Active pipe network fire extinguishing system

Abstract

The utility model discloses an active pipe network fire extinguishing system, and relates to the field of fire extinguishing systems. A single superfine dry powder fire extinguishing device is mainly adopted as a cable trench fire extinguishing measure, and the device does not have an active fire detection capability and cannot timely and quickly extinguish fire in real time in the actual application process of a cable trench, so that relatively large fire loss is easily caused. The system comprises a fire extinguishing device, a temperature sensing optical fiber host, a distributed temperature sensing optical fiber, a fire alarm host and a fire extinguishing controller, the distributed temperature sensing optical fiber is connected with the temperature sensing optical fiber host, the temperature sensing optical fiber host is connected with the fire alarm host, the fire alarm host is connected with the fire extinguishing controller, and the fire extinguishing controller is connected with the fire extinguishing device. The fire extinguishing device is connected with the fire extinguishing pipe network. The system integrates active fire detection, automatic alarm and automatic control fire extinguishing devices, and can effectively perform detection at the initial stage of the fire and quickly convey a fire extinguishing agent to the fire position in real time to extinguish the fire.

Description

Technical Field

[0001] The utility model relates to the field of fire extinguishing systems, in particular to an active pipe network fire extinguishing system. Background Art

[0002] At present, the fire risk in cable trenches and other relatively confined spaces in substations is relatively high, and fire safety hazards still exist. At the same time, there is a lack of convenient and effective solutions with controllable costs, easy installation, strong guarantees, and efficient maintenance.

[0003] At present, the main fire extinguishing measures for cable trenches include water spray, aerosol, and ultrafine dry powder. Among these three fire extinguishing measures, ultrafine dry powder is the main one. In the actual application of cable trenches, a single ultrafine dry powder does not have the ability to actively detect fires, and cannot carry out targeted real-time fire extinguishing in a timely and rapid manner, which easily leads to greater fire losses. Utility Model Content

[0004] The technical problem to be solved and the technical task proposed by the utility model are to improve and perfect the existing technical solutions, and provide an active pipe network fire extinguishing system for the purpose of timely detection and real-time fire extinguishing when the fire starts. To this end, the utility model adopts the following technical solutions.

[0005] An active pipe network fire extinguishing system includes an active fire detection device, a control device and a fire extinguishing device. The active fire detection device includes a temperature-sensitive optical fiber host and a distributed temperature-sensitive optical fiber. The control device includes a fire alarm host and a fire extinguishing controller. The distributed temperature-sensitive optical fiber is connected to the temperature-sensitive optical fiber host, the temperature-sensitive optical fiber host is connected to the fire alarm host, the fire alarm host is connected to the fire extinguishing controller, the fire extinguishing controller is connected to the fire extinguishing device, and the fire extinguishing device is connected to the fire extinguishing pipe network. The system integrates multiple key links such as active fire detection, automatic alarm and automatic control of fire extinguishing devices for fire extinguishing. The fire extinguishing device can quickly transport the fire extinguishing agent to the fire location, can effectively detect and extinguish the fire in real time at the initial stage of the fire, thereby greatly reducing the losses caused by the fire.

[0006] As a preferred technical means: the distributed temperature-sensing optical fiber is horizontally laid on the protected object in a sinusoidal waveform, and after reaching the end of the protected object, it is arranged in the opposite direction, and finally crosses to form an "∞" shape, and the head and end of the distributed temperature-sensing optical fiber are connected to the two input ports of the temperature-sensing optical fiber host. Since the optical fiber is laid in a sinusoidal waveform, it can cover a larger area and has a high laying density, and multiple measuring points within the distribution range along the line can be monitored in real time. The high density of measuring point arrangement makes the detection more sensitive.

[0007] As a preferred technical means: the fire extinguishing pipe network is laid above one side of the protected object, and the fire extinguishing pipe network has nozzles every 1 to 3 meters, and the nozzles of the fire extinguishing pipes face the protected object. When extinguishing a fire, it can ensure that the fire extinguishing agent can be evenly sprayed in a fully submerged form to cover the entire surface of the protected object.

