CN212614831U

CN212614831U - Ventilation and smoke exhaust system for long tunnel excavation

Info

Publication number: CN212614831U
Application number: CN202021545027.6U
Authority: CN
Inventors: 金涛; 陈凯武; 俞帅宇; 赵大明; 冯蕾
Original assignee: Yushun Ecological Construction Co ltd
Current assignee: Yushun Ecological Construction Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-02-26
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a long tunnel excavation ventilation system of discharging fume, including mount and removal frame, the top fixedly connected with dryer of mount, be provided with the ventilation groove in the dryer, through fixed block fixedly connected with axial fan in the ventilation groove, the one end of dryer is provided with first protection network, and the dryer is kept away from the one end connection of first protection network and is provided with the link, be provided with the second protection network on the link, and connect on the link and be provided with the ventilation pipe. The utility model discloses in, through axial fan cooperation ventilation pipe and the connecting pipe in the dryer that sets up, can be stable carry out the defeated wind operation in the tunnel, through the controller cooperation air velocity transducer structure that sets up, can monitor the wind-force of working face position, through the structural fume extractor of removal frame that sets up, can carry out the work of discharging fume to the working face, whole structure can stabilize the ventilation work of intelligent tunnel excavation of carrying on, also can carry out nimble convenient operation of discharging fume.

Description

Ventilation and smoke exhaust system for long tunnel excavation

Technical Field

The utility model relates to a tunnel excavation technical field especially relates to a long tunnel excavation ventilation system of discharging fume.

Background

Ventilation and smoke exhaust of a tunnel are necessary protection facilities when the tunnel is excavated and propelled, and in order to ensure that the tunnel can be stably excavated and propelled, ventilation and smoke exhaust operations are required to be carried out in the tunnel so as to ensure that the working surface of the tunnel can stably and normally work and the tunnel has a safe working environment, so that a ventilation and smoke exhaust system for excavating the long tunnel has certain requirements;

current long tunnel excavation ventilation system of discharging fume, it lacks intelligent control device, the wind-force that axial fan carried impels more when remote at the tunnel excavation, wind-force diminishes often appears easily, lead to unsatisfied required wind-force of tunnel work, then need the manual work to make a round trip to run and adjust the axial fan operation, unusual trouble, its ventilation pipe structure is mostly plastics coating cloth as an organic whole simultaneously, often overhaul or when maintaining in the ventilation pipe, then unusual trouble, need whole dismantlement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcomings existing in the prior art and providing a long tunnel excavation ventilation and smoke exhaust system.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a ventilation and smoke exhaust system for excavation of a long tunnel comprises a fixed frame and a movable frame, wherein the top of the fixed frame is fixedly connected with an air duct, a ventilation groove is formed in the air duct, an axial flow fan is fixedly connected in the ventilation groove through a fixed block, a first protective net is arranged at one end of the air duct, a connecting frame is connected to one end, away from the first protective net, of the air duct, a second protective net is arranged on the connecting frame, the ventilation pipe is connected to the connecting frame, a connecting pipe is connected to the ventilation pipe, an adjusting plate is arranged in the connecting pipe, connecting blocks are fixedly connected to the top and the bottom of the adjusting plate, connecting grooves which are in nested fit with the connecting blocks are formed in the top and the bottom of the inner wall of the connecting pipe, universal wheels are arranged at the bottom of the movable frame, a hydraulic cylinder is embedded into, and a smoke exhaust fan is arranged at the top of the lifting platform.

As a further description of the above technical solution:

the power supply equipment and the protection box are arranged on the fixing frame, and the controller is arranged in the protection box.

As a further description of the above technical solution:

and the top of the air duct is provided with an air speed sensor.

As a further description of the above technical solution:

the adjusting plate is provided with an adjuster which is close to the bottom end of the connecting block at the bottom position and penetrates through the outer surface position of the connecting pipe.

As a further description of the above technical solution:

the outer surface of the connecting pipe is fixedly connected with a first mounting frame.

As a further description of the above technical solution:

the one end of induced-draft fan is provided with the filter screen, and the output connection of induced-draft fan is provided with the movable pipe, the top fixedly connected with second mounting bracket of induced-draft fan.

