Ventilation device in tunnel engineering and method of use

Abstract

The application belongs to the technical field of tunnel ventilation, and particularly relates to a ventilation device in tunnel engineering and a use method thereof. The ventilation device comprises a plurality of ventilation assemblies in communication, and the ventilation assembly comprises a middle pipe, a flexible telescopic pipe, an end pipe, a flange end plate, an air inlet fan, an air outlet fan, a branch pipe, a horn cover, a branch pipe opening degree valve and a main opening degree valve. Two end pipes are connected to the two ends of the middle pipe through the flexible telescopic pipe respectively, the outer end of each end pipe is provided with the flange end plate, the two end pipes are respectively provided with the air inlet fan and the air outlet fan, the branch pipe provided with the horn cover and the branch pipe opening degree valve is arranged on the side of each of the two end pipes, and the main opening degree valve is arranged on the middle pipe. In the application, the ventilation assemblies can be quickly assembled in communication, the opening state of the functional parts in each ventilation assembly is controlled, the selected section of fresh air introduction and the selected section of air exhaust can be selected according to the requirement, and the control of the air suction point and the air outlet point is realized.

Description

Technical Field

[0001] This invention belongs to the field of tunnel ventilation technology, specifically relating to a ventilation device and its usage method in tunnel engineering. Background Technology

[0002] Tunnels are engineering structures buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels. During tunnel construction, the main sources of harmful gases inside the tunnel include drilling dust, blasting fumes, vehicle exhaust and dust, sprayed concrete dust, water mist, methane, radon, and high ground temperatures. To ensure the health of construction workers and to guarantee smooth construction, ventilation methods are essential. Generally, tunnel ventilation methods include exhaust ventilation, supply ventilation, mixed supply and exhaust ventilation, and ventilation using auxiliary tunnels. In highway tunnel construction, auxiliary tunnel ventilation is less commonly used due to economic reasons. For long tunnels, mixed ventilation is often employed. However, traditional mixed ventilation methods simply combine exhaust (or extraction) and supply ventilation systems without proper integration, lacking effective steering equipment, and failing to ensure smooth airflow according to the tunnel's turning angles.

[0003] To this end, the patent specification with publication number CN112065494B discloses a ventilation device suitable for long tunnel construction, including a frame and a steering adjustment assembly. An electrical control box is fixed inside the frame, and a ventilator is fixed above the frame. The air inlet of the ventilator is connected in sequence to an air inlet deflector and an air duct. Several ventilation hoses are connected in sequence to the air outlet of the ventilator. Electric air valves are connected between the ventilation hoses. A condensate filter is installed on the electric air valve. The ventilation hoses pass through the steering adjustment assembly.

[0004] However, this type of tunnel ventilation device has shortcomings in use. First, it cannot select specific sections for fresh air intake and exhaust, meaning it cannot control the air intake and exhaust points. Second, it cannot be quickly assembled. Therefore, it needs to be optimized and improved. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems existing in the conventional technology and to provide a ventilation device and its usage method in tunnel engineering.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0007] This invention provides a ventilation device for tunnel engineering, comprising several interconnected ventilation components. Each ventilation component includes a central pipe, a flexible telescopic pipe, end pipes, flange end plates, an exhaust fan, a branch pipe, a horn cover, a branch pipe opening valve, and a main opening valve. The two ends of the central pipe are connected to two end pipes via flexible telescopic pipes. Each end pipe has a flange end plate at its outer end to facilitate the assembly of the ventilation components. An exhaust fan is installed near the flange end plate on one end pipe, and an exhaust fan is installed near the flange end plate on the other end pipe. Branch pipes are installed on the sides of each of the two end pipes. A horn cover is installed at the outer end of each branch pipe, and a branch pipe opening valve is installed on each branch pipe. A main opening valve is installed on the central pipe.

[0008] Furthermore, in the ventilation device of the aforementioned tunnel project, both the intermediate pipe and the end pipe are straight pipes made of thin-walled stainless steel or aluminum alloy.

[0009] Furthermore, in the ventilation device of the aforementioned tunnel project, the flexible telescopic pipe is a corrugated plastic pipe, which is capable of stretching and twisting.

[0010] Furthermore, in the ventilation device of the aforementioned tunnel project, the flexible telescopic pipe is integrated with the intermediate pipe and the end pipe by a heat fusion method.

[0011] Furthermore, in the ventilation device of the aforementioned tunnel project, the inner cavity of the horn cover is connected to the inner cavity of the end pipe via a branch pipe, and a filter screen is installed at the opening of the horn cover.

[0012] Furthermore, in the ventilation device of the aforementioned tunnel project, the branch pipe opening valve and the main opening valve are both manual and electric dual-drive control valves.

[0013] Furthermore, the ventilation device in the aforementioned tunnel project also includes a controller, which is connected to the induced draft fan, exhaust fan, branch pipe opening valve, and main opening valve of each ventilation component.

