Urban rail transit fire alarm device

Abstract

This invention discloses a fire alarm device for urban rail transit, comprising: a housing; a pushing device disposed within the housing; a solid initiating agent package disposed within the housing; a pulse igniter disposed within the housing, with a terminal block at its top and a moving rod at its bottom, wherein multiple spikes are spaced apart on one side of the moving rod; a power supply with a terminal block at its bottom; a housing, wherein a cylindrical baffle is disposed in the middle, forming an air jet channel that communicates with the interior of the housing; the moving rod is located within the air jet channel; a closed area enclosed by the outer wall of the baffle and the inner wall of the housing is filled with fire extinguishing dry powder; multiple openings are spaced apart on the baffle, each opening being sealed by a thin film; each thin film on the side near the moving rod is connected to the moving rod, with one spike corresponding to one opening; a signal collector; a sound alarm; and a controller. This invention can quickly trigger an alarm via the sound alarm and extinguish the fire.

Description

Technical Field

[0001] This invention relates to the field of rail transit safety. More specifically, this invention relates to fire alarm devices for urban rail transit. Background Technology

[0002] Rail transit has experienced rapid development in recent years due to its advantages such as large passenger capacity, safety, and comfort. However, because of the high density of passengers and the special working environment, it is difficult for people to escape in the event of a fire, making fire safety of rail transit particularly important.

[0003] Existing fire alarm devices, such as the automatic alarm device for rail transit security (application number 201921829811.7), transfer external temperature to the trigger block via a heat-conducting rod, causing the heat-expanding material inside the trigger block to expand. Subsequently, the external elastic rubber expands outward, thereby prompting the pulse igniter to move into the solid generator to produce nitrogen. However, there is a problem that the fire has been going on for some time, but the external temperature has not been transferred to the heat-conducting rod, resulting in a delayed alarm. Summary of the Invention

[0004] The purpose of this invention is to provide a fire alarm device for urban rail transit. By setting up a signal acquisition device, it can quickly obtain monitoring data, and then quickly move the pulse igniter through a pushing device to generate nitrogen gas, and can quickly sound an alarm through an audible alarm.

[0005] To achieve these objectives and other advantages of the present invention, a fire alarm device for urban rail transit is provided, comprising:

[0006] Shell 1, which is hollow inside;

[0007] A driving device is disposed within the housing.

[0008] A solid generator package is disposed within the housing one;

[0009] The pulse igniter is housed within the housing and has a terminal block at its top and a vertically mounted movable rod at its bottom. Multiple spikes are spaced apart on one side of the movable rod. The ignition end of the pulse igniter is opposite to and a certain distance away from the solid generator pack.

[0010] The power supply has two terminals at its bottom.

[0011] The second housing is located below the first housing. A cylindrical baffle is provided in the middle of the second housing, forming a jet channel that communicates with the interior of the first housing. The moving rod is located within the jet channel and is spaced a certain distance from the baffle. The enclosed area formed by the outer wall of the baffle and the inner wall of the second housing is filled with fire extinguishing dry powder. The baffle has multiple openings spaced apart, each sealed by a thin film. Each film on the other side near the moving rod is connected to the moving rod, with one piercing corresponding to one opening. The pushing device can move the pulse igniter from the first position toward the solid generating agent pack to the second position. When the pulse igniter is in the second position, terminal one and terminal two are connected, and the ignition end enters the solid generating agent pack. The moving rod pulls open the films connected to it, and the piercing pierces the film at the corresponding opening.

[0012] Signal acquisition device;

[0013] Sound alarm;

[0014] The controller is connected to the signal acquisition unit, the actuator, and the sound alarm.

[0015] Preferably, the urban rail transit fire alarm device further includes:

[0016] A pull rod, the middle of which passes through the moving rod, and the two ends of which pass through the housing one respectively. A push block is provided on the pull rod, and the push block is located on the other side of the moving rod. When the pull rod moves in the same direction as the pushing direction of the pushing device, the push block can push the connecting rod to move along the moving direction of the pull rod to the connection of terminal one and terminal two. At the same time, the ignition end enters the solid generator bag. The moving rod pulls open the films connected to it, and the piercing body pierces the film at the corresponding opening.