[0008] As a preferred technical means: the diameter of the nozzle gradually increases from the proximal end of the fire extinguishing pipe network connected to the fire extinguishing controller to the distal end. The nozzle diameter gradually increases from the proximal end to the distal end of the fire extinguishing pipe network, which can ensure that the fire extinguishing agent flows more smoothly in the pipe network, and can still maintain sufficient pressure and flow when reaching the distal end.

[0009] As a preferred technical means: the angle between the axis of the nozzle and the vertical normal plane of the pipe of the fire extinguishing network is in the range of 45° to 70°, which ensures that the fire extinguishing agent can be sprayed more accurately to the area where the fire occurs, improves the fire extinguishing efficiency, and effectively curbs the spread of the fire.

[0010] As a preferred technical means: the fire extinguishing controller adopts a dual-channel controller, the fire extinguishing device is a dual-channel fire extinguishing device, the fire extinguishing device is connected to the fire extinguishing pipe network of two fire partitions through two fire extinguishing output ports, and the distributed temperature sensing optical fiber is laid in two groups in two fire partitions. Through one fire extinguishing device, two sets of fire extinguishing control circuits can be realized, which can effectively reduce costs and realize independent active fire extinguishing control of different fire partitions.

[0011] As a preferred technical means: the fire alarm host is connected to the host computer via wired / wireless means to provide fire information. The location of the fire and other information can be uploaded to the host computer in real time, which is convenient for management personnel to remotely monitor in real time.

[0012] As a preferred technical means: the fire extinguishing device is provided with two output pipes, the two output pipes are respectively connected to the fire extinguishing pipe network of two fire partitions, and each of the two output pipes is connected to a trigger feedback device, and the two trigger feedback devices are connected to the fire extinguishing controller. The on-off information of the fire extinguishing agent output can be fed back to the fire extinguishing controller in real time, and the fire extinguishing controller feeds back the information to the fire alarm host, and the fire alarm host transmits the information to the upper computer.

[0013] As a preferred technical means: Both trigger feedback devices are equipped with a self-locking mechanism to lock the feedback signal after being turned on by the pressure in the pipeline. After the fire extinguishing agent output is turned on, the feedback signal is in a locked state and can continuously transmit the feedback signal to the fire alarm host.

[0014] Beneficial effects: It can effectively realize active detection, automatic alarm and automatic control of fire extinguishing. The fire extinguishing device can quickly transport the fire extinguishing agent to the fire location, and can effectively detect and extinguish the fire in real time at the initial stage, thereby greatly reducing the losses caused by the fire. It realizes independent fire risk warning and control of two partitions, and automatically sprays fire extinguishing through the nozzles of the fire protection pipe network, realizing independent active fire extinguishing control for two different fire protection partitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the system structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the nozzle positions in the cross section of the fire extinguishing pipe network in the utility model.

[0017] In the figure: 1. Temperature sensing optical fiber host; 2. Distributed temperature sensing optical fiber; 3. Fire alarm host; 4. Fire extinguishing controller; 5. Fire extinguishing device; 6. Fire extinguishing pipe network; 7. Host computer; 501. Output pipe; 502. Trigger feedback device; 601. Nozzle. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings of the specification.

[0019] like Figure 1 As shown, an active pipe network fire extinguishing system includes an active fire detection device, a control device and a fire extinguishing device 5. The active fire detection device includes a temperature-sensing optical fiber host 1 and a distributed temperature-sensing optical fiber 2. The control device includes a fire alarm host 3 and a fire extinguishing controller 4. The distributed temperature-sensing optical fiber 2 is laid on the protected object. The distributed temperature-sensing optical fiber 2 is connected to the temperature-sensing optical fiber host 1, and the temperature-sensing optical fiber host 1 is connected to the fire alarm host 3. The fire alarm host 3 is connected to the host computer 7 by wireless to provide fire information. The fire alarm host 3 is connected to the fire extinguishing controller 4, the fire extinguishing controller 4 is connected to the fire extinguishing device 5, and the fire extinguishing device 5 is connected to the fire extinguishing pipe network 6.

