Small-size tunnel fire ventilation and smoke exhaust experimental device

Abstract

The utility model discloses a tunnel fire ventilation and smoke exhaust small-size experimental device, which comprises a fan access unit and other tunnel units, and is characterized in that the fan access unit comprises a first main body, first connecting pieces arranged at two ends of the first main body and a fan access device arranged at the top of the first main body; and the first main body is provided with a first air duct communicated with the other tunnel units. According to the tunnel fire ventilation and smoke exhaust small-size experiment device provided by the invention, the tunnel small-size experiment cost is controlled, the time and manpower required by tunnel assembly and fan adjustment during switching of the ventilation and smoke exhaust modes can be reduced, and the experiment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of tunnel fire ventilation and smoke exhaust small size experimental device. BACKGROUND

[0002] Tunnel fire has been a major safety problem in tunnel engineering. Once a fire occurs in a tunnel, due to the closed nature of the tunnel and the diffusion of smoke, it often leads to serious casualties and property losses. Therefore, studying the ventilation and smoke exhaust technology of tunnel fire is of great significance to improve the safety and fire emergency capability of the tunnel. Considering the high cost, long test period and low repeatability of full-size test, small-size model test is often used in reality. In the research process, the ventilation and smoke exhaust mode of the tunnel is the key to the study. The current mainstream smoke exhaust modes are top concentrated smoke exhaust and longitudinal ventilation smoke exhaust. The main difference between the two smoke exhaust modes is whether an independent smoke exhaust duct needs to be set at the top of the tunnel for smoke exhaust.

[0003] The traditional small-size tunnel model test of the tunnel has three main processing methods for the above two different smoke exhaust modes: (1) the applicability of the two smoke exhaust modes is roughly determined by numerical simulation, and then the smoke exhaust mode with higher applicability is selected for small-size model test according to the result analysis. The main disadvantage of this method is that the credibility of numerical simulation cannot be guaranteed. (2) two sets of small-size models are prefabricated for test according to different smoke exhaust schemes. The main disadvantage of this method is that the fund consumption is often large. (3) an independent smoke exhaust duct partition is prefabricated, and the partition is reassembled and spliced according to different smoke exhaust schemes. This method can better control the cost, but a large amount of time and manpower is consumed in the process of reassembly and splicing. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of tunnel fire ventilation and smoke exhaust small size experimental device, to solve the above technical problems.

[0005] To achieve the above purpose, the utility model provides a kind of tunnel fire ventilation and smoke exhaust small size experimental device, which comprises a fan access unit and other tunnel units. The fan access unit comprises a first main body, first connecting pieces arranged at both ends of the first main body, and a fan access device mounted on the top of the first main body. The first main body has a first air duct connected to the other tunnel units.

[0006] In an embodiment, the first connecting piece has a first air port connected to the first air duct, and a first sealing plate is detachably mounted at the first air port.

[0007] In an embodiment, the first main body has a first driving lane located below the first air duct, and a smoke exhaust duct plate is arranged between the first air duct and the first driving lane.

[0008] In an embodiment, the smoke exhaust panel is provided with a second air outlet, and a second sealing plate is detachably installed at the second air outlet.

[0009] In an embodiment, a guide plate is provided at the second air outlet and is inclined towards the first lane.

[0010] In an embodiment, the other tunnel unit comprises a second main body and a second connecting piece provided at an end of the second main body, and the second connecting piece is connectable with the first connecting piece, so that a second air duct inside the second main body is in communication with the first air duct.

[0011] In an embodiment, the first connecting piece and the second connecting piece are connected by fasteners.

[0012] In an embodiment, at least one side wall of the second main body is made of fireproof glass.

[0013] In the technical scheme of the utility model, the tunnel fire ventilation and smoke exhaust small-size experimental device comprises a fan access unit and other tunnel units, the fan access unit comprises a first main body, first connecting pieces provided at two ends of the first main body, and a fan access device installed on the top of the first main body, and the first main body has a first air duct in communication with the other tunnel units.

