A suspended automatic fire extinguisher

Abstract

The utility model belongs to fire extinguishing equipment technical field especially relates to a kind of automatic fire extinguisher of suspension, comprising: shell, fire extinguishing medium storage cavity is arranged in shell, the bottom of shell is provided with medium spray pipe;Suspension part, suspension part is arranged at the top of shell and is used to hang shell in fire-sensitive area or the top of fire-prone equipment;Further comprising: early intervention mechanism, early intervention mechanism includes intervention medium carrier part and monitoring system;Wherein, monitoring system is used to monitor the state of intervention medium carrier part and the temperature at fire-sensitive area or fire-prone equipment, intervention medium carrier part can automatically release intervention medium with cooling and fire extinguishing effect before fire or in early stage of fire, relative to prior art, the utility model solves the defect that traditional equipment can only passive fire extinguishing, and greatly reduces fire loss.

Description

Technical Field

[0001] This utility model belongs to the field of fire extinguishing equipment technology, and in particular relates to a suspended automatic fire extinguisher. Background Technology

[0002] A suspended automatic fire extinguisher is a fire extinguishing device installed above fire-sensitive areas or fire-prone equipment. It is typically used to automatically detect fires and quickly activate extinguishing mechanisms. Unlike traditional fire extinguishers, it achieves rapid response by being fixed in the air and equipped with an automatic triggering device. For example, a suspended automatic fire extinguisher disclosed in patent application number CN201520296601.1 includes a cylinder and a valve body installed at the upper opening of the cylinder. Pressure gauges and gas injection assemblies are respectively installed on both sides of the valve body. A nozzle and a heat-sensing device are also provided on the upper part of the valve body, with a spiral inside the nozzle. A hook is installed at the lower part of the cylinder. The existing suspended automatic fire extinguishers have a high activation temperature for their temperature or heat sensors, typically exceeding 120 degrees Celsius. However, by the time a fire reaches this temperature, it has already caused significant damage and losses. Furthermore, the existing suspended automatic fire extinguishers have a small spray range, resulting in unsatisfactory fire suppression effects. Therefore, improvements are necessary. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a suspended automatic fire extinguisher to reduce the damage and losses caused by fires and improve the fire extinguishing effect.

[0004] In view of this, the present invention provides a suspended automatic fire extinguisher, comprising: The housing has a fire extinguishing medium storage chamber and a medium spray pipe at the bottom end of the housing. A suspension unit is provided at the top of the housing for suspending the housing above fire-sensitive areas or fire-prone equipment. Also includes: An early intervention mechanism, comprising an intervention medium carrier and a monitoring system; The monitoring system is used to monitor the status of the intervention medium carrier and the temperature of fire-sensitive areas or fire-prone equipment. The intervention medium carrier can automatically release an intervention medium with both cooling and fire extinguishing effects before or in the early stages of a fire.

[0005] In this technical solution, the monitoring system of the early intervention mechanism monitors the temperature of the protected area and the status of the intervention medium in real time. When the temperature rises but does not reach the fire critical value, the operating power of the equipment can be adjusted through the external terminal to avoid heat accumulation. When heat accumulation cannot be controlled, the intervention medium is actively released and uses its low temperature characteristics to cool down quickly, suppressing the occurrence of fire or extinguishing the initial fire. This solves the defect of traditional equipment that can only passively extinguish fires and greatly reduces fire losses.

[0006] In the above technical solution, the intervention medium carrier further includes: A retaining ring is provided around the outer surface of the housing, and two mounting portions are symmetrically distributed on the retaining ring along the radial direction of the housing. The carrier body is mounted on the mounting part, and the carrier body has an interference medium storage cavity and a sealing cover at the bottom. The carrier body and the sealing cap are both made of polymer material. The intervention medium storage cavity is filled with intervention medium, which can expand when heated. The sealing cap is provided with stress crush points.

[0007] Furthermore, in the above technical solution, the monitoring system also includes: A medium pressure sensor is disposed on the top of the carrier body, and the sensing end of the medium pressure sensor extends into the intervention medium storage cavity to detect pressure changes of the intervention medium. A temperature detection sensor is installed in fire-sensitive areas or at fire-prone equipment to detect temperature changes during thermal processes.

