Fire accident fan control system and gas fire extinguishing control system
By introducing or non-gate components into the gas fire extinguishing control system for logical judgment, the start and stop of the accident fan is automatically controlled, which solves the problem that gas fire extinguishing substances cannot be discharged in time and automatically in the prior art, and effectively protects important electronic equipment.
Patent Information
- Application Number
- CN202420584475.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The gas fire extinguishing control system for the existing important equipment rooms is seriously used to open the fan valve after the fire extinguishing method, resulting in the inability to discharge gas fire extinguishing substances automatically in time and staying for a long time has an adverse impact on important electronic equipment.
A fire accident fan control system is designed to make logical judgments on the alarm output ends of the fire identification camera and fire detector by introducing or non-gate components. The gas fire extinguishing host automatically controls the start and stop of the accident fan based on the logical judgment results to ensure that the gas fire extinguishing substance after the fire is extinguished is discharged in a timely manner.
The timely and automatic discharge of gas fire extinguishing substances is achieved, which shortens the residence time of gas fire extinguishing substances and avoids the loss of important electronic equipment caused by long-term stays.
Smart Images
Figure CN222585439U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire safety, in particular to a fire accident fan control system and a gas fire extinguishing control system. Background Art
[0002] At present, in intelligent building and electrical design, the design scheme and products of gas fire extinguishing alarm system generally only have manual opening of post-event fan exhaust. For the gas fire extinguishing control system of important equipment rooms, the conventional design and practice connects the alarm signal to the fire linkage alarm host in the duty room through the corresponding gas fire extinguishing control host to alarm. When the temperature and smoke sensors in the gas fire extinguishing room detect the fire, the gas fire extinguishing host controls the closing of the fan valve in the protection area, and opens the gas fire extinguishing system device to extinguish the fire. After the fire is extinguished, the fan valve is manually opened to exhaust the accident and discharge the gas fire extinguishing material. This scheme relies heavily on manual post-event exhaust and gas fire extinguishing materials. For example, in the gas fire extinguishing control system installed in important computer rooms, high and low voltage distribution rooms, and archives rooms, the gas fire extinguishing materials cannot be automatically discharged in time, and long-term retention will have an adverse effect on important electronic equipment such as precision air conditioners and servers. Utility Model Content
[0003] The purpose of the utility model is to provide a fire accident fan control system and a gas fire extinguishing control system to address the problem that the existing gas fire extinguishing control system for important equipment rooms seriously relies on manual opening of the fan valve after fire extinguishing, resulting in the failure of gas fire extinguishing materials to be automatically discharged in time.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A fire accident fan control system, characterized in that it comprises a fire detector (3), a gas fire extinguishing control host (2), an accident fan (4) ， A fire identification camera (1), an NOR gate component (5), and an input module (6); the alarm output ends of the fire detector (3) and the fire identification camera (1) are communicatively connected to the input end of the NOR gate component (5), the output end of the NOR gate component (5) is communicatively connected to the input end of the input module (6), the output end of the input module (6) is communicatively connected to a gas fire extinguishing control host (2), and the gas fire extinguishing control host (2) is communicatively connected to an emergency fan (4).
[0006] As a preferred solution of the utility model, all components in the system are connected by flame-retardant and fire-resistant control cables.
[0007] As a preferred solution of the utility model, the fire detector (3) comprises a temperature detector and a smoke detector.
[0008] As a preferred solution of the utility model, the NOR gate component (5) is used to perform a logic operation on the outputs of the alarm output terminals of the fire detector (3) and the fire identification camera (1), and input the logic operation results into the input module (6).
[0009] As a preferred solution of the utility model, the input module (6) is used to convert the logic operation result into a bus signal and input it into the gas fire extinguishing control host.
[0010] A gas fire extinguishing control system comprises the above-mentioned fire accident fan control system, and also comprises a steel cylinder solenoid valve (7) and a fire protection net (8), wherein the steel cylinder solenoid valve (7) and the fire protection net (8) are both communicatively connected to a gas fire extinguishing host (2).
[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0012] The utility model proposes a fire accident fan control system and a gas fire extinguishing control system. The fire accident fan control system is based on the existing gas fire extinguishing control system. By introducing NOR gate components, the switch quantities output by the alarm output terminals of the fire identification camera and the fire detector are subjected to NOR logic judgment. The gas fire extinguishing host automatically controls the start and stop of the accident fan according to the logic judgment result, so that the gas fire extinguishing material after the fire is extinguished can be discharged in time, the residence time of the gas fire extinguishing material can be effectively shortened, and the loss of important electronic equipment caused by the long residence time of the gas fire extinguishing material can be avoided.
