Steel cylinder solenoid valve automatic fire extinguishing system
By installing solenoid valves and sensor circuits on the fire extinguishing cylinder pipeline, the problem of manual intervention in the existing fire extinguishing system is solved, automatic fire extinguishing is realized in places without fire fighting pipelines, and timely fire extinguishing is ensured in the early stage of the fire.
Patent Information
- Application Number
- CN202410298036.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-09-16
AI Technical Summary
The existing fire extinguishing system requires manual intervention and cannot be automatically activated at the early stage of a fire, especially in special occasions where there are no fire-fighting pipes.
Install a solenoid valve on the fire extinguishing cylinder pipeline and equip it with a temperature sensor or smoke sensor circuit. Use the thermistor circuit to activate the solenoid valve at the early stage of a fire to ensure that the fire extinguishing material is sprayed from multiple points.
It realizes automatic fire extinguishing in places without fire pipes, and can be activated in time at the early stage of fire to prevent the fire from spreading.
Smart Images

Figure CN120643855A_ABST
Abstract
Description
[0001] This invention is an automatic fire extinguishing system with a steel cylinder solenoid valve. By installing a solenoid valve on a standard fire extinguisher cylinder line, and arranging a temperature sensor (or smoke sensor) to activate the solenoid valve circuit, the system automatically extinguishes fires through a fine-hole water jet outlet at the end of the line. This innovative invention allows for self-extinguishing fires even in locations without fire protection piping.
[0002] In the past, using fire extinguishers to put out fires required manual intervention. However, some fires can be very intense, such as spontaneous combustion of batteries in electric vehicles, requiring immediate attention and immediate fire extinguishing. For example, in a car accident, where everyone is knocked unconscious and the car spontaneously combusts, extinguishing the fire immediately is a challenge addressed by this invention. This allows for automatic fire extinguishing at the earliest stage, a novel solution and an innovative approach to automatic fire extinguishing.
[0003] The present invention has the following features: First, a solenoid valve is installed on the fire extinguisher cylinder pipeline, and a temperature sensor (or smoke sensor) circuit is used to activate the solenoid valve. Second, the temperature sensor's thermistor circuit is installed in the environment where fire extinguishing is required, with multiple thermistor circuits configured for fire monitoring. Third, multiple outlets at the end of the fire extinguisher cylinder's spray pipe simultaneously spray fireproof material. Fourth, the end of the cylinder's spray pipe is designed with various shaped fine-hole water jet outlets, or a single-hole water jet outlet.
[0004] The steel cylinders referred to in this invention are specifically fire extinguishing cylinders. In the context of the present invention, the cylinders can be small or large, depending on the environment and firefighting requirements. The pressure within the cylinder, the choice of fireproofing materials, and the fireproofing methods all require custom customization. Their use and maintenance are the same as those of standard fire extinguisher cylinders. Once a cylinder is used, it can simply be replaced. This invention proposes a novel solution that aligns the firefighting outlet with a localized point where a fire may occur and then installs a thermistor circuit at that point to trigger an alarm and extinguish the fire.
[0005] The specification includes the drawings and descriptions of the drawings. Figure 1 This is a summary of the entire solution of the present invention, mainly introducing the layout design of the monitoring and starting circuits and the fire fighting pipes of the fire fighting cylinders. Figure 1 In the figure, the digital symbol ① represents the electromagnetic valve switch, which is an important feature of the present invention and mainly controls the switch of the steam pressure material in the fire cylinder. The digital symbol ② represents the 12V low voltage circuit (see Figure 2), digital symbol ③ represents the temperature sensor. When the thermistor of the temperature sensor is heated in the fire, the solenoid valve switch will open. Digital symbol ④ represents the smoke sensor. The smoke sensor is generally used in warehouses where smoking is absolutely prohibited, aircraft cargo holds, etc. When the smoke alarm detects the smoke alarm, the solenoid valve switch in the circuit is activated to extinguish the fire automatically. Digital symbol ⑤ represents the fire cylinder, which is an important feature of the present invention. Digital symbol ⑥ represents the water-liquid fire-fighting material. Digital symbol ⑦ represents the dry powder fire-fighting material. Digital symbol ⑧ represents the cylinder pressure gauge. During routine fire inspections, it is necessary to check whether the pressure of this gauge is sufficient. Digital symbol ⑨ represents the position of the manual switch of the fire hood. Digital symbol ⑩ represents the high-pressure hose circuit. Digital Represents a hemispherical pore water outlet. Number symbols Indicates a long, narrow hole water jet outlet. Indicates a single-hole water jet outlet, a digital symbol A box for storing car batteries. Indicates flame. Numeric symbol Indicates the connection nut, connect the solenoid valve like an oxygen cylinder. After the solenoid valve is installed, turn on the manual switch of the fire hood with the number symbol ⑨ to put it into working state.
