Ventilation system for tunnel construction

Abstract

The utility model relates to a ventilation system, and provides a ventilation system for tunnel construction, which comprises a ventilation pipe, an air blower arranged at the end part of the ventilation pipe, a plurality of exhaust holes formed in the side wall of the ventilation pipe, an exhaust pipe fixedly arranged at the exhaust holes, a sleeve connected with the exhaust pipe and provided with a closed upper end, and a through hole formed in the upper end wall of the sleeve, the connecting rod is arranged at the upper end of the sleeve, and the baffle is connected with the connecting rod in a sliding mode. The multiple exhaust holes are distributed in the length direction of the ventilation pipe. According to the ventilation system for tunnel construction, ventilation can be evenly and fully carried out on all positions in a tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation systems, in particular to a ventilation system for tunnel construction. Background Art

[0002] For long tunnels, the air flow rate inside the tunnel is slow, and the air circulation is slow. In order to better control the fire when a fire occurs in the tunnel, special ventilation equipment needs to be added to the tunnel. The two ends of the trimmed tunnel are connected, so the one-way circulation of air can be maintained.

[0003] However, for tunnels under construction, usually only one side is open, and as the construction work progresses, ventilation inside the tunnel becomes increasingly important, which seriously affects the normal work of workers inside the tunnel and the normal use of various equipment. The common ventilation is to use a blower to blow air into the tunnel to squeeze out the exhaust gas in the tunnel, or to evacuate the tunnel so that fresh air from the outside is sucked in. However, for tunnels with deeper depths, it is necessary to use pipes for ventilation. The common practice is to set the air outlet of the pipe deep inside the tunnel, and then send fresh air in through the pipe. However, the disadvantage of this is that the pipe has only one air outlet, and the ventilation in the middle or other places of the tunnel is not timely, and the exhaust gas in various parts of the tunnel is forcibly squeezed out through the pipes deep in the tunnel. Therefore, the flow rate in various parts of the tunnel will be different, and it is easy to cause untimely and uneven ventilation. Utility Model Content

[0004] The utility model aims to provide a ventilation system for tunnel construction, which can evenly and fully ventilate various places inside the tunnel.

[0005] The embodiments of the utility model are realized through the following technical scheme: the ventilation system for tunnel construction of the utility model includes a ventilation pipe, a blower arranged at the end of the ventilation pipe, a plurality of exhaust holes opened on the side wall of the ventilation pipe, an exhaust pipe fixedly arranged at the exhaust hole, a sleeve connected to the exhaust pipe and closed at the upper end, a through hole opened on the upper end wall of the sleeve, a connecting rod arranged at the upper end of the sleeve, and a baffle slidably connected to the connecting rod; the plurality of exhaust holes are distributed along the length direction of the ventilation pipe.

[0006] Furthermore, the ventilation pipe and the exhaust pipe are both hoses.

[0007] Furthermore, the sleeve is detachably inserted into the exhaust pipe.

[0008] Furthermore, a throat clamp is provided on the outer wall of the exhaust pipe.

[0009] Furthermore, a spring is sleeved on the outer wall of the connecting rod, a thread is provided on the outer wall of the connecting rod, and a nut is threadedly connected to the thread; the baffle is arranged between the nut and the sleeve; and the spring is arranged between the baffle and the nut.

[0010] Furthermore, a connecting plate is provided at the upper end of the connecting rod, and a connecting hole is opened on the connecting plate.

[0011] Furthermore, the connecting rod is a telescopic rod.

[0012] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: the ventilation system for tunnel construction of the utility model, when in use, places the blower outside the tunnel and continuously blows air into the ventilation pipe, and the ventilation pipe is fixed to the top or side wall of the tunnel through a large number of connecting rods, and the fresh air in the ventilation pipe overflows through the exhaust hole, the exhaust pipe, the sleeve and the through hole. By pre-adjusting the spacing between the baffle and the sleeve, the flow rate of the airflow discharged from the exhaust pipe can be adjusted. The basic principle is that the closer to the inside of the tunnel, the faster the airflow rate, so that not only can fresh air be supplied to various places inside the tunnel, but also by reasonably adjusting the exhaust flow of each exhaust hole, the air in various places inside the tunnel can be discharged at a relatively stable rate, so that only one blower and a long ventilation pipe can be used to maintain efficient ventilation for a long tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of a ventilation system for tunnel construction provided by an embodiment of the utility model;

[0015] Figure 2 A schematic diagram of the internal structure of a ventilation system for tunnel construction provided by an embodiment of the utility model;

[0016] Figure 3 A schematic diagram of the structure of the ventilation pipe part provided by an embodiment of the utility model;

[0017] Figure 4 A schematic diagram of the structure of the baffle part provided in an embodiment of the utility model;

[0018] Figure 5 A schematic structural diagram of the sleeve portion provided in an embodiment of the utility model.