[0014] Furthermore, the method of using the ventilation device in the aforementioned tunnel project includes the following steps:

[0015] 1) Divide the tunnel section into multiple dry sections according to the number of ventilation pipes. In the two outermost ventilation components, the outer port of one ventilation component is used as the fresh air inlet, and the outer port of the other ventilation component is used as the exhaust outlet.

[0016] 2) When it is necessary to introduce fresh air into the first selected section, open the two branch pipe opening valves in the ventilation component corresponding to the first selected section and close the main opening valve; open the main opening valve in the ventilation component between the first selected section and the fresh air inlet and close all the branch pipe opening valves; turn on all the exhaust fans and ventilators in the ventilation component between the first selected section and the fresh air inlet, and turn on the exhaust fan in the ventilation component corresponding to the first selected section.

[0017] 3) When it is necessary to exhaust air into the second selected section located between the first selected section and the exhaust vent, open the two branch pipe opening valves in the ventilation component corresponding to the second selected section and close the main opening valve; open the main opening valve in the ventilation component between the second selected section and the exhaust vent and close all the branch pipe opening valves; turn on all the exhaust fans and exhaust fans in the ventilation component between the second selected section and the exhaust vent, and turn on the exhaust fan in the ventilation component corresponding to the second selected section.

[0018] The beneficial effects of this invention are:

[0019] The ventilation device of the present invention includes several interconnected ventilation components, which can be quickly assembled and connected. The ventilation components are mainly composed of an intermediate pipe, a flexible telescopic pipe, an end pipe, a flange end plate, an exhaust fan, an exhaust fan, a branch pipe, a horn cover, a branch pipe opening valve, and a main opening valve. By controlling the opening state of the functional components in each ventilation component, the fresh air can be introduced and the exhaust can be carried out in selected sections according to the needs, that is, the control of the air intake point and the air outlet point can be realized.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the ventilation component in this invention;

[0023] Figure 2 This is a top view of the ventilation component in this invention.

[0024] Figure 3 This is a schematic diagram of the structure of the intermediate tube of the present invention;

[0025] Figure 4 This is a schematic diagram of the flexible telescopic tube in this invention;

[0026] Figure 5 This is a schematic diagram of the structure of the exhaust fan in this invention;

[0027] Figure 6 This is a schematic diagram of the exhaust fan structure in this invention;

[0028] Figure 7 This is a schematic diagram showing the positions of the branch pipe, the horn cover, and the branch pipe opening valve in this invention.

[0029] Figure 8 This is a schematic diagram showing the straight-line orientation of the ventilation device of the present invention;

[0030] Figure 9 This is a schematic diagram showing the non-linear orientation of the ventilation device of the present invention;

[0031] In the attached diagram, the component numbers are as follows:

[0032] 1-Intermediate pipe, 2-Flexible telescopic pipe, 3-End pipe, 4-Flange end plate, 5-Exhaust fan, 6-Exhaust fan, 7-Branch pipe, 8-Horn cover, 9-Branch pipe opening valve, 10-Main opening valve. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-9 As shown, this embodiment provides a ventilation device for tunnel engineering, including several interconnected ventilation components. The overall orientation of the ventilation components is set according to the orientation of the tunnel, such as... Figure 8 The straight line shown can also be set as follows: Figure 9 The direction of the straight line shown.

[0035] In this embodiment, the ventilation assembly includes a central pipe 1, a flexible telescopic pipe 2, end pipes 3, flange end plates 4, an exhaust fan 5, an exhaust fan 6, branch pipes 7, a horn cover 8, a branch pipe opening valve 9, and a main opening valve 10. Two end pipes 3 are connected to both ends of the central pipe 1 via the flexible telescopic pipes 2. Each end pipe 3 has a flange end plate 4 at its outer end to facilitate the assembly of the ventilation assembly. An exhaust fan 5 is installed near the flange end plate 4 on one end pipe 3, and an exhaust fan 6 is installed near the flange end plate 4 on the other end pipe 3. Branch pipes 7 are installed on the sides of each of the two end pipes 3. A horn cover 8 is installed at the outer end of each branch pipe 7, and a branch pipe opening valve 9 is installed on each branch pipe 7. The main opening valve 10 is installed on the central pipe 1.

[0036] In this embodiment, both the intermediate pipe 1 and the end pipe 3 are straight pipes made of thin-walled stainless steel or aluminum alloy. The flexible telescopic pipe 2 is a corrugated plastic pipe, capable of stretching and twisting. The flexible telescopic pipe 2 is connected to the intermediate pipe 1 and the end pipe 3 by a heat fusion method.

[0037] In this embodiment, the intermediate pipe 1 and the end pipe 3 are supported by ground supports, side wall supports, or top wall supports, or a combination thereof.

[0038] In this embodiment, the inner cavity of the horn cover 8 is connected to the inner cavity of the end pipe 3 via the branch pipe 7, and a filter screen is installed at the opening of the horn cover 8.

[0039] In this embodiment, the branch pipe opening valve 9 and the main opening valve 10 are manual and electric dual-drive control valves.

[0040] In this embodiment, a controller is also included, which is connected to the exhaust fan, branch pipe opening valve 9 and main opening valve 10 in each ventilation component.

