Power plant fire smoke guide and exhaust device

Abstract

The utility model relates to the technical field of fire smoke exhaust systems, in particular to a power plant fire smoke guide and exhaust device which comprises a folding smoke guide channel structure, a smoke suction fan set and a smoke exhaust channel structure, the folding smoke guide channel structure comprises a top plate, fireproof cloth and a bottom plate, and the fireproof cloth is fixed between the top plate and the bottom plate. The smoke suction fan set comprises a plurality of axial flow suction fans arranged at equal intervals, the smoke exhaust channel structure comprises a smoke exhaust pipeline and a smoke exhaust fan communicating with the middle of the smoke exhaust pipeline, and the smoke exhaust pipeline penetrates through the ceiling plate and the top plate. And a winch mechanism for lifting the bottom plate is arranged at the top end of the ceiling plate. When a fire disaster occurs, the bottom plate is lowered, the fireproof cloth is unfolded, the smoke suction fan set and the smoke exhaust fan are started, dense smoke in the channel can be rapidly sucked into the inner area of the fireproof cloth and is intensively exhausted through the smoke exhaust fan and the smoke exhaust channel, the smoke exhaust efficiency is greatly improved, the bottom plate is lifted to fold the fireproof cloth under the daily condition, and the occupied space is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of fire smoke exhaust systems, specifically to a fire smoke exhaust device for power plants. Background Technology

[0002] Power plant fires generate smoke that carries a large amount of heat, with temperatures reaching hundreds of degrees Celsius. When the smoke enters a safety passage, the high temperature can quickly burn the skin. The smoke contains a large number of toxic substances, such as carbon monoxide, hydrogen cyanide, and hydrogen chloride. These gases are colorless and odorless, and inhalation can lead to oxygen deficiency, organ damage, and even death. Dense smoke can severely reduce visibility in the passage, making it difficult for escaping personnel to orient themselves. Currently, the ventilation systems designed in power plant escape passages have low-lying air intakes, but smoke is generally located in the upper part of the passage, making it difficult to absorb and remove the smoke. Improvements are urgently needed. Therefore, we propose a smoke-guiding and exhaust device for power plant fires. Utility Model Content

[0003] In view of the above-mentioned technical problems in related technologies, this utility model provides a power plant fire smoke guiding and exhaust ventilation device, which can solve the above problems.

[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0005] A smoke guiding and exhaust device for power plant fires includes a foldable smoke guiding channel structure, a smoke extraction fan assembly, and an exhaust channel structure. The foldable smoke guiding channel structure includes a top plate, a fireproof cloth, and a bottom plate. The fireproof cloth is fixed between the top plate and the bottom plate. The smoke extraction fan assembly includes several axial flow fans arranged at equal intervals. All of the axial flow fans are connected through the bottom plate. The top plate is fixed below the bottom of the suspended ceiling. The exhaust channel structure includes an exhaust pipe and an exhaust fan connected to the middle of the exhaust pipe. The exhaust pipe passes through the suspended ceiling and the top plate.

[0006] A winch mechanism for lifting and lowering the base plate is installed at the top of the ceiling panel.

[0007] Furthermore, the winch mechanism includes a winch drum, a drive motor for driving the winch drum to rotate, and a wire rope wound on the surface of the winch drum. The wire rope passes through the ceiling slab and the top slab, and one end of the wire rope is fixed to the top surface of the bottom slab.

[0008] Furthermore, there are two winch mechanisms, which are symmetrically arranged about the vertical center line of the top plate. The fixed ends of the wire rope and the bottom plate are located between two adjacent axial flow fans.

[0009] Furthermore, the smoke inlet of the exhaust duct is integrally formed with a vertical pipe, which is perpendicular to the exhaust duct and passes through the ceiling panel and the top panel in sequence.

[0010] Furthermore, the fireproof cloth outer wall is integrally molded with V-shaped folds.

[0011] Furthermore, several screws are fixedly installed on the top surface of the ceiling panel, and all the screws penetrate the ceiling panel and are threadedly connected to the pressure caps.

