A portable blocking fire extinguishing lance special for plateau Tibetan-style building fire

Abstract

The application discloses a portable blocking fire extinguishing lance special for plateau Tibetan-style building fire, and relates to the field of fire extinguishing equipment, which comprises a hollow conveying rod body, a piercing and breaking assembly arranged at the front end of the hollow conveying rod body, and a fire extinguishing medium input interface arranged at the rear end of the hollow conveying rod body, wherein the piercing and breaking assembly comprises a hollow piercing head and a plurality of medium release ports, the hollow conveying rod body is internally provided with a fire extinguishing medium conveying channel in communication with the hollow piercing head and the fire extinguishing medium input interface, and the front end of the hollow piercing head is conical in shape. The portable blocking fire extinguishing lance special for plateau Tibetan-style building fire has the functions of breaking and fire extinguishing, can pierce through the roof color steel tile covering layer and convey the fire extinguishing medium to the indoor layer, solves the technical problem that conventional fire extinguishing means cannot penetrate the covering layer and directly reach the fire source, and is suitable for rapid and accurate fire fighting of plateau Tibetan-style dwelling fire.

Description

Technical Field

[0001] This invention relates to fire-fighting equipment technology, specifically to a portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau. Background Technology

[0002] Tibetan-style dwellings, as the most representative traditional architectural form in the Tibetan-inhabited plateau regions, are widely distributed in high-altitude areas of Tibet, Sichuan, Yunnan, and Qinghai provinces. These buildings typically employ a mixed earth, stone, and wood structure, with thick walls, small, airtight doors and windows, and roofs usually covered with wooden beams and insulated materials such as mud and straw mats. In recent years, with increasing demands for waterproofing and insulation, more and more Tibetan-style dwellings have added fire-retardant coverings such as iron-coated steel sheets to their original roof structures. At the same time, Tibetan-style dwellings contain a variety of flammable materials and have a high fire load. Hanging thangkas, curtains, and commonly used butter lamps are highly flammable, and once a fire breaks out, it burns rapidly and fiercely.

[0003] The unique architectural structure of Tibetan dwellings presents numerous technical challenges for firefighting. The thick walls and minimal windows create a high-temperature, high-pressure, enclosed environment where heat and smoke cannot dissipate effectively, making it highly susceptible to flashover within a short time. The fire-retardant roofing, such as corrugated iron sheets, physically blocks extinguishing agents, preventing conventional direct or spray-type fire suppression methods from penetrating the roof and reaching the fire source, resulting in low extinguishing efficiency and prolonged fire spread. Furthermore, the average altitude in high-altitude areas exceeds 3000 meters, with atmospheric pressure only 60% to 70% of that in plains areas. This severe oxygen deficiency leads to significant physical exertion for firefighters, and the performance of firefighting equipment is also significantly affected by the low-pressure environment.

[0004] Currently, existing firefighting methods for traditional highland ethnic minority buildings (such as Tibetan, Qiang, and Yi styles) and the numerous buildings constructed with metal-faced sandwich panels (commonly known as sandwich-core corrugated steel panels) all have significant technical limitations. These buildings share common characteristics: the roof is covered with a fire-retardant layer such as iron corrugated steel sheets, and the interior features a wooden suspended ceiling or concealed ceiling structure, forming multiple layers of physical barriers—the outer corrugated steel sheets block water jets, while the middle concealed ceiling or sandwich layer (polystyrene, polyurethane, or rock wool, etc.) further hinders the extinguishing agent from reaching the indoor fire source. Conventional firefighting methods mainly include the following categories:

[0005] 1) Conventional direct-fire extinguishing method using fire hoses. Firefighters spray water into the room from the outside or through door and window openings. This method cannot penetrate fire-retardant coverings such as corrugated steel roofs. The water jet is completely blocked by the covering, and the extinguishing agent cannot reach the fire source. It can only cool the roof surface, and its effect on controlling the fire inside the room is extremely limited. For buildings with a covered roof structure, the water jet cannot even pass through the covered space to reach the room below where the fire is starting; for buildings with sandwich panel corrugated steel roofs, the outer metal panels directly deflect the jet, and the extinguishing agent cannot enter the interior at all.