[0008] Furthermore, the above technical solution also includes: A rotating nozzle is rotatably mounted at the bottom end of a medium nozzle and communicates with the medium nozzle. A main nozzle is provided at the bottom of the rotating nozzle. The auxiliary nozzle has two nozzles and is symmetrically distributed on both sides of the rotating nozzle. The output end of the auxiliary nozzle is inclined downward and the axial line of the auxiliary nozzle has an acute angle between it and the radial line of the symmetrically distributed rotating nozzle on the horizontal projection plane. The rotating nozzle has three branch pipes, which are connected to the main nozzle and two auxiliary nozzles respectively.

[0009] In the above technical solution, the suspension part further includes: A suspension rod is disposed at the top of the housing and fixedly connected to the housing; A sleeve rod, which is sleeved on a suspension rod, has a hook at the top and a fastening bolt on one side of the bottom of the sleeve rod; The fastening bolt is threaded to the sleeve rod and can be adjusted by rotation to move radially along the sleeve rod. The suspension rod can move up and down axially along the sleeve rod and is fixed by being pressed against the surface of the suspension rod by the fastening bolt.

[0010] The beneficial effects of this utility model are: 1. Achieve early thermal intervention and suppress fires at the source: The monitoring system of the early intervention mechanism monitors the temperature of the protected area and the status of the intervention medium in real time. When the temperature rises but does not reach the fire threshold, the operating power of the equipment can be adjusted through the external terminal to avoid heat accumulation. When heat accumulation cannot be controlled, the intervention medium is actively released and uses its low temperature characteristics to cool down quickly, suppressing the occurrence of fire or extinguishing the initial fire. This solves the defect of traditional equipment that can only passively extinguish fires and greatly reduces fire losses.

[0011] 2. Wide spray range and excellent fire extinguishing effect: The rotating nozzle assembly is driven to rotate by the thrust generated by the medium sprayed from the secondary nozzle. The main nozzle and the secondary nozzle work together to achieve circumferential spraying, which expands the coverage range by 2-3 times compared with the fixed nozzle. It can adapt to the protection needs of larger areas and complex equipment structures, ensure that the fire extinguishing medium evenly covers the risk area, and improve the fire extinguishing efficiency.

[0012] 3. Flexible installation and strong versatility: The telescopic structure of the suspension part can be freely adjusted according to the protection height requirements, adapting to places with different floor heights and equipment with different heights. The hook-type design facilitates quick installation and disassembly, and can be flexibly applied to various scenarios such as power distribution rooms, computer rooms, and warehouses.

[0013] 4. Real-time status monitoring and timely early warning: The dual-sensor design of the monitoring system enables full monitoring of the heat accumulation process. The pressure sensor reflects the state of the intervention medium, and the temperature sensor directly detects the equipment temperature. The data is transmitted to the terminal in real time, which allows users to keep abreast of the risk dynamics and take intervention measures in advance to avoid the risk from escalating.

[0014] 5. Secondary fire suppression guarantee for more reliable protection: When the early intervention mechanism fails to fully control the fire, the fire extinguishing medium in the shell is activated and released at a high temperature of 120°C, and performs secondary fire suppression through the rotating nozzle, forming a dual protection mechanism of "early intervention-secondary fire suppression" to ensure that the fire is effectively controlled and improve the reliability of protection. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the main structure of the carrier of this utility model.

[0019] Figure 4 This is a schematic diagram of the rotating nozzle structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the suspension part structure of this utility model.

[0021] The markings in the diagram are as follows: 1. Housing; 2. Medium nozzle; 3. Suspension part; 30. Suspension rod; 31. Sleeve rod; 32. Fastening bolt; 4. Early intervention mechanism; 40. Intervention medium carrier part; 400. Fixing ring; 401. Mounting part; 402. Carrier body; 403. Sealing cover; 41. Monitoring system; 410. Medium pressure sensor; 5. Rotating nozzle; 50. Main nozzle; 6. Secondary nozzle; 7. Branch pipeline. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] The suspended automatic fire extinguisher of this utility model includes a shell, a suspension part, an early intervention mechanism, and a rotating nozzle assembly. The components work together to achieve early thermal intervention, large-area fire extinguishing, and flexible installation.

[0025] Casing 1 The casing 1, serving as the foundation for storing and installing the extinguishing medium, is constructed from two conventionally symmetrical, hemispherical shells joined together. The joints are secured by welding or high-strength sealant to ensure a tight seal and prevent leakage of the extinguishing medium. Inside casing 1, an extinguishing medium storage chamber is formed to store conventional extinguishing media (such as ABC dry powder or water-based extinguishing media) and pressurized nitrogen. The pressurized nitrogen provides the power for releasing the extinguishing medium. An integrally formed medium nozzle 2 is located at the bottom of casing 1. The medium nozzle 2 communicates with the extinguishing medium storage chamber, and a conventional temperature-sensitive sealing structure (such as a temperature-sensitive glass bulb) is installed at the connection point. This temperature-sensitive glass bulb shatters at temperatures above 120°C, thereby opening the medium nozzle 2 and the extinguishing medium storage chamber, enabling the release of the extinguishing medium.

