Fragment-free fire extinguishing bomb
By designing a multi-layered structure for the fragment-free fire extinguishing bomb, the problem of fragments flying during use is solved, achieving high safety and efficient fire extinguishing effect, suitable for fire safety in high-rise buildings.
Patent Information
- Application Number
- CN202210590821.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-27
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2042-05-27
AI Technical Summary
Existing fire extinguishing bombs are prone to generating flying fragments during use, posing safety risks, especially when used in densely populated high-rise buildings.
A fragment-free fire extinguishing projectile is designed, employing a multi-layered fire extinguishing warhead structure, including an outer shell and an inner shell. The directional release of the extinguishing agent is achieved through a hinged structure and a switching structure, avoiding fragment splashing and ensuring the safety and reliability of the fire extinguishing process.
It effectively prevents the generation of fragments, improves the safety and reliability of the fire extinguishing process, and ensures the fire extinguishing effect while reducing potential dangers to personnel.
Smart Images
Figure CN114870301B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fire protection, and more particularly to a non-fragmented fire extinguishing bomb. Background Technology
[0002] Firefighting, or fire suppression, is a field closely related to production and daily life. Once a fire breaks out, it can cause enormous losses to people's property and lives. Current common firefighting methods involve using fire extinguishers and fans. However, these tools must be manually carried into the fire scene, which is highly dangerous and slow.
[0003] Furthermore, with the rapid development of my country's economic infrastructure, the height and density of high-rise buildings in major and medium-sized cities are constantly increasing, making fire safety issues in high-rise buildings increasingly prominent. The consequences of a fire in a high-rise building would be unimaginable. Firefighting in high-rise buildings has become a severe challenge for cities during their development, making the research and development of effective fire-fighting window-breaking extinguishing bombs an urgent priority. However, in high-rise firefighting, traditional fire-fighting bombs pose additional safety risks when used in densely populated areas due to the potential for fragmentation. Summary of the Invention
[0004] The purpose of this invention is to provide a fragment-free fire extinguishing bomb, which solves the problem of fire extinguishing bombs easily generating flying fragments.
[0005] To achieve the above-mentioned objectives, the present invention provides a fragmentless fire extinguishing projectile, comprising: a warhead, a fire extinguishing warhead, a propulsion device, a window-breaking device, and a control unit;
[0006] The warhead and the propulsion device are located at opposite ends of the fire extinguishing warhead, and the propulsion device is detachable from the fire extinguishing warhead.
[0007] The window-breaking device is installed at the end of the warhead furthest from the fire-extinguishing warhead.
[0008] The control unit is located inside the warhead;
[0009] The fire extinguishing warhead includes: an outer shell, an inner shell disposed within the outer shell, and a fire extinguishing agent release device disposed within the inner shell;
[0010] The outer shell is a hollow, regular column, comprising: two symmetrically arranged outer shell parts, at least one hinge structure, and at least one switch structure;
[0011] One end of each of the two outer shell portions is connected to the hinge structure, so that the two outer shell portions can rotate around the hinge structure;
[0012] The other ends of the two outer shell parts are respectively connected to the switch structure for controlling the opening and closing of the two outer shell parts;
[0013] The inner shell is a hollow column with multiple through holes spaced apart on its sidewalls.
[0014] The extinguishing agent release device is a compressed gas explosion-type fire extinguishing device.
[0015] According to one aspect of the present invention, the hinge structure includes: a first rotating hinge, a second rotating hinge, a hinge pivot for connecting the first rotating hinge and the second rotating hinge, and a torsion spring sleeved on the hinge pivot;
[0016] When the two outer shell parts are closed, the torsion spring is in a compressed state, abutting against the first rotating hinge and the second rotating hinge.
[0017] According to one aspect of the present invention, the switch structure includes: a switch base and a switch connector connected to the switch base;
[0018] One end of the switch base is fixedly connected to the side of one of the housing parts, and one end of the switch connector is rotatably connected to the side of the other housing part.
[0019] When the two outer housing parts are closed, the other end of the switch connector engages with the switch base for locking.
[0020] According to one aspect of the present invention, the switch base includes: a hollow tubular body, a first elastic member disposed in the tubular body, a limiting structure disposed on the side wall of the tubular body, and a vent hole disposed on the side wall of the tubular body and penetrating the side wall.