The utility model discloses following beneficial effect has:

the ventilation and smoke discharge system for the excavation of the long tunnel can stably carry out air conveying operation in the tunnel by matching an axial flow fan in an arranged air duct with a ventilation pipe and a connecting pipe, the ventilation pipe is made of conventional plastic coating cloth, the connecting pipe is made of metal materials, the connecting pipe can play a role of transfer connection, can be stably connected and can also be conveniently detached to carry out maintenance work on the ventilation pipe at regular intervals, the control operation of wind power can be conveniently carried out by an adjusting structure in the connecting pipe, multi-point arrangement can be carried out in the tunnel, the maintenance work surface can be conveniently carried out, the wind power at the position of a work surface can be monitored by matching the arranged controller with a wind speed sensor structure, when the wind power size does not meet the normal working wind power in the tunnel, the wind speed adjusting work of the axial flow fan can be conveniently carried out by matching the controller, so as to ensure the wind power stability, the security of reinforcing tunnel excavation, through the structural fume extractor of the removal frame that sets up, can carry out the work of discharging fume to the working face, through the cooperation of removing frame and pneumatic cylinder, portable liftable, the operation is very nimble, can follow tunnel excavation work and impel in step, simultaneously through the second mounting bracket structure that sets up, also can be convenient for hoist the inner wall of tunnel with the fume extractor, the structure uses nimble many changes, whole structure can stabilize the ventilation work of intelligent tunnel excavation, also can carry out nimble convenient operation of discharging fume, structural connection is stable, convenient use, and easy operation, it controls at any time to need not the manpower, also conveniently overhaul and maintain simultaneously, fine structure convenience and flexibility in use have.

Drawings

Fig. 1 is a schematic structural view of a fixing frame of a long tunnel excavation ventilation and smoke exhaust system provided by the utility model;

fig. 2 is a schematic structural view of a moving frame of a ventilation and smoke exhaust system for excavating a long tunnel according to the present invention;

fig. 3 is the utility model provides a long tunnel excavation ventilation system of discharging fume's connecting pipe structure end face map.

Illustration of the drawings:

1. a fixed mount; 2. an air duct; 3. a ventilation slot; 4. an axial flow fan; 5. a fixed block; 6. a first protection net; 7. a connecting frame; 8. a second protective net; 9. a power supply device; 10. a protection box; 11. a controller; 12. a wind speed sensor; 13. a vent pipe; 14. a connecting pipe; 15. an adjusting plate; 16. connecting blocks; 17. connecting grooves; 18. a regulator; 19. a first mounting bracket; 20. a movable frame; 21. a universal wheel; 22. a hydraulic cylinder; 23. a lifting platform; 24. a smoke exhaust machine; 25. a filter screen; 26. a movable tube; 27. a second mounting bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a ventilation and smoke exhaust system for excavation of a long tunnel comprises a fixed frame 1 and a movable frame 20, wherein the top of the fixed frame 1 is fixedly connected with an air duct 2, a ventilation groove 3 is arranged in the air duct 2, an axial flow fan 4 is fixedly connected in the ventilation groove 3 through a fixed block 5, one end of the air duct 2 is provided with a first protective screen 6, one end of the air duct 2, which is far away from the first protective screen 6, is connected with a connecting frame 7, a second protective screen 8 is arranged on the connecting frame 7, a ventilation pipe 13 is connected on the connecting frame 7, a connecting pipe 14 is connected on the ventilation pipe 13, an adjusting plate 15 is arranged in the connecting pipe 14, the top and the bottom of the adjusting plate 15 are both fixedly connected with a connecting block 16, the top and the bottom of the inner wall of the connecting pipe 14 are provided with a connecting groove 17 which is in embedded fit with the connecting, the driving end of the hydraulic cylinder 22 is fixedly connected with a lifting platform 23, and the top of the lifting platform 23 is provided with a smoke exhaust machine 24.