[0026] Suspension Part 3 The suspension unit 3 is located at the top of the housing 1 and is used to suspend and fix the fire extinguisher above fire-sensitive areas or fire-prone equipment. Its structure includes a suspension rod 30 and a sleeve rod 31. The suspension rod 30 is a cylindrical metal rod, vertically positioned at the center of the top of the housing 1, and is fixedly connected to the housing 1 by welding to ensure connection strength. The sleeve rod 31 is a hollow cylindrical structure, fitted onto the suspension rod 30. A hook made of stainless steel is welded to the top of the sleeve rod 31 for easy hanging on a pre-set suspension bracket or crossbeam. A threaded hole is provided on one side of the bottom of the sleeve rod 31, and a fastening bolt 32 is installed in the threaded hole. The fastening bolt 32 is threadedly connected to the sleeve rod 31, and its radial movement distance along the sleeve rod 31 can be adjusted by rotating the fastening bolt 32. The suspension rod 30 can move freely up and down along the axis of the sleeve rod 31 to adapt to different protection height requirements. After adjustment, tighten the fastening bolt 32 so that the end of the fastening bolt 32 presses against the surface of the suspension rod 30. The suspension rod 30 and the sleeve rod 31 are fixed by friction, thereby locking the suspension height of the fire extinguisher.

[0027] Early intervention institution 4 The early intervention mechanism 4, as the core innovative component of this invention, is used to perform thermal intervention before or in the early stages of a fire. It includes an intervention medium carrier 40 and a monitoring system 41, which work together to achieve temperature monitoring and proactive intervention.

[0028] The intervention medium carrier section 40 includes a fixing ring 400, a mounting section 401, a carrier body 402, and a sealing cap 403. The fixing ring 400 is a ring-shaped metal structure, fixed to the outer surface of the housing 1 by conventional welding or bonding. The axis of the fixing ring 400 coincides with the axis of the housing 1 to ensure uniform force distribution. Two mounting sections 401 are symmetrically distributed radially along the fixing ring 400. The mounting sections 401 are ring-shaped, with their inner diameter matching the outer diameter of the carrier body 402, used to embed and fix the carrier body 402. The carrier body 402 is made of polymer material (such as polyamide or polyethylene) and can be designed into shapes such as hoses or capsules according to protection requirements. It is embedded in the ring-shaped mounting sections 401, and is either interference-fitted with the mounting sections 401 or fixed by bonding. An intervention medium storage cavity is formed inside the carrier body 402, used to fill an intervention medium that has both cooling and fire extinguishing effects. This intervention medium is based on chemical fire extinguishing components, and its temperature is below 0°C upon release. It can quickly absorb heat to achieve cooling while also possessing fire extinguishing properties. A sealing cap 403 is provided at the bottom of the carrier body 402. The sealing cap 403 is also made of polymer material and is fixed to the bottom of the carrier body 402 by welding or bonding to achieve sealing of the intervention medium storage cavity. The sealing cap 403 is provided with a stress crushing point, which is an annular area on the sealing cap 403 with reduced thickness (thickness is 1 / 3 to 1 / 2 of the other areas of the sealing cap 403). Under the pressure generated by the thermal expansion of the intervention medium, it can preferentially rupture to form a nozzle, thereby achieving directional release of the intervention medium.

[0029] Monitoring system 41: Used for real-time monitoring of the status of the intervention medium carrier section 40 and the temperature of the protected area, including a medium pressure sensor 410 and a temperature detection sensor. The medium pressure sensor 410 is fixedly installed on the top of the carrier body 402, with its sensing end extending through the wall of the carrier body 402 into the intervention medium storage cavity, used to detect real-time pressure changes of the intervention medium, thereby reflecting the thermal expansion state of the intervention medium. The temperature detection sensor is fixed by a bracket in fire-sensitive areas or critical hot areas of fire-prone equipment (such as near the heat-generating components of the equipment), used to directly detect temperature changes during the thermal process of the protected object. Both the medium pressure sensor 410 and the temperature detection sensor are connected to an external monitoring terminal via a wireless communication module (such as Bluetooth or LoRa module), transmitting the detection data to the terminal in real time to achieve status monitoring and early warning.