[0006] 2) Firefighting via water jetting after roof demolition. Firefighters use tools such as fire axes, crowbars, cutting machines, or toothed saws to cut or pry open the corrugated steel roof tiles, exposing the opening before spraying water into the building to extinguish the fire. This method requires firefighters to carry both demolition tools and water jets, which is a heavy burden in the oxygen-deficient environment of high altitudes, involves a long operation time, and generates a large amount of high-temperature smoke during the demolition process, which can easily burn the operators. If the building is a sandwich-core corrugated steel structure, the highly toxic fumes released by the combustion of the core layer during the cutting process further increase the operational danger.

[0007] 3) High-pressure water cannon impact demolition fire extinguishing method. This method uses a high-pressure water cannon to generate a high-pressure jet that impacts the corrugated steel roof tiles, creating a breach in the covering layer and allowing water to be sprayed into the room to extinguish the fire. This method requires a high-pressure fire truck or a large water pump. The equipment is bulky and has stringent requirements for the passage and deployment of fire trucks in the low-pressure environment of high altitudes. It is not suitable for mountainous and pastoral terrain where Tibetan dwellings are relatively scattered and roads are narrow, and it is even less suitable for temporary sandwich-core corrugated steel sheet buildings in remote pastoral areas.

[0008] 4) Throwable fire extinguishers or fire extinguishing bombs. Firefighters manually throw throwable fire extinguishing bottles, canisters, etc., into the room (e.g., a user-friendly throwable fire extinguisher disclosed in announcement number CN112263799B, and a fire-fighting throwable fire extinguishing disc disclosed in announcement number CN110559582B). These extinguishers utilize the extinguishing agent to disperse after the container breaks. However, this method is severely limited by the throwing distance and the size of the opening. Tibetan houses have narrow doors and windows, allowing for throwing only through a few skylights or chimney openings. Furthermore, the fire extinguishers are prone to breaking upon impact with walls during throwing, and the dispersion of the extinguishing agent is uncontrollable, making it difficult to accurately target the fire source. Fire extinguishing bombs, on the other hand, use a launching device or thrower to propel the bomb into the room. The bomb explodes, dispersing the extinguishing agent to extinguish the fire. This method is limited by the portability of the launching device and the impact of the low-pressure environment at high altitudes on the ballistic stability, resulting in a low hit rate. Furthermore, the explosive force of the fire extinguishing bomb may cause secondary damage to the walls of the earth-stone-wood composite structure, and the coverage of the fire extinguishing agent is limited, making it impossible to accurately cover the fire source.

[0009] In summary, existing firefighting methods for Tibetan-style residential fires all have limitations to varying degrees. Some cannot penetrate the corrugated steel roofing layer to reach the fire source inside; others require carrying various heavy equipment for extended periods in the oxygen-deficient environment of the plateau; and still others are limited by the low-pressure environment of the plateau, which affects equipment performance and prevents effective implementation. There is currently no integrated, specialized tool that can simultaneously achieve both puncture and demolition and the delivery of fire extinguishing agents. Summary of the Invention

[0010] The purpose of this invention is to provide a portable barrier fire extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, in order to solve the problem in the prior art where the fire-retardant covering layer such as iron corrugated steel roof tiles forms a physical barrier to the fire extinguishing medium, making it impossible for conventional fire extinguishing methods to effectively penetrate the covering layer and reach the indoor fire source.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, wherein the fire-extinguishing spear is configured as a piercing fire-extinguishing medium inlet connected to the output end of a fire-extinguishing medium supply device. The fire-extinguishing medium inlet includes a hollow conveying rod with an internal fire-extinguishing medium delivery channel, a piercing and breaching component located at the front end of the hollow conveying rod, and a fire-extinguishing medium input interface located at the rear end of the hollow conveying rod, wherein:

[0012] The fire extinguishing medium conveying channel runs through the hollow conveying rod along its axis. The inner wall of the fire extinguishing medium conveying channel is provided with an anti-corrosion and wear-resistant coating. The rear end of the fire extinguishing medium conveying channel is provided with an enlarged diameter interface section.