[0013] The utility model also proposes a gas fire extinguishing control system. Compared with the existing gas fire extinguishing control system, the gas fire extinguishing control system of the utility model provides more comprehensive and accurate fire information through the mutual complementation and coordinated work of fire detectors and fire identification cameras. After the fire is extinguished, the gas fire extinguishing material is discharged in time through the fire accident fan control system of the utility model, avoiding the loss caused by the long-term residence of the gas fire extinguishing material. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic structural diagram of a fire accident fan control system according to an embodiment of the utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the NOR gate chip 7402TTL according to an embodiment of the utility model;
[0016] Figure 3 The utility model is a schematic diagram of the structure of a gas fire extinguishing control system according to an embodiment of the utility model.
[0017] Icons: 1- Fire identification camera; 2- Gas fire extinguishing control host; 3- Fire detector; 4- Accident fan; 5- NOR gate component; 6- Input module; 7- Cylinder solenoid valve; 8- Fire protection net. DETAILED DESCRIPTION
[0018] The utility model is described in detail below in conjunction with the accompanying drawings.
[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0020] Example 1
[0021] Figure 1 The present invention is a schematic structural diagram of a fire accident fan control system according to an embodiment of the present invention, comprising a fire detector (3), a gas fire extinguishing control host (2), an accident fan (4) ， A fire identification camera (1), an NOR gate component (5), and an input module (6); the alarm output ends of the fire detector (3) and the fire identification camera (1) are communicatively connected to the input end of the NOR gate component (5), the output end of the NOR gate component (5) is communicatively connected to the input end of the input module (6), the output end of the input module (6) is communicatively connected to a gas fire extinguishing control host (2), and the gas fire extinguishing control host (2) is communicatively connected to an emergency fan (4).
[0022] In this embodiment, all components in the system are connected through flame-retardant and fire-resistant control cables.
[0023] Furthermore, the cable used to connect the alarm output end of the fire identification camera (1) and the fire detector (3) with the input end of the NOR gate component (5), the output end of the NOR gate component (5) with the input module (6), the input module (6) with the gas fire extinguishing control host (2), and the gas fire extinguishing control host (2) with the emergency fan (4) may be of model ZRNH-KVVP-2×1.5.
[0024] In this embodiment, the fire identification camera (1) can be NP-FVR112-P; the gas fire extinguishing control host (2) can be GST-QKP01, which uses a 220V AC power supply; the temperature detector in the fire detector (3) can be JTW-ZCD-G3N, and the smoke detector can be TAD-169; the emergency fan (4) can be SZF-4.5D; further, the NOR gate component (5) can be 7402TTL, refer to Figure 2, the chip is a two-input four-NOR gate chip, which contains four independent two-input NOR gates. The output of the NOR gate is low (0) when any input of the NOR gate is high (1), and the output is high (1) only when both inputs of the NOR gate are low (0); the optional model of the input module (6) is WS6732;
[0025] In this embodiment, the fire identification camera (1) is wall-mounted in the indoor gas fire extinguishing room, with the bottom edge 2.5m above the ground, and the monitoring range of the fire identification camera (1) covers important equipment in the room. The gas fire extinguishing control host (2) is installed 0.4m on one side of the door of the gas fire extinguishing room, and the bottom edge is 1.4m above the ground. The fire detector (3) and the emergency fan (4) are both ceiling-mounted, installed on the ceiling of the gas fire extinguishing room, and the NOR gate component is installed at the 86-type bottom box at the rear end of the gas fire extinguishing host. The two input pins of the NOR gate component are respectively connected to the alarm output end of the fire identification camera and the alarm output end of the fire detector, and the output end of the NOR gate component is connected to the input end of the input module (6).
[0026] In this embodiment, the fire detector (3) includes two types: a temperature detector and a smoke detector. The temperature detector determines whether a fire occurs by comparing the temperature change with a set threshold value. When the temperature change sensed by the temperature detector exceeds the threshold value, an alarm signal is triggered; the smoke detector determines whether a fire occurs by comparing the number of smoke particles with a set threshold value. When the number of smoke particles sensed by the smoke detector exceeds the threshold value, an alarm signal is triggered; after any fire detector triggers an alarm signal, the alarm signal is input into the NOR gate component (5) through the alarm output terminal of the detector.