[0014] When the longitudinal ventilation and smoke exhaust scheme needs to be tested, the fan on the fan access device is adjusted to be pressed in, the first sealing plate on the first connecting piece on both sides is inserted, the second sealing plate on the smoke exhaust panel is taken out, and then the longitudinal ventilation and smoke exhaust experiment can be performed; when the top centralized smoke exhaust scheme needs to be tested, the fan on the fan access device is adjusted to be pulled out, the first sealing plate on the first connecting piece on both sides is taken out, and the second sealing plate on the smoke exhaust panel is inserted, so that the top centralized smoke exhaust experiment can be realized, the cost of the tunnel small-size test site is controlled, the time and manpower required for tunnel assembly and fan adjustment when switching the ventilation and smoke exhaust mode are reduced, and the test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor.

[0016] Figure 1 It is a structural schematic view of the tunnel fire ventilation and smoke exhaust small-size experimental device in the embodiments of the utility model.

[0017] Figure 2 Structure diagram of a fan access unit in the embodiment of the present application;

[0018] Figure 3 Structure diagram of other tunnel units in the embodiment of the present application;

[0019] Figure 4 Structure diagram of a first lane in the embodiment of the present application;

[0020] Figure 5 Structure diagram of a first lane and a smoke exhaust channel plate in the embodiment of the present application.

[0021] Figure 6 Structure diagram of a first connecting piece in the embodiment of the present application.

[0022] Brief Description of Drawings: 10, fan access unit; 11, first main body; 12, first connecting piece; 121, first air port; 13, fan access device; 14, first air duct; 15, first sealing plate; 16, first lane; 17, smoke exhaust channel plate; 18, second sealing plate; 19, flow guide plate; 20, other tunnel units; 21, second main body; 22, second connecting piece; 23, second air duct.

[0023] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work under the premise that the specific working conditions are changed, belong to the scope of protection of the present application.

[0025] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture is changed, the directional indications will also be changed accordingly.

[0026] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the technical features indicated. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] Furthermore, the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the scope of protection required by the present application.

[0028] The present application provides a kind of tunnel fire ventilation and smoke exhaust small size experimental device.

[0029] As shown in Figures 1-6 The present application provides a kind of tunnel fire ventilation and smoke exhaust small size experimental device, which comprises fan access unit 10 and other tunnel unit 20, the fan access unit 10 includes first body 11, first connecting piece 12 arranged at both ends of the first body 11 and fan access device 13 installed on the top of the first body 11, the first body 11 has the first air duct 14 connected with the other tunnel unit 20.

[0030] In the present application, the first air duct 14 has detachable installation of the first sealing plate 15 and the second sealing plate 18 in the longitudinal direction (perpendicular to the extension direction of the first body 11) and the height direction, so when testing the longitudinal ventilation and smoke exhaust scheme, the fan on the fan access device 13 is adjusted to be pressed into the first sealing plate 15 on the first connecting piece 12 on both sides, and the second sealing plate 18 on the smoke exhaust duct plate 17 is removed, then the longitudinal ventilation and smoke exhaust experiment can be carried out; when testing the top concentrated smoke exhaust scheme, the fan on the fan access device 13 is adjusted to be pulled out, the first sealing plate 15 on the first connecting piece 12 on both sides is removed, and the second sealing plate 18 on the smoke exhaust duct plate 17 is inserted, which can realize the experiment of top concentrated smoke exhaust. The present application controls the cost of tunnel small size test ground, reduces the time and manpower required for tunnel assembly and fan adjustment when switching ventilation and smoke exhaust mode, and improves the test efficiency.

[0031] Specifically, the first connecting piece 12 has the first air port 121 connected with the first air duct 14, the first sealing plate 15 is detachably installed at the first air port 121, high-temperature-resistant lubricating grease is arranged around the first sealing plate 15 to ensure the sealing effect of the first sealing plate 15, when the first sealing plate 15 is removed, the sealing effect of different smoke exhaust modes can be ensured by sealing the insertion gap with fireproof adhesive tape.