The fixed frame 1 is provided with a power supply device 9 and a protection box 10, a controller 11 is arranged in the protection box 10, a power supply structure can provide power supply for the whole structure, the controller 11 can be conveniently matched with a wind speed sensor 12 to control the rotating speed of the axial flow fan 4 so as to ensure the stability of wind power transmitted into a tunnel, and the model of the controller 11 can be STM 32; the top of the air duct 2 is provided with the air speed sensor 12, the structure of the air speed sensor 12 can be placed in a working surface for monitoring work, the stability of air quantity is conveniently ensured, and therefore the safety of work in the structure can be ensured; the bottom end of a connecting block 16 close to the bottom of the adjusting plate 15 and the outer surface of the connecting pipe 14 are provided with an adjuster 18, the connecting pipe 14 is made of a metal structure, so that the wind power control and adjustment can be conveniently carried out while a fixed connecting effect is achieved, the connection is stable, the maintenance work of the ventilation pipe 13 is also convenient, the fixed-point arrangement can be realized, the use is flexible and convenient, the safety is high, and the maintenance is convenient; one side of the outer surface of the connecting pipe 14 is fixedly connected with a first mounting rack 19, and the connecting pipe 14 can be conveniently fixed on the inner wall of the tunnel through the arrangement of the first mounting rack 19; one end of induced-draft fan 24 is provided with filter screen 25, and the output connection of induced-draft fan 24 is provided with movable pipe 26, the top fixedly connected with second mounting bracket 27 of induced-draft fan 24, can conveniently discharge the work with the smoke and dust that the working face during operation produced through induced-draft fan 24 structure, guarantee that the working face can stably carry out work, can play the guard action to the structure through setting up of filter screen 25, can dock with the pipe or the groove of discharging fume through movable pipe 26, conveniently discharge the flue gas, also can conveniently hoist the structure to the tunnel inner wall through the second mounting bracket 27 that sets up, it is very nimble to use.

The working principle is as follows: when using long tunnel excavation ventilation system of discharging fume, place tunnel working face with air velocity transducer 12, start axial fan 4, axial fan 4 carries wind to the working face through ventilation pipe 13 and connecting pipe 14, monitor work through controller 11, when the not satisfied required wind speed of tunnel work of wind speed, then adjust the 4 rotational speeds of axial fan through controller 11, thereby increase wind power output, the discharge fume fan 24 on will moving the frame 20 removes the working face position, with the butt joint of activity pipe 26 and discharge fume pipe or discharge fume tank, start smoke ventilator 24, can discharge away the flue gas that the working face produced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a long tunnel excavation ventilation system of discharging fume, includes mount (1) and removal frame (20), its characterized in that: the top of the fixing frame (1) is fixedly connected with an air duct (2), a ventilation groove (3) is arranged in the air duct (2), an axial flow fan (4) is fixedly connected in the ventilation groove (3) through a fixing block (5), one end of the air duct (2) is provided with a first protective screen (6), one end, far away from the first protective screen (6), of the air duct (2) is connected with a connecting frame (7), a second protective screen (8) is arranged on the connecting frame (7), a ventilation pipe (13) is connected on the connecting frame (7), a connecting pipe (14) is connected on the ventilation pipe (13), an adjusting plate (15) is arranged in the connecting pipe (14), connecting blocks (16) are fixedly connected to the top and the bottom of the adjusting plate (15), connecting grooves (17) which are matched with the connecting blocks (16) in a nesting mode are arranged on the top and the bottom of the inner wall of the, the bottom of moving frame (20) is provided with universal wheel (21), and the top embedding of moving frame (20) is provided with pneumatic cylinder (22), the drive end fixedly connected with elevating platform (23) of pneumatic cylinder (22), the top of elevating platform (23) is provided with smoke ventilator (24).

2. The long tunnel excavation ventilation and smoke evacuation system of claim 1, characterized in that: the power supply device is characterized in that the fixing frame (1) is provided with a power supply device (9) and a protection box (10), and a controller (11) is arranged in the protection box (10).

3. The long tunnel excavation ventilation and smoke evacuation system of claim 1, characterized in that: and the top of the air duct (2) is provided with an air speed sensor (12).

4. The long tunnel excavation ventilation and smoke evacuation system of claim 1, characterized in that: the adjusting plate (15) is provided with an adjuster (18) at the bottom end of a connecting block (16) close to the bottom and penetrating through the outer surface of the connecting pipe (14).

5. The long tunnel excavation ventilation and smoke evacuation system of claim 1, characterized in that: one side of the outer surface of the connecting pipe (14) is fixedly connected with a first mounting frame (19).

6. The long tunnel excavation ventilation and smoke evacuation system of claim 1, characterized in that: one end of the smoke exhaust fan (24) is provided with a filter screen (25), the output end of the smoke exhaust fan (24) is connected with a movable pipe (26), and the top of the smoke exhaust fan (24) is fixedly connected with a second mounting rack (27).