[0020] In order to make fire detection more sensitive, the distributed temperature-sensing optical fiber 2 is horizontally laid on the protected object in a sinusoidal waveform. After reaching the end of the protected object, it is arranged in the opposite direction and finally crosses to form an "∞" shape. The head and the end of the distributed temperature-sensing optical fiber 2 are connected to the two input ports of the temperature-sensing optical fiber host 1. Since the optical fiber is laid in a sinusoidal waveform, it can cover a larger area and has a high laying density. It can monitor multiple measuring points within the distribution range along the line in real time. The high density of measuring point arrangement makes the detection more sensitive.

[0021] In order to ensure that the fire extinguishing agent can be evenly sprayed onto the protected object, Figure 2As shown, the fire extinguishing pipe network 6 is laid above one side of the protected object, and the fire extinguishing pipe network 6 has a nozzle 601 every 2 meters, the nozzle 601 of the fire extinguishing pipe faces the protected object, and the angle A between the axis of the nozzle 601 and the vertical normal plane of the pipe of the fire extinguishing pipe network 6 is 50°. In this example, the fire extinguishing pipe network 6 can be laid for targeted covering spraying according to the range of the protected object, and it can ensure that the fire extinguishing agent can be evenly sprayed onto the protected object in the form of full flooding during fire extinguishing, covering the entire surface of the protected object.

[0022] In order to ensure that the fire extinguishing agent still maintains sufficient pressure and flow when reaching the far end, the diameter of the nozzle 601 gradually increases from the proximal end of the fire extinguishing pipe network 6 connected to the fire extinguishing controller 4 to the far end. The diameter of the nozzle 601 gradually increases from the proximal end to the far end of the fire extinguishing pipe network 6, which can ensure that the fire extinguishing agent flows more smoothly in the pipe network, and can still maintain sufficient pressure and flow when reaching the far end.

[0023] In order to reduce costs, the fire extinguishing controller 4 adopts a dual-channel controller, and the fire extinguishing device 5 is a dual-channel fire extinguishing device 5. The fire extinguishing device 5 is connected to the fire extinguishing pipe network 6 of the two fire partitions through two fire extinguishing output ports, and a total of two groups of distributed temperature sensing optical fibers 2 are laid in the two fire partitions. Through one fire extinguishing device 5, two sets of fire extinguishing control circuits can be realized, which can effectively reduce costs and realize independent active fire extinguishing control of different fire partitions.

[0024] In order to feedback the on / off information of the fire extinguishing agent output, the fire extinguishing device 5 is provided with two output pipes 501, the two output pipes 501 are respectively connected to the fire extinguishing pipe network 6 of the two fire partitions, and the two output pipes 501 are respectively connected to a trigger feedback device 502, and the two trigger feedback devices 502 are connected to the fire extinguishing controller 4. The on / off information of the fire extinguishing agent output can be fed back to the fire extinguishing controller 4 in real time, and the fire extinguishing controller 4 feeds back the information to the fire alarm host 3, and the fire alarm host 3 transmits the information to the host computer 7.

[0025] In order to continuously transmit the feedback signal to the fire alarm host 3, the two trigger feedback devices 502 are both provided with a self-locking mechanism to lock the feedback signal after being turned on by the pressure in the pipeline. After the fire extinguishing agent output is turned on, the feedback signal is in a locked state, and the feedback signal can be continuously transmitted to the fire alarm host 3.

[0026] When a fire occurs, the fire alarm host 3 will immediately analyze and process the signal received from the temperature-sensitive optical fiber host 1. When only one section of the distributed temperature-sensitive optical fiber 2 alarms, the fire alarm host 3 will only alarm and will not start the fire extinguishing device 5. When two different sections of the distributed temperature-sensitive optical fiber 2 alarm, the fire alarm host 3 will send an alarm signal and at the same time send a signal to start the fire extinguishing device to the fire extinguishing controller 4. After the fire extinguishing controller 4 receives the fire alarm signal, it will start the corresponding one of the fire extinguishing device 5 to output the fire extinguishing agent. The fire extinguishing agent is output through the corresponding output pipe 501 to the fire extinguishing pipe network 6 of the fire compartment where the fire occurred for spraying and extinguishing. In addition, the fire alarm host 3 will transmit the location of the fire and the on / off conduction of the fire extinguishing agent output to the host computer 7 in real time for real-time monitoring.