[0032] Meanwhile, the first main body 11 has a first lane 16 below the first air duct 14, and a smoke exhaust duct plate 17 is arranged between the first air duct 14 and the first lane 16, and a second air outlet is arranged on the smoke exhaust duct plate 17, and a second sealing plate 18 is detachably arranged at the second air outlet. The insertion slot of the first sealing plate 15 and the second sealing plate 18 can be sealed by lubricating grease, and different smoke exhaust modes can be realized by adjusting the disassembly of the first sealing plate 15 and the second sealing plate 18. After the first sealing plate 15 or the second sealing plate 18 is disassembled, the gap can be sealed by fireproof adhesive tape.

[0033] The second air outlet is provided with a guide plate 19 inclined towards the first lane 16, and the guide plate 19 is not less than the opening of the smoke exhaust duct plate 17 along the radial dimension of the tunnel, which can effectively improve the flow guiding effect of the flue gas.

[0034] Please refer to Figure 3 The other tunnel unit 20 comprises a second main body 21 and a second connecting piece 22 arranged at the end of the second main body 21, and the second connecting piece 22 can be connected with the first connecting piece 12, so that the second air duct 23 inside the second main body 21 is connected with the first air duct 14. In this embodiment, the number of other tunnel units 20 can be multiple, and multiple other tunnel units 20 are spliced with each other to realize the installation of the experimental device.

[0035] Among them, the first connecting piece 12 and the second connecting piece 22 are connected through fasteners, the first connecting piece 12 and the second connecting piece 22 are connected with each other through bolts, and high-temperature-resistant fireproof glue is arranged on the first connecting piece 12 and the second connecting piece 22, and the air tightness of the whole model tunnel is ensured by the pressure provided by the bolts.

[0036] At least one side wall of the second main body 21 is made of fireproof glass, and the remaining part is made of steel structure material, which is convenient for observing the test phenomenon during the ventilation and smoke exhaust test.

[0037] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A small-scale experimental device for tunnel fire ventilation and smoke extraction, characterized in that, The tunnel fire ventilation and smoke exhaust small-size experimental device comprises a fan access unit (10) and other tunnel units (20), the fan access unit (10) comprises a first main body (11), first connecting pieces (12) arranged at both ends of the first main body (11) and a fan access device (13) installed on the top of the first main body (11), and the first main body (11) is provided with a first air duct (14) which is communicated with the other tunnel units (20).

2. The small-scale experimental apparatus for tunnel fire ventilation and smoke extraction according to claim 1, characterized in that, The first connecting piece (12) is provided with a first air port (121) which is communicated with the first air duct (14), and a first sealing plate (15) is detachably arranged at the first air port (121).

3. The small-scale experimental apparatus for tunnel fire ventilation and smoke extraction according to claim 2, characterized in that, The first main body (11) is provided with a first lane (16) which is located below the first air duct (14), and a smoke exhaust duct plate (17) is arranged between the first air duct (14) and the first lane (16).

4. The small-scale experimental apparatus for tunnel fire ventilation and smoke extraction according to claim 3, characterized in that, The smoke exhaust duct plate (17) is provided with a second air port, and a second sealing plate (18) is detachably arranged at the second air port.

5. The small-scale experimental apparatus for tunnel fire ventilation and smoke extraction according to claim 4, wherein, A guide plate (19) is arranged on the second air port and is inclined towards the first lane (16).

6. The small-scale experimental apparatus for tunnel fire ventilation and smoke extraction according to claim 1, wherein, The other tunnel units (20) comprise a second main body (21) and a second connecting piece (22) arranged at the end of the second main body (21), and the second connecting piece (22) is connected with the first connecting piece (12), so that a second air duct (23) located in the second main body (21) is communicated with the first air duct (14).

7. The small-scale experimental apparatus for tunnel fire ventilation and smoke extraction according to claim 6, characterized in that, The first connecting piece (12) and the second connecting piece (22) are connected through fasteners.

8. The small-scale experimental apparatus for tunnel fire ventilation and smoke extraction according to claim 6, wherein, At least one side wall of the second main body (21) is made of fireproof glass.

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