[0013] The puncture and demolition assembly includes a puncture component and multiple media release ports. The puncture component is a hollow puncture head that is conical in shape and whose interior is connected to the fire extinguishing medium delivery channel. Multiple media release ports are distributed on the outer side wall of the front end of the hollow puncture head.

[0014] The fire extinguishing medium input interface is fixed to the rear end of the hollow conveying rod and connected to the enlarged diameter interface section. The fire extinguishing medium input interface is an axial threaded interface, axial quick-connect interface or axial snap-fit ​​interface adapted to the enlarged diameter interface section. The rear end of the fire extinguishing medium input interface is provided with an annular sealing groove.

[0015] Furthermore, the front end of the hollow piercing head is integrally formed with a quick-release structure, on which a functional head assembly can be detachably installed. This functional head assembly includes a fireproof cover and a hook. The fireproof cover is sleeved on the outside of the hollow piercing head and is threaded or snap-fitted into the quick-release structure.

[0016] Furthermore, the hook body is fixed to the front end of the fireproof cover base, and the hook body is an arc-shaped hook or an eagle-beak hook.

[0017] Furthermore, the outer wall of the hollow conveying rod is provided with scale marks and limit slots along the axial direction, and a limit member is slidably provided on the outer side of the hollow conveying rod. The limit member is an elastic self-locking sleeve, which engages with the limit slot through the elastic engaging part on the inner side.

[0018] Furthermore, the cross-section of the limiting slot is a V-shaped slot, a U-shaped slot, or a trapezoidal slot.

[0019] Furthermore, the hollow delivery rod is composed of multiple hollow pipe sections connected together. A telescopic locking sleeve is provided between two adjacent hollow pipe sections. Each hollow pipe section slides and is locked in place along the axial direction through the telescopic locking sleeve. The inner cavities of each hollow pipe section are interconnected to form a fire extinguishing medium delivery channel.

[0020] Furthermore, a one-way backflow prevention valve is installed on the fire extinguishing medium delivery channel. The one-way backflow prevention valve is used to automatically block the fire extinguishing medium delivery channel when the fire extinguishing medium supply stops, preventing high-temperature smoke, sparks, or debris from flowing back into the fire extinguishing medium delivery channel along the inside of the hollow delivery rod, and at the same time preventing residual fire extinguishing medium from continuing to drip after the pressure supply stops, thus avoiding waste and environmental pollution.

[0021] Furthermore, the hollow conveying rod body is a coaxial double-layer rod structure, which includes an inner rod channel and an outer rod channel. The inner rod channel is a fire extinguishing medium conveying channel, and the outer rod channel is located outside the inner rod channel and is a smoke exhaust channel. The rear end of the smoke exhaust channel is equipped with a smoke exhaust interface.

[0022] Furthermore, the side wall of the hollow puncture head is provided with a flue gas suction port that communicates with the outer rod channel. The smoke exhaust channel is connected to the outside through the flue gas suction port, and a flue gas suction fan can be detachably connected to the rear end of the smoke exhaust channel.

