System for Separating Mechanical Wind and Piston Wind in Subway Tunnels

Abstract

The present invention discloses a system for separating mechanical wind and piston wind in a subway tunnel, comprising an installation platform arranged on a platform layer, wherein the installation platform is arranged in a ventilation room, and a middle partition wall arranged along the vehicle travel direction is arranged in the middle of the installation platform to separate the installation platform into two sub-platforms; tunnel ventilators are respectively installed on the two sub-platforms; mechanical piston air valves are respectively arranged on the side walls of the ventilation room corresponding to the positions of the two sub-platforms; the present invention can be arranged in the main body of the station, and the distance between the tunnel ventilation piston air duct is relatively short, which is conducive to better utilizing the energy-saving ventilation effect of the piston effect; pipelines, cables, etc. that must be arranged in the tunnel can be laid in the cable interlayer of the installation platform, thereby improving the comprehensive utilization rate of various facilities, effectively reducing the volume occupied by various facilities in the tunnel space, and thus improving the landscape effect of the tunnel.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel ventilation, and particularly to a system for separating mechanical air and piston air in a subway tunnel. Background Art

[0002] For the tunnel ventilation system arranged in a subway tunnel, the commonly used technology is as follows: In a conventional tunnel ventilation system, one piston air duct and one mechanical air duct are respectively arranged for the up-line and down-line. Due to the influence of the size of tunnel fan equipment, a certain length is required for the layout; for the tunnel ventilation system arranged perpendicular to the line direction in the auxiliary building and the tunnel ventilation system arranged perpendicular to the line direction in the main body of the station, its own tunnel piston air duct and machine room will be formed in the station, which will increase the scale of the station: the length or the scope of the working shaft. And the scheme of arranging the tunnel ventilation machine room on the platform layer, which has a relatively short air duct length relative to the piston air, but directly exposes the tunnel section to the range of the piston air shaft, is not conducive to the safety and cleanliness of the tunnel, and there is a risk of sundries falling into the interval tunnel, etc. These practices are not conducive to installation construction first, nor to subsequent inspection and maintenance.

[0003] Therefore, the problem of how to not only meet the requirements of tunnel ventilation, have smooth air flow organization and equipment maintenance needs, but also reduce the scale of the station and ensure the safety of the tunnel section has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the technical object of the present invention is to separate the mechanical air and piston air in the subway tunnel, so as to achieve the effects of not only meeting the requirements of tunnel ventilation, having smooth air flow organization and equipment maintenance needs, but also reducing the scale of the station and ensuring the safety of the tunnel section.

[0005] To achieve the above technical object, the present invention provides a system for separating mechanical air and piston air in a subway tunnel, including an installation platform arranged on the platform layer, the installation platform is arranged in a ventilation machine room, a middle partition wall arranged along the vehicle running direction is provided in the middle of the installation platform, separating the installation platform into two sub-platforms; tunnel ventilators are respectively installed on the two sub-platforms; mechanical piston air valves are respectively arranged on the side walls of the ventilation machine room corresponding to the two sub-platforms.

[0006] On the top of the tunnel of the down-line and the top of the tunnel of the up-line, a down-line piston air hole and an up-line piston air hole are respectively provided; at the top position of the ventilation machine room, a common mechanical piston air hole is provided.

[0007] On the concourse level, an up-line piston air shaft is provided at a misaligned position with respect to the up-line piston air hole, and a down-line piston air shaft is provided corresponding to the position of the shared mechanical piston air hole; at the position between the down-line piston air shaft and the up-line piston air shaft on the concourse level, an exhaust air shaft communicating with the ground is provided.

[0008] Preferably, a cable mezzanine is provided at the bottom of the installation platform.

[0009] Preferably, a spare piston air valve is installed on the middle partition wall.

[0010] Preferably, mufflers are respectively provided at the air inlet and outlet ends of the tunnel ventilator on the installation platform.

[0011] Preferably, an installation foundation for installing the tunnel ventilator and the muffler is further provided on the platform slab of the concourse level.

[0012] Preferably, the tunnel ventilator is connected to the corresponding installation foundation through shock absorbers.

[0013] Preferably, a maintenance door is provided on the middle partition wall; a maintenance escalator is provided at the position of the installation platform on the platform level; a maintenance manhole is provided on the platform slab of the platform level corresponding to the position of the installation platform.

[0014] Preferably, the up-line piston air hole is connected to the up-line piston air shaft through a vertical air defense seal; the down-line piston air shaft is connected to the down-line piston air hole through a piston air valve.

[0015] Preferably, lifting hooks are respectively embedded at the positions corresponding to the tunnel ventilator on the installation platform.

[0016] Preferably, air hole railings are respectively provided on the outer peripheries of the down-line piston air hole and the shared mechanical piston air hole.