[0021] One end of the switch connector is provided with a locking connector;
[0022] The locking connector is provided with a matching locking structure that cooperates with the limiting structure;
[0023] When the matching locking structure is connected to the limiting structure, the locking connector is abutted against the first elastic member, and the first elastic member is in a compressed state.
[0024] The vent and the first elastic element are located on the same side of the locking connector.
[0025] According to one aspect of the present invention, the limiting structure includes: a receiving cavity, a second elastic member disposed within the receiving cavity, and a movable limiting member slidable along the receiving cavity;
[0026] The accommodating cavity is connected to the tubular body;
[0027] The shape of the movable limiting member is configured to match the opening shape of the receiving cavity;
[0028] One end of the movable limiting member abuts against the second elastic member, and the other end is configured to match the shape of the inner wall of the tubular body.
[0029] The end of the movable limiting member away from the second elastic member is provided with a limiting protrusion that is connected to the matching locking structure;
[0030] When the limiting protrusion is connected to the matching locking structure, the locking connector partially obscures the end face of the movable limiting member.
[0031] According to one aspect of the invention, the inner housing is provided with a hollow cylinder, the opposite ends of which are fixedly connected to the axial ends of one of the outer housing portions; or,
[0032] The inner shell is provided with multiple parts, each of which is a hollow cylinder;
[0033] When the two outer shell portions are closed, a plurality of inner shells are arranged sequentially along the axial direction of the outer shells and are respectively connected to different outer shell portions; or,
[0034] The inner shell is provided with multiple parts, each of which is a hollow semi-cylinder;
[0035] The inner housing is arranged on the two outer housing portions respectively.
[0036] According to one aspect of the invention, if both outer shell portions are connected to the inner shell, the number or size of the inner shells connected to one of the outer shell portions is less than the number or size of the inner shells connected to the other outer shell portion.
[0037] According to one aspect of the present invention, the extinguishing agent release device comprises: a hollow cylinder with openings at both ends, a front cover for connecting to the front end of the hollow cylinder, a rear cover for connecting to the rear end of the hollow cylinder, a first connecting shaft disposed on the front cover, a second connecting shaft disposed on the rear cover, and a heater.
[0038] The hollow cylinder's outer shape matches the shape of the inner shell;
[0039] One end of the heater is detachably mounted on the front cover, and the other end extends into the hollow cylinder.
[0040] The first connecting shaft is a hollow shaft, and the heater's wires are led out through the hollow part of the first connecting shaft.
[0041] According to one aspect of the invention, the through hole is provided on the side of the inner housing opposite to the outer housing portion to which it is connected;
[0042] Multiple grooves are provided on the outer side of the hollow cylinder, opposite to the side of the inner shell where the through hole is provided;
[0043] The bottom of the groove is provided with a groove.
[0044] According to one aspect of the invention, the window-breaking device is a pyramidal structure;
[0045] The window-breaking devices are arranged in a regular, spaced pattern on the warhead.
[0046] According to one aspect of the present invention, the fire extinguishing warhead employs a multi-layered, nested design, ensuring structural safety in its non-use state while effectively preventing fragmentation during fire extinguishing. This results in high reliability and high safety. Specifically, in its non-use state, the outer shell effectively protects the internal structure, while in its use state, it automatically opens to activate the internal fire extinguishing device. Furthermore, the inner shell effectively prevents fragmentation during the release of the extinguishing agent, ensuring safe operation during the fire extinguishing process. Simultaneously, the regularly arranged through-holes on the inner shell further direct the released extinguishing agent, resulting in a more consistent spray pattern and improved fire extinguishing effectiveness. Attached Figure Description
[0047] Figure 1 This is a schematic diagram illustrating the structure of a fragmentless fire extinguishing bomb according to one embodiment of the present invention;
[0048] Figure 2 This is a schematic diagram showing the internal structure of a fire extinguishing warhead according to one embodiment of the present invention;
[0049] Figure 3 This is a schematic cross-sectional view of a fire-extinguishing warhead according to one embodiment of the present invention;
[0050] Figure 4 It is a schematic representation Figure 3 A magnified view of position A in the middle;
[0051] Figure 5 This is a schematic diagram showing the opening structure of a fire extinguishing warhead according to one embodiment of the present invention;
[0052] Figure 6 It is a schematic representation Figure 5 Cross-sectional view;
[0053] Figure 7 This is a schematic diagram showing the opening structure of the fire extinguishing warhead according to another embodiment of the present invention;
[0054] Figure 8 It is a schematic representation Figure 7 Cross-sectional view;
[0055] Figure 9 This is a schematic diagram showing the opening structure of the fire extinguishing warhead according to another embodiment of the present invention;
[0056] Figure 10 It is a schematic representation Figure 9 Cross-sectional view;
[0057] Figure 11 This is a schematic diagram illustrating the structure of a fire extinguishing agent release device according to one embodiment of the present invention;
[0058] Figure 12 This is a schematic cross-sectional view of a fire extinguishing agent release device according to one embodiment of the present invention;
[0059] Figure 13 This is a schematic cross-sectional view of a fire extinguishing agent release device according to another embodiment of the present invention. Detailed Implementation
[0060] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.
