Integrated fire alarm detection and fire extinguishing device

Abstract

The present application provides an integrated fire detection and extinguishing apparatus, the integrated fire detection and extinguishing apparatus comprising: a fire extinguishing tube assembly comprising a tube body disposed in a cabin, the tube body containing a fire extinguishing agent therein; the sensor assembly comprises a sensor, and the sensor is arranged at the position of the pipe body and used for monitoring the temperature and pressure in the pipe body; the fire extinguishing nozzle is arranged at a preset position of the pipe main body and is used for releasing the fire extinguishing agent in the pipe main body; and the at least one control valve is arranged between the pipe main body and the corresponding fire extinguishing nozzle and is used for opening and closing a communication passage between the pipe main body and the fire extinguishing nozzle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of integrated fire alarm detection and fire extinguishing device, which can realize the detection and fire extinguishing of fire alarm.The utility model belongs to the field of aircraft fire alarm detection and fire extinguishing design BACKGROUND

[0002] Fire is one of the biggest threats to aircraft flight safety, and if it cannot be detected and effectively extinguished on the aircraft, it may lead to serious consequences. Generally, each cabin of the aircraft will be equipped with a fire / overheat detection and extinguishing system as needed to provide fire alarm and extinguishing functions for the corresponding cabin.

[0003] Currently, the fire detection system and extinguishing system configured in the cabin of the mainstream aircraft model are usually two independent systems. The detection system mainly monitors the abnormal rise of the temperature in the relevant area by arranging fire / overheat detectors in the area. When the fire detector detects an abnormal rise in temperature, the pilot starts the extinguishing system as needed to extinguish the fire. The extinguishing system delivers the extinguishing agent to the extinguishing area through the extinguishing pipeline to extinguish the fire.

[0004] The conventional extinguishing system mainly includes an extinguishing bottle, an extinguishing pipeline and an extinguishing nozzle. During extinguishing, the extinguishing agent stored in the extinguishing bottle is propelled by pressure along the extinguishing pipeline through the extinguishing nozzle to the extinguishing area, forming a certain concentration of extinguishing agent to extinguish the fire.

[0005] However, the current fire detection and extinguishing system has the following problems:

[0006] 1. The existing aircraft fire detection system uses a support pipe installation method in some areas to improve system maintainability, i.e. the fire detector is installed on the support pipe, and the support pipe is installed on the engine through a connecting piece. This design increases the weight of the detection system.

[0007] 2. In the fixed fire extinguishing system of the existing aircraft, the extinguishing bottle is connected to the extinguishing area through a long extinguishing pipeline, and the extinguishing agent stored in the extinguishing bottle needs to be delivered to the extinguishing area through the extinguishing pipeline. The extinguishing bottle is usually arranged in the fuselage or hanging area, and the extinguishing bottle and the extinguishing area are connected through a long extinguishing pipeline, which is heavy. The presence of the extinguishing pipeline increases the weight of the system on the one hand, and the extinguishing agent remaining in the extinguishing pipeline cannot participate in extinguishing, increasing the amount of extinguishing agent required for extinguishing.

[0008] 3. The fire detection and extinguishing system is two independent systems with low integration. SUMMARY

[0009] In view of the above problems of the prior art, the utility model provides an integrated fire alarm detection and extinguishing device, which is designed in an integrated manner and can realize detection of regional fire alarm / overheating and fire extinguishing, and can be applied to a region on an aircraft that needs fire alarm / overheating detection and extinguishing, such as a power device cabin of an aircraft.

[0010] In the first example of the integrated fire alarm detection and extinguishing device, the integrated fire alarm detection and extinguishing device comprises a fire extinguishing pipe assembly, the fire extinguishing pipe assembly comprising a pipe body arranged in a cabin and containing a fire extinguishing agent in the pipe body; a sensor assembly, the sensor assembly comprising a sensor arranged at the pipe body and used for monitoring the temperature and pressure in the pipe body; at least one fire extinguishing nozzle arranged at a predetermined position of the pipe body and used for releasing the fire extinguishing agent in the pipe body; and at least one control valve arranged between the pipe body and the corresponding fire extinguishing nozzle and used for opening and closing a communication passage between the pipe body and the fire extinguishing nozzle.