[0017] Preferably, the urban rail transit fire alarm device further includes:

[0018] A fixing plate is fixed inside the housing, and the pull rod and the pulse igniter both pass through the fixing plate. The fixing plate is perpendicular to the pull rod.

[0019] Multiple springs are spaced apart between the fixed plate and the pulse igniter. The two ends of each spring are connected to the fixed plate and the pulse igniter, respectively. When the pulse igniter is in the first position, the springs are in their natural state.

[0020] Preferably, in the urban rail transit fire alarm device, the baffle is in the shape of a square tube.

[0021] Preferably, the urban rail transit fire alarm device further includes:

[0022] The third housing is a hollow cuboid with one open side, located above the pull rod. The bottom of the third housing has a horizontal insertion port, and the third housing contains a heat-expanding material package.

[0023] A heat-conducting rod, one end of which is located outside the housing three, and the other end passes through the housing three and is inserted into the heat-expanding material package;

[0024] The movable plate is T-shaped and includes a horizontal part and a vertical part. The horizontal part is inserted into the socket, the upper part of the vertical part seals one side of the housing three, and the lower part is connected to the pull rod. When the heat-expanding material in the heat-expanding material package is heated and expands, the expanded heat-expanding material can push the vertical part and the pull rod to move in the same direction as the pushing direction of the pushing device.

[0025] Preferably, in the urban rail transit fire alarm device, a first limiting block and a second limiting block are respectively provided at both ends of the pull rod. The first limiting block and the second limiting block are both located outside the housing. When the pulse igniter is in the first position, the first limiting block abuts against the housing. When the pulse igniter is in the second position, the second limiting block abuts against the housing.

[0026] Preferably, in the urban rail transit fire alarm device, the signal collector includes a smoke sensor, a temperature sensor, and a light sensor.

[0027] Preferably, in the urban rail transit fire alarm device, each of the films on the side closest to the moving rod is connected to the moving rod by a rope.

[0028] Preferably, in the urban rail transit fire alarm device, the bottom of the housing two is provided with a jet pipe, the jet pipe is horn-shaped, a sound-emitting channel is opened in the inner wall of the jet pipe, and a sound-emitting protrusion is fixedly connected to the inner wall of the sound-emitting channel.

[0029] Preferably, in the urban rail transit fire alarm device, the bottom of the jet pipe is inclined and sealed with a membrane. When the pulse igniter is in the first position, the bottom of the moving rod contacts the lower part of the membrane at the bottom of the jet pipe. When the pulse igniter moves from the first position to the second position, the bottom of the moving rod cuts open the membrane at the bottom of the jet pipe. This invention has at least the following beneficial effects:

[0030] This invention, by setting up a signal acquisition device, can quickly obtain monitoring data, and then quickly move the pulse igniter through a pushing device to generate nitrogen gas, and can also quickly sound an alarm through an audible alarm.

[0031] This invention uses a smoke sensor to monitor the air around the fire alarm in real time, and uses a temperature sensor and a light sensor to monitor the temperature and flames respectively, thereby improving the accuracy of fire monitoring and alarm.

[0032] When the pushing device is unusable or a fire occurs but the alarm is not working, the present invention allows the lever to be pulled manually to move the pulse igniter and ignite the solid generator, making the use more versatile.

[0033] When the pushing device is unusable, the present invention allows the heat-conducting rod to transfer the external temperature to the heat-expanding material as the external temperature rises, causing the heat-expanding material to expand. The expanded heat-expanding material then pushes the vertical part and the pull rod to move in the same direction as the pushing direction of the pushing device, thereby causing the pulse igniter to move into the solid generator for ignition, producing nitrogen gas, which in turn sprays out the fire extinguishing dry powder. Furthermore, by setting up a jet pipe, an alarm sound can be emitted when the gas is sprayed, enabling the alarm device to function in different states.