[0061] In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" express orientations or positional relationships based on the orientations or positional relationships shown in the relevant drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present invention.
[0062] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the embodiments of the present invention are not limited to the following embodiments.
[0063] like Figure 1As shown, according to one embodiment of the present invention, a fragmentless fire extinguishing grenade includes: a warhead 1, a fire extinguishing warhead 2, a propulsion device 3, a window-breaking device 4, and a control unit. In this embodiment, the warhead 1 and the propulsion device 3 are located at opposite ends of the fire extinguishing warhead 2, and the propulsion device 3 is detachably disposed from the fire extinguishing warhead 2; the window-breaking device 4 is installed at the end of the warhead 1 away from the fire extinguishing warhead 2; the control unit is disposed inside the warhead 1. In this embodiment, the fire extinguishing warhead 2 and the propulsion device 3 are respectively connected to the control unit installed inside the warhead 1 to realize the flight control of the fire extinguishing grenade and to perform the fire extinguishing action after reaching the fire point.
[0064] Combination Figure 1 , Figure 2 and Figure 3 As shown, according to one embodiment of the present invention, the fire extinguishing warhead 2 includes: an outer shell 21, an inner shell 22 disposed within the outer shell 21, and a fire extinguishing agent release device 23 disposed within the inner shell 22. In this embodiment, the outer shell 21 is a hollow, regular column, comprising: two symmetrically arranged outer shell portions 211, a hinge structure 212, and a switch structure 213. In this embodiment, one end of each of the two outer shell portions 211 is connected to the hinge structure 212, allowing the two outer shell portions 211 to rotate via the hinge structure 212; the other end of each of the two outer shell portions 211 is connected to the switch structure 213, for controlling the opening and closing of the two outer shell portions 211. In this embodiment, the inner shell 22 is a hollow column, with a plurality of through holes 221 spaced apart on its sidewalls. In this embodiment, the fire extinguishing agent release device 23 is a compressed gas explosion-type fire extinguishing device.
[0065] In this embodiment, the warhead 1 and the propulsion device 4 are interconnected with one outer shell portion 211 of the outer shell 21 via a shaft, but not with the other outer shell portion 211. This ensures that when the outer shell portions 211 are separated, they are not affected by the warhead 1 and the propulsion device 4, guaranteeing the stability of this design. Simultaneously, this method effectively increases the weight of one outer shell portion 211, ensuring the stability of the entire fire extinguishing device when the other outer shell portion 211 is activated.
[0066] Through the above-described design, the fire extinguishing warhead of the present invention, by employing a multi-layered, nested arrangement, ensures structural safety in its non-use state and effectively prevents fragmentation during fire extinguishing, thus giving the invention high reliability and high safety. Specifically, in the non-use state, the outer shell effectively protects the internal structure, while in the use state, it automatically opens to activate the internal fire extinguishing device. Furthermore, the inner shell 22 effectively prevents fragmentation from splashing when the fire extinguishing agent is released by the fire extinguishing agent release device 23, ensuring safe operation during the fire extinguishing process. Simultaneously, the regularly arranged through holes 221 on the inner shell further allow for directional adjustment of the released fire extinguishing agent, resulting in a more regular spray and improved fire extinguishing effect.
