CN107060865B - Auxiliary smoke discharging system for rail transit totally-enclosed platform door - Google Patents

Abstract

The invention discloses an auxiliary smoke exhaust system for fully enclosed platform doors of rail transit. It includes a heat exhaust air channel and an air hole, the heat exhaust air channel is arranged directly above the train, the air hole is arranged on the side wall adjacent to the platform public area of the heat exhaust air channel; the air valve device is installed on the air In the hole; the air valve equipment includes an outer frame of the air valve, a rotating shaft bearing fixing seat, a rotating shaft bearing, a rotating shaft of the valve plate, a valve plate, and an actuator, and the rotating shaft of the valve plate, the valve plate, and the actuator are located in the outer frame of the air valve Inside; the rotating shaft bearing fixing seat is fixedly connected to the upper end surface of the air valve outer frame, the rotating shaft bearing is installed in the rotating shaft bearing fixing seat, the valve plate rotating shaft is installed in the rotating shaft bearing, and the valve plate is fixedly connected to the On the rotating shaft of the valve plate; the lower end of the valve plate is provided with a square notch, and the actuator is arranged in the square notch. The utility model has the advantages of avoiding opening the platform door in the event of a fire, and exerting the smoke exhausting function immediately after a fire occurs, and having the advantages of reliable structure and low cost.

Description

Auxiliary smoke exhaust system for rail transit fully enclosed platform doors

technical field

The invention relates to the field of rail transit ventilation equipment, in particular to an auxiliary smoke exhaust system for fully enclosed platform doors of rail transit.

Background technique

The current "Subway Design Code" (GB 50157-2013) stipulates that when a fire breaks out on a station platform, it should be ensured that the stairs and escalators from the station hall to the platform have an airflow that can effectively prevent the smoke from spreading upwards, and that the downward airflow velocity is not high. It should be less than 1.5m/s. In order to meet the requirements of the regulations, tunnel fans and heat exhaust fans are commonly used to assist smoke exhaust on the currently opened lines. Since the current underground stations generally use fully enclosed platform doors, the first and last doors need to be opened after the tunnel fans and heat exhaust fans are turned on. A platform door is used as a path for smoke exhaust. Due to the spread of smoke during a fire and poor visibility, there is a risk of passengers falling after opening the platform door. In addition, in the event of a fire, it is necessary to manually confirm that the station will not pass trains before opening the platform door. Smoke spreads rapidly during a fire, and platform doors that cannot be opened immediately will delay the timing of disaster relief and increase casualties.

Contents of the invention

The purpose of the present invention is to provide an auxiliary smoke exhaust system for fully enclosed platform doors of rail transit, which can avoid opening the platform doors in case of fire, and can exhaust smoke immediately after a fire occurs, with reliable structure and low cost.

In order to achieve the above object, the technical solution of the present invention is: a rail transit fully enclosed platform door auxiliary smoke exhaust system, including a heat exhaust air channel and an air hole, the heat exhaust air channel is arranged directly above the train, and it is characterized in that: the air hole It is installed on the side wall adjacent to the heat exhaust air channel and the platform public area; the air valve device is installed in the air hole; the air valve device includes the air valve outer frame, the rotating shaft bearing fixing seat, the rotating shaft bearing, and the valve plate Rotating shaft, valve plate, and actuator, the rotating shaft bearing fixing seat, rotating shaft bearing, valve plate rotating shaft, valve plate, and actuator are located in the outer frame of the air valve; the rotating shaft bearing fixing seat is fixedly connected to the outside of the air valve The upper end surface of the frame, the rotating shaft bearing is installed in the rotating shaft bearing fixing seat, the valve disc rotating shaft is installed in the rotating shaft bearing, and the valve disc is fixedly connected to the valve disc rotating shaft; the two ends of the valve disc opening spring are respectively The valve plate is connected to the upper end surface of the outer frame of the damper; the lower end of the valve plate is provided with a square notch, and the actuator is arranged in the square notch and is located in the middle of the lower end surface of the outer frame of the damper.

In the above technical solution, the rotating shaft bearing is a stainless steel rotating shaft bearing; the valve plate is an aluminum alloy valve plate. Make the air valve device move quickly and reliably.