[0034] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of an urban rail transit fire alarm device according to an embodiment of the present invention. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0037] It should be noted that in the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] like Figure 1 As shown, the present invention provides a fire alarm device for urban rail transit, comprising:

[0039] Shell 1, which is hollow inside;

[0040] The pushing device 2 is disposed inside the housing 1;

[0041] Solid generator package 3 is disposed inside the housing 1;

[0042] The pulse igniter 4 is housed within the housing 1, with a terminal block 41 on its top and a vertically mounted movable rod 5 at its bottom. One side of the movable rod 5 (e.g., Figure 1 As shown on the right side, multiple spikes 51 are spaced apart. The ignition end of the pulse igniter 4 is opposite to and a certain distance away from the solid generator pack 3. After the pulse igniter 4 moves, it can connect to the power supply 6 to generate current and ignite the solid generator, so that the solid generator, which is a mixture of sodium azide and ammonium nitrate, can produce a large amount of nitrogen gas through chemical reaction.

[0043] Power supply 6, with terminal block 2 61 at its bottom;

[0044] The second housing 7 is located below the first housing 1. A cylindrical baffle 8 is located in the middle of the second housing 7, forming a jet duct 81 that communicates with the interior of the first housing 1. The moving rod 5 is located within the jet duct 81 and is spaced a certain distance from the baffle 8. The enclosed area formed by the outer wall of the baffle 8 and the inner wall of the second housing 7 is filled with fire extinguishing dry powder 9. The baffle 8 has multiple openings spaced apart, each sealed by a thin film. Each film on the side closest to the moving rod 5 is connected to the moving rod 5, with one spike 51 corresponding to one opening. The pushing device 2 can push the pulse igniter 4 from a first position (e.g., ...). Figure 1 (As shown) Move towards the solid generator pack 3 to the second position. When the pulse igniter 4 is in the second position, terminal 41 and terminal 61 are connected. At the same time, the ignition end enters the solid generator pack 3. The moving rod 5 pulls open the films connected to it, and the piercing body 51 pierces the film at the corresponding opening.

[0045] Signal acquisition device;

[0046] Sound alarm;

[0047] The controller is connected to the signal acquisition unit, the push device 2, and the sound alarm.

[0048] The urban rail transit fire alarm device provided in this solution, when in use, obtains monitoring data through a signal acquisition device, and the controller controls the pushing device 2 to move the pulse igniter 4 from the first position toward the solid generating agent pack 3, and an alarm is triggered by an audible alarm. When the pulse igniter 4 moves to the second position, the connection between terminal 1 41 and terminal 2 61 generates current, and at the same time, the ignition end enters the solid generating agent pack 3, causing the solid generating agent to produce a large amount of nitrogen gas through a chemical reaction. The moving rod 5 pulls open the films connected to it, and the piercing body 51 pierces the film at the corresponding opening, allowing the extinguishing dry powder 9 to enter the jet duct 81 and be sprayed out through nitrogen gas, thereby achieving the purpose of suppressing the internal fire by the mixture of airflow and extinguishing dry powder 9 inside the rail transit vehicle.

[0049] In another embodiment, the urban rail transit fire alarm device further includes:

[0050] A pull rod 10, the middle part of which passes through the movable rod 5, and the two ends of which pass through the housing 1 respectively, are provided with a push block 101 on the pull rod 10. The push block 101 is located on the other side of the movable rod 5 (e.g., Figure 1 As shown on the left), when the pull rod 10 moves in the same direction as the pushing direction of the pushing device 2, the pushing block 101 can push the connecting rod to move along the moving direction of the pull rod 10 to the connection of terminal 41 and terminal 61. At the same time, the ignition end enters the solid generator pack 3, the moving rod 5 pulls open each film connected to it, and the piercing body 51 pierces the film at the corresponding opening.

[0051] When the push device 2 is unusable or a fire occurs but the alarm is not working, the lever 10 can be manually pulled to move the pulse igniter 4 and ignite the solid generator, making the usage more versatile.

[0052] In another embodiment, the urban rail transit fire alarm device further includes:

[0053] A fixing plate 11 is fixed inside the housing 1. The pull rod 10 and the pulse igniter 4 both pass through the fixing plate 11. The pull rod 10 is not fixed on the fixing plate 11. The fixing plate 11 is perpendicular to the pull rod 10.

