An electric lifting high-sealing smoke exhaust outlet

Abstract

This invention provides an electrically operated, high-sealing smoke exhaust outlet. Its transmission device employs a scissor-type double-crossarm transmission to drive the integral movable blades vertically up and down, thus opening and closing the exhaust outlet. Because the movable blades have an integral structure, there are no blade gaps, and fire-resistant sealing strips are provided around the blades and on the angle iron embedded in the flue plate. These dual measures improve air leakage when the exhaust outlet is closed. During a tunnel fire, smoke concentrates at the top. The movable blades descend and open, forcing smoke into the space between the movable blades and the flue plate, preventing smoke penetration and effectively ensuring exhaust efficiency. The airflow of the exhaust outlet can also be adjusted by regulating the distance L between the movable blades and the flue plate.

Description

Technical Field

[0001] This invention relates to the field of tunnel ventilation technology, specifically to an electrically operated, lifting, high-sealing smoke exhaust outlet. Background Technology

[0002] For traffic tunnels that frequently experience traffic congestion, as well as urban tunnels longer than 3000m and highway tunnels longer than 5000m, when segmented longitudinal smoke extraction is not feasible, a focused smoke extraction method should be adopted. This method involves installing smoke extraction ducts at the top or sides of the tunnel, with electrically operated smoke extraction outlets spaced at regular intervals (usually around 60m), and smoke extraction fans at both ends of the ducts. In case of fire, the smoke extraction fans and the electrically operated smoke extraction outlets near the fire source are activated to expel smoke from the tunnel. Currently, in the tunnel field, the smoke extraction outlets installed on the ducts are generally multi-bladed. These outlets consist of multiple stages of blades, and the opening and closing of the outlets are achieved by a four-bar linkage mechanism. Tunnel smoke extraction ducts typically require a set of smoke extraction outlets spaced 60 meters apart. Normally, the outlets are closed, but in case of fire, the sets of outlets near the fire point are opened. In practical applications, the focused smoke extraction system often proves ineffective, specifically in the following ways:

[0003] 1. Multi-blade exhaust outlets have the disadvantages of having a large number of blades, large gap area, poor sealing, and serious air leakage.

[0004] 2. The wind speed in the middle of the multi-bladed smoke exhaust outlet is low, while the wind speed around the edges is high, which can easily lead to suction-through and reduce smoke exhaust efficiency.

[0005] 3. The exhaust air volume of each smoke exhaust outlet is uneven. The closer to the tunnel ventilation fan, the greater the exhaust volume, and it is difficult to balance the air volume of each smoke exhaust outlet.

[0006] 4. The exhaust port has many components, poor pressure resistance, and is prone to falling off, posing a risk of safety issues.

[0007] Obviously, the longer the tunnel, the more smoke vents there are, and the worse the smoke extraction effect of the key smoke extraction system becomes, which poses a serious threat to the tunnel structure and personnel evacuation. Summary of the Invention

[0008] In view of the above problems, the present invention provides an electrically operated lifting high-sealing smoke exhaust outlet, which overcomes the problems of large air leakage, uneven air volume at the smoke exhaust outlet, easy suction failure at the smoke exhaust outlet, many parts, and poor wind pressure resistance in existing key smoke exhaust systems, thereby improving the safety and reliability of the project.

[0009] Specifically, the present invention provides an electrically lifting high-sealing smoke exhaust outlet, comprising: a base frame, movable blades, a transmission device, a slide rail, an electric actuator, channel steel, and a flue plate;

[0010] The flue plate has pre-drilled holes, and several channel steels are installed at the holes; the bottom frame is connected to the channel steels; the electric actuator is installed on the channel steels; the electric actuator is connected to the transmission device, and the electric actuator outputs power; the transmission device is connected to the movable blades, and the transmission device is also connected to the slide rail, which is installed on the channel steels and moves horizontally with the opening and closing of the movable blades.

[0011] Optionally, the electrically operated lifting high-sealing smoke exhaust outlet also includes: fireproof sealing strips;

[0012] Fireproof sealing strips are installed around the movable blades.

