Air curtain jet pipe and movable simple tunnel air curtain generating device

Abstract

The utility model relates to the technical field of tunnel construction ventilation, and particularly discloses an air curtain jet pipe and a movable simple tunnel air curtain generating device. An air curtain jet flow cavity is formed in the air curtain jet flow pipe, an air inlet communicated with the air curtain jet flow cavity is formed in one end of the air curtain jet flow pipe, a plurality of flow guide rings of different sizes are arranged on the inner wall of the air curtain jet flow pipe, and air passing channels are formed in the middles of the flow guide rings. And a plurality of streamline flow guide rings with different sizes are arranged, so that the stable air curtain can be maintained at a farther distance, and the isolation effect of the air curtain on harmful gas and dust is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction ventilation, in particular to an air curtain jet pipe and a movable simple tunnel air curtain generating device. Background Art

[0002] During tunnel construction, a large amount of harmful gases and dust are generated in the construction area inside the tunnel. Tunnel air curtains are generally used to prevent the spread of harmful gases and dust.

[0003] Existing tunnel air curtains are typically installed in fixed locations to create a wind curtain for insulation. These require repeated installation and removal as construction progresses, resulting in limited flexibility. A simplified air curtain, consisting of a fan and an air curtain jet chamber, can address this complex installation and removal issue. The air curtain jet chamber is a tubular cavity with multiple air outlets. However, existing air curtain jet chambers are mostly linear in design, with the fan blowing air in from one side. This causes the airflow velocity to decay rapidly within the duct, placing higher demands on the fan's power in long ducts. Utility Model Content

[0004] The utility model provides an air curtain jet pipe and a movable simple tunnel air curtain generating device, which can overcome certain defects of the prior art.

[0005] According to the utility model, a wind curtain jet tube is formed with a wind curtain jet cavity inside, which includes an air inlet formed at one end of the wind curtain jet tube and connected to the wind curtain jet cavity, and a plurality of guide rings of different sizes are provided on the inner wall of the wind curtain jet tube, and an air passage is formed in the middle of the guide ring.

[0006] Through the utility model, when a wind curtain is needed, air flow is blown in from the air inlet connected to the wind curtain jet cavity to generate a wind curtain. The air flow changes its direction after passing through the guide ring, which can slow down the attenuation speed of the air flow in the pipeline and improve the effect of the wind curtain.

[0007] Preferably, the wind passage includes a windward surface and a leeward surface of the guide ring, the windward surface of the guide ring is an outwardly convex arc surface, and the leeward surface is a plane.

[0008] According to the utility model, the windward side and the leeward side of the wind passage are designed to be streamlined, which reduces the speed loss of the airflow in the wind passage and further improves the wind curtain effect.

[0009] Preferably, a plurality of guide rings of different sizes are evenly arranged along the axial direction of the air curtain jet tube, and the minimum inner diameters of the plurality of guide rings of different sizes gradually decrease from the air inlet of the air curtain jet tube to the tail of the air curtain jet tube.

[0010] Through the utility model, the setting of guide rings of different sizes optimizes the problem of rapid attenuation of air flow velocity in the linear wind curtain jet cavity, slows down the wind speed attenuation, and can maintain a stable wind curtain at a longer distance when the power of the fan is the same, thereby improving the isolation effect of the wind curtain on harmful gases and dust.

[0011] Preferably, the air curtain jet tube is a hollow cylinder with multiple air outlets evenly arranged on the side, and the edges of the air outlets are rounded.

[0012] Through the utility model, the air outlets of the wind curtain jet tube are evenly distributed on its outer surface, and the aperture size and spacing are designed to facilitate the formation of an air curtain with uniform width and height; the edges of the air outlet are rounded to ensure smooth output of the airflow, prevent turbulence, and further increase the stability of the air curtain.

[0013] According to the utility model, a movable simple tunnel air curtain generating device includes an air curtain jet tube and a fan. The fan is arranged at the air inlet of the air curtain jet tube, and a movable adjustment bracket is provided below the fan and the air curtain jet tube.

[0014] With the present invention, when the construction area needs to be isolated, the adjustment bracket is moved to set the wind curtain generating device to the appropriate position and adjust the angle. The fan is started to generate airflow to blow into the wind curtain jet cavity. The airflow passes through multiple streamlined guide rings of different sizes and is ejected outward to form a uniform wind curtain. The setting of the movable adjustment bracket facilitates the movement and adjustment of the wind curtain generating device, greatly reducing the installation and disassembly time of traditional wind curtains. The fan uses a high-efficiency fan that can generate strong and stable airflow. The power and air volume of the fan are matched according to the size of the wind curtain jet tube and the required wind curtain height.