[0030] Rotary nozzle 5-piece assembly The rotating nozzle 5 assembly is used to expand the spray range of the extinguishing medium and includes a rotating nozzle 5, a main nozzle 50, and a secondary nozzle 6. The rotating nozzle 5 is installed at the bottom end of the medium nozzle 2 via a conventional rotating connection (such as a rotating bearing). The outer wall of the medium nozzle 2 is fitted with a rotating bearing, and the inner wall of the rotating nozzle 5 is fixedly connected to the outer ring of the rotating bearing. A conventional rotating sealing structure (such as a sealing ring) is arranged between the inner wall of the rotating nozzle 5 and the outer wall of the medium nozzle 2 to ensure sealing performance while allowing flexible rotation. The internal structure of the rotating nozzle 5 is divided into an upper and lower part. The upper part is a hollow tube structure that communicates with the medium nozzle 2 and is used to receive the extinguishing medium. The lower part is a solid structure with three branch pipes 7 inside. The input ends of the three branch pipes 7 are all connected to the upper tube structure, and the output ends extend to the bottom and sides of the rotating nozzle 5, respectively. The main nozzle 50 is fixedly installed at the bottom of the rotating nozzle 5 and communicates with the output end of one of the branch pipes 7 for spraying the extinguishing medium downwards. Two auxiliary nozzles 6 are provided, symmetrically distributed on both sides of the rotating nozzle 5 along its radial direction. Each auxiliary nozzle 6 is connected to the output end of a branch pipe 7. The output end of the auxiliary nozzle 6 is inclined downward, and the axial line of the auxiliary nozzle 6 forms an acute angle of 30°-60° with the radial line of the symmetrically distributed rotating nozzle 5 on the horizontal projection plane. When the extinguishing medium is sprayed from the auxiliary nozzle 6, it generates a thrust along the circumference of the rotating nozzle 5, causing the rotating nozzle 5 to rotate around the axis of the medium spray pipe 2, thereby realizing the circumferential spraying of the extinguishing medium and expanding the coverage area.

[0031] Work process The workflow of the suspended automatic fire extinguisher in this embodiment is divided into an early intervention stage, a secondary fire extinguishing stage, and a status feedback stage, as detailed below: (1) Early intervention stage Monitoring and early warning: When the electrical control cabinet is running, the temperature detection sensor detects the temperature inside the cabinet in real time, and the medium pressure sensor 410 detects the pressure of the intervention medium in real time. The data is transmitted to the external monitoring terminal through the wireless module. Active intervention: When the temperature inside the cabinet rises to 50℃ (the temperature at which the intervention medium begins to expand significantly), the intervention medium expands due to heat, resulting in an increase in pressure. The medium pressure sensor 410 detects the pressure change (e.g., from 0.1MPa to 0.3MPa) and transmits the signal to the terminal. At this time, the temperature has not reached the critical value (70℃). The user controls the electrical control cabinet through the terminal to reduce the operating power and reduce heat generation. Passive intervention: If the temperature continues to rise after power adjustment, the intervention medium continues to expand, and the pressure further rises to 0.6MPa. The stress crush point on the sealing cover 403 will rupture due to the inability to withstand the pressure, forming a nozzle with a diameter of about 5cm. Under pressure, the intervention medium is sprayed out from the nozzle, covering the heat-generating area of ​​the electrical control cabinet in a mist form. It uses the low temperature of -10℃ to quickly absorb heat, achieve cooling and reduce temperature, and inhibit heat accumulation. If initial sparks have appeared, the intervention medium will also play a fire extinguishing role, directly extinguishing the initial fire.

[0032] (2) Secondary fire extinguishing stage If early intervention fails to completely control the fire and the fire continues to spread, when the temperature inside the cabinet rises to 120°C, the temperature-sensitive glass bulb at the connection between the medium nozzle 2 and the fire extinguishing medium storage chamber will shatter, opening the fire extinguishing medium channel. The pressurized nitrogen gas in the extinguishing medium storage chamber propels the ABC dry powder extinguishing medium through the medium nozzle 2 and into the rotary nozzle 5; The extinguishing medium is divided into three routes, which are delivered to the main nozzle 50 and two auxiliary nozzles 6 through three branch pipes 7 respectively; the main nozzle 50 sprays the extinguishing medium downwards, covering the top area of ​​the control cabinet; the two auxiliary nozzles 6 spray downwards at an angle, generating a thrust (about 5N) along the circumference of the rotating nozzle 5, which drives the rotating nozzle 5 to rotate around the medium spray pipe 2 at a speed of 30r / min. During the rotation of the rotary nozzle 5, the extinguishing medium sprayed by the auxiliary nozzle 6 forms a circumferential spray area, which, combined with the vertical spray of the main nozzle 50, achieves extinguishing of the electrical control cabinet and its surrounding 10m area. 2 The fire was completely extinguished with full coverage of the affected area.