[0011] According to the above configuration, the temperature and pressure in the fire extinguishing pipe are monitored by the sensor, so that the detection of regional fire alarm is realized without using a dedicated fire alarm / overheating detector.

[0012] In addition, the fire extinguishing agent is stored in the fire extinguishing pipe, and the fire extinguishing nozzle is designed in an integrated manner with the fire extinguishing pipe, so that a fire extinguishing agent conveying pipeline does not need to be designed, and the system complexity and system weight are reduced.

[0013] In the second example of the integrated fire alarm detection and extinguishing device, the first example is optionally included, and the integrated fire alarm detection and extinguishing device further comprises that the pipe body also contains a pressurized gas.

[0014] According to the above configuration, the fire extinguishing agent in the fire extinguishing pipe can be conveniently sprayed out.

[0015] In the third example of the integrated fire alarm detection and extinguishing device, one or more of the first example and the second example are optionally included, and the integrated fire alarm detection and extinguishing device further comprises that the sensor is connected to a control panel, sends the temperature and pressure in the pipe body to the crew, and the control valve is connected to the control panel and receives the instruction of the crew to open and close.

[0016] According to the above configuration, the crew can know the temperature and pressure in the pipe body, and the crew is allowed to remotely control the opening and closing of the control valve.

[0017] In the fourth example of the integrated fire detection and extinguishing device, optionally including one or more of the first to third examples, the integrated fire detection and extinguishing device further includes: the sensor is connected to the control valve, and transmits the temperature and pressure in the pipe body, and the control valve selectively opens or closes the communication passage between the pipe body and the fire extinguishing nozzle based on whether the temperature and pressure in the pipe body exceed a preset threshold.

[0018] According to the above configuration, the control valve can be pre-installed with instructions to open or close based on the size relationship between the temperature and pressure in the pipe body and the preset threshold.

[0019] In the fifth example of the integrated fire detection and extinguishing device, optionally including one or more of the first to fourth examples, the integrated fire detection and extinguishing device further includes: the sensor is a temperature and pressure composite sensor.

[0020] According to the above configuration, the use of a commercially available composite sensor replaces a single temperature sensor and a single pressure sensor, achieving a reduction in the number of components and overall weight.

[0021] In the sixth example of the integrated fire detection and extinguishing device, optionally including one or more of the first to fifth examples, the integrated fire detection and extinguishing device further includes: a pressure-sensitive burst diaphragm is provided in the control valve, and the burst diaphragm ruptures when the pressure exceeds a threshold, thereby allowing the control valve to communicate the pipe body with the corresponding fire extinguishing nozzle.

[0022] According to the above configuration, the explosion of the fire extinguishing pipe can be prevented. By releasing the fire extinguishing agent when the pressure exceeds the threshold, the pressure in the fire extinguishing pipe is reduced, avoiding overpressure rupture of the fire extinguishing pipe.

[0023] In the seventh example of the integrated fire detection and extinguishing device, optionally including one or more of the first to sixth examples, the integrated fire detection and extinguishing device further includes: the fire extinguishing pipe assembly further includes a second pipe body arranged in the cabin and physically isolated from the pipe body, and the fire extinguishing agent is arranged in the second pipe body; the sensor assembly further includes a second sensor arranged at the second pipe body for monitoring the temperature and pressure in the second pipe body; at least one fire extinguishing nozzle is arranged at a predetermined position between the pipe body and the second pipe body for releasing the fire extinguishing agent in both the pipe body and the second pipe body; and at least one control valve is further arranged between the second pipe body and the corresponding fire extinguishing nozzle, and is further used to selectively open or close the communication passage between the second pipe body and the fire extinguishing nozzle.

[0024] According to the above configuration, the two pipes are physically isolated from each other, enabling dual detection, providing two opportunities for fire extinguishing, and achieving safety redundancy.

[0025] In an eighth example of the integrated fire detection and extinguishing device, optionally including one or more of the first example through the seventh example, the integrated fire detection and extinguishing device further includes: a second pipe body arranged in parallel to the pipe body.