[0015] Preferably, the fan and the air curtain jet pipe are threadedly connected, and a sealing ring is provided at the connection.

[0016] Through the utility model, the connection between the fan and the wind curtain jet tube is designed to be a threaded connection. The operator only needs to rotate the wind curtain jet tube or the fan to lock or loosen it, which reduces the installation and disassembly time of the fan and the wind curtain jet tube and facilitates the maintenance of the device. The connection between the fan and the wind curtain jet tube is sealed with an annular sealing ring. When the fan is connected to the wind curtain jet tube, the sealing ring can fit tightly to the connection to ensure that the airflow does not leak at the interface. In order to further enhance the sealing performance, the sealing ring material is selected from wear-resistant rubber, which not only provides a good sealing effect, but also can resist moisture and chemical corrosion in the tunnel.

[0017] Preferably, a clamp with bolts is provided between the air curtain jet tube and the adjustment bracket, and the clamp with bolts is nested in the outside of the air curtain jet tube and fixes the air curtain jet tube to the top of the adjustment bracket.

[0018] By the utility model, a bolt clamp is provided, which can be quickly fixed and loosened, making it easy to install and replace the wind curtain jet tube and reducing maintenance time; the provision of the bolt clamp also facilitates the angle adjustment of the wind curtain jet tube, which can be easily adjusted by loosening the bolt to adapt to protection in different directions; the bolt clamp can also provide a firm connection, increase the structural stability between the wind curtain jet tube and the adjustment bracket, and avoid structural loosening due to vibration and the like; the bolt clamp can adapt to wind curtain jet tubes of different sizes and shapes and has good versatility.

[0019] Preferably, the adjustment bracket includes adjustment rods vertically arranged below the bolt clamps, corresponding hollow support vertical rods vertically arranged below the adjustment rods, reinforcement cross rods arranged between the support vertical rods, a base arranged below the support vertical rods, and reinforcement diagonal braces arranged between the base and the support vertical rods.

[0020] Through the utility model, by setting the supporting vertical rods, reinforcing horizontal rods and reinforcing diagonal braces, the overall structure is more stable, can resist external vibrations and impacts, and maintain the stability of the air curtain jet tube; the design of the hollow supporting vertical rods ensures the strength of the structure while reducing its own weight, facilitating transportation and reducing manufacturing costs.

[0021] Preferably, a first through hole is provided on the supporting vertical rod, a plurality of second through holes with the same diameter as the first through holes are provided on the adjusting rod, and fastening bolts passing through the first through holes and the second through holes are provided between the supporting vertical rod and the adjusting rod respectively.

[0022] Through the utility model, the cooperation of the first through hole and the multiple second through holes allows the adjustment rod to accurately adjust the position in the vertical direction, and the height of the air curtain jet tube can be adjusted by selecting different hole positions; the bolt connection provides a strong connection method, enhances the structural strength between the adjustment rod and the supporting vertical rod, and improves the stability of the entire adjustment bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the movable simple tunnel air curtain generating device in Example 2;

[0024] Figure 2 Schematic diagram of the cross section of the air curtain jet cavity in Example 1;

[0025] Figure 3 Schematic diagram of the fan and air curtain jet cavity in Example 2;

[0026] Figure 4 This is a schematic diagram of the adjustment bracket in Example 2;

[0027] Figure 5 This is a schematic diagram of part A in Example 1;

[0028] Figure 6 This is a schematic diagram of part B in Example 1;

[0029] Figure 7 Schematic side view of the air curtain jet cavity in Example 1;

[0030] Figure 8 Schematic diagram of wind speed inside the linear wind curtain jet cavity in Example 1;

[0031] Figure 9 Schematic diagram of the wind speed inside the wind curtain jet cavity with a streamlined guide ring in Example 1. DETAILED DESCRIPTION

[0032] In order to further understand the content of the present invention, the present invention is described in detail with reference to the embodiments. It should be understood that the embodiments are merely for explanation of the present invention and are not intended to limit the present invention.

[0033] Example 1

[0034] like Figure 1-9 As shown, this embodiment provides a wind curtain jet tube, in which a wind curtain jet cavity 220 is formed. The wind curtain jet tube 120 includes an air inlet 230 formed at one end thereof and connected to the wind curtain jet cavity 220. A plurality of guide rings 210 of different sizes are provided on the inner wall of the wind curtain jet tube 120, and an air passage 240 is formed in the middle of the guide ring 210.

[0035] Through this embodiment, Figure 9 As shown, when a wind curtain is needed, air is blown in from the air inlet 230 connected to the wind curtain jet cavity 220 to generate a wind curtain. The air flow changes direction after passing through the guide ring 210, which can slow down the attenuation speed of the air flow in the pipeline and improve the effect of the wind curtain.