[0012] The beneficial effects of this utility model are as follows: In the event of a fire, the device lowers the base plate and unfolds the fireproof cloth, and starts the smoke extraction fan group and the smoke exhaust fan. This can quickly draw the dense smoke in the passage into the internal area of ​​the fireproof cloth and then concentrate it away through the smoke exhaust fan and the smoke exhaust passage, greatly improving the smoke removal efficiency. Under normal circumstances, the base plate is raised and the fireproof cloth is folded to reduce the space occupied. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the smoke extraction and ventilation system for power plant fires;

[0016] Figure 2 This is a partial sectional view of the smoke extraction and ventilation system for power plant fires.

[0017] In the picture:

[0018] 1. Top plate; 2. Fireproof cloth; 3. Base plate; 4. Smoke extraction fan assembly; 5. Screw; 6. Pressure cap; 7. Winch drum; 8. Drive motor; 9. Smoke exhaust duct structure; 901. Vertical pipe; 10. Ceiling plate; 11. Smoke exhaust fan; 12. Steel wire rope. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0020] like Figure 1-2As shown, this utility model discloses a smoke guiding and exhaust device for power plant fires, including a foldable smoke guiding channel structure, a smoke extraction fan group 4, and an exhaust channel structure 9. The foldable smoke guiding channel structure includes a top plate 1, a fireproof cloth 2, and a bottom plate 3. The fireproof cloth 2 is fixed between the top plate 1 and the bottom plate 3. The smoke extraction fan group 4 includes several axial flow fans arranged at equal intervals. The several axial flow fans are all connected through the bottom plate 3. The top plate 1 is fixed below the bottom of the suspended ceiling 10. The exhaust channel structure 9 includes an exhaust pipe and an exhaust fan 11 connected to the middle of the exhaust pipe. The exhaust pipe passes through the suspended ceiling 10 and the top plate 1.

[0021] The top of the ceiling panel 10 is equipped with a winch mechanism for lifting and lowering the base plate 3.

[0022] Example 1: The ceiling panel 10 is installed at the top of the fire escape route. The ceiling panel 10 is used to conceal the smoke exhaust duct, smoke exhaust fan 11, winch 7, and drive motor 8 of the smoke exhaust duct structure 9. The screw 5 of the top plate 1 passes through the ceiling panel 10 and is screwed on with the cover 6 to fix the screw 5 to the ceiling panel 10. The wire rope 12 passes through the ceiling panel 10 and the top plate 1 and is fixed to the surface of the bottom plate 3. When the drive motor 8 rotates forward, it drives the winch 7 to wind up the wire rope 12, which can lift the bottom plate 3 to accommodate the folded fireproof shield. Fireproof cloth 2 is made of fiberglass fireproof cloth, which can withstand high temperatures of 500℃-1000℃. When the drive motor 8 reverses, it drives the winch drum 7 to release the steel wire rope 12, which can lower the bottom plate 3 and unfold the folded fireproof cloth 2. The start and stop of the smoke exhaust fan 11 and the smoke extraction fan group 4 are controlled by independent fan controllers. The forward and reverse rotation of the drive motor 8 is controlled by an independent controller. The power of the smoke exhaust fan 11, the smoke extraction fan group 4 and the drive motor 8 is all obtained by connecting the power supply to the power source through wires.

[0023] In the preferred technical solution, the winch mechanism includes a winch drum 7, a drive motor 8 for driving the winch drum 7 to rotate, and a steel wire rope 12 wound on the surface of the winch drum 7. The steel wire rope 12 passes through the ceiling plate 10 and the top plate 1, and one end of the steel wire rope 12 is fixed to the top surface of the bottom plate 3. The winch mechanism raises and lowers the bottom plate 3 by winding the steel wire rope 12, thereby facilitating the unfolding and folding of the fireproof cloth 2.

[0024] In the preferred technical solution, there are two winch mechanisms, which are symmetrically arranged about the vertical center line of the top plate 1. The fixed ends of the wire rope 12 and the bottom plate 3 are located between two adjacent axial flow suction fans. The fixed ends of the wire rope 12 and the bottom plate 3 are staggered from the positions of the axial flow suction fans to ensure the stability of the fixed ends of the wire rope 12 and the bottom plate 3.

