A tunnel ventilation device

Abstract

This utility model provides a tunnel ventilation device, including a fan and a mounting frame. The output end of the fan is connected to multiple ventilation pipes, each ventilation pipe having a ventilation hole and a slot. Both ends of each ventilation pipe have connectors for connecting to another ventilation pipe. There are several mounting frames. The ventilation pipes are mounted on the top of the tunnel inner wall through the mounting frames. The mounting frame includes a support plate, and both ends of the support plate are hinged to mounting plates. Each mounting plate has several through holes, and each support plate also has a limiting strip for engaging the slots. This solves the problem in the prior art that the ventilation pipes of the ventilation system cannot be quickly and conveniently connected and movement is restricted during installation.

Description

Technical Field

[0001] This utility model relates to the field of tunnel ventilation technology, and in particular to a tunnel ventilation device. Background Technology

[0002] The relatively enclosed space inside tunnels leads to a decrease in oxygen levels, a sharp increase in the concentration of harmful gases and dust, and a significant rise in temperature and humidity. Such an environment poses a serious threat to the health of workers and may even cause accidents such as suffocation and poisoning. Therefore, it is necessary to ventilate the interior of the tunnel by continuously supplying fresh air to dilute and expel harmful gases and dust, maintain oxygen levels within a safe range, and thus ensure the safety of workers and the smooth progress of construction.

[0003] Ventilation ducts are characterized by their large diameter and heavy weight. When installing ventilation ducts in a ventilation system inside a tunnel, mounting frames are needed to support them. Currently, most mounting frames are plate-like structures on which the ventilation ducts are placed or fixed with clamps, thus providing support. However, since ventilation ducts need to withstand high wind pressure and potential vibrations, it is necessary to limit their displacement and prevent connection failures between multiple duct sections. Therefore, a tunnel ventilation system that can fix ventilation ducts and is easy to install is needed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a tunnel ventilation device, which solves the problems of the ventilation pipes of the ventilation system not being able to be connected quickly and conveniently and restricting their movement.

[0005] According to an embodiment of this utility model, a tunnel ventilation device includes a fan and a mounting frame. The output end of the fan is connected to multiple ventilation pipes. Each ventilation pipe has a ventilation hole and a slot. Both ends of each ventilation pipe are provided with connectors to connect it to another ventilation pipe. There are several mounting frames. The ventilation pipes are mounted on the top of the tunnel inner wall through the mounting frames. The mounting frame includes a support plate. Both ends of the support plate are hingedly provided with mounting plates. Each mounting plate has several through holes. Each support plate is also provided with a limiting strip for engaging the slot.

[0006] Compared with the prior art, this utility model has the following advantages: By using a hinged mounting plate and a support plate, the mounting plate can easily fit into the inner wall of the tunnel. When connecting two ventilation pipes, the ends of the two ventilation pipes to be connected overlap the support plate. The ventilation pipes to be installed are moved so that the two ventilation pipes abut against each other, and then they are connected by a connector. At this time, the limiting strip has been inserted into the slot, thereby restricting the movement of the ventilation pipes while facilitating the installation of the two ventilation pipes, ensuring the stable operation of the entire ventilation system.

[0007] Furthermore, each ventilation duct has an annular groove at one end along its axial direction to form a protruding duct, and the other end of each ventilation duct is recessed inward to form a recessed groove that matches the protruding duct.

[0008] Furthermore, a sealing ring is provided at the bottom of each recessed groove.

[0009] Furthermore, each sealing ring has an annular protrusion on the side opposite to the mounting tube, and each protruding tube end has a sealing groove for the annular protrusion to engage.

[0010] Furthermore, the connector includes: a connecting plate, with connecting plates at both ends of the ventilation duct, and each connecting plate having several connecting platforms on the side opposite to the ventilation duct, and each connecting platform having a through connecting hole.

[0011] Furthermore, the card slot and the annular groove are integrally formed, and the length of the annular groove is equal to the sum of the length of the recessed groove and the width of the limiting strip.

[0012] Furthermore, it also includes a corrugated pipe, one end of which is connected to the ventilation duct furthest from the fan.