[0067] like Figure 3 As shown, according to one embodiment of the present invention, the hinge structure 212 includes: a first rotating hinge 2121, a second rotating hinge 2122, a hinge shaft 2123 for connecting the first rotating hinge 2121 and the second rotating hinge 2122, and a torsion spring sleeved on the hinge shaft 2123. In this embodiment, the hinge structure 212 can be installed on the inner side of the outer shell portion 211 or on the outer side of the outer shell portion 211. Taking the arrangement on the outer side of the outer shell portion 211 as an example, the first rotating hinge 2121 and the second rotating hinge 2122 are respectively fixedly connected to the adjacent sides of the two openable and closable outer shell portions 211. This allows the two outer shell sections 211 to open and close via the hinge shaft 2123 of the hinge structure 212. When the two outer shell sections 211 are closed, they form the overall shape of the outer shell, providing a sealed protection for the internal structure. When the two outer shell sections 211 are open, the torsion spring on the hinge shaft 2123 allows one of the outer shell sections 211 to rotate away from the other. In this embodiment, the hinge structure 212 can drive the outer shell sections 211 to open to an angle of 180° or more. Therefore, when fully opened, the two outer shell sections 211 form a side-by-side semi-circular shell support structure, achieving stable support and preventing obstruction of subsequent fire extinguishing agent spray. In this embodiment, an angle limiting structure may also be provided on the first rotating hinge 2121 or the second rotating hinge 2122. This structure may be implemented by means of a fixed protrusion structure or a structure with an adjustable position to achieve control of the unfolding angle (e.g., a limiting bolt), etc., to limit the maximum rotation angle of the first rotating hinge 2121 and the second rotating hinge 2122 and avoid excessive rotation.
[0068] In this embodiment, in order to achieve the full deployment of the torsion spring, when the two outer shell parts 211 are closed, the torsion spring is in a compressed state, abutting against the first rotating hinge 2121 and the second rotating hinge 2122.
[0069] In this embodiment, multiple hinge structures 212 can be provided on the outer shell 21 along the axial direction of the outer shell 21 to achieve stable unfolding of the outer shell 21 and improve the stability of the invention in use.
[0070] Combination Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the switch structure 213 includes: a switch base 2131 and a switch connector 2132 connected to the switch base 2131. In this embodiment, one end of the switch base 2131 is fixedly connected to the side of a housing portion 211, and one end of the switch connector 2132 is rotatably connected to the side of another housing portion 211; when the two housing portions 211 are closed, the other end of the switch connector 2132 engages with the switch base 2131 for locking. In this embodiment, the switch structure 213 is disposed inside the housing portion 21.
[0071] Combination Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the switch base 2131 includes: a hollow tubular body 2131a, a first elastic member 2131b disposed in the tubular body 2131a, a limiting structure 2131c disposed on the side wall of the tubular body 2131a, and a vent hole 2131d disposed on and penetrating the side wall of the tubular body 2131a. In this embodiment, a locking connector 2132a is provided at one end of the switch connector 2132, and the switch connector 2132 can slide into the tubular body 2131a relative to the tubular body 2131a to realize the mutual connection between the switch connector 2132 and the switch base 2131. When separated, the switch connector 2132 slides in the opposite direction and disengages from the switch base 2131 to realize the switching function of the switch structure 213.
[0072] In this embodiment, the locking connector 2132a is provided with a matching locking structure 2132b that cooperates with the limiting structure 2131c. When the matching locking structure 2132b is connected to the limiting structure 2131c, the locking connector 2132a abuts against the first elastic member 2131b, and the first elastic member 2131b is in a compressed state. In this embodiment, the vent 2131d and the first elastic member 2131b are located on the same side of the locking connector 2132a.
[0073] In this embodiment, the tubular body 2131a is a hollow tube with one end open. Its closed end is fixedly connected to the side of the outer shell part 211, while the open end faces the other outer shell part 211. This allows the locking connector 2132a provided at the end of the switch connector 2132 to extend into the tubular body 2131a when the two outer shell parts 211 are fastened together, so as to realize the connection between the locking connector 2132a and the limiting structure 2131c in the tubular body 2131a.
[0074] In this embodiment, the first elastic element 2132b is a compression spring, with its two opposite ends abutting against the tubular body 2131a and the locking connector 2132a respectively, so as to achieve elastic support for the switch connector 2132 and to pop out the switch connector 2132 when it is opened, ensuring timely and fast opening process. In addition, it can also effectively increase the initial speed of opening the outer shell 211 and accelerate the unfolding of the outer shell 21.