[0013] Optionally, the electrically operated lifting high-sealing smoke exhaust outlet also includes: angle iron;

[0014] An angle iron is pre-embedded within the lower air hole area of ​​the flue plate, and the lower surface of the angle iron is ensured to be on the same horizontal plane to ensure that it can fit tightly with the moving blade.

[0015] Optionally, a fireproof sealing strip is installed on the lower surface of the angle iron.

[0016] Optionally, the transmission device adopts a scissor-type double crossarm transmission method to control the opening and closing functions of the movable blade. Two points of the scissor-type crossarm are fixed to the movable blade, and the other two points are connected to the slide rail.

[0017] Optionally, the movable blade moves under the drive of the transmission device to achieve opening; by adjusting the distance between the movable blade and the flue plate, the purpose of preventing suction penetration and adjusting the air volume can be achieved.

[0018] Optionally, the movable blade is an integral piece, and the movable blade is painted as a whole to ensure that the surface of the movable blade is flat, without gaps or deformation.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention provides an electrically operated, high-sealing smoke exhaust outlet. Its transmission device employs a scissor-type double-crossarm transmission to drive the integral movable blades vertically up and down, thus opening and closing the exhaust outlet. Because the movable blades have an integral structure, there are no gaps between them. Furthermore, fire-resistant sealing strips are installed around the blades and on the angle iron embedded in the flue plate, improving air leakage when the exhaust outlet is closed. During a tunnel fire, smoke concentrates at the top. The movable blades descend and open, forcing smoke into the space between the blades and the flue plate, preventing smoke penetration and effectively ensuring exhaust efficiency. The airflow of the exhaust outlet can also be adjusted by regulating the distance between the movable blades and the flue plate.

[0021] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0022] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0023] Figure 1 This is a cross-sectional view of the smoke exhaust port of the present invention in the closed state.

[0024] Figure 2 This is a cross-sectional view of the smoke exhaust port of the present invention in the open / closed state.

[0025] Figure 3 This is a plan view of the smoke exhaust port of the present invention.

[0026] In the diagram: 1-base frame, 2-moving blade, 3-transmission device, 4-slide rail, 5-electric actuator, 6-channel steel, 7-fireproof sealing strip, 8-angle iron, 9-flue plate. Detailed Implementation

[0027] In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0028] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] This invention provides an electrically operated, lifting, high-sealing smoke exhaust outlet, which has the following advantages:

[0032] (1) It has good airtightness. The movable blade 2 is an integral structure with no blade gaps; at the same time, the angle iron 8 embedded around the blade and the flue plate is equipped with fireproof sealing strips 7, which can ensure that the movable blade 2 and the angle iron 8 are tightly fitted when the device is closed. The dual measures improve the air leakage of the flue outlet and have excellent sealing performance.

[0033] (2) It can effectively ensure smoke exhaust efficiency. When a tunnel fire occurs, the smoke is concentrated at the top. The movable blades descend and open, forcing the smoke to be drawn in from the space between the movable blades and the flue plate, which can prevent the smoke from being sucked through and effectively ensure smoke exhaust efficiency.

[0034] (3) It can realize the function of air volume adjustment. By adjusting the distance between the moving blade and the flue plate, the purpose of adjusting the air volume can be achieved.

[0035] like Figure 1-3 As shown, the present invention relates to an electrically operated lifting high-sealing smoke exhaust outlet, comprising: a base frame 1, movable blades 2, a transmission device 3, a slide rail 4, an electric actuator 5, a channel steel 6, and a flue plate 9.

[0036] The flue plate 9 has pre-drilled holes, and several channel steels 6 are installed at the holes; the bottom frame 1 is connected to the channel steels 6; the electric actuator 5 is installed on the channel steels 6; the electric actuator 5 is connected to the transmission device 3, and the electric actuator 5 outputs power; the transmission device 3 is connected to the movable blade 2, and the transmission device 3 is also connected to the slide rail 4, which is installed on the channel steel 6 and moves horizontally with the opening and closing of the movable blade 2.