[0013] Furthermore, the inner wall of each ventilation duct is coated with epoxy resin or ceramic coating. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0015] Figure 2 This is a schematic diagram of the connector structure according to an embodiment of the present utility model.

[0016] Figure 3 This is a schematic diagram of the ventilation pipe connection according to an embodiment of the present utility model.

[0017] Figure 4 This is a cross-sectional view of the ventilation pipe connection point in an embodiment of this utility model.

[0018] In the above attached figures: 1. Fan; 2. Ventilation duct; 3. Connector; 4. Support plate; 5. Mounting plate; 6. Limiting strip; 7. Protruding pipe; 8. Sealing ring; 9. Annular protrusion; 301. Connecting plate; 302. Connecting platform; 10. Corrugated pipe. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 2 As shown in the figure, this utility model embodiment proposes a tunnel ventilation device, including a fan 1 and a mounting frame. The output end of the fan 1 is connected to multiple ventilation pipes 2. Each ventilation pipe 2 is provided with ventilation holes and slots. Each ventilation pipe 2 has connectors 3 at both ends to connect it to another ventilation pipe 2. There are several mounting frames. The ventilation pipes 2 are mounted on the top of the tunnel inner wall through the mounting frames. The mounting frame includes a support plate 4. Both ends of the support plate 4 are hingedly provided with mounting plates 5. Each mounting plate 5 is provided with several through holes. Each support plate 4 is also provided with a limiting strip 6 for engaging the slots. The ventilation duct 2 has a hollow structure. During installation, the fan 1 is installed outside the tunnel. Multiple ventilation ducts 2 are connected end to end to deliver air to the tunnel's extension. For areas requiring bends, elbows are installed for turning. To ensure sufficient air pressure, pressurization devices are added at intervals to increase air pressure. Conventional methods are not detailed here. When installing the ventilation duct 2 inside the tunnel, the mounting plate 5 is first fixed to the tunnel's inner wall with bolts. The mounting plate 5 can rotate to facilitate fitting with the tunnel's inner wall. After installing the support plate 4 with the mounting plate 5, the two ventilation ducts 2 are aligned. Then, the two ventilation ducts 2 are connected using the connector 3. At this time, the slot of one of the ventilation ducts 2 is engaged with the limiting strip 6 at the top of the support plate 4. The limiting strip 6 restricts the ventilation duct 2 from moving along its axial direction. The two ventilation ducts 2 are connected using the connector 3. The limiting strip 6 is engaged in the slot to restrict the displacement of the ventilation duct 2. This ensures convenient connection of the two ventilation ducts 2 while preventing the ventilation ducts 2 from moving easily, thus ensuring the stability of the entire ventilation system.

[0021] like Figure 3 and Figure 4 As shown, furthermore, one end of each ventilation pipe 2 has an annular groove along its axial direction to form a protruding pipe 7, and the other end of each ventilation pipe 2 is recessed inward to form a recessed groove that matches the protruding pipe 7. When connecting two ventilation pipes 2, the protruding pipe 7 of one ventilation pipe 2 is inserted into the recessed groove of the other ventilation pipe 2. Through the convex-concave fit, the connection stability between the two ventilation pipes 2 is improved.

[0022] like Figure 4As shown, each recessed groove is further provided with a sealing ring 8 at its bottom. When the protruding tube 7 of one ventilation pipe 2 extends into the recessed groove of another ventilation pipe 2, the end of the protruding tube 7 abuts against the sealing ring 8, thereby improving the sealing performance of the connection between the two ventilation pipes 2.

[0023] like Figure 4 As shown, furthermore, each sealing ring 8 has an annular protrusion 9 on the side facing away from the mounting tube, and each protruding tube 7 has a sealing groove at its end for the annular protrusion 9 to engage. The annular protrusion 9 and the sealing ring 8 have a T-shaped cross-section and are integrally molded. When the protruding tube 7 is inserted into the recessed groove of another ventilation tube 2 and abuts against the sealing ring 8, the annular protrusion 9 on the sealing ring 8 will insert into the sealing groove, extending the distance that the air needs to travel through the gap at the connection of the two ventilation tubes 2, further improving the sealing performance between the two ventilation tubes 2. Preferably, to facilitate the embedding of the annular protrusion 9 into the sealing groove, the side of the annular protrusion 9 facing away from the sealing ring 8 has a guide slope.