[0036] In this embodiment, the air passage 240 includes a windward surface 250 and a leeward surface 260 of the guide ring. The windward surface 250 of the guide ring 210 is an outwardly convex arc surface, and the leeward surface 260 is a flat surface.

[0037] According to this embodiment, the windward surface 250 and the leeward surface 260 of the air passage 240 are designed to be streamlined, thereby reducing the speed loss of the airflow in the air passage 240 and further improving the wind curtain effect.

[0038] In this embodiment, a plurality of guide rings 210 of different sizes are evenly arranged along the axial direction of the air curtain jet tube 120 and the minimum inner diameters of the guide rings 210 of different sizes gradually decrease from the air inlet 230 of the air curtain jet tube 120 to the tail of the air curtain jet tube.

[0039] Through this embodiment, Figure 8-9As shown, the setting of guide rings 210 of different sizes optimizes the problem of rapid attenuation of air flow velocity in the linear wind curtain jet cavity 220, slows down the wind speed attenuation, and can maintain a stable wind curtain at a longer distance when the power of the fan is the same, thereby improving the isolation effect of the wind curtain on harmful gases and dust.

[0040] In this embodiment, the air curtain jet tube 120 is a hollow cylinder, and a plurality of air outlets 310 are evenly arranged on the side surface, and the edges of the air outlets 310 are rounded.

[0041] Through this embodiment, the air outlets 310 of the wind curtain jet tube are evenly distributed on its outer surface, and the aperture size and spacing are designed to facilitate the formation of a wind curtain with uniform width and height; the edges of the air outlets 310 are rounded to ensure smooth output of the airflow, prevent turbulence, and further increase the stability of the wind curtain.

[0042] Example 2

[0043] like Figure 1-9 As shown, this embodiment provides a movable simple tunnel air curtain generating device, which includes the air curtain jet tube 120 in Example 1, and also includes a fan 110, the fan 110 is arranged at the air inlet 230 of the air curtain jet tube 120, and a movable adjustment bracket 130 is provided under the fan 110 and the air curtain jet tube 120.

[0044] Through this embodiment, when it is necessary to isolate the construction area, the adjustment bracket 130 is moved to set the wind curtain generating device to a suitable position and adjust the angle, and the fan 110 is started to generate airflow to blow into the wind curtain jet cavity 220. The airflow passes through a plurality of streamlined guide rings 210 of different sizes and is ejected outward to form a uniform wind curtain. The setting of the movable adjustment bracket 130 facilitates the movement and adjustment of the wind curtain generating device, greatly reducing the installation and disassembly time of traditional wind curtains. The fan 110 uses a high-efficiency fan that can generate strong and stable airflow. The power and air volume of the fan 110 are matched according to the size of the wind curtain jet tube 120 and the required wind curtain height.

[0045] In this embodiment, the fan 110 and the air curtain jet pipe 120 are threadedly connected, and a sealing ring 320 is provided at the connection.

[0046] Through this embodiment, the connection between the fan 110 and the wind curtain jet tube 120 is designed to be a threaded connection. The operator only needs to rotate the wind curtain jet tube 120 or the fan 110 to lock or loosen it, which reduces the installation and disassembly time of the fan 110 and the wind curtain jet tube 120 and facilitates the maintenance of the device; the connection between the fan 110 and the wind curtain jet tube 120 is sealed with an annular sealing ring 320. When the fan 110 and the wind curtain jet tube 120 are connected, the sealing ring 320 can fit tightly to the connection to ensure that the airflow does not leak at the interface. In order to further enhance the sealing performance, the sealing ring 320 is made of wear-resistant rubber, which not only provides a good sealing effect, but also can resist moisture and chemical corrosion in the tunnel.

[0047] In this embodiment, a bolt clamp 410 is provided between the air curtain jet tube 120 and the adjustment bracket 130 . The bolt clamp 410 is nested outside the air curtain jet tube 120 and fixes the air curtain jet tube 120 to the top of the adjustment bracket 130 .

[0048] Through this embodiment, a bolt clamp 410 is provided, which can be quickly fixed and loosened, making it easy to install and replace the wind curtain jet tube 120, and reducing maintenance time; the provision of the bolt clamp 410 also facilitates the angle adjustment of the wind curtain jet tube 120, and it can be easily adjusted by loosening the bolts to adapt to protection in different directions; the bolt clamp 410 can also provide a firm connection, increase the structural stability between the wind curtain jet tube 120 and the adjustment bracket 130, and avoid structural loosening due to vibration and other reasons; the bolt clamp 410 can adapt to wind curtain jet tubes 120 of different sizes and shapes, and has good versatility.