[0054] Multiple springs are spaced apart between the fixed plate 11 and the pulse igniter 4. Each spring's two ends are connected to both the fixed plate 11 and the pulse igniter 4. When the pulse igniter 4 is in the first position, the springs are in their natural state. The springs prevent other factors from causing the pulse igniter 4 to move towards the solid generator pack 3 when the pushing device 2 or the pull rod 10 is not pushing the pulse igniter 4 towards the solid generator pack 3.

[0055] In another embodiment, the baffle 8 in the urban rail transit fire alarm device is a square tube shape.

[0056] In another embodiment, the urban rail transit fire alarm device further includes:

[0057] Shell 312, which is hollow inside, and one side (as shown) Figure 1 The right side shown is an open cuboid shape, located above the pull rod 10. The bottom of the housing 12 has a horizontal insertion port, and the housing 12 contains a heat-expanding material package.

[0058] The heat-conducting rod 13 has one end located outside the housing 3 12, and the other end passes through the housing 3 12 and is inserted into the heat-expanding material package;

[0059] The movable plate 14 is T-shaped and includes a horizontal part and a vertical part. The horizontal part is inserted into the socket, the upper part of the vertical part seals one side of the housing 12, and the lower part is connected to the pull rod 10. When the heat-expanding material in the heat-expanding material package is heated and expands, the expanded heat-expanding material can push the vertical part and the pull rod 10 to move in the same direction as the pushing direction of the pushing device 2.

[0060] When the pushing device 2 is unusable, as the ambient temperature rises, the heat-conducting rod 13 transfers the ambient temperature to the heat-expanding material, causing it to expand. The expanded material then pushes the vertical part and the pull rod 10 in the same direction as the pushing device 2, thereby causing the pulse igniter 4 to move into the solid generator for ignition, producing nitrogen gas, which in turn sprays out the extinguishing dry powder 9. This allows the alarm device to function under different conditions.

[0061] In another embodiment, in the urban rail transit fire alarm device, the two ends of the pull rod 10 are respectively provided with a first limiting block 102 and a second limiting block 103. Both the first limiting block 102 and the second limiting block 103 are located outside the housing 1. When the pulse igniter 4 is in the first position, the first limiting block 102 abuts against the housing 1; when the pulse igniter 4 is in the second position, the second limiting block 103 abuts against the housing 1. This ensures that when the pull rod 10 is pulled, the pulse igniter 4 can only move from the first position to the second position.

[0062] In another embodiment, the urban rail transit fire alarm device includes a signal acquisition unit comprising a smoke sensor, a temperature sensor, and a light sensor. The smoke sensor monitors the air around the fire alarm in real time, while the temperature and light sensors monitor temperature and flame intensity respectively, thereby improving the accuracy of fire monitoring and alarm functions.

[0063] In another embodiment, in the urban rail transit fire alarm device, each of the films on the side closest to the movable rod 5 is connected to the movable rod 5 by a rope.

[0064] In another embodiment, in the urban rail transit fire alarm device, a jet pipe 15 is provided at the bottom of the housing 7. The jet pipe 15 is horn-shaped, and a sound-emitting channel 151 is formed in the inner wall of the jet pipe 15, which is connected to the jet channel 81. A sound-emitting protrusion is fixedly connected to the inner wall of the sound-emitting channel 151. By providing the jet pipe 15, an alarm sound can be emitted when gas is ejected.

[0065] In another embodiment, in the urban rail transit fire alarm device, the bottom of the jet pipe 15 is inclined and sealed by a membrane. When the pulse igniter 4 is in the first position, the bottom of the moving rod 5 contacts the lower part of the membrane at the bottom of the jet pipe 15, and the moving rod 5 does not seal the jet pipe 15. When the pulse igniter 4 moves from the first position to the second position, the bottom of the moving rod 5 cuts open the membrane at the bottom of the jet pipe 15. Figure 1 As shown, the moving rod 5 moves from left to right, which can cut open the film at the bottom of the jet pipe 15, allowing the gas and fire extinguishing dry powder 9 to be sprayed out quickly.