[0017] Advantages of the present invention:

[0018] Due to the above structural design of the present invention, this system can be installed in the main body of the station, and the tunnel ventilation piston air duct is relatively short, which is beneficial to better utilize the energy-saving ventilation effect of the piston effect; pipelines, cables, etc. that must be installed in the tunnel can be laid in the cable mezzanine of the installation platform, improving the comprehensive utilization rate of various facilities, effectively reducing the occupied volume of various facilities in the tunnel space, and further enhancing the landscape effect of the tunnel.

[0019] Furthermore, the present invention can reduce the area of the ventilation machine room for the auxiliary machine room, avoid the direct connection between the piston air hole and the tunnel section, and improve the safety and the convenience of equipment installation. Description of the Drawings

[0020] Figure 1 Schematic layout structure diagram of an embodiment of the present invention on the platform floor;

[0021] Figure 2 Schematic layout structure diagram of an embodiment of the present invention on the concourse floor;

[0022] Figure 3 Schematic diagram of the ventilation principle of an embodiment of the present invention;

[0023] Figure 4 Schematic structure diagram of a partial section of an embodiment of the present invention.

[0024] In the figure: 1 First mechanical piston air valve, 2 First air valve installation base, 3 First muffler, 4 First muffler installation base, 5 Maintenance escalator, 6 Downline piston air hole, 7 Downline tunnel ventilator, 8 First embedded lifting hook, 9 Downline tunnel ventilator installation base, 10 Second muffler, 11 Second muffler base, 12 First piston air valve, 13 Second air valve installation base, 14 Spare piston air valve, 15 Third air valve installation base, 16 Second piston air valve, 17 Fourth air valve installation base, 18 Upline piston air hole, 19 Third muffler, 20 Third muffler installation base, 21 Maintenance manhole, 22 Second embedded lifting hook, 23 Upline tunnel ventilator, 24 Upline tunnel ventilator installation base, 25 Second mechanical piston air valve, 26 Fifth air valve installation base, 27 Fourth muffler, 28 Fourth muffler installation base, 29 Middle partition wall, 30 Common mechanical piston air hole, 31 Maintenance door, 32 Downline piston air shaft, 33 Third piston air valve, 34 Sixth air valve installation base, 35 First piston air hole railing, 36 Exhaust air shaft, 37 Upline piston air shaft, 38 Vertical civil air defense seal, 39 Fourth piston air valve, 40 Second piston air hole railing. Detailed implementation manners

[0025] The following will further illustrate the concept, specific structure and technical effects of the present invention in conjunction with the accompanying drawings to fully understand the purpose, features and effects of the present invention.

[0026] Embodiment:

[0027] As Figures 1 - 4As shown in the figure, a system for separating mechanical air and piston air in a subway tunnel includes an installation platform arranged on the platform layer. The installation platform is arranged in a ventilation machine room. A middle partition wall 29 arranged along the vehicle running direction is provided in the middle of the installation platform, separating the installation platform into two sub-platforms; a down-line tunnel ventilator 7 and an up-line tunnel ventilator 23 are respectively installed on the two sub-platforms; corresponding to the positions of the two sub-platforms on the side wall of the ventilation machine room, a first piston air valve 12 and a second piston air valve 16 are respectively provided; corresponding to the positions of the first piston air valve 12 and the second piston air valve 16 on the platform slab, a second air valve installation base 13 and a fourth air valve installation base 17 are respectively provided; a spare piston air valve 14 is installed on the middle partition wall 29, and a third air valve installation base 15 is correspondingly provided on the platform slab.

[0028] At the top of the down-line tunnel and the top of the up-line tunnel, a down-line piston air hole 6 and an up-line piston air hole 18 are respectively provided; at the top position of the ventilation machine room, a common mechanical piston air hole 30 is provided;

[0029] On the concourse level, an up-line piston air shaft 37 is provided at a misaligned position with respect to the up-line piston air hole 18, and a down-line piston air shaft 32 is provided corresponding to the position of the common mechanical piston air hole 30; on the concourse level, at the position between the down-line piston air shaft 32 and the up-line piston air shaft 37, an exhaust air shaft 36 communicating with the ground is provided, and the distance between the above three groups of air shafts is greater than 5 meters.

[0030] More specifically, at the inlet and outlet ends of the down-line tunnel ventilator 7 on the installation platform, a first muffler 3 and a second muffler 10 are respectively provided, and a first muffler installation base 4 and a second muffler installation base 11 are correspondingly provided on the platform slab; a first mechanical piston air valve 1 is provided at the outlet end of the down-line tunnel ventilator 7, and a first air valve installation base 2 is configured; at the inlet and outlet ends of the up-line tunnel ventilator 23 on the installation platform, a fourth muffler 27 and a third muffler 19 are respectively provided, and a fourth muffler installation base 28 and a third muffler installation base 20 are correspondingly provided on the platform slab; a second mechanical piston air valve 25 is provided at the outlet end of the up-line tunnel ventilator 23, and a fifth air valve installation base 26 is configured, and a down-line tunnel ventilator installation base 9 and an up-line tunnel ventilator installation base 24 are correspondingly provided on the platform slab.