[0026] In a ninth example of the integrated fire detection and extinguishing device, optionally including one or more of the first example through the eighth example, the integrated fire detection and extinguishing device further includes: the fire extinguishing nozzle has a T-shaped valve body and a blocking ball contained in the T-shaped valve body, wherein the T-shaped valve body includes one outlet end and two inlet ends, at least one injection port is provided at the outlet end, the two inlet ends are connected to the pipe body and the second pipe body via corresponding control valves respectively, and wherein the blocking ball can block one of the inlet ends when the other one of the inlet ends is communicated.

[0027] According to the above configuration, the two groups of fire extinguishing pipelines share the fire extinguishing nozzle, and the number of parts is reduced.

[0028] The integrated fire detection and extinguishing device integrates the functions of detection and fire extinguishing, and reduces the system complexity.

[0029] The temperature and pressure in the fire extinguishing pipeline are monitored by the sensor to realize the monitoring of the regional fire, without using a dedicated fire / overheating detector, without designing a dedicated fire / overheating detector support pipe, and the number of system components is reduced.

[0030] The fire extinguishing agent is stored in the fire extinguishing pipeline, the fire extinguishing nozzle is designed in an integrated manner with the fire extinguishing pipeline, without designing a fire extinguishing agent conveying pipeline, and the system complexity and weight are reduced. The fire extinguishing nozzle can be arranged in a high-risk fire area, improving the fire extinguishing efficiency and reducing the demand for fire extinguishing agents.

[0031] In addition, the double-pipeline design can provide double-detection capability for fire / overheating detection, improve the anti-false alarm capability of the system, and provide two fire extinguishing opportunities for the fire extinguishing area, improving the reliability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to describe the embodiments of the above and other features of the present application, a more detailed description of the present application briefly described above will be presented with reference to exemplary embodiments of the present application illustrated in the accompanying drawings. It can be understood that these drawings only depict various exemplary embodiments of the present application and should not be considered as limiting the scope thereof, and the present application will be described and explained by using the drawings and utilizing additional features and details. In the drawings:

[0033] Figure 1 is a perspective view of an integrated fire detection and extinguishing device according to an embodiment of the present application;

[0034] Figure 2 isFigure 1 A three-dimensional view of the fire extinguishing nozzle of an integrated fire detection and extinguishing device.

[0035] The accompanying drawings are drawn roughly to scale; however, the dimensions in the drawings are merely schematic and do not need to be strictly to scale, but are intended to make the illustration clearer. Other relative dimensions may be used in other embodiments. Throughout this and all subsequent descriptions, the same features appearing in different drawings are indicated by the same or similar reference numerals.

[0036] List of reference numerals in the attached diagram:

[0037] 1 Integrated fire detection and extinguishing device

[0038] 10 Fire Extinguishing Pipe Assembly

[0039] 11 Pipe main body

[0040] 12 Second tube main body

[0041] 20 Sensor Components

[0042] 21 Sensors

[0043] 22 Second Sensor

[0044] 30 Fire Extinguishing Nozzles

[0045] 31 T-type valve body

[0046] 31a Export end

[0047] 31b Entry point

[0048] 32 Blocking Balls

[0049] 33 Injection nozzle

[0050] 40 Control valve Detailed Implementation

[0051] First, this utility model mainly relates to fire detection and extinguishing systems. In particular, this utility model relates to fire detection and extinguishing systems for aircraft cabins, such as fire detection and extinguishing systems for aircraft power plant compartments.

[0052] The directional terms used herein, such as “top,” “bottom,” “upper,” “lower,” “inner,” “inward,” “outer,” and “outward,” are used to assist in describing the orientation of the present invention according to the embodiments shown in the figures. Unless otherwise stated, such as “horizontal direction,” “gravity direction,” etc., the directional terms are not absolute up, down, horizontal, vertical, etc., and should not be construed as limiting the present invention to any particular direction.