In the above technical solution, the actuator includes a valve plate fixing fork, an actuator housing, a valve plate fixing fork rotating shaft, a damper terminal, an electromagnet, a latching return spring, a latching valve, a valve plate fixing fork returning spring, a reset Steel wire rope, valve plate fixing fork limit post, the valve plate fixing fork rotating shaft, electromagnet, locking bamboo return spring, locking bamboo, valve plate fixing fork return spring, valve plate fixing fork limiting column are all located in the actuator shell Inside, the lower end of the valve plate fixing fork is located in the actuator housing, the upper end protrudes from the upper end of the actuator housing and is located below the valve plate, the upper end of the valve plate fixing fork is concave, and the valve plate is fixed The opening of the upper end of the fork is larger than the thickness of the valve plate; the electromagnet is arranged on the lower end surface of the actuator housing, and the upper and lower ends of the latch return spring are connected to the latch and the electromagnet respectively, and the latch Set in the wedge-shaped groove at the lower end of the valve plate fixing fork, the two ends of the valve plate fixing fork return spring are respectively connected to the side wall of the actuator housing and the lower end of the valve plate fixing fork; Through the lower part of the valve plate fixing fork, one end of the air valve terminal is connected to the electromagnet, and the other end extends out of the side wall of the actuator housing; one end of the reset wire rope is connected to the valve plate fixing fork and the other end protrudes from the side wall of the actuator housing; the valve plate fixing fork limit column is arranged above the side of the valve plate fixing fork rotating shaft. It can play the role of smoke exhaust in the first time when a fire occurs, and the structure is reliable.

The present invention has the following advantages:

(1) The present invention can give full play to the auxiliary smoke exhaust function of the tunnel fan and heat exhaust fan, avoid opening the platform door in the event of a fire, and can exert the smoke exhaust effect at the first time when the fire occurs, with reliable structure; The risk of passengers falling after opening the platform door in the smoke system and the waste of smoke exhaust time when manually confirming that the train will no longer pass through the station;

(2) The air hole is reserved for civil engineering, which hardly increases the cost; the air valve equipment is low in cost, reliable in action, and requires no maintenance;

(3) Air holes are set to connect the public area of the platform with the air duct on the top of the track, and air valve equipment is installed at the connection to shut off the connection between the public area of the platform and the air duct on the top of the rail under normal working conditions. Open the connection between the public area of the platform and the air exhaust duct on the top of the track, so as to use the tunnel fan and heat exhaust fan in the subway station to assist the smoke exhaust in the public area of the platform; The valve equipment has the characteristics of low start-up current and high reliability; the air valve equipment has the characteristics of non-electric drive, and the shaft bearing is installed on the rotating shaft of the valve plate. The power of the air valve action comes from the mechanical spring, and the air valve action is fast and reliable.

Description of drawings

FIG. 1 is a schematic diagram of a cross-sectional structure of an existing typical subway station.

Fig. 2 is a schematic diagram of the cross-sectional structure of the subway station of the present invention.

Fig. 3 is a schematic diagram of the axonometric structure of the damper device of the present invention.

FIG. 4 is a schematic diagram of the cross-sectional structure along line A-A of FIG. 3 .

FIG. 5 is a schematic diagram of the B-B section structure in FIG. 3 .

Fig. 6 is a schematic structural view of the shaft bearing fixing seat of the present invention.

Fig. 7 is a schematic structural diagram of the actuator of the present invention.

Fig. 8 is a schematic diagram of the A-A sectional structure of Fig. 3 after the damper device of the present invention is opened.

Fig. 9 is a schematic diagram of the B-B sectional structure of Fig. 3 after the damper device of the present invention is opened.

Fig. 10 is a schematic diagram of the A-A sectional structure of Fig. 3 when the damper device of the present invention is reset.

In the figure 1-damper frame, 2-rotating shaft bearing fixing seat, 3-rotating shaft bearing, 4-valve disc rotating shaft, 5-valve disc, 6-valve disc fixing fork, 7-actuator shell, 8-valve disc fixing Fork shaft, 9-air valve terminal, 10-electromagnet, 11-return spring for clamping bamboo, 12-resetting spring for clamping bamboo, 13-resetting spring for valve fixed fork, 14-resetting wire rope, 15-limiting column for valve fixed fork , 16-valve opening spring, 17-exhaust heat air duct, 18-air hole, 19-air valve equipment, 20-actuator.

Detailed ways

The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, and are only examples. At the same time, the advantages of the present invention are clearer and easier to understand through the description.