[0031] The down-line tunnel ventilator 7 and the down-line tunnel ventilator installation base 9, and the up-line tunnel ventilator 23 and the up-line tunnel ventilator installation base 24 are respectively connected by shock absorbers.

[0032] An inspection escalator 5 is provided at the position of the installation platform on the platform layer; an inspection manhole 21 is provided on the platform slab of the platform layer corresponding to the position of the installation platform.

[0033] The piston air holes 18 on the up-line are connected to the piston air shaft 37 on the up-line through a vertical air defense seal 38 and a fourth piston air valve 39; the piston air shaft 32 on the down-line is connected to the piston air holes 6 on the down-line through a third piston air valve 33, and a sixth air valve installation base 34 corresponding to the third piston air valve 33 is provided on the platform board.

[0034] At the positions corresponding to the tunnel ventilators on the installation platform, a first embedded lifting hook 8 and a second embedded lifting hook 22 are respectively embedded. The lifting hooks are connected to the structural steel bars in the slab and can bear a weight of 5 tons.

[0035] Air hole railings are respectively arranged on the outer peripheries of the piston air holes 6 on the down-line and the common mechanical piston air holes 30, which are the first piston air hole railing 35 and the second piston air hole railing 40 respectively.

[0036] Furthermore, for the convenience of cable laying, a cable mezzanine is provided at the bottom of the installation platform, which can be used for cable laying; the installation platform is open or provided with a maintenance railing to facilitate equipment installation, maintenance and repair.

[0037] For the convenience of equipment maintenance, a maintenance door 31 is provided on the middle partition wall 29, which can lead to the two sub-platforms of the installation platform. The wall strength and durability of the middle partition wall 29 can resist the change of positive and negative pressures in the tunnel.

[0038] In some embodiments, the layouts of the up-line and down-line of the subway can be interchanged.

[0039] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. A system for separating mechanical air and piston air in a subway tunnel, including an installation platform arranged on the platform layer, Characterized in that: The installation platform is arranged in the ventilation machine room. A middle partition wall arranged along the vehicle running direction is provided in the middle of the installation platform, separating the installation platform into two sub-platforms; Tunnel ventilators are respectively installed on the two sub-platforms; Mechanical piston air valves are respectively provided on the side walls of the ventilation machine room corresponding to the two sub-platforms. On the top of the tunnel of the down-line and the top of the tunnel of the up-line, a down-line piston air hole and an up-line piston air hole are respectively provided; At the top position of the ventilation machine room, a common mechanical piston air hole is provided. On the concourse layer, an up-line piston air shaft is provided at a position misaligned with the up-line piston air hole, and a down-line piston air shaft is provided corresponding to the position of the common mechanical piston air hole; At the position between the down-line piston air shaft and the up-line piston air shaft on the concourse layer, an exhaust air shaft communicating with the ground is provided.

2. The system for separating mechanical air and piston air in a subway tunnel according to claim 1, Characterized in that: A cable mezzanine is provided at the bottom of the installation platform.

3. The system for separating mechanical air and piston air in a subway tunnel according to claim 1, Characterized in that: A spare piston air valve is installed on the middle partition wall.

4. The system for separating mechanical air and piston air in a subway tunnel according to claim 1, Characterized in that: Silencers are respectively provided at the inlet and outlet ends of the tunnel ventilator on the installation platform.

5. The system for separating mechanical air and piston air in a subway tunnel according to claim 4, Characterized in that: Installation bases for installing the tunnel ventilator and the silencer are further provided on the platform slab of the concourse layer.

6. The system for separating mechanical air and piston air in a subway tunnel according to claim 5, Characterized in that: The tunnel ventilator is connected to the corresponding installation base through shock absorbers.

7. The system for separating mechanical air and piston air in a subway tunnel according to claim 1, Characterized in that: An inspection door is provided on the middle partition wall; An inspection escalator is provided on the platform layer at the position of the installation platform; An inspection manhole is provided on the platform slab of the platform layer corresponding to the position of the installation platform.

8. The system for separating mechanical air and piston air in a subway tunnel according to claim 1, Characterized in that: The up-line piston air hole is connected to the up-line piston air shaft through a vertical air defense seal; The down-line piston air shaft is connected to the down-line piston air hole through a piston air valve.

9. The system for separating mechanical air and piston air in a subway tunnel according to claim 1, Characterized in that: Hooks are respectively embedded at the positions corresponding to the tunnel ventilators on the installation platform.

10. The system for separating mechanical air and piston air in a subway tunnel according to claim 1, Characterized in that: Air hole railings are respectively provided on the outer peripheries of the down-line piston air hole and the common mechanical piston air hole.

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