[0019] Icons: 1-ventilation pipe, 2-ventilation hole, 3-ventilation pipe, 4-sleeve, 5-through hole, 6-connecting rod, 7-baffle, 8-nut, 9-spring, 10-throat clamp, 11-connecting plate. DETAILED DESCRIPTION

[0020] Example

[0021] The following is further described in conjunction with specific embodiments. Figure 1 -Attached Figure 5 As shown, the ventilation system for tunnel construction of this embodiment includes a ventilation pipe 1, a blower disposed at the end of the ventilation pipe 1, a plurality of exhaust holes opened on the side wall of the ventilation pipe 1, an exhaust pipe 3 fixedly disposed at the exhaust hole, a sleeve 4 connected to the exhaust pipe 3 and closed at the upper end, a through hole 5 opened on the upper end wall of the sleeve 4, a connecting rod 6 disposed at the upper end of the sleeve 4, and a baffle 7 slidably connected to the connecting rod 6; the plurality of exhaust holes are distributed along the length direction of the ventilation pipe 1. Specifically, when in use, the blower is placed outside the tunnel and continuously blows air into the ventilation pipe 1, and the ventilation pipe 1 is fixed to the top or side wall of the tunnel through a large number of connecting rods 6. The fresh air in the ventilation pipe 1 overflows after passing through the exhaust hole, the exhaust pipe 3, the sleeve 4 and the through hole 5. By pre-adjusting the spacing between the baffle 7 and the sleeve 4, the flow rate of the airflow discharged from the exhaust pipe 3 can be adjusted. The basic principle is that the closer to the inside of the tunnel, the faster the airflow rate. This not only supplies fresh air to various places in the tunnel, but also through the reasonable adjustment of the exhaust flow rate of each exhaust hole, the air in various places in the tunnel can be discharged at a relatively stable rate, so that only one blower and a long ventilation pipe 1 can maintain efficient ventilation for a long tunnel.

[0022] The ventilation pipe 1 and the exhaust pipe 3 in this embodiment are both hoses. The sleeve 4 is detachably inserted into the exhaust pipe 3. A throat clamp 10 is sleeved on the outer wall of the exhaust pipe 3. Specifically, when not in use, the sleeve 4 can be directly taken out of the exhaust pipe 3, and then the ventilation pipe 1 and the exhaust pipe 3 can be rolled into a roll for more convenient storage, and as the tunnel construction progresses, the effective working length of the ventilation pipe 1 can be increased in time (the new sleeve 4 is inserted into the exhaust pipe 3, and then fixed with the throat clamp 10, and finally the connecting rod 6 is fixed to the inner wall of the tunnel), without the need to add a new ventilation pipe 1.

[0023] In this embodiment, the outer wall of the connecting rod 6 is sleeved with a spring 9, the outer wall of the connecting rod 6 is provided with a thread, and the thread is threadedly connected with a nut 8; the baffle 7 is arranged between the nut 8 and the sleeve 4; the spring 9 is arranged between the baffle 7 and the nut 8. Specifically, the gap between the baffle 7 and the sleeve 4 can be adjusted by adjusting the nut 8, thereby adjusting the flow rate of the airflow discharged from the sleeve 4. The spring 9 can buffer the movement of the baffle 7.

[0024] In this embodiment, a connecting plate 11 is disposed at the upper end of the connecting rod 6, and a connecting hole is formed in the connecting plate 11. Specifically, the connecting plate 11 can be provided to conveniently fix the connecting rod 6.

[0025] The connecting rod 6 in this embodiment is a telescopic rod. Specifically, the connecting rod 6 is telescopic and can conveniently adjust the installation height of the ventilation pipe 1 as needed.

[0026] In summary, the ventilation system for tunnel construction of this embodiment, when in use, places the blower outside the tunnel and continuously blows air into the ventilation pipe 1, and the ventilation pipe 1 is fixed to the top or side wall of the tunnel through a large number of connecting rods 6. The fresh air in the ventilation pipe 1 overflows through the exhaust hole, the exhaust pipe 3, the sleeve 4 and the through hole 5. By pre-adjusting the distance between the baffle 7 and the sleeve 4, the flow rate of the airflow discharged from the exhaust pipe 3 can be adjusted. The basic principle is that the closer to the inside of the tunnel, the faster the airflow rate, so that not only can fresh air be supplied to various places inside the tunnel, but also by reasonably adjusting the exhaust flow rate of each exhaust hole, the air in various places inside the tunnel can be discharged at a relatively stable rate, so that only one blower and a long ventilation pipe 1 can maintain efficient ventilation for a long tunnel.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ventilation system for tunnel construction, characterized in that: It comprises a ventilation pipe (1), a blower arranged at the end of the ventilation pipe (1), a plurality of exhaust holes opened on the side wall of the ventilation pipe (1), an exhaust pipe (3) fixedly arranged at the exhaust hole, a sleeve (4) connected to the exhaust pipe (3) and closed at the upper end, a through hole (5) opened on the upper end wall of the sleeve (4), a connecting rod (6) arranged at the upper end of the sleeve (4), and a baffle (7) slidably connected to the connecting rod (6); the plurality of exhaust holes are distributed along the length direction of the ventilation pipe (1).

2. The ventilation system for tunnel construction according to claim 1, characterized in that: The ventilation pipe (1) and the exhaust pipe (3) are both hoses.

3. The ventilation system for tunnel construction according to claim 2, characterized in that: The sleeve (4) is detachably inserted into the exhaust pipe (3).

4. The ventilation system for tunnel construction according to claim 3, characterized in that: The outer wall of the exhaust pipe (3) is sleeved with a throat clamp (10).

5. The ventilation system for tunnel construction according to claim 1, characterized in that: The outer wall of the connecting rod (6) is sleeved with a spring (9), the outer wall of the connecting rod (6) is provided with a thread, and the thread is threadedly connected with a nut (8); The baffle plate (7) is arranged between the nut (8) and the sleeve (4); the spring (9) is arranged between the baffle plate (7) and the nut (8).

6. The ventilation system for tunnel construction according to claim 1, characterized in that: A connecting plate (11) is provided at the upper end of the connecting rod (6), and a connecting hole is provided on the connecting plate (11).

7. The ventilation system for tunnel construction according to claim 1, characterized in that: The connecting rod (6) is a telescopic rod.

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