[0033] (3) Status feedback stage In the early intervention phase, when the intervention medium is released, the medium pressure sensor 410 detects a sudden drop in pressure (from 0.6MPa to below 0.1MPa) and immediately sends a warning signal to the terminal that "the intervention medium has been released", prompting the user to replace the carrier body 402 in time; During the secondary fire extinguishing stage, after the fire extinguishing medium is released, the pressure gauge on the housing 1 shows that the pressure drops to 0. After receiving the sensor signal, the terminal sends a "fire extinguishing medium is exhausted" prompt, reminding the user to replace the fire extinguisher or replenish the fire extinguishing medium. Throughout the entire operation, the temperature detection sensor continuously transmits temperature data, enabling users to track the development of the fire and optimize protection plans.

[0034] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A suspended automatic fire extinguisher, comprising: The housing (1) has a fire extinguishing medium storage chamber and a medium spray pipe (2) is provided at the bottom end of the housing (1). The suspension part (3) is provided at the top of the housing (1) for suspending the housing (1) above fire-sensitive areas or fire-prone equipment; Its characteristic is that it further includes: An early intervention mechanism (4) includes an intervention medium carrier (40) and a monitoring system (41); The monitoring system (41) is used to monitor the status of the intervention medium carrier (40) and the temperature of fire-sensitive areas or fire-prone equipment. The intervention medium carrier (40) can automatically release an intervention medium that has both cooling and fire extinguishing effects before or at the beginning of a fire.

2. A suspended automatic fire extinguisher according to claim 1, characterized in that, The intervention medium carrier also includes: A fixing ring (400) is provided around the outer surface of the housing (1), and two mounting parts (401) are symmetrically distributed on the fixing ring (400) along the radial direction of the housing (1); The carrier body (402) is disposed on the mounting part (401), the carrier body (402) is provided with an interference medium storage cavity, and the bottom of the carrier body (402) is provided with a sealing cap (403); The carrier body (402) and the sealing cap (403) are both made of polymer material. The intervention medium storage cavity is filled with intervention medium, which can expand when heated. The sealing cap (403) is provided with stress crushing points.

3. A suspended automatic fire extinguisher according to claim 2, characterized in that, The monitoring system (41) also includes: A medium pressure sensor (410) is disposed on the top of the carrier body (402), and the sensing end of the medium pressure sensor (410) extends into the intervention medium storage cavity to detect the pressure change of the intervention medium. A temperature detection sensor is installed in fire-sensitive areas or at fire-prone equipment to detect temperature changes during thermal processes.

4. A suspended automatic fire extinguisher according to claim 3, characterized in that, Also includes: A rotating nozzle (5) is rotatably disposed at the bottom end of a medium nozzle (2) and communicates with the medium nozzle (2). A main nozzle (50) is disposed at the bottom of the rotating nozzle (5). The auxiliary nozzle (6) has two parts and is symmetrically distributed on both sides of the rotating nozzle (5). The output end of the auxiliary nozzle (6) is inclined downward and the axial line of the auxiliary nozzle (6) has an acute angle between it and the radial line of the symmetrically distributed rotating nozzle (5) on the horizontal projection plane. The rotating nozzle (5) has three branch pipes (7), which are connected to the main nozzle (50) and two auxiliary nozzles (6) respectively.

5. A suspended automatic fire extinguisher according to claim 4, characterized in that, The suspension part (3) also includes: A suspension rod (30) is disposed on the top of the housing (1) and fixedly connected to the housing (1); Sleeve rod (31), the sleeve rod (31) is sleeved on the suspension rod (30), the top of the sleeve rod (31) is provided with a hook, and the bottom side of the sleeve rod (31) is provided with a fastening bolt (32); The fastening bolt (32) is threadedly connected to the sleeve rod (31) and moves radially along the sleeve rod (31) by rotation adjustment. The suspension rod (30) can move up and down along the axial direction of the sleeve rod (31) and is fixed by being pressed against the surface of the suspension rod (30) by the fastening bolt (32).

Images