Smoke exhaust system for highway tunnel
By setting up cross passages and isolation doors for smoke exhaust in highway tunnels, and combining vertical and inclined shaft designs, a shared smoke exhaust passage was achieved between the left and right tunnels. This solved the problems of complex construction and high cost of traditional tunnel smoke exhaust systems, and improved construction efficiency and reduced costs.
Patent Information
- Application Number
- CN202423274546.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional highway tunnel smoke exhaust systems suffer from problems such as complex construction, high difficulty, and high cost due to the separate smoke exhaust ducts in the left and right tunnels.
A horizontal smoke exhaust channel connects the left and right tunnels, and the smoke flow direction is controlled by an isolation door. They share the same set of smoke exhaust channels. The design of vertical and inclined smoke exhaust shafts simplifies the construction process.
It reduced construction difficulty and costs, improved smoke extraction efficiency, and simplified construction processes.
Smart Images
Figure CN223825037U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of tunnel smoke exhaust, and specifically is a highway tunnel smoke exhaust system. BACKGROUND
[0002] With the construction of highway tunnels, 5-6km tunnels are generally increased in China, and according to article 10.2.7 of the Design Details of Highway Tunnel Ventilation, a one-way traffic tunnel using longitudinal smoke exhaust, the design of fire smoke exhaust should follow the following principles: "2 The maximum travel distance of fire smoke in the tunnel should not be greater than 5000m."
[0003] At present, the traditional highway tunnel smoke exhaust system usually exhausts smoke independently in left and right holes, for example Figure 1 The highway tunnel smoke exhaust system shown in the figure comprises a smoke exhaust inclined shaft 7, a left connecting channel 10 and a right connecting channel 11, the left connecting channel 10 connects the smoke exhaust inclined shaft 7 and the left hole 1, the right connecting channel 11 connects the smoke exhaust inclined shaft 7 and the right hole 2, and the right connecting channel 11 has a turn to avoid the left hole 1. In this way, the left hole 1 exhausts smoke to the smoke exhaust inclined shaft 7 by using the left connecting channel 10 alone, and the right hole 2 exhausts smoke to the smoke exhaust inclined shaft 7 by using the right connecting channel 11 alone, and the left and right holes exhaust smoke independently. However, the independent exhaust ducts increase the connecting channels connecting the main hole and the smoke exhaust inclined shaft 7, and inevitably cause the connecting channel to turn, which leads to complex construction technology, high construction difficulty and high overall cost. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a highway tunnel smoke exhaust system to reduce the cost of smoke exhaust.
[0005] The utility model adopts the technical scheme of: a highway tunnel smoke exhaust system, comprising a smoke exhaust horizontal channel and a smoke exhaust shaft; the smoke exhaust horizontal channel is arranged between left and right holes, the left end is connected with the left hole, and the right end is connected with the right hole; the inlet end of the smoke exhaust shaft is connected with the smoke exhaust horizontal channel through the top of the smoke exhaust horizontal channel; a left isolation door for opening and closing the smoke path between the left hole and the smoke exhaust horizontal channel is arranged at the left end of the smoke exhaust horizontal channel, and a right isolation door for opening and closing the smoke path between the right hole and the smoke exhaust horizontal channel is arranged at the right end of the smoke exhaust horizontal channel.
[0006] Further, the smoke exhaust shaft comprises a smoke exhaust vertical shaft and a smoke exhaust inclined shaft; the smoke exhaust inclined shaft is arranged obliquely upwards, and the end thereof is lower than the smoke gas outlet end; the smoke exhaust vertical shaft is arranged vertically, the bottom inlet thereof is connected to the top of the smoke exhaust horizontal channel, and the top outlet thereof is connected to the smoke exhaust inclined shaft through the bottom of the smoke exhaust inclined shaft.
[0007] Further, the end of the smoke exhaust inclined shaft is provided with a retaining wall for blocking the end port.
[0008] Further, the outer periphery of the smoke exhaust shaft is provided with a ring of shaft wall seats extending outward from the outer wall of the smoke exhaust shaft.