[0023] Compared with existing technologies, this invention provides a portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau. It integrates piercing and demolition functions with fire-extinguishing medium delivery into a single shaft. Firefighters only need to carry a single tool to complete continuous demolition and fire-extinguishing operations, eliminating the need to alternate between multiple pieces of equipment in the oxygen-deficient environment of the plateau. This significantly reduces the physical exertion and working time of firefighters. The entire spear has a portable structure, facilitating its carrying and maneuverability in complex terrain and narrow alleyways on the plateau. Furthermore, the spear can be quickly fitted with different functional head components as needed, also possessing the hooking and demolition function of a fire hook, further expanding the tool's applicable scenarios and on-site response capabilities. This fire-extinguishing spear is not only suitable for Tibetan-style buildings but also for other traditional plateau ethnic buildings with wooden ceilings or enclosed roofs, such as Qiang and Yi styles. It is also suitable for temporary buildings and sheds made of corrugated steel sheets widely used in plateau regions. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram illustrating the practical application of Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Hollow conveying rod body; 101. Hollow pipe section; 102. Telescopic locking sleeve; 103. Inner rod channel; 104. Outer rod channel; 2. Puncture and demolition assembly; 201. Hollow puncture head; 202. Medium release port; 3. Fire extinguishing medium input interface; 4. Quick-install structure; 5. Fireproof cover; 6. Hook body; 7. Limiting component. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] As attached Figure 1 To be continued Figure 2 As shown:

[0034] Example 1:

[0035] This invention provides a portable barrier fire extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau. The barrier fire extinguishing spear is configured as a piercing fire extinguishing medium inlet connected to the output end of a fire extinguishing medium supply device. The fire extinguishing medium inlet includes a hollow conveying rod 1 with an internal fire extinguishing medium delivery channel, a piercing and breaking component 2 located at the front end of the hollow conveying rod 1, and a fire extinguishing medium input interface 3 located at the rear end of the hollow conveying rod 1.

[0036] In one embodiment of the present invention, the fire extinguishing medium conveying channel extends axially along the hollow conveying rod 1, the inner wall of the fire extinguishing medium conveying channel is provided with an anti-corrosion and wear-resistant coating, and the rear end of the fire extinguishing medium conveying channel is provided with an enlarged diameter interface section.

[0037] In one embodiment of the present invention, the puncture and demolition assembly 2 includes a puncture member and a plurality of media release ports 202. The puncture member is a hollow puncture head 201 that is conical in shape and whose interior is connected to the fire extinguishing medium delivery channel. The outer side wall of the front end of the hollow puncture head 201 is provided with a plurality of media release ports 202.

[0038] In one embodiment of the present invention, the fire extinguishing medium input interface 3 is fixed to the rear end of the hollow conveying rod body 1 and connected to the enlarged diameter interface section. The fire extinguishing medium input interface 3 is an axial threaded interface, an axial quick-connect interface or an axial snap-fit ​​interface adapted to the enlarged diameter interface section. The rear end of the fire extinguishing medium input interface 3 is provided with an annular sealing groove.

[0039] Working Principle: Example 1 integrates piercing and demolition with fire extinguishing medium delivery. The conical structure of the hollow piercing head 201 pierces the fire-retardant covering layer, such as iron corrugated steel sheets, allowing the medium release port 202 at the front end of the hollow delivery rod 1 to pass through the covering layer and enter the indoor space. The fire extinguishing medium enters the fire extinguishing medium delivery channel through the fire extinguishing medium input interface 3, and is axially transported along the interior of the hollow delivery rod 1 to the front end. It is then released from the hollow piercing head 201 through the medium release port 202 at multiple angles into the space below the covering layer, directly acting on the indoor fire source area. The enlarged diameter interface section ensures a smooth transition between the fire extinguishing medium input interface 3 and the fire extinguishing medium delivery channel, while the annular sealing groove ensures a tight seal when connected to the output end of the fire extinguishing medium supply device. When in use, firefighters hold the hollow delivery rod 1, aim the conical piercing head at the roof covering layer, and forcefully pierce it. The extinguishing medium enters from the input interface, is transported to the front end through the internal channel of the hollow delivery rod 1, and is released from the medium release port 202 into the space below the covering layer at multiple angles, achieving precise blocking and extinguishing of the fire by penetrating the covering layer.