[0037] In one embodiment, the electrically lifting high-sealing smoke exhaust outlet further includes: a fireproof sealing strip 7;

[0038] Fireproof sealing strips 7 are installed around the movable blade 2.

[0039] In one embodiment, the electrically lifting high-sealing smoke exhaust outlet further includes: angle iron 8;

[0040] Angle iron 8 is pre-embedded within the lower air hole range of flue plate 9. The lower surface of angle iron 8 is ensured to be on the same horizontal plane to ensure that it can fit tightly with movable blade 2.

[0041] In one embodiment, fireproof sealing strips 7 are installed on the lower surface of the angle iron 8 and around the movable blade 2 to provide a seal when closed.

[0042] In one embodiment, the transmission device 3 adopts a scissor-type double crossarm transmission method to control the opening and closing functions of the movable blade 2. Two points of the scissor-type crossarm are fixed to the movable blade 2, and the other two points are connected to the slide rail 4.

[0043] In one embodiment, the movable blade 2 moves under the drive of the transmission device 3 to achieve opening; by adjusting the distance L between the movable blade 2 and the flue plate 9, the purpose of preventing suction penetration and adjusting the air volume can be achieved.

[0044] In one embodiment, the movable blade 2 is an integral piece, and the movable blade 2 is treated with a baked enamel finish to ensure that the surface of the movable blade is flat, without gaps or deformation.

[0045] The electrically operated, high-sealing smoke exhaust outlet described in this embodiment of the invention is installed in the tunnel using an embedded installation method, without resistance and without affecting the tunnel's aesthetics. When the movable blade 2 is open, it forces the smoke to enter the smoke exhaust duct through the space between the movable blade 2 and the flue plate 9, preventing suction penetration. The airflow can be adjusted by regulating the distance L between the movable blade 2 and the flue plate 9. When the movable blade 2 is closed, it fits tightly against the angle iron 8 pre-embedded at the smoke exhaust outlet, achieving a seal.

[0046] The technical solutions of the present invention have been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to related technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of the present invention will fall within the scope of protection of the present invention.

Claims

1. An electrically operated, lifting, high-sealing smoke exhaust outlet, characterized in that, include: Base frame, movable blades, transmission device, slide rail, electric actuator, channel steel, flue plate; The flue plate has pre-drilled holes, and several channel steels are installed at the holes; the bottom frame is connected to the channel steels; the electric actuator is installed on the channel steels; the electric actuator is connected to the transmission device, and the electric actuator outputs power; the transmission device is connected to the movable blades, and the transmission device is also connected to the slide rail, which is installed on the channel steels and moves horizontally with the opening and closing of the movable blades; The transmission device adopts a scissor-type double crossarm transmission method to control the opening and closing function of the movable blade. Two points of the scissor-type crossarm are fixed to the movable blade, and the other two points are connected to the slide rail. When a tunnel fire occurs, the smoke concentrates at the top, and the movable blades move under the drive of the transmission device to open; by adjusting the distance between the movable blades and the flue plate, the purpose of preventing suction failure and regulating air volume can be achieved. The movable blade is a single piece, with no gaps between the blades.

2. The electrically operated, high-sealing smoke exhaust outlet according to claim 1, characterized in that, The electric lifting high-sealing smoke exhaust outlet also includes: fireproof sealing strips; Fireproof sealing strips are installed around the movable blades.

3. The electrically operated, high-sealing smoke exhaust outlet according to claim 1, characterized in that, The electric lifting high-sealing smoke exhaust outlet also includes: angle iron; An angle iron is pre-embedded within the lower air hole area of ​​the flue plate, and the lower surface of the angle iron is ensured to be on the same horizontal plane to ensure that it can fit tightly with the moving blade.

4. The electrically operated, high-sealing smoke exhaust outlet according to claim 3, characterized in that, Fireproof sealing strips are installed on the lower surface of the angle iron.

5. The electrically operated, high-sealing smoke exhaust outlet according to claim 1, characterized in that, The active blades are treated with overall baking paint.

Images