Referring to the accompanying drawings, it can be seen that the auxiliary smoke exhaust system for fully enclosed platform doors of rail transit includes a heat exhaust air channel 17 and an air hole 18. The heat exhaust air channel 17 is arranged directly above the train, and it is characterized in that the air hole 18 is arranged on Said exhaust heat air channel 17 is adjacent to the side wall of the platform public area, (as shown in Figure 2); Damper equipment 19 is installed in said air hole 18; Said damper equipment 19 comprises damper outer frame 1, Rotating shaft bearing fixing seat 2, rotating shaft bearing 3, valve disc rotating shaft 4, valve disc 5, and actuator 20, the rotating shaft bearing fixing seat 2, rotating shaft bearing 3, valve disc rotating shaft 4, valve disc 5, and actuator 20 are located in the Inside the air valve outer frame 1; the rotating shaft bearing fixing seat 2 is connected to the upper end surface of the air valve outer frame 1, the rotating shaft bearing 3 is installed in the rotating shaft bearing fixing seat 2, and the valve plate rotating shaft 4 is installed on In the shaft bearing 3, the valve plate 5 is fixedly connected to the valve plate rotating shaft 4; the valve plate rotates around the valve plate rotating shaft to open or close the valve;

The two ends of the valve plate opening spring 16 are respectively connected to the upper end surface of the valve plate 5 and the damper frame 1; The square notch is located in the middle of the lower end surface of the damper outer frame 1 .

The rotating shaft bearing 3 is a stainless steel rotating shaft bearing; the valve plate 5 is an aluminum alloy valve plate.

The actuator 20 includes a valve plate fixing fork 6, an actuator housing 7, a valve plate fixing fork rotating shaft 8, a damper terminal 9, an electromagnet 10, a locking bamboo return spring 11, a locking bamboo 12, and a valve plate fixing fork returning spring 13. Resetting steel wire rope 14, valve plate fixing fork limit post 15, said valve plate fixing fork rotating shaft 8, electromagnet 10, locking bamboo return spring 11, locking bamboo shoot 12, valve plate fixing fork reset spring 13, valve plate fixing fork The limit posts 15 are all located in the actuator housing 7, the lower end of the valve plate fixing fork 6 is located in the actuator housing 7, the upper end protrudes from the upper end of the actuator housing 7 and is located below the valve plate 5, The upper end of the valve plate fixing fork 6 is concave, and the opening of the upper end of the valve plate fixing fork 6 is larger than the thickness of the valve plate 5; the electromagnet 10 is arranged on the lower end surface of the actuator housing 7, and the clamping bamboo The upper and lower ends of the return spring 11 are respectively connected to the clamping shoot 12 and the electromagnet 10, the clamping shoot 12 is arranged in the wedge-shaped groove at the lower end of the valve plate fixing fork 6, and the two valve plate fixing fork return springs 13 are The ends are connected to the side wall of the actuator housing 7 and the lower end of the valve plate fixing fork 6 respectively; Rotate, when the valve plate fixing fork is upright, it can fix the valve plate and close the valve;

One end of the air valve terminal 9 is connected to the electromagnet 10, and the other end protrudes from the side wall of the actuator housing 7; one end of the reset wire rope 14 is connected to the valve plate fixing fork 6, and the other end is One end protrudes from the side wall of the actuator housing 7; the valve plate fixing fork limit column 15 is arranged above the side of the valve plate fixing fork rotating shaft 8 (as shown in Figure 4, Figure 5, Figure 6, and Figure 7) .

The working process of the rail transit fully enclosed platform door auxiliary smoke exhaust system of the present invention is as follows: the electromagnet operating voltage is selected as DC24V, each air valve device 19 uses the same control box, and the control box can receive the fire alarm system. Fire signal, and output 24V direct current to drive the electromagnet action in each air valve device 19, open the air valve device 19, connect the public area of the platform and the tunnel through the air hole 18, and make the tunnel fan and heat exhaust fan play the role of auxiliary smoke exhaust; During a fire, the platform door remains closed, and the smoke enters the exhaust heat duct 17 through the air holes 18, part of which is discharged by the heat exhaust fan through the heat exhaust duct 17, and part of which enters the tunnel through the air holes on the bottom surface of the heat exhaust duct, and is discharged by the tunnel fan.

The working process of the damper device of the present invention is as follows: when the damper device needs to be opened, the electromagnet 10 attracts the latch 12 to move down when the damper device 19 is energized, compresses the latch return spring 11, and releases the force on the valve plate fixing fork 6 Restriction, the valve plate fixed fork 6 rotates around the valve plate fixed fork rotating shaft 8 under the traction of the valve plate fixed fork return spring 13, and the valve plate 5 rotates around the valve plate rotating shaft 4 under the traction of the valve plate opening spring 16, and the valve is opened (such as Shown in Fig. 8 and Fig. 9); when the air valve equipment needs to be closed, manually pull back the valve plate 5 to the vertical position, pull the reset wire rope 14 on the actuator 20, the valve plate fixing fork 6 rises, fix the valve plate 5, and simultaneously The clamp 12 restricts the movement of the fixed fork 6 of the valve plate (as shown in FIG. 10 ), and closes the valve.