[0049] In this embodiment, the adjustment bracket 130 includes adjustment rods 420 respectively arranged vertically below the clamp 410, corresponding hollow support vertical rods 430 are vertically provided below the adjustment rods 420, reinforcement cross rods 440 are provided between the support vertical rods 430, a base 450 is provided below the support vertical rods 430, and a reinforcement diagonal brace 460 is provided between the base 450 and the support vertical rods 430.

[0050] Through this embodiment, by setting the supporting vertical rod 430, the reinforcing horizontal rod 440 and the reinforcing diagonal brace 460, the overall structure is more stable, can resist external vibration and impact, and maintain the stability of the air curtain jet tube; the design of the hollow supporting vertical rod 430 ensures the strength of the structure while reducing its own weight, facilitating transportation and reducing manufacturing costs.

[0051] In this embodiment, each support vertical rod 430 has a first through hole 470, and the adjustment rod 420 is provided with multiple second through holes 480 with the same diameter as the first through holes 470, and fastening bolts 610 passing through the first through holes 470 and the second through holes 480 are correspondingly provided between the support vertical rod 430 and the adjustment rod 420.

[0052] Through this embodiment, the cooperation of the first through hole 470 and the multiple second through holes 480 allows the adjustment rod 420 to be precisely adjusted in the vertical direction, and the height of the air curtain jet tube 120 can be adjusted by selecting different hole positions; the bolt connection provides a strong connection method, enhances the structural strength between the adjustment rod 420 and the supporting vertical rod 430, and improves the stability of the entire adjustment bracket.

[0053] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0054] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The embodiments shown are only part of the embodiments of the present invention, and the actual structure is not limited to them. Therefore, if a person skilled in the art is inspired by the above and designs a structure and embodiment similar to the technical solution without creatively designing it without departing from the inventive purpose of the present invention, it shall fall within the scope of protection of the present invention.

Claims

1. An air curtain jet tube, having an air curtain jet cavity (220) formed therein, characterized in that: An air inlet (230) communicating with the air curtain jet cavity (220) is formed at one end of the air curtain jet tube (120). A plurality of guide rings (210) of different sizes are provided on the inner wall of the air curtain jet tube (120), and an air passage (240) is formed in the middle of the guide ring (210).

2. The air curtain jet tube according to claim 1, characterized in that: The wind passage (240) comprises a windward surface (250) and a leeward surface (260) of the guide ring. The windward surface (250) of the guide ring (210) is an outwardly convex arc surface, and the leeward surface (260) is a plane surface.

3. The air curtain jet tube according to claim 1, characterized in that: A plurality of guide rings (210) of different sizes are evenly arranged along the axial direction of the wind curtain jet tube (120), and the minimum inner diameters of the plurality of guide rings (210) of different sizes gradually decrease from the air inlet (230) of the wind curtain jet tube (120) to the tail of the wind curtain jet tube.

4. The air curtain jet tube according to claim 1, characterized in that: The air curtain jet pipe (120) is a hollow cylinder, with a plurality of air outlets (310) evenly arranged on the side thereof, and the edges of the air outlets (310) are rounded.

5. A movable simple tunnel air curtain generating device, characterized by: The invention comprises the wind curtain jet tube (120) as described in claims 1 to 4, and further comprises a fan (110), wherein the fan (110) is arranged at the air inlet (230) of the wind curtain jet tube (120), and a movable adjustment bracket (130) is provided below the fan (110) and the wind curtain jet tube (120).

6. The movable simple tunnel air curtain generating device according to claim 5, characterized in that: The fan (110) and the wind curtain jet pipe (120) are threadedly connected, and a sealing ring (320) is provided at the connection.

7. The movable simple tunnel air curtain generating device according to claim 5, characterized in that: A bolt clamp (410) is provided between the air curtain jet tube (120) and the adjustment bracket (130), and the bolt clamp (410) is nested outside the air curtain jet tube (120) and fixes the air curtain jet tube (120) to the top of the adjustment bracket (130).

8. The movable simple tunnel air curtain generating device according to claim 5, characterized in that: The adjustment bracket (130) includes adjustment rods (420) vertically arranged below the clamps (410), corresponding hollow support vertical rods (430) are vertically arranged below the adjustment rods (420), reinforcement cross rods (440) are arranged between the support vertical rods (430), a base (450) is arranged below the support vertical rods (430), and a reinforcement diagonal brace (460) is arranged between the base (450) and the support vertical rods (430).

9. The movable simple tunnel air curtain generating device according to claim 5, characterized in that: Each of the support vertical rods (430) has a first through hole (470), and the adjustment rod (420) is provided with a plurality of second through holes (480) having the same diameter as the first through holes (470). Fastening bolts (610) passing through the first through holes (470) and the second through holes (480) are correspondingly provided between the support vertical rods (430) and the adjustment rod (420).

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