[0006] Figure 1 In the middle, the temperature sensor ③ senses the flame After combustion, the solenoid valve switch is activated. The fine-hole water jet outlet simultaneously ejects fire-fighting materials to automatically extinguish the fire. Figure 1 The smoke sensor ④ senses the smoke and activates the solenoid valve switch. The fine-hole water jet outlet simultaneously ejects fire-fighting materials to automatically extinguish the fire. Figure 1 The fine hole water jet outlet can be one or more outlets for simultaneous jet fire extinguishing.
[0007] Figure 1 In the present invention, the thermistor circuit of the temperature sensor can be set in multiple places in the fireproof space, so that early fires can be discovered early and fire extinguishing work can be achieved in advance, which is a major innovation of the present invention.
[0008] Before the solenoid valve is activated, the fire-fighting pipeline from the solenoid valve to the terminal is empty. When the solenoid valve is activated, the fire-fighting extinguishing material is ejected from the fine-hole water jet outlet to automatically extinguish the fire.
[0009] Figure 1 This is a diagram showing the present invention working in extinguishing a car battery fire. We know that a car battery fire is a flash fire and the sooner the fire is extinguished the better. The present invention arranges thermistor circuits ③ in multiple locations inside and outside the car battery storage box. When the internal flame When the fire starts, the thermistor circuit will alarm and start the solenoid valve ① to work, so that the dry powder fire extinguishing agent ⑦ will rush to the end outlet through the pipe ⑩. (fine-hole water jet outlet) to automatically start the fire extinguishing work immediately. This is the innovation of the present invention. This avoids the occurrence of a major fire accident that burns the entire vehicle body.
[0010] Instructions attached Figure 2 This is a circuit diagram for a temperature sensor activating a solenoid valve. The most important symbols in the diagram are numeral ①, which represents a thermistor, and numeral ②, which represents a solenoid valve switch. When in use, the thermistor should be covered with a foam cap to protect it from moisture. A key innovation of this invention is installing a thermistor circuit in the space where fire extinguishing is required. This allows for early detection of a fire, thereby activating the solenoid valve switch and extinguishing the fire immediately. The circuit for a smoke sensor activating a solenoid valve operates in much the same way. Detecting smoke and triggering the alarm activates the solenoid valve switch, enabling automatic fire extinguishing to occur earlier. This is a key innovation of this invention. The 12V voltage indicated in the diagram represents the vehicle voltage or battery voltage.
[0011] Instructions attached Figure 3 This diagram illustrates the fire extinguishing effect of the present invention in an aircraft cargo hold. In the diagram, symbol ① represents the smoke alarm sensor. Symbol ② represents the temperature sensor. Symbol ③ represents the hemispherical fine-hole water jet outlet. Symbol ④ represents the cargo pallet. Symbol ⑤ represents the cargo. Symbol ⑥ represents the fire smoke. Symbol ⑦ represents the flames. Symbol ⑧ represents the water-based fire extinguishing material. In Figure ③, when a fire breaks out, flame ⑦ burns the thermistor circuit ②, activating the solenoid valve. Firefighting water is ejected from the cylinder and through the hemispherical fine-hole water jet outlet ③, automatically extinguishing the fire. Figure 3 The smoke sensor ① senses the occurrence of smoke ⑥, the alarm starts the solenoid valve to work, and the fire water is sprayed out from the cylinder and ejected through the hemispherical fine hole water outlet ③ to automatically extinguish the fire. Figure 3 Two monitoring alarm and automatic fire extinguishing schemes are used. Temperature sensors are designed at multiple locations in the space to deal with fire, which is an important feature of the present invention.