[0027] In this embodiment, the fire recognition camera (1) uses a highly sensitive optical sensor and an advanced image recognition algorithm to accurately identify and locate flames. When a flame is identified, the fire recognition camera will immediately trigger an alarm signal, which is input into the NOR gate component (5) through the alarm terminal of the fire recognition camera (1).
[0028] In this embodiment, the alarm signals of the fire detector (3) and the fire identification camera (1) are both switch quantities, and a switch quantity of 1 indicates that the monitored area is in a fire period, and a switch quantity of 0 indicates that the monitored area is in a non-fire period.
[0029] In this embodiment, the switch quantity output by the fire detector (3) and the fire identification camera (1) is used as the input of the NOR operation, and the input NOR gate component (5) performs a logic operation. The logic operation is implemented by a hardware circuit and does not rely on software or algorithms. The operation result is output as an output quantity to the input module (6). ，The input module is connected to the system bus of the gas fire extinguishing control host (2). The input module converts the logic operation result in the form of switch quantity into a bus signal recognizable by the gas fire extinguishing control host, and inputs the signal into the gas fire extinguishing control host (2) through the gas host bus interface, thereby realizing the control of the gas fire extinguishing control host (2) over the accident fan (4).
[0030] In this embodiment, the gas fire extinguishing control host (2) controls the emergency fan according to the result of the logic operation: if the output of the NOR gate component (5) is 1, the gas fire extinguishing control host (2) does not operate; if the output of the NOR gate component (5) is 0, the gas fire extinguishing control host (2) turns on the emergency fan (4).
[0031] Example 2
[0032] Figure 3 This is a schematic diagram of the structure of a gas fire extinguishing control system according to an embodiment of the utility model. The fire accident fan control system described in Example 1 is used to control the accident fan. The utility model also includes a cylinder solenoid valve (7) and a fire protection net (8). The cylinder solenoid valve (7) and the fire protection net (8) are both communicatively connected to the gas fire extinguishing host (2).
[0033] In this embodiment, the cable used to connect the cylinder solenoid valve (7), the fire protection net (8) and the gas fire extinguishing control host (2) can be of the type ZN-KVV-4×1.5.
[0034] The steel cylinder electromagnetic valve (7) is controlled by the gas fire extinguishing main unit (2). When a fire occurs, the steel cylinder electromagnetic valve (7) is opened to control the release of the gas fire extinguishing substance.
[0035] The fireproof net (8) is controlled by the gas fire extinguishing host (2). When a fire occurs, the gas fire extinguishing host (2) controls the fireproof net to be lowered, further preventing the spread of the flame and ensuring that the fire is more effectively controlled.
[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A fire accident fan control system, characterized in that: The invention comprises a fire detector (3), a gas fire extinguishing control host (2), an emergency blower (4), a fire identification camera (1), an NOR gate component (5), and an input module (6); the alarm output ends of the fire detector (3) and the fire identification camera (1) are communicatively connected to the input end of the NOR gate component (5), the output end of the NOR gate component (5) is communicatively connected to the input end of the input module (6), the output end of the input module (6) is communicatively connected to the gas fire extinguishing control host (2), and the gas fire extinguishing control host (2) is communicatively connected to the emergency blower (4).
2. A fire accident fan control system according to claim 1, characterized in that: All components in the system are connected by flame-retardant and fire-resistant control cables.
3. A fire accident fan control system according to claim 1, characterized in that: The fire detector (3) comprises a temperature detector and a smoke detector.
4. A fire accident fan control system according to claim 1, characterized in that: The fire detector (3) and the emergency fan (4) are both ceiling mounted and installed on the ceiling of the gas fire extinguishing room.
5. A fire accident fan control system according to claim 1, characterized in that: The NOR gate component (5) is installed at the 86-type bottom box at the rear end of the gas fire extinguishing host.
6. A gas fire extinguishing control system, comprising the fire accident fan control system according to any one of claims 1 to 5, characterized in that: It also includes a steel cylinder solenoid valve (7) and a fire protection net (8), and the steel cylinder solenoid valve (7) and the fire protection net (8) are both communicatively connected to the gas fire extinguishing control host (2).