[0066] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A fire alarm device for urban rail transit, characterized in that, include: Shell 1, which is hollow inside; A driving device is disposed within the housing. A solid generator package is disposed within the housing one; The pulse igniter is housed within the housing and has a terminal block at its top and a vertically mounted movable rod at its bottom. Multiple spikes are spaced apart on one side of the movable rod. The ignition end of the pulse igniter is opposite to and a certain distance away from the solid generator pack. The power supply has two terminals at its bottom. A second housing is located below the first housing. A cylindrical baffle is positioned in the middle of the second housing, forming a jet channel that communicates with the interior of the first housing. The moving rod is located within the jet channel and is spaced a certain distance from the baffle. A closed area enclosed by the outer wall of the baffle and the inner wall of the second housing is filled with fire extinguishing dry powder. Multiple openings are spaced apart on the baffle, each sealed with a thin film. The films on the side closest to the moving rod are connected to the moving rod, with one piercing corresponding to one opening. The pushing device can move the pulse igniter from a first position towards the solid propellant pack to a second position. When the pulse igniter is in the second position… When in position, terminal one and terminal two are connected, and the ignition end enters the solid initiator pack. The moving rod pulls open the films connected to it, and the piercing body pierces the film at the corresponding opening. The bottom of the housing two is provided with a jet pipe, which is horn-shaped. A sound channel is opened in the inner wall of the jet pipe, and a sound-emitting protrusion is fixedly connected to the inner wall of the sound channel. The bottom of the jet pipe is inclined and sealed by a film. When the pulse igniter is in the first position, the bottom of the moving rod contacts the lower part of the film at the bottom of the jet pipe. When the pulse igniter moves from the first position to the second position, the bottom of the moving rod cuts open the film at the bottom of the jet pipe. The signal acquisition unit includes a smoke sensor, a temperature sensor, and a light sensor; Sound alarm; The controller is connected to the signal acquisition unit, the actuator, and the audible alarm. A pull rod, the middle of which passes through the moving rod, and the two ends of which pass through the housing one respectively. A push block is provided on the pull rod. The push block is located on the other side of the moving rod. When the pull rod moves in the same direction as the pushing direction of the pushing device, the push block can push the connecting rod to move along the moving direction of the pull rod to the connection of terminal one and terminal two. At the same time, the ignition end enters the solid generator bag. The moving rod pulls open the films connected to it, and the piercing body pierces the film at the corresponding opening. A fixing plate is fixed inside the housing, and the pull rod and the pulse igniter both pass through the fixing plate. The fixing plate is perpendicular to the pull rod. Multiple springs are spaced apart between the fixed plate and the pulse igniter. The two ends of each spring are connected to the fixed plate and the pulse igniter respectively. When the pulse igniter is in the first position, the spring is in its natural state. The third housing is a hollow cuboid with one open side, located above the pull rod. The bottom of the third housing has a horizontal insertion port, and the third housing contains a heat-expanding material package. A heat-conducting rod, one end of which is located outside the housing three, and the other end passes through the housing three and is inserted into the heat-expanding material package; The movable plate is T-shaped and includes a horizontal part and a vertical part. The horizontal part is inserted into the socket, the upper part of the vertical part seals one side of the housing three, and the lower part is connected to the pull rod. When the heat-expanding material in the heat-expanding material package is heated and expands, the expanded heat-expanding material can push the vertical part and the pull rod to move in the same direction as the pushing direction of the pushing device.

2. The urban rail transit fire alarm device as described in claim 1, characterized in that, The baffle is in the shape of a square tube.

3. The urban rail transit fire alarm device as described in claim 1, characterized in that, The two ends of the pull rod are respectively provided with a first limiting block and a second limiting block. Both the first limiting block and the second limiting block are located outside the housing. When the pulse igniter is in the first position, the first limiting block abuts against the housing. When the pulse igniter is in the second position, the second limiting block abuts against the housing.

4. The urban rail transit fire alarm device as described in claim 1, characterized in that, Each film sheet on the other side of the moving pole is connected to the moving pole by a rope.

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