[0053] As used herein, the term "axial" and variants thereof refer to a direction extending generally along an axis of symmetry, a central axis, a rotational axis, or an elongate direction of a particular component or system. For example, an axially extending feature of a component can be a feature extending generally in a direction parallel to an axis of symmetry or elongate direction of the component. Further, for example, axially aligned components can be configured such that their rotational axes are aligned. Similarly, as used herein, the term "radial" and variants thereof refer to a direction generally perpendicular to a corresponding axial direction. For example, a radially extending structure of a component can extend generally at least partially in a direction perpendicular to a longitudinal or central axis of the component.

[0054] As used herein, the terms "comprises", "comprising", "includes", "including" and the like are to be construed as being inclusive (i.e., open ended) and not exclusive (i.e., closed or restrictive), unless explicitly indicated otherwise.

[0055] In the present utility model, unless explicitly stated to the contrary, the terms "first", "second" and the like are not intended to denote any order, position, number or difference in importance, but are merely used as labels for distinguishing different positions, components, and are used for distinguishing one element, component, region and / or position from another element, component, region and / or position.

[0056] The integrated fire detection and extinguishing device 1 of the present utility model generally comprises a fire extinguishing pipe assembly 10, a sensor assembly 20, at least one fire extinguishing nozzle 30, and at least one control valve 40.

[0057] In the present utility model, different embodiments will be provided for the integrated fire detection and extinguishing device 1 with the above structure. The following will be described with reference to Figure 1 、 Figure 2 The integrated fire detection and extinguishing device 1 is schematically illustrated.

[0058] Embodiment 1

[0059] In an embodiment of the present utility model, the fire extinguishing pipe assembly 10 of the integrated fire detection and extinguishing device 1 comprises a pipe body 11, which is arranged in the cabin and contains fire extinguishing agent in the pipe body 11.

[0060] Preferably, a pressurized gas is also contained in the pipe body 11, i.e. the fire extinguishing agent can be stored together with a pressurized gas, such as a pressurized inert gas, in the pipe body 11, facilitating the release of the fire extinguishing agent.

[0061] In this embodiment, the sensor assembly 20 comprises a sensor 21, which can be provided at the pipe body 11 for monitoring the temperature and pressure within the pipe body 11. After the integrated fire detection and extinguishing device 1 is installed in the fire extinguishing area of the cabin, the sensor continuously detects the pressure and temperature in the fire extinguishing pipe.

[0062] Preferably, the sensor 21 can be a temperature and pressure compound sensor, but is not limited thereto, and can also be two sensors for monitoring temperature and pressure respectively.

[0063] The integrated fire detection and extinguishing device 1 detects the fire / overheating state of the region mainly by the temperature and pressure change of the extinguishing agent stored in the pipe body 11. Therefore, the sensor 21 can be arranged at one end of the pipe body 11 in the axial direction or on the pipe wall of the pipe body 11 in the radial direction.

[0064] In this embodiment, at least one extinguishing nozzle 30 is arranged at a predetermined position of the pipe body 11 for releasing the extinguishing agent in the pipe body 11 to achieve the extinguishing of the fire.

[0065] In this embodiment, at least one control valve 40 is arranged between the pipe body 11 and the corresponding extinguishing nozzle 30 for opening and closing the communication passage between the pipe body 11 and the extinguishing nozzle 30. The combination of the extinguishing nozzle 30 and the control valve 40 connected to the pipe body 11 can be increased or decreased according to the needs of the cabin fire extinguishing.

[0066] Preferably, a pressure sensitive element such as a pressure sensitive rupture disc is arranged in the control valve 40, which ruptures when the pressure exceeds a threshold value, thereby allowing the control valve 40 to communicate the pipe body 11 and the corresponding extinguishing nozzle 30, reducing the pressure in the extinguishing pipe to avoid overpressure rupture of the extinguishing pipe.

[0067] The temperature of the environment where the pipe body 11 is located and the pressure vs temperature change curve in the pipe body 11 can be established in advance by experiment. When the pressure in the pipe body 11 increases, the pressure and temperature data at this time are compared with the above-mentioned pressure vs temperature change curve to determine whether the region is overheated or on fire.

[0068] Preferably, the sensor 21 is connected to the control panel to send the temperature and pressure in the pipe body 11 to the crew. And the control valve 40 is also connected to the control panel to receive the crew's instructions to open and close. The crew can remotely open the control valve 40 to communicate the pipe body 11 and the extinguishing nozzle 30 to release the extinguishing agent and achieve the extinguishing of the region.

