, when the outside air is hotter, the gas pressure can be reduced and the liquid pressure in the cooling tube 440 can be increased, so that sufficient heat exchange and cooling can be achieved. At this time, the flexible heat exchange plate 480 can be deformed inward to further reduce the gas flow rate and improve the heat exchange effect.

[0043] Correspondingly, when there is no need to fully cool the external air, the gas pressure can be increased and the liquid pressure in the cooling tube 440 can be reduced, so that sufficient air supply can be achieved. At this time, the flexible heat exchange plate 480 can be deformed outward to further reduce the liquid flow rate and reduce the heat exchange effect.

[0044] In this embodiment, ice cubes are loaded into the cold supply bin 454 , the bottom of the cold supply bin is a through-hole structure and is connected to a liquid storage bin 460 , the liquid storage bin 460 is connected to a water supply assembly 470 , and the water supply assembly 470 can supply water to the air inlet pipe 410 .

[0045] Furthermore, the water supply assembly 470 includes a bin body 471, a water balancing plate 472 and a cloth body 473, wherein the bin body 472 is embedded in the air inlet pipe 410, the two sides of the bin body 471 are through-connected, a water balancing plate is installed on the upper side, a cloth body 473 is arranged below the water balancing plate 472, the bottom of the cloth body 473 is connected to the bottom of the bin body, and the bin body 473 is connected to the liquid storage bin 460.

[0046] In addition, the liquid storage tank 460 may also be provided with a valve body for controlling the flow.

[0047] The water distribution plate can be an arc-shaped plate with a plurality of micropores on its surface and a water-absorbing pad attached to its lower surface.

[0048] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An air multiplication and extrusion ventilation device for tunnel construction, characterized by: The invention comprises a plurality of flexible pipes, wherein two adjacent flexible pipes are connected by a connecting assembly, wherein the connecting assembly at least comprises a supercharger, and the multiple superchargers can realize pressure-extrusion ventilation; The air inlet end of the flexible pipe is also provided with natural air duct and cooling air duct components at vertical intervals in the air supply direction; The cooling air duct assembly includes an air inlet pipe and an air outlet pipe, wherein a fan is provided between the air inlet pipe and the air outlet pipe, and a cooling pipe is provided on the outer sleeve of the air outlet pipe, and the cooling pipe adopts a circulation assembly to circulate the cooling liquid; The circulation assembly includes a tube body, a heat exchange tube and a cold supply bin, wherein the tube body includes a first tube body and a second tube body, the first tube body and the second tube body are connected by a heat exchange tube, the heat exchange tube is located in the cold supply bin, the first tube body and the second tube body are respectively connected to the cooling tube, and the first tube body is provided with a first pump body, and the second tube body is provided with a second pump body; The cooling bin is filled with ice cubes, the bottom of which is a through-hole structure and is connected to a liquid storage bin, which is connected to a water supply assembly, and the water supply assembly can supply water to the air inlet pipe; The air outlet pipe is provided with a plurality of through holes, which are blocked by flexible heat exchange plates. When the outside air needs to be cooled, the gas pressure is reduced and the liquid pressure in the cooling tube is increased to achieve sufficient heat exchange and cooling. At this time, the flexible heat exchange plate deforms inward, further reducing the gas flow rate and improving the heat exchange effect. When there is no need to fully cool the outside air, the gas pressure is increased to reduce the liquid pressure in the cooling pipe to achieve sufficient air supply. At this time, the flexible heat exchange plate deforms outward, further reducing the liquid flow rate and the heat exchange effect. The ventilation device also includes a controller, which can control the first pump body and the second pump body, thereby adjusting the liquid pressure in the cooling pipe. The controller can also control the fan, thereby adjusting the gas pressure in the air outlet pipe.

2. The air multiplication and pressure-extraction ventilation device for tunnel construction according to claim 1, characterized in that: The connecting assembly further comprises two connecting pipes, which are used to connect to the flexible pipes opposite thereto respectively. The two connecting pipes are connected by a locking assembly, in which the supercharger is embedded.

3. The air multiplication and pressure-extraction ventilation device for tunnel construction according to claim 2, characterized in that: The locking assembly includes an upper arc plate, a lower arc plate, a hinge and a buckle, wherein the upper arc plate and the lower arc plate are hingedly connected by a hinge, and both the upper arc plate and the lower arc plate are provided with holes, wherein the holes on the lower arc plate are used to provide space for the supercharger, and the upper arc plate and the lower arc plate are also connected by a buckle.

4. The air multiplication and pressure-extraction ventilation device for tunnel construction according to claim 1, characterized in that: The air outlet pipe inside the cooling pipe is made of heat-conducting material.

5. The air multiplication and pressure-extraction ventilation device for tunnel construction according to claim 1, characterized in that: The water supply assembly includes a bin body, a water distribution plate and a cloth body, wherein the bin body is embedded in the air inlet pipe, the two sides of the bin body are connected, the water distribution plate is installed on the upper side, the cloth body is arranged below the water distribution plate, the bottom of the cloth body is connected to the bottom of the bin body, and the bin body is connected to the liquid storage bin.

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