Ventilation system for disaster prevention and rescue emergency exit of railway tunnel

Abstract

The utility model relates to a railway tunnel disaster prevention and rescue emergency exit ventilation system, and relates to the technical field of tunnels. The tunnel ventilation system comprises at least two jet fans; the at least two jet fans are arranged in the evacuation channel, located between the protective door and the exit of the evacuation channel and used for enabling air in the evacuation channel to flow from the exit of the evacuation channel to the protective door; a partition wall is arranged between the evacuation channel and the main track tunnel, and the protective door is arranged on the partition wall. According to the ventilation system, the at least two jet fans are arranged between the protection door in the evacuation channel and the evacuation channel outlet, so that air flows from the evacuation channel outlet to the protection door, the structure of the ventilation system in the evacuation channel is simplified, the investment cost is reduced, the construction period is shortened, and manpower and material resources are reduced.

Description

Technical Field

[0001] The present application relates to the field of tunnel technology, and in particular to a railway tunnel disaster prevention and rescue emergency exit ventilation system. Background Art

[0002] With the development of my country's railway technology, more and more railway tunnels are being built. In order to implement the relevant laws and regulations on national production safety and railway transportation safety, and to ensure the safe evacuation and rescue of personnel after a fire or other accidents occurs in a passenger train in a tunnel, the "Design Code for Disaster Prevention, Evacuation and Rescue Engineering of Railway Tunnels" stipulates that for single-hole tunnels with a length of 10 km or more, at least one evacuation passage exit or shelter should be set up in the tunnel body; for single-hole tunnels with a length of more than 5 km and less than 10 km, it is advisable to combine the construction of auxiliary tunnels and set up one evacuation passage exit or shelter in the tunnel body section. When a fire occurs on a train, the train stops at the exit of the evacuation passage to evacuate passengers. After getting off the train, the passengers enter the emergency evacuation passage through the protective door at the exit of the evacuation passage, and then evacuate to the safe area outside the tunnel through the emergency evacuation passage. When the passengers pass through the exit of the evacuation passage, the protective door is opened. In order to prevent the smoke in the tunnel from entering the emergency evacuation passage and affecting the safe evacuation of passengers, it is necessary to ensure that the ventilation wind speed at the protective door meets the requirements. In order to meet the wind speed requirements, a mechanical ventilation system needs to be set up. Existing disaster prevention ventilation measures usually involve setting up a smoke-proof chamber at the junction of the evacuation passage exit and the mainline tunnel, and then setting up a mechanical ventilation system to supply air to the enclosed chamber through air supply ducts to prevent smoke in the mainline tunnel from entering the evacuation passage exit.

[0003] However, this ventilation system faces many problems. First, in order to prevent smoke from entering the evacuation channel outlet, it is necessary to set up a civil smoke-proof room and supporting related facilities. The maintenance and construction of these facilities are relatively complicated and consume manpower and material resources. Utility Model Content

[0004] An embodiment of the present disclosure provides a railway tunnel disaster prevention and rescue emergency exit ventilation system.

[0005] In a first aspect, an embodiment of the present disclosure provides a railway tunnel disaster prevention and rescue emergency exit ventilation system, comprising: at least two jet fans; at least two jet fans are arranged in the evacuation channel, between the protective door and the evacuation channel outlet, for making the air in the evacuation channel flow from the evacuation channel outlet to the protective door; a partition wall is arranged between the evacuation channel and the main line tunnel, and the protective door is arranged on the partition wall.

[0006] By applying the technical solution of the present invention, at least two jet fans are arranged between the protective door in the evacuation channel and the evacuation channel outlet, so that air flows from the evacuation channel outlet to the protective door, thereby simplifying the structure of the ventilation system in the evacuation channel, reducing investment costs and construction period, and reducing manpower and material resources.

[0007] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0009] Figure 1 It is a structural schematic diagram of an embodiment of the railway tunnel disaster prevention and rescue emergency exit ventilation system disclosed in the present invention;

[0010] Figure 2 It is a structural schematic diagram of another embodiment of the railway tunnel disaster prevention and rescue emergency exit ventilation system disclosed in the present invention;

[0011] Figure 3 It is a schematic cross-sectional view of the installation of two jet fans in the emergency exit ventilation system for disaster prevention and rescue of a railway tunnel disclosed in the present invention. DETAILED DESCRIPTION

[0012] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0013] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0014] In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments may be combined with each other.

[0015] In order to make the technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] See also Figure 1 , which shows a schematic structural diagram of an embodiment of a railway tunnel disaster prevention and rescue emergency exit ventilation system according to the present disclosure. Figure 1As shown, the tunnel ventilation system in this embodiment may include at least two jet fans 101. The at least two jet fans 101 are arranged in the evacuation passage 102, between the protective door 103 and the evacuation passage outlet 104. When the at least two jet fans 101 are in operation, the air in the evacuation passage 102 can flow from the evacuation passage outlet 104 to the protective door 103.