[0069] Alternatively, the sensor 21 is connected to the control valve 40 and sends the temperature and pressure in the pipe body 11, and the control valve 40 selectively opens and closes the communication passage between the pipe body 11 and the extinguishing nozzle 30 based on whether the temperature and pressure in the pipe body 11 are preset threshold values.

[0070] When the pressure in the fire extinguishing pipe decreases, the pressure and temperature data at this time are compared with the pressure vs temperature change curve to determine whether the integrated fire alarm detection and extinguishing device 1 is malfunctioning. If it is determined that the device is malfunctioning, a malfunction signal is sent out.

[0071] Embodiment 2

[0072] In Embodiment 1, the pipe assembly 10 of the integrated fire alarm detection and extinguishing device 1 includes only a single pipe body 11. However, the integrated fire alarm detection and extinguishing device 1 of the present application is not limited to this, and can include two or more pipe bodies.

[0073] In this embodiment, the fire extinguishing pipe assembly 10 includes a pipe body 11 and a second pipe body 12. The pipe body 11 and the second pipe body 12 are arranged in a cabin and the second pipe body 12 is physically isolated from the pipe body 11. Fire extinguishing agent is arranged in both the pipe body 11 and the second pipe body 12.

[0074] Preferably, the second pipe body 12 can be arranged parallel to the pipe body 11.

[0075] In this embodiment, the sensor assembly 20 includes a sensor 21 arranged at the pipe body 11 for monitoring the temperature and pressure in the pipe body 11, and a second sensor 22 arranged at the second pipe body 12 for monitoring the temperature and pressure in the second pipe body 12.

[0076] At least one fire extinguishing nozzle 30 is arranged at a predetermined position between the pipe body 11 and the second pipe body 12 for releasing the fire extinguishing agent in both the pipe body 11 and the second pipe body 12; and

[0077] At least one control valve 40 is arranged between the pipe body 11 and the second pipe body 12 and the corresponding fire extinguishing nozzle 30, in a clamping form as shown, for selectively opening and closing the communication passage between the pipe body 11 and the fire extinguishing nozzle 30 and between the second pipe body 12 and the fire extinguishing nozzle 30.

[0078] The fire extinguishing agent and optional pressurized gas in the two pipe bodies are physically isolated from each other, and in combination with the corresponding temperature and pressure sensors, can provide a dual detection capability for fire alarm / overheating detection.

[0079] Preferably, as shown in Figure 2 The fire extinguishing nozzle 30 has a T-shaped valve body 31 in a substantially T shape and a blocking ball 32 accommodated in the T-shaped valve body 31.

[0080] The T-shaped valve body 31 of the fire extinguishing nozzle 30 includes an outlet end 31a and two inlet ends 31b, the outlet end 31a is provided with at least one jet port 33, the two inlet ends 31b are connected to the pipe body 11 and the second pipe body 12 via corresponding control valves 40 respectively, and

[0081] The blocking ball 32 of the fire extinguishing nozzle 30 is designed to block one of the inlet ends 31b when the other one is communicated. When the fire extinguishing agent in any one of the pipe bodies in the fire extinguishing pipe assembly 10 is expanded by heat and enters the T-shaped valve body 31 under the action of gas pressure, the blocking ball 32 can be pushed to block the communication passage between the other side pipe body and the fire extinguishing nozzle 30, preventing the fire extinguishing agent from entering the other side pipe body. Subsequently, the fire extinguishing agent is sprayed into the fire extinguishing area through the jet port 33 of the fire extinguishing nozzle 30 to achieve fire extinguishing.

[0082] The integrated fire alarm detection and fire extinguishing device 1 according to the present application can provide two fire extinguishing opportunities for the fire extinguishing area in the cabin due to the fire extinguishing nozzle 30 with the T-shaped valve body 31. For example, when the fire extinguishing agent in one side pipe body is released, the fire alarm / overheating detection signal still does not disappear within a certain time, the corresponding control valve of the other side pipe body can be controlled to open, and the fire extinguishing agent in the other side pipe body is released through the fire extinguishing nozzle to achieve the second fire extinguishing of the area.