[0009] Further, the shaft wall seat is tapered, gradually expanding from top to bottom.
[0010] The beneficial effects of the utility model are: the highway tunnel smoke exhaust system disclosed by the utility model connects the left hole and the right hole through the smoke exhaust horizontal passage, and the smoke exhaust horizontal passage is connected with the smoke exhaust shaft, so that the left hole and the right hole share the same set of smoke exhaust passage, thereby simplifying the highway tunnel smoke exhaust system, making construction simpler, and greatly reducing the cost of the smoke exhaust system. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a prior art schematic diagram;
[0012] Figure 2 It is a structure schematic diagram of the utility model.
[0013] In the figure, the left hole 1, the right hole 2, the smoke exhaust horizontal passage 3, the left isolation door 4, the right isolation door 5, the smoke exhaust shaft 6, the smoke exhaust inclined shaft 7, the retaining wall 8, the shaft wall seat 9, the left communication passage 10, and the right communication passage 11. DETAILED DESCRIPTION
[0014] The utility model will be further described below in combination with the drawings and examples:
[0015] In the specification, except otherwise stated, the terms "vertical", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner" and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. Figure 1 It is only for the convenience of describing the utility model, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0016] The highway tunnel smoke exhaust system, as shown in the figure, comprises a smoke exhaust horizontal passage 3 and a smoke exhaust shaft. Figure 2 The smoke exhaust horizontal passage 3 is arranged between the left hole 1 and the right hole 2, and the left end is connected with the left hole 1 and the right end is connected with the right hole 2. The left isolation door 4 for opening and closing the smoke path between the left hole 1 and the smoke exhaust horizontal passage 3 is arranged at the left end of the smoke exhaust horizontal passage 3, and the right isolation door 5 for opening and closing the smoke path between the right hole 2 and the smoke exhaust horizontal passage 3 is arranged at the right end of the smoke exhaust horizontal passage 3.
[0017] The utility model discloses a highway tunnel smoke exhaust system, and the left hole 1 and right hole 2 are communicated by the smoke exhaust horizontal passage 3, and the smoke exhaust horizontal passage 3 is communicated with the smoke exhaust well, so that the smoke in the left hole 1 or right hole 2 can be exhausted into the smoke exhaust horizontal passage 3 and then exhausted by the smoke exhaust well. The left isolation door 4 and right isolation door 5 are arranged to be opened or closed according to the actual smoke exhaust requirement to achieve the smoke exhaust purpose. The specific smoke exhaust process is as follows:
[0018] When the left hole 1 needs to exhaust smoke, the right isolation door 5 is closed, and the left isolation door 4 is opened, so that the smoke in the left hole 1 enters the smoke exhaust horizontal passage 3 through the left isolation door 4, and the smoke entering the smoke exhaust horizontal passage 3 is isolated by the right isolation door 5 and cannot spread to the right hole 2, but can only be exhausted through the smoke exhaust well. Similarly, when the right hole 2 needs to exhaust smoke, the left isolation door 4 is closed, and the right isolation door 5 is opened, so that the smoke in the right hole 2 enters the smoke exhaust horizontal passage 3 through the right isolation door 5, and the smoke entering the smoke exhaust horizontal passage 3 is isolated by the left isolation door 4 and cannot spread to the left hole 1, but can only be exhausted through the smoke exhaust well. In this way, the left hole 1 and the right hole 2 share the same set of smoke exhaust passages, compared with the traditional independent smoke exhaust, sharing the same set of smoke exhaust passages makes the highway tunnel smoke exhaust system simplified, the construction is simpler, and the construction cost is greatly reduced. The smoke exhaust horizontal passage 3 is shared to exhaust the smoke to the smoke exhaust well, compared with the separately arranged communication passage for smoke exhaust, under the condition of the same cost, the diameter of the smoke exhaust horizontal passage 3 can be larger, which is beneficial to efficient smoke exhaust.