[0040] As attached Figure 3 As shown:

[0041] Example 2:

[0042] This embodiment is basically the same as the previous embodiment, except that the front end of the hollow piercing head 201 is integrally formed with a quick-release structure 4. A functional head assembly is detachably installed on the quick-release structure 4. The functional head assembly includes a fireproof cover 5 and a hook body 6. The fireproof cover 5 is sleeved on the outside of the hollow piercing head 201 and is threaded or snapped into the quick-release structure 4. The fireproof cover 5 is used to cover the outside of the hollow piercing head 201 in non-fire extinguishing conditions to protect the conical piercing head and prevent it from being damaged by collision during storage or transportation. At the same time, when the functional head assembly is installed, the fire extinguishing spear can be switched to the function of a fire hook, making it a multi-purpose device.

[0043] In one embodiment of the present invention, the hook body 6 is fixed to the front end of the fireproof cover base 5, and the hook body 6 is an arc-shaped hook or an eagle-beak hook. The hook body 6 is used to hook and pull the roof covering layer or obstacles to realize demolition and hooking operations.

[0044] In one embodiment of the present invention, the outer wall of the hollow conveying rod 1 is provided with scale marks and a limiting groove along the axial direction. A limiting member 7 is slidably provided on the outer side of the hollow conveying rod 1. The limiting member 7 is an elastic self-locking sleeve, which engages with the limiting groove through an elastic engaging part on its inner side. The cross-section of the limiting groove is a V-shaped groove, a U-shaped groove, or a trapezoidal groove.

[0045] Working Principle: Example 2 provides a barrier fire spear that combines the functions of breaching hook and pulling with puncture depth control. It utilizes a quick-release structure 4 to allow for rapid replacement of the functional head assembly. In puncture mode, the spear can be used as a fire extinguishing medium delivery tool; in hook mode, it can be used as a fire hook, offering multiple uses and reducing the number of tools firefighters need to carry in cold environments. In use, when hooking roof corrugated steel sheets or clearing collapsed obstacles, the functional head assembly is installed at the front end of the hollow puncture head 201 via the quick-release structure 4. The fireproof cover 5 is fitted over the puncture head to provide heat insulation and prevent damage. The hook 6 hooks onto the edge of the covering layer or obstacle and pulls it. When puncture is required for fire extinguishing, the functional head assembly can be disassembled to restore the puncture state. After the limiting component 7 slides along the limiting slot to the desired position, it is locked in place by the elastic engaging part of the elastic self-locking sleeve engaging with the limiting slot. This limits the depth to which the piercing head penetrates the roof covering layer, preventing damage to indoor components from excessive penetration or direct impact of the medium on flammable materials that could trigger reignition. Simultaneously, the scale markings clearly indicate the piercing depth corresponding to the current limiting position. The push-to-unlock design of the elastic self-locking sleeve allows for position adjustment of the limiting component 7 without additional tools, meeting the needs of rapid operation in high-altitude environments.

[0046] As attached Figure 4 As shown:

[0047] Example 3:

[0048] This embodiment is basically the same as the previous embodiment, except that the hollow conveying rod 1 is composed of multiple hollow tube sections 101 connected together. A telescopic locking sleeve 102 is provided between two adjacent hollow tube sections 101. Each hollow tube section 101 slides and is locked in place along the axial direction through the telescopic locking sleeve 102. The inner cavities of each hollow tube section 101 are interconnected to form a fire extinguishing medium conveying channel.

[0049] In one embodiment of the present invention, a one-way backflow prevention valve is provided on the fire extinguishing medium delivery channel. After the pressure supply is stopped, the one-way backflow prevention valve automatically closes to prevent high-temperature smoke, sparks, or debris from flowing back into the fire extinguishing medium delivery channel along the hollow delivery rod 1, thus avoiding equipment blockage and high-temperature damage, and preventing residual fire extinguishing medium from dripping and being wasted.