[0017] A partition wall 106 is provided between the evacuation passage 102 and the mainline tunnel 105, and a protective door 103 is provided on the partition wall 106. Passengers can open the protective door 103 through the emergency exit 107. In this way, when at least two jet fans 101 are working, the protective door can be ensured to be opened normally.

[0018] The above-mentioned railway tunnel disaster prevention and rescue emergency exit ventilation system disclosed in the present invention, by arranging at least two jet fans between the protective door in the evacuation passage and the evacuation passage exit, allows air to flow from the evacuation passage exit to the protective door, thereby simplifying the composition of the ventilation system in the evacuation passage, reducing investment costs and construction period, and reducing manpower and material resources.

[0019] Continue to see Figure 2 , which shows a schematic structural diagram of another embodiment of the railway tunnel disaster prevention and rescue emergency exit ventilation system according to the present disclosure. Figure 2 As shown, the railway tunnel disaster prevention and rescue emergency exit ventilation system in this embodiment may include two jet fans, 201 and 202. The jet fans 201 and 202 are placed up and down in the evacuation passage 203. In order to ensure the safety of the jet fans 201 and 202, in this embodiment, the jet fans 201 and 202 can be installed on the ground against the wall in the evacuation passage through the bracket 204. For details, see Figure 3 In this way, on the one hand, it can ensure that there is enough space in the evacuation channel, and on the other hand, it can ensure the safety of the jet fans 201 and 202. Since the jet fans are large in size and heavy in weight, the bracket 204 can be a concrete bracket.

[0020] The installation position of the jet fans 201 and 202 in the evacuation passage 203 is located at a distance of L from the protective door 205. Wherein, L≥N×D, N is a natural number, and D is the equivalent diameter of the evacuation passage 206. Generally speaking, the installation position of the jet fans 201 and 202 is generally not less than 10 times the equivalent diameter of the tunnel from the protective door 205, that is, N can be 10. In some specific practices, the value of L can be between 80m and 100m.

[0021] The protective door 205 is arranged on the partition wall 206. After the passengers pass through the emergency exit 207, they can open the protective door 205 to enter the evacuation passage 203. The protective door 205 can be opened toward the evacuation passage exit 208. In this way, when the passengers need to evacuate, they can directly open the protective door 205 to enter the evacuation passage 203. In addition, the wind speed generated by the jet fans 201 and 202 measured at the protective door 205 is not less than 1.5 m / s.

[0022] In addition, in order to ensure the safety of passengers during the evacuation process, a protective net 209 may be provided outside the jet fans 201 and 202 .

[0023] Compared with the existing tunnel ventilation system, the above-mentioned railway tunnel disaster prevention and rescue emergency exit ventilation system disclosed in the present invention does not require the installation of a civil smoke-proof chamber, thereby reducing investment costs and construction periods; reduces one protective door, thereby facilitating the rapid evacuation of passengers in an emergency; simplifies the ventilation system, thereby making it easier to install and operate and maintain the ventilation system; and eliminates the residual pressure valve, thereby completely eliminating hidden dangers that affect the safe operation of trains.

[0024] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A railway tunnel disaster prevention and rescue emergency exit ventilation system, characterized in that: include: At least two jet fans; The at least two jet fans are arranged in the evacuation passage, between the protective door and the evacuation passage outlet, and are used to make the air in the evacuation passage flow from the evacuation passage outlet to the protective door; A partition wall is provided between the evacuation passage and the mainline tunnel, and the protective door is provided on the partition wall; The at least two jet fans are installed on the ground against the wall through brackets; The at least two jet fans are placed up and down.

2. The railway tunnel disaster prevention and rescue emergency exit ventilation system according to claim 1, wherein: The support is a concrete support.

3. The railway tunnel disaster prevention and rescue emergency exit ventilation system according to claim 1, wherein: The installation position of the at least two jet fans is located at a distance of L from the protective door, wherein L≥N×D, N is a natural number, and D is the equivalent diameter of the evacuation passage.

4. The railway tunnel disaster prevention and rescue emergency exit ventilation system according to claim 3, wherein: L is between 80m and 100m.

5. The railway tunnel disaster prevention and rescue emergency exit ventilation system according to claim 1, wherein: The wind speed measured at the protective door and generated by the at least two jet fans is not less than 1.5 m / s.

6. The railway tunnel disaster prevention and rescue emergency exit ventilation system according to claim 1, wherein: A protective net is arranged outside the installation positions of the at least two jet fans.

7. The railway tunnel disaster prevention and rescue emergency exit ventilation system according to claim 1, wherein: The protective door opens toward the exit of the evacuation passage.

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