[0019] The inclined shaft can be directly arranged to communicate to the smoke exhaust horizontal passage 3, in the embodiment, preferably, the smoke exhaust well comprises a smoke exhaust vertical shaft 6 and a smoke exhaust inclined shaft 7; the smoke exhaust inclined shaft 7 is arranged to be inclined upward, and the end thereof is lower than the smoke outlet end; the smoke exhaust vertical shaft 6 is arranged vertically, and the bottom end inlet is connected to the top of the smoke exhaust horizontal passage 3, and the top end outlet is communicated to the smoke exhaust inclined shaft 7 from the bottom of the smoke exhaust inclined shaft 7.
[0020] Compared with the inclined shaft directly communicating to the smoke exhaust horizontal passage 3, the smoke exhaust vertical shaft 6 is arranged, first, the height difference between the smoke exhaust inclined shaft 7 and the smoke exhaust horizontal passage 3 is filled, and the length of the smoke exhaust inclined shaft 7 can be appropriately shortened; second, the smoke exhaust vertical shaft 6 and the smoke exhaust horizontal passage 3 are connected in a perpendicular mode, the intersection area is reduced, and the structural safety can be ensured; third, the smoke exhaust vertical shaft 6 can quickly collect the smoke and guide the smoke into the smoke exhaust inclined shaft 7.
[0021] In order to avoid that the smoke in the smoke exhaust inclined shaft 7 is too high and flows downward along the smoke exhaust inclined shaft 7, in the embodiment, the end of the smoke exhaust inclined shaft 7 is provided with a retaining wall 8 for blocking the end port.
[0022] In order to prevent the smoke exhaust vertical shaft 6 from sliding downward, in the embodiment, a circle of shaft wall seats 9 extending outward from the outer wall of the smoke exhaust vertical shaft 6 is arranged on the outer periphery of the smoke exhaust vertical shaft 6.
[0023] The well wall seat 9 can be cylindrical or the like, and in this embodiment, the well wall seat 9 is conical and gradually expands from top to bottom. The conical well wall seat 9 consumes less material and is lighter.
[0024] In the description of the present specification, it should be noted that unless specifically defined and limited, the terms "mounting", "provided with", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A smoke extraction system for highway tunnels, characterized in that: It includes a horizontal smoke exhaust channel (3) and a smoke exhaust well; the horizontal smoke exhaust channel (3) is located between the left hole (1) and the right hole (2), with its left end connected to the left hole (1) and its right end connected to the right hole (2); the entrance end of the smoke exhaust well is connected to the horizontal smoke exhaust channel (3) by the top of the horizontal smoke exhaust channel (3); a left isolation door (4) for opening and closing the smoke passage between the left hole (1) and the horizontal smoke exhaust channel (3) is provided at the left end of the horizontal smoke exhaust channel (3), and a right isolation door (5) for opening and closing the smoke passage between the right hole (2) and the horizontal smoke exhaust channel (3) is provided at the right end of the horizontal smoke exhaust channel (3); The exhaust shaft includes an exhaust vertical shaft (6) and an exhaust inclined shaft (7); the exhaust inclined shaft (7) is inclined upward, and its end is lower than the flue gas outlet end; the exhaust vertical shaft (6) is vertical, and its bottom inlet is connected to the top of the exhaust horizontal channel (3), and its top outlet is connected from the bottom of the exhaust inclined shaft (7) to the exhaust inclined shaft (7).
2. The highway tunnel smoke exhaust system as described in claim 1, characterized in that: The end of the flue gas vent (7) is provided with a retaining wall (8) to block the end port.
3. The highway tunnel smoke exhaust system as described in claim 1 or 2, characterized in that: The outer periphery of the smoke exhaust shaft (6) is provided with a shaft wall seat (9) that extends outward from the outer wall of the smoke exhaust shaft (6).
4. The highway tunnel smoke exhaust system as described in claim 3, characterized in that: The well wall seat (9) is a cone shape that gradually expands from top to bottom.