In order to more clearly illustrate the advantages of the rail transit fully enclosed platform door auxiliary smoke exhaust system described in the present invention compared with the existing rail transit platform layer smoke exhaust system, the staff compared the two technical solutions , and the comparison results are as follows:

As can be seen from the above table, compared with the existing rail transit platform floor smoke exhaust system, the rail transit fully enclosed platform door auxiliary smoke exhaust system described in the present invention does not need to open the platform door in case of fire, and does not need to manually confirm that the station will not pass trains again. , It can play the role of smoke exhaust in the first time when a fire occurs.

Other unspecified parts belong to the prior art.

Claims (2)

1. Auxiliary smoke exhaust system for fully enclosed platform doors of rail transit, including heat exhaust air duct (17) and air hole (18), the heat exhaust air duct (17) is arranged directly above the train, and it is characterized in that: the air hole ( 18) It is arranged on the side wall adjacent to the heat exhaust air channel (17) and the public area of the platform; the air valve equipment (19) is installed in the air hole (18); the air valve equipment (19) includes air Valve outer frame (1), rotating shaft bearing fixing seat (2), rotating shaft bearing (3), valve plate rotating shaft (4), valve plate (5), actuator (20), said rotating shaft bearing fixing seat (2), The rotating shaft bearing (3), the valve disc rotating shaft (4), the valve disc (5), and the actuator (20) are located in the air valve outer frame (1); the rotating shaft bearing fixing seat (2) is fixedly connected to the On the upper end surface of the air valve outer frame (1), the rotating shaft bearing (3) is installed in the rotating shaft bearing fixing seat (2), and the valve plate rotating shaft (4) is installed in the rotating shaft bearing (3). The valve plate (5) is fixedly connected to the valve plate rotating shaft (4); the two ends of the valve plate opening spring (16) are respectively connected to the upper end surface of the valve plate (5) and the outer frame of the damper (1); The lower end of the valve plate (5) is provided with a square notch, and the actuator (20) is arranged in the square notch and is located in the middle of the lower end surface of the damper frame (1); the actuator (20) includes a valve plate Fixing fork (6), actuator housing (7), valve plate fixing fork shaft (8), air valve terminal (9), electromagnet (10), latching spring return spring (11), latching bamboo (12), Valve plate fixed fork return spring (13), reset steel wire rope (14), valve plate fixed fork limit post (15), described valve plate fixed fork rotating shaft (8), electromagnet (10), card shoot return spring (11 ), snap shoots (12), valve plate fixing fork return spring (13), valve plate fixing fork limit post (15) are all located in the actuator housing (7), and the valve plate fixing fork (6) lower end Located in the actuator housing (7), the upper end protrudes from the upper end of the actuator housing (7) and is located below the valve plate (5), the upper end of the valve plate fixing fork (6) is concave, and the valve plate The opening of the upper end of the fixed fork (6) is larger than the thickness of the valve plate (5); the electromagnet (10) is arranged on the lower end surface of the actuator housing (7), and the upper and lower ends of the snap back spring (11) Connect the snap shoot (12) and the electromagnet (10) respectively, the snap shoot (12) is arranged in the wedge-shaped groove at the lower end of the valve plate fixing fork (6), and the valve plate fixing fork return spring (13) Both ends are respectively connected to the side wall of the actuator housing (7) and the lower end of the valve plate fixing fork (6); the valve plate fixing fork shaft (8) traverses the valve plate fixing fork (6) In the lower part, one end of the air valve terminal (9) is connected to the electromagnet (10), and the other end protrudes from the side wall of the actuator housing (7); one end of the reset wire rope (14) is connected to the On the valve plate fixing fork (6), and the other end protrudes from the side wall of the actuator housing (7); the valve plate fixing fork limit post (15) is arranged on the valve plate fixing fork shaft (8) Above the side; the rotating shaft bearing (3) is a stainless steel rotating shaft bearing. 2. The auxiliary smoke exhaust system for fully enclosed platform doors of rail transit according to claim 1, characterized in that: the valve plate (5) is an aluminum alloy valve plate.

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