[0027] The system integrates multiple key links such as active fire detection, automatic alarm and automatic control of fire extinguishing device 5 for fire extinguishing. The fire extinguishing device 5 can quickly deliver the fire extinguishing agent to the fire location, and can effectively detect and extinguish the fire in real time at the initial stage of the fire, thereby greatly reducing the losses caused by the fire.

[0028] above Figure 1-2 The active pipe network fire extinguishing system shown is a specific embodiment of the utility model, which has embodied the substantial characteristics and progress of the utility model. According to actual use needs and under the inspiration of the utility model, equivalent modifications in shape, structure, etc. can be made to it, which are all within the protection scope of this scheme.

Claims

1. An active pipe network fire extinguishing system, characterized in that: The invention comprises an active fire detection device, a control device and a fire extinguishing device (5), wherein the active fire detection device comprises a temperature sensing optical fiber host (1) and a distributed temperature sensing optical fiber (2), the control device comprises a fire alarm host (3) and a fire extinguishing controller (4), the distributed temperature sensing optical fiber (2) is connected to the temperature sensing optical fiber host (1), the temperature sensing optical fiber host (1) is connected to the fire alarm host (3), the fire alarm host (3) is connected to the fire extinguishing controller (4), the fire extinguishing controller (4) is connected to the fire extinguishing device (5), and the fire extinguishing device (5) is connected to the fire extinguishing pipe network (6); The distributed temperature-sensing optical fiber (2) is horizontally laid on the protected object in a sinusoidal waveform, and after reaching the end of the protected object, it is arranged in the reverse direction, and finally crosses to form an "∞" shape. The head and the end of the distributed temperature-sensing optical fiber (2) are connected to the two input ports of the temperature-sensing optical fiber host (1).

2. An active pipe network fire extinguishing system according to claim 1, characterized in that: The fire extinguishing pipe network (6) is laid above one side of the protected object, and the fire extinguishing pipe network (6) is provided with nozzles (601) at intervals of 1 to 3 meters, with the nozzles (601) of the fire extinguishing pipes facing the protected object.

3. An active pipe network fire extinguishing system according to claim 2, characterized in that: The diameter of the nozzle (601) gradually increases from the proximal end of the fire extinguishing pipe network (6) connected to the fire extinguishing controller (4) to the distal end.

4. An active pipe network fire extinguishing system according to claim 3, characterized in that: The included angle between the axis of the nozzle (601) and the vertical normal plane of the pipe of the fire extinguishing pipe network (6) is in the range of 45° to 70°.

5. An active pipe network fire extinguishing system according to claim 4, characterized in that: The fire extinguishing controller (4) is a dual-channel controller, the fire extinguishing device (5) is a dual-channel fire extinguishing device (5), the fire extinguishing device (5) is connected to the fire extinguishing pipe network (6) of two fire partitions through two fire extinguishing output ports, and the distributed temperature sensing optical fiber (2) is laid in two groups in the two fire partitions.

6. An active pipe network fire extinguishing system according to claim 5, characterized in that: The fire alarm host (3) is connected to the host computer (7) via wired / wireless means to provide fire information.

7. An active pipe network fire extinguishing system according to claim 6, characterized in that: The fire extinguishing device (5) is provided with two output pipes (501), the two output pipes (501) are respectively connected to the fire extinguishing pipe networks (6) of the two fire partitions, and the two output pipes (501) are respectively connected to a trigger feedback device (502), and the two trigger feedback devices (502) are connected to the fire extinguishing controller (4).

8. An active pipe network fire extinguishing system according to claim 7, characterized in that: The two trigger feedback devices (502) are both provided with a self-locking mechanism for locking the feedback signal after being opened by the pressure in the pipeline.

Images