[0024] like Figure 2 As shown, the connector 3 further includes a connecting plate 301. Connecting plates 301 are provided at both ends of the ventilation pipe 2. Each connecting plate 301 has several connecting platforms 302 on the side facing away from the ventilation pipe 2, and each connecting platform 302 has a through-hole. In this embodiment, the connecting plate 301 is a rectangular plate. When the two ventilation pipes 2 are connected in place, the connecting platforms 302 on the two connecting plates 301 abut against each other. At this time, bolts and nuts are passed through the connecting holes to lock the two plates together, completing the docking installation of the two ventilation pipes 2.

[0025] Furthermore, the slot and the annular groove are integrally formed, and the length of the annular groove is equal to the sum of the length of the recessed groove and the width of the limiting strip 6. After the protruding tube 7 is inserted into the recessed groove, a part of the protruding tube 7 is not inserted into the recessed groove, thus forming a slot for the limiting strip 6 to be inserted. After the two ventilation tubes 2 are connected, the setting of the slot position on the ventilation tube 2 facilitates the manufacturing and processing of the ventilation tube 2.

[0026] like Figure 1 As shown, it further includes a corrugated pipe 10, one end of which is connected to the ventilation duct 2 furthest from the fan 1. The connection method between the corrugated pipe 10 and the ventilation duct 2 can be selected from the existing technology. Workers can easily move the air outlet of the corrugated pipe 10 to the required position by taking advantage of the omnidirectional rotation characteristic of the corrugated pipe 10, which facilitates the work needs of the workers.

[0027] Furthermore, the inner wall of each ventilation duct 2 is coated with epoxy resin or a ceramic coating. Similarly, epoxy resin can be replaced with a ceramic coating, the purpose of which is to improve the smoothness of the inner wall of the ventilation duct 2, reduce the coefficient of friction, and thus reduce wind resistance.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tunnel ventilation device, characterized in that, include: A fan (1) is connected to a multi-segment ventilation pipe (2) at the output end of the fan (1). Each ventilation pipe (2) has a ventilation hole and a slot. Both ends of each ventilation pipe (2) are provided with a connector (3) to connect it to another ventilation pipe (2). Mounting frame, there are several mounting frames, and the ventilation pipe (2) is mounted on the top of the tunnel inner wall through the mounting frame; The mounting bracket includes a support plate (4), with mounting plates (5) hinged at both ends of the support plate (4). Each mounting plate (5) has several through holes, and each support plate (4) also has a limiting strip (6) for engaging with a slot.

2. A tunnel ventilation device as described in claim 1, characterized in that: One end of each ventilation pipe (2) is provided with an annular groove along its axial direction to form a protruding pipe (7), and the other end of each ventilation pipe (2) is recessed inward to form a recessed groove that matches the protruding pipe (7).

3. A tunnel ventilation device as described in claim 2, characterized in that: Each recessed groove is provided with a sealing ring (8) at the bottom.

4. A tunnel ventilation device as described in claim 3, characterized in that: Each sealing ring (8) has an annular protrusion (9) on the side opposite to the mounting tube, and each protruding tube (7) has a sealing groove at its end for the annular protrusion (9) to be inserted.

5. A tunnel ventilation device as described in claim 1, characterized in that, The connector (3) includes: a connecting plate (301), both ends of the ventilation pipe (2) are provided with connecting plates (301), each connecting plate (301) is provided with several connecting platforms (302) on the side away from the ventilation pipe (2), and each connecting platform (302) is provided with a through connecting hole.

6. A tunnel ventilation device as described in claim 2, characterized in that: The card slot and the annular groove are integrally formed, and the length of the annular groove is equal to the sum of the length of the recessed groove and the width of the limiting strip (6).

7. A tunnel ventilation device as described in claim 1, characterized in that: It also includes a corrugated pipe (10), one end of which is connected to the ventilation pipe (2) furthest from the fan (1).

8. A tunnel ventilation device as described in claim 1, characterized in that: The inner wall of each ventilation duct (2) is coated with epoxy resin or ceramic coating.

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