[0025] In the preferred technical solution, the smoke inlet of the smoke exhaust duct is integrally formed with a vertical pipe 901. The vertical pipe 901 is perpendicular to the smoke exhaust duct. The vertical pipe 901 passes through the ceiling plate 10 and the top plate 1 in sequence. The vertical pipe 901 guides the smoke in the fireproof cloth 2 area to the smoke exhaust duct, and the smoke in the fireproof cloth 2 area in the smoke exhaust duct is quickly discharged by the smoke exhaust fan 11.

[0026] In the preferred technical solution, the outer wall of the fireproof cloth 2 is integrally formed with a V-shaped fold, and the outer wall of the fireproof cloth 2 is attached with a V-shaped fold elastic metal wire, so that the V-shaped fold is formed. When the fireproof cloth 2 is folded, it can be folded along the V-shaped fold, which improves the neatness of the fireproof cloth 2 after folding.

[0027] In the preferred technical solution, a number of screws 5 are fixedly installed on the top surface of the top plate 1. The screws 5 all pass through the ceiling plate 10 and are threadedly connected to the cover 6. After the screws 5 of the top plate 1 pass through the ceiling plate 10, the cover 6 is screwed on to fix the screws 5 to the ceiling plate 10. The cover 6 can also cover the gap between the screws 5 and the point of penetration of the ceiling plate 10.

[0028] In practical use, when a fire occurs and the smoke concentration in the passage is high, the control drive motor 8 reverses to drive the winch drum 7 to release the steel wire rope 12, which can lower the base plate 3 to unfold the folded fireproof cloth 2. The smoke exhaust fan 11 and the smoke extraction fan group 4 are started. The smoke enters the area of ​​the fireproof cloth 2 through the smoke extraction fan group 4, and then is centrally discharged through the vertical pipe 901, the smoke exhaust passage and the smoke exhaust fan 11. In normal operation, the drive motor 8 rotates forward to drive the winch drum 7 to wind up the steel wire rope 12, which can raise the base plate 3 to store the folded fireproof cloth 2, and the smoke exhaust fan 11 and the smoke extraction fan group 4 are turned off.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power plant fire smoke-guiding exhaust device, characterized by, The system includes a foldable smoke guide channel structure, a smoke extraction fan assembly (4), and a smoke exhaust channel structure (9). The foldable smoke guide channel structure includes a top plate (1), a fireproof cloth (2), and a bottom plate (3). The fireproof cloth (2) is fixed between the top plate (1) and the bottom plate (3). The smoke extraction fan assembly (4) includes several axial flow fans arranged at equal intervals. The several axial flow fans are all connected through the bottom plate (3). The top plate (1) is fixed below the bottom of the ceiling panel (10). The smoke exhaust channel structure (9) includes a smoke exhaust pipe and a smoke exhaust fan (11) connected to the middle of the smoke exhaust pipe. The smoke exhaust pipe passes through the ceiling panel (10) and the top plate (1). The top of the ceiling panel (10) is provided with a winch mechanism for lifting and lowering the base plate (3).

2. A power plant fire smoke-guiding exhaust device according to claim 1, characterized in that, The winch mechanism includes a winch drum (7), a drive motor (8) for driving the winch drum (7) to rotate, and a wire rope (12) wound on the surface of the winch drum (7). The wire rope (12) passes through the ceiling plate (10) and the top plate (1), and one end of the wire rope (12) is fixed to the top surface of the bottom plate (3).

3. A power plant smoke-guiding exhaust device for fire according to claim 2, characterized in that, The number of winch mechanisms is two, and the two winch mechanisms are symmetrically arranged about the vertical center line of the top plate (1). The fixed ends of the wire rope (12) and the bottom plate (3) are located between the two adjacent axial flow fans.

4. A power plant smoke-guiding exhaust device according to claim 1, characterized in that, The smoke inlet of the exhaust duct is integrally formed with a vertical pipe (901), which is perpendicular to the exhaust duct. The vertical pipe (901) passes through the ceiling panel (10) and the top panel (1) in sequence.

5. A power plant smoke guiding and exhausting device in case of fire according to claim 1, characterized in that, The fireproof cloth (2) has an integrally formed outer wall with a V-shaped fold.

6. A power plant smoke guiding and exhausting device in case of fire according to claim 1, characterized in that, The top surface of the top plate (1) is fixedly provided with several screws (5), and the screws (5) all penetrate the ceiling plate (10) and are threadedly connected to the pressure cap (6).

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