[0083] The above, in order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme of the utility model has been clearly and completely described in combination with the specific embodiment and the drawing of the utility model.

[0084] Although various embodiments have been described above, it should be understood that the described embodiments are part of the embodiments of the utility model, not all the embodiments, and they are presented in the form of examples rather than limitation. It is obvious to those skilled in the art that the disclosed subject matter can be implemented in other specific forms without departing from its spirit and essential characteristics.

Claims

1. An integrated fire detection and extinguishing device, characterized in that, The integrated fire detection and extinguishing device (1) includes: Fire extinguishing pipe assembly (10), the fire extinguishing pipe assembly (10) includes a pipe body (11), the pipe body (11) is arranged in a compartment, and the pipe body (11) contains fire extinguishing agent; The sensor assembly (20) includes a sensor (21) disposed at the tube body (11) for monitoring the temperature and pressure inside the tube body (11); At least one fire extinguishing nozzle (30) is disposed at a predetermined position on the pipe body (11) for releasing fire extinguishing agent in the pipe body (11); and At least one control valve (40) is provided between the pipe body (11) and the corresponding fire extinguishing nozzle (30) for opening and closing the communication passage between the pipe body (11) and the fire extinguishing nozzle (30).

2. The integrated fire detection and extinguishing device according to claim 1, characterized in that, The tube body (11) also contains pressurized gas.

3. The integrated fire detection and extinguishing device according to claim 1, characterized in that, The sensor (21) is connected to the control panel and sends the temperature and pressure of the pipe body (11) to the unit. The control valve (40) is connected to the control panel and receives instructions from the unit to open or close.

4. The integrated fire detection and extinguishing device according to claim 1, characterized in that, The sensor (21) is connected to the control valve (40) and sends the temperature and pressure in the pipe body (11). The control valve (40) selectively opens or closes the communication passage between the pipe body (11) and the fire extinguishing nozzle (30) based on whether the temperature and pressure in the pipe body (11) exceed a preset threshold.

5. The integrated fire detection and extinguishing device according to claim 1, characterized in that, The sensor (21) is a temperature-pressure composite sensor.

6. The integrated fire detection and extinguishing device according to claim 1, characterized in that, The control valve (40) is equipped with a pressure-sensitive rupture diaphragm that ruptures when the pressure exceeds a threshold, thereby allowing the control valve (40) to connect the pipe body (11) with the corresponding fire extinguishing nozzle (30).

7. The integrated fire detection and extinguishing device according to claim 1, characterized in that, The fire extinguishing pipe assembly (10) also includes a second pipe body (12), which is arranged in the compartment and is physically isolated from the pipe body (11), and fire extinguishing agent is arranged in the second pipe body (12). The sensor assembly (20) further includes a second sensor (22), which is disposed at the second tube body (12) and is used to monitor the temperature and pressure inside the second tube body (12); At least one of the fire extinguishing nozzles (30) is disposed at a predetermined position between the pipe body (11) and the second pipe body (12) for releasing the fire extinguishing agent in both the pipe body (11) and the second pipe body (12); as well as At least one of the control valves (40) is also disposed between the second pipe body (12) and the corresponding fire extinguishing nozzle (30), and is also used to selectively open or close the communication passage between the second pipe body (12) and the fire extinguishing nozzle (30).

8. The integrated fire detection and extinguishing device according to claim 7, characterized in that, The second tube body (12) is arranged parallel to the tube body (11).

9. The integrated fire detection and extinguishing device according to claim 7, characterized in that, The fire extinguishing nozzle (30) has a T-shaped valve body (31) and a blocking ball (32) housed in the T-shaped valve body (31). The T-valve body (31) includes an outlet end (31a) and two inlet ends (31b). The outlet end (31a) has at least one injection port (33). The two inlet ends (31b) are respectively connected to the pipe body (11) and the second pipe body (12) via corresponding control valves (40). The blocking ball (32) is capable of blocking the other inlet end (31b) when one of the inlet ends (31b) is connected.

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