[0041] This embodiment also provides a method for using a ventilation device, including the following steps:

[0042] 1) Divide the tunnel section into multiple dry sections according to the number of ventilation pipes. In the two outermost ventilation components, the outer port of one ventilation component is used as the fresh air inlet, and the outer port of the other ventilation component is used as the exhaust outlet.

[0043] 2) When it is necessary to introduce fresh air into the first selected section, open the two branch pipe opening valves 9 in the ventilation component corresponding to the first selected section and close the main opening valve 10; open the main opening valve 10 in the ventilation component between the first selected section and the fresh air inlet and close all the branch pipe opening valves 9; turn on all the exhaust fans 5 and exhaust fans 6 in the ventilation component between the first selected section and the fresh air inlet, and turn on the exhaust fan 5 in the ventilation component corresponding to the first selected section.

[0044] 3) When it is necessary to exhaust air into the second selected section located between the first selected section and the exhaust vent, open the two branch pipe opening valves 9 in the ventilation assembly corresponding to the second selected section and close the main opening valve 10; open the main opening valve 10 in the ventilation assembly between the second selected section and the exhaust vent and close all the branch pipe opening valves 9; turn on all the exhaust fans 5 and exhaust fans 6 in the ventilation assembly between the second selected section and the exhaust vent, and turn on the exhaust fan 6 in the ventilation assembly corresponding to the second selected section.

[0045] The ventilation device in this embodiment includes several interconnected ventilation components, which can be quickly assembled and connected. The ventilation components are mainly composed of an intermediate pipe 1, a flexible telescopic pipe 2, an end pipe 3, a flange end plate 4, an exhaust fan 5, an exhaust fan 6, a branch pipe 7, a horn cover 8, a branch pipe opening valve 9, and a main opening valve 10. By controlling the opening state of the functional components in each ventilation component, the fresh air can be introduced and the exhaust air can be ventilated in selected sections as needed, that is, the control of the air intake point and the air outlet point can be achieved.

[0046] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A ventilation device for tunnel engineering, comprising a plurality of interconnected ventilation components, characterized in that: The ventilation assembly includes a central pipe, a flexible telescopic pipe, end pipes, flange end plates, an exhaust fan, an exhaust fan, branch pipes, a horn cover, a branch pipe opening valve, and a main opening valve. The two ends of the central pipe are connected to two end pipes via flexible telescopic pipes. Each end pipe has a flange end plate at its outer end to facilitate the assembly of the ventilation assembly. One end pipe has an exhaust fan installed near the flange end plate, and the other end pipe has an exhaust fan installed near the flange end plate. Branch pipes are installed on the sides of each of the two end pipes. A horn cover is installed at the outer end of each branch pipe, and a branch pipe opening valve is installed on each branch pipe. A main opening valve is installed on the central pipe.

2. The ventilation device for tunnel engineering according to claim 1, characterized in that: Both the intermediate pipe and the end pipe are straight pipes made of thin-walled stainless steel or aluminum alloy.

3. The ventilation device in tunnel engineering according to claim 2, characterized in that: The flexible telescopic tube is a corrugated plastic tube, which can be stretched and twisted.

4. The ventilation device for tunnel engineering according to claim 3, characterized in that: The flexible telescopic tube is connected to the intermediate tube and the end tube by a heat fusion method.

5. The ventilation device for tunnel engineering according to claim 4, characterized in that: The inner cavity of the horn cover is connected to the inner cavity of the end pipe via a branch pipe, and a filter screen is installed at the opening of the horn cover.

6. The ventilation device for tunnel engineering according to claim 5, characterized in that: The branch pipe opening valve and the main opening valve are both manual and electric dual-drive control valves.

7. The ventilation device for tunnel engineering according to claim 6, characterized in that: It also includes a controller, which is connected to the exhaust fan, branch pipe opening valve and main opening valve of each ventilation component.

8. The ventilation device for tunnel engineering according to claim 7, characterized in that, Its usage includes the following steps: 1) Divide the tunnel section into multiple dry sections according to the number of ventilation components. In the two outermost ventilation components, the outer port of one ventilation component is used as a fresh air inlet, and the outer port of the other ventilation component is used as an exhaust outlet. 2) When it is necessary to introduce fresh air into the first selected section, open the two branch pipe opening valves in the ventilation component corresponding to the first selected section and close the main opening valve; open the main opening valve in the ventilation component between the first selected section and the fresh air inlet and close all the branch pipe opening valves; turn on all the exhaust fans and ventilators in the ventilation component between the first selected section and the fresh air inlet, and turn on the exhaust fan in the ventilation component corresponding to the first selected section. 3) When it is necessary to exhaust air into the second selected section located between the first selected section and the exhaust vent, open the two branch pipe opening valves in the ventilation component corresponding to the second selected section and close the main opening valve; open the main opening valve in the ventilation component between the second selected section and the exhaust vent and close all the branch pipe opening valves; turn on all the exhaust fans and exhaust fans in the ventilation component between the second selected section and the exhaust vent, and turn on the exhaust fan in the ventilation component corresponding to the second selected section.

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