[0012] Figure 4 This is an automatic fire extinguishing system for electric motorcycles. In the figure, symbol ① represents the solenoid valve, symbol ② represents the thermistor circuit, symbol ③ represents the fire cylinder, a small, specially designed cylinder designed for extinguishing electric motorcycle battery fires. Symbol ④ represents dry powder fire extinguishing agent. Symbol ⑤ represents the battery storage box. Symbol ⑥ represents the battery pack. Symbol ⑦ represents the high-pressure hose. Symbol ⑧ represents the fire flame. Figure 4 In this example, when battery ⑥ catches fire and burns ⑧, burning the thermistor circuit ②, the solenoid valve switch ① is activated, and the dry powder fire extinguishing agent ④ in the fire cylinder is sprayed through a high-pressure hose ⑦ into the battery storage box ⑤, completing the automatic fire extinguishing process. This is a major innovation of the present invention, enabling the smooth implementation of automatic fire extinguishing in electric motorcycles.
[0013] Figure 5The invention is applied in the automatic fire extinguishing work of automobiles. Figure 5 In the diagram, symbol ① represents a fire cylinder. Symbol ② represents a thermistor circuit. Numerous thermistor circuits are arranged in this diagram to ensure immediate fire detection and extinguishing. Symbol ③ represents a rectangular, narrow-hole water jet outlet. Symbol ④ represents the ejected firefighting water. Symbol ⑤ represents a high-pressure fire hose. Symbol ⑥ represents a flame. Figure 5 When a flame ignites thermistor circuit ②, the solenoid valve activates, and fire water is sprayed out from outlet ③ to extinguish the fire. This automatic fire extinguishing feature is a novel solution of the present invention. This invention also has a fire extinguishing design specifically designed for automotive fuel tanks, automatically extinguishing early-stage fuel tank fires and providing excellent fire protection.
[0014] The present invention can be widely used for fire protection in important spaces without fire-fighting pipes, and provides a new automatic fire-fighting solution for fires in certain electrical equipment, important machines, etc. For example, the automatic fire-fighting of electrical equipment on spacecraft, aircraft, and ships, as well as tankers and hazardous chemical transporters, can all adopt the solution of the present invention as a fire prevention and control measure. The present invention successfully solves the problem of automatic fire-fighting solutions in special occasions without fire-fighting pipes, which is a major breakthrough in firefighting work and a milestone. This is an excellent new fire-fighting system, and the important contribution of the present invention is the new invention and innovation of detecting fires in their early stages and automatically extinguishing them.
Claims
1. A cylinder solenoid valve automatic fire extinguishing system. A solenoid valve is installed on the fire extinguisher cylinder pipeline, with a fine-hole water jet outlet or a single-hole water jet outlet at the end of the pipeline. The solenoid valve is connected to a temperature sensor circuit and a smoke alarm circuit.
2. A cylinder solenoid valve automatic fire extinguishing system. A temperature sensor circuit activates the solenoid valve, which ejects the fire retardant material in the fire extinguisher bottle from the fine water jet outlet at the end of the pipe.
3. A cylinder solenoid valve automatic fire extinguishing system. The smoke alarm circuit activates the solenoid valve, which ejects the fire retardant material in the fire extinguisher bottle from the fine water jet outlet at the end of the pipe.
4. A cylinder solenoid valve automatic fire extinguishing system, in which thermistor circuits are installed at multiple locations in the fire extinguishing space environment as solenoid valve starting circuits.
5. A cylinder solenoid valve automatic fire extinguishing system that uses a solenoid valve switch to spray fireproof material into the vehicle battery storage box through a high-pressure hose.
6. A cylinder solenoid valve automatic fire extinguishing system, in which one solenoid valve switch can control multiple outlets to spray fire-fighting materials in the cylinder simultaneously.