[0050] Working Principle: Example 3 provides a telescopic and adjustable fire extinguishing spear with anti-backflow function. It achieves free adjustment of the length of the hollow delivery rod 1 through multiple hollow tube sections 101 and a telescopic locking sleeve 102, allowing the fire extinguishing spear to adapt to different roof heights and operating distances. When each hollow tube section 101 slides, the telescopic locking sleeve 102 maintains the coaxiality between adjacent sections and ensures the internal cavities are interconnected. After adjustment, it locks in place, forming a complete fire extinguishing medium delivery channel. In use, firefighters pull out or retract the corresponding section according to the actual roof height and standing position, tightening the telescopic locking sleeve 102 to lock the length. There is no need to carry multiple spare rods of different lengths; a single fire extinguishing spear can meet the operational needs of different roof heights and operating distances in Tibetan dwellings, significantly reducing the weight carried on the plateau. The overall length is greatly shortened after the multiple tube sections are retracted, making it easier for firefighters to carry and maneuver in complex terrain and narrow alleyways on the plateau.

[0051] As attached Figure 5 As shown:

[0052] Example 4:

[0053] This embodiment is basically the same as the previous embodiment, except that the hollow conveying rod 1 is a coaxial double-layer rod structure, which includes an inner rod channel 103 and an outer rod channel 104. The inner rod channel 103 is a fire extinguishing medium conveying channel, and the outer rod channel 104 is located outside the inner rod channel 103 and is a smoke exhaust channel. The rear end of the smoke exhaust channel is provided with a smoke exhaust interface (not shown in the figure).

[0054] In one embodiment of the present invention, the side wall of the hollow piercing head 201 is provided with a flue gas suction port that communicates with the outer rod channel 104. The smoke exhaust channel is connected to the outside through the flue gas suction port, and a flue gas suction fan (not shown in the figure) is detachably connected to the rear end of the smoke exhaust channel.

[0055] Working principle: Because Tibetan dwellings are made of a mixture of earth, stone and wood, with few doors and windows, thick walls and roofs covered with corrugated steel tiles, a high-temperature and high-pressure closed smoke accumulation environment is formed inside after a fire. If the indoor pressure is too high when the extinguishing agent is injected, the water vapor may instantly vaporize and expand, which may intensify the combustion or cause high-temperature smoke to splash. Therefore, Example 4 provides a barrier fire extinguishing spear with smoke exhaust function. It integrates the fire extinguishing agent delivery channel and the smoke exhaust channel into the same rod body through a coaxial double-layer rod structure, so that a single puncture can simultaneously establish the fire extinguishing agent injection channel and the smoke exhaust channel. After puncture, the high-temperature indoor smoke enters the inner cavity of the hollow puncture head 201 through the medium release port 202 or the dedicated smoke exhaust port, and then enters the outer rod channel 104 (smoke exhaust channel) through the smoke suction port. It is then transported to the rear end along the annular gap and finally discharged to the outdoor atmosphere through the smoke exhaust interface and the smoke extraction fan, realizing the active extraction and discharge of the high-temperature indoor smoke. The extinguishing medium enters the inner rod channel 103 through the extinguishing medium input interface 3, and is transported axially along the inner rod channel 103 to the front end. It is then released through the medium release port 202 inside the hollow puncture head 201 into the space below the covering layer, acting on the indoor fire source area. The detachable docking design of the smoke exhaust channel allows the smoke extraction fan to be quickly disassembled and separated when not in smoke exhaust mode, reducing the weight of the fire extinguishing spear.

[0056] Example 5:

[0057] This embodiment further defines the specific application methods of the fire-extinguishing spear in various high-altitude building scenarios.

[0058] 1) Application in buildings with wooden suspended ceilings / concealed ceilings:

[0059] Taking traditional Tibetan, Qiang, and Yi ethnic minority dwellings as examples, the roof structure of such buildings, from the outside in, consists of a corrugated steel sheet covering layer, an air insulation layer (cabinet), a wooden ceiling panel, and the interior living space. In the event of a fire, the fire often spreads first within the cabin above the ceiling, then burns through the ceiling panel and falls into the room. When using this fire extinguishing spear, firefighters, based on their experience with the roof height and building structure, slide the limiting component 7 on the outer wall of the hollow delivery rod 1 to the corresponding scale position (this scale corresponds to the total thickness value of "corrugated steel sheet + cabin height + ceiling panel thickness"), and then vertically insert the hollow piercing head 201 into the roof. After the limiting component 7 abuts against the outer surface of the roof, the hollow piercing head 201 precisely penetrates the corrugated steel sheet and the cabin space, and the medium release port 202 passes through the wooden ceiling panel and enters the interior space. At this point, the extinguishing medium is introduced, bypassing the obstruction of the cabin space and directly released into the indoor fire area, achieving precise cross-floor fire extinguishing. If the fire is still inside the confined space and has not burned through the ceiling, firefighters can reduce the depth of penetration, keeping the medium release port 202 inside the confined space, and directly extinguish the fire source inside the confined space.

[0060] 2) Application of metal-faced sandwich panels (cotton-filled color steel panels) in buildings:

[0061] In high-altitude areas, sandwich-filled corrugated steel panels are widely used to construct temporary housing, warehouses, and sheds. Their structure consists of an upper metal panel, a middle core filling layer (polystyrene / polyurethane / rock wool, etc.), and a lower metal panel. During a fire, the fire source is located within the space enclosed by the sandwich panels, and the outer metal panel completely deflects the conventional fire jet. When using this fire extinguishing spear, the firefighter holds the hollow delivery rod 1 and vertically presses the conical tip of the hollow piercing head 201 against the outer metal panel of the sandwich panel, applying force and rotating it forward. The conical piercing head first creates a piercing hole in the outer metal panel, then penetrates the core filling layer (if the core is rigid rock wool, the axial compressive force of the conical surface can break and penetrate it; if the core is soft polystyrene foam, the piercing head directly squeezes through), and finally penetrates the lower metal panel. The medium release port 202 enters the space enclosed by the sandwich panel. After the extinguishing medium is introduced, it is released into the internal space at multiple angles through the medium release port 202, directly acting on the fire source. If the core layer itself is already burning (such as when the polystyrene core layer melts and burns due to heat), the hollow piercing head 201 can be inserted into the core layer first, and the fire extinguishing medium can be released into the core layer through the medium release port 202 to block and extinguish the fire, preventing the fire from spreading along the core layer.

[0062] 3) Coordinated operation of smoke extraction and fire suppression in different scenarios:

[0063] For buildings with enclosed roofs and sandwich panel buildings, a large amount of high-temperature toxic smoke accumulates inside during a fire (the sandwich panel releases highly toxic gases such as hydrogen cyanide and carbon monoxide when it burns). When using the coaxial double-layer rod structure of Example 4, the high-temperature smoke inside the enclosed roof or sandwich panel can be extracted first through the outer rod channel 104 and the smoke extraction fan to reduce internal pressure and temperature. Then, the extinguishing medium is injected through the inner rod channel 103. Alternatively, smoke extraction and fire extinguishing can be carried out simultaneously. Continuous extraction through the smoke extraction channel facilitates the diffusion and coverage of the extinguishing medium in the fire source area, improving fire extinguishing efficiency. A single puncture can simultaneously complete smoke extraction and pressure relief and extinguishing medium injection, avoiding excessive damage to the corrugated steel sheet or sandwich panel roof caused by multiple punctures, significantly shortening the working time of firefighters in toxic smoke environments, and reducing safety risks.

[0064] It should be noted that smoke extraction and extinguishing agent injection are independent of each other, and there is no time limit between them. Firefighters can freely choose to perform smoke extraction before firefighting, firefighting before smoke extraction, or both simultaneously, depending on the actual situation at the fire scene. The coaxial double-layer rod structure allows smoke extraction and firefighting to be carried out simultaneously without interference. The inner rod channel 103 is dedicated to delivering the extinguishing agent, while the outer rod channel 104 is dedicated to exhausting high-temperature smoke. A single puncture can simultaneously achieve smoke extraction and depressurization and extinguishing agent injection, avoiding excessive damage to the roof structure from multiple punctures, while also shortening the firefighters' work time and reducing safety risks.

[0065] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, wherein the fire-extinguishing spear is configured as a piercing fire-extinguishing medium inlet connected to the output end of a fire-extinguishing medium supply device, the fire-extinguishing medium inlet comprising a hollow conveying rod (1) having an internal fire-extinguishing medium delivery channel, a piercing and breaking component (2) located at the front end of the hollow conveying rod (1), and a fire-extinguishing medium input interface (3) located at the rear end of the hollow conveying rod (1), characterized in that: The fire extinguishing medium conveying channel runs through the hollow conveying rod (1) axially. The inner wall of the fire extinguishing medium conveying channel is provided with an anti-corrosion and wear-resistant coating. The rear end of the fire extinguishing medium conveying channel is provided with an enlarged diameter interface section. The puncture and demolition assembly (2) includes a puncture component and multiple media release ports (202). The puncture component is a hollow puncture head (201) that is conical in shape and whose interior is connected to the fire extinguishing medium delivery channel. Multiple media release ports (202) are distributed on the outer side wall of the front end of the hollow puncture head (201). The fire extinguishing medium input interface (3) is fixed to the rear end of the hollow conveying rod (1) and connected to the enlarged diameter interface section. The fire extinguishing medium input interface (3) is an axial threaded interface, axial quick-connect interface or axial snap-fit ​​interface adapted to the enlarged diameter interface section. The rear end of the fire extinguishing medium input interface (3) is provided with an annular sealing groove.

2. The portable fire-extinguishing spear for use in Tibetan-style buildings on the plateau, as described in claim 1, is characterized in that... The front end of the hollow piercing head (201) is integrally formed with a quick-release structure (4). A functional head assembly is detachably installed on the quick-release structure (4). The functional head assembly includes a fireproof cover (5) and a hook (6). The fireproof cover (5) is sleeved on the outside of the hollow piercing head (201) and is threaded or snapped into the quick-release structure (4).

3. A portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, as described in claim 2, is characterized in that... The hook (6) is fixed to the front end of the fireproof cover (5), and the hook (6) is an arc-shaped hook or an eagle beak hook.

4. The portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, as described in claim 1, is characterized in that... The outer wall of the hollow conveying rod (1) is provided with scale marks and limit slots along the axial direction. A limit member (7) is slidably provided on the outer side of the hollow conveying rod (1). The limit member (7) is an elastic self-locking sleeve. The elastic self-locking sleeve cooperates with the limit slot through the elastic engaging part on the inner side.

5. A portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, as described in claim 4, is characterized in that... The cross-section of the limiting slot is a V-shaped slot, a U-shaped slot, or a trapezoidal slot.

6. A portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, as described in claim 1, is characterized in that... The hollow conveying rod (1) is composed of multiple hollow pipe sections (101) connected together. A telescopic locking sleeve (102) is provided between two adjacent hollow pipe sections (101). Each hollow pipe section (101) slides and locks itself along the axial direction through the telescopic locking sleeve (102). The inner cavities of each hollow pipe section (101) are interconnected to form a fire extinguishing medium conveying channel.

7. A portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, as described in claim 1, is characterized in that... The fire extinguishing medium delivery channel is equipped with a one-way anti-backflow valve.

8. A portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, as described in claim 1, is characterized in that... The hollow conveying rod (1) is a coaxial double-layer rod structure, which includes an inner rod channel (103) and an outer rod channel (104). The inner rod channel (103) is a fire extinguishing medium conveying channel, and the outer rod channel (104) is located outside the inner rod channel (103) and is a smoke exhaust channel. The rear end of the smoke exhaust channel is provided with a smoke exhaust interface.

9. A portable fire-extinguishing spear specifically designed for fires in Tibetan-style buildings on the plateau, as described in claim 1, is characterized in that... The hollow piercing head (201) has a flue gas suction port on its side wall that is connected to the outer rod channel (104). The exhaust channel is connected to the outside through the flue gas suction port. A flue gas suction fan can be detachably connected to the rear end of the exhaust channel.

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