[0075] In this embodiment, the diameter of the locking connector 2132a is the same as the inner diameter of the tubular body 2131a. Therefore, while allowing sliding, it also seals and divides the tubular body 2131a, separating the chamber containing the first elastic member 2131b from the other side. In this embodiment, to improve the division of the internal space of the tubular body 2131a by the locking connector 2132a, a sealing structure such as a sealing ring can be provided on the outer surface of the locking connector 2132a to improve its sealing performance. This arrangement is beneficial for ensuring the opening of the locking connector 2132a when there are changes in air pressure.
[0076] In this embodiment, the switch connector 2132 further includes a connecting rod body; a locking connector 2132a is disposed at one end of the connecting rod body, and the other end of the connecting rod body is connected to another outer casing portion 211 via a rotating connecting seat. In this embodiment, the diameter of the portion of the connecting rod body extending into the tubular body 2131a is consistent with the diameter of the locking connector 2132a to ensure the smooth opening and disengagement of the switch connector 2132.
[0077] like Figure 4As shown, according to one embodiment of the present invention, the limiting structure 2131c includes: a receiving cavity 2131c1, a second elastic member 2131c2 disposed within the receiving cavity 2131c1, and a movable limiting member 2131c3 slidable along the receiving cavity 2131c1. In this embodiment, the receiving cavity 2131c1 is connected to the tubular body 2131a; in this embodiment, the receiving cavity 2131c1 can be fixed to one side of the tubular body 2131a by means of threaded connection or welding. The limiting member 2121c3 is slidably disposed in the receiving cavity 2121c1, and an anti-dislodgement structure (e.g., a continuous annular protrusion or spaced protrusions disposed at the opening edge of the receiving cavity 2121c3) can be selectively provided at the end position of the receiving cavity 2121c3 to prevent the movable limiting member 2121c3 from dislodging. Accordingly, in order to achieve alignment between the end face of the movable limiting member 2121c3 and the inner side of the tubular body 2131a, a positioning structure that cooperates with the release structure can be set at the edge of the movable limiting member 2121c3 to ensure the stable setting of the movable limiting member 2121c3.
[0078] In this embodiment, the shape of the movable limiting member 2131c3 is configured to match the opening shape of the receiving cavity 2131c1. For example, if the opening shape of the receiving cavity 2121c1 is circular, rectangular, or elliptical, the shape of the movable limiting member 2121c3 is also correspondingly set to be circular, rectangular, or elliptical. In this embodiment, the outer surface of the movable limiting member 2121c3 is sealed to the inner wall of the receiving cavity 2121c1 to prevent gas leakage to the rear of the movable limiting member 2121c3.
[0079] In this embodiment, a one-way air valve can be provided on the side of the receiving cavity 2121c1 away from the opening, so that the contents of the movable limiting member 2121c3 can be discharged when it moves backward, thereby ensuring the stable operation of the movable limiting member 2121c3.
[0080] In this embodiment, one end of the movable limiting member 2131c3 abuts against the second elastic member 2131c2, and the other end is configured to fit the shape of the inner wall of the tubular body 2131a. By applying pressure to the movable limiting member 2121c3 using the second elastic member 2121c2, the position of the movable limiting member 2121c3 is stabilized, which is beneficial to the stable limiting of the switch connector 2132.
[0081] In this embodiment, to achieve the limiting effect of the movable limiting member 2121c3 on the switch connector 2132, a limiting protrusion 2121c31 connected to the matching limiting structure 2122b is provided at the end of the movable limiting member 2121c3 away from the second elastic member 2121c2. When the limiting protrusion 2121c31 is connected to the matching limiting structure 2122b, the locking connector 2132a partially obstructs the end face of the movable limiting member 2121c3.
[0082] In this embodiment, the portion of the movable limiting member 2121c3 not obstructed by the locking connector 2132a is on the same side of the locking connector 2132a as the first elastic member 2131b and the vent 2121d. With this arrangement, the high-pressure gas flowing in through the vent 2121d pushes the movable limiting member 2121c3, thereby releasing the locking connector 2132a and opening the outer casing portion 211.
[0083] In this embodiment, the edge of the locking connector 2132a that abuts against the first elastic member 2131b is provided with a chamfered surface. By providing the chamfered surface, on the one hand, positioning with the first elastic member 2131b is achieved, ensuring stable abutment with the first elastic member 2131b. On the other hand, the chamfered surface can effectively increase the unobstructed area of the movable limiting member 2121c3, which is further beneficial for the movable limiting member 2121c3 to be pushed by high-pressure gas, so as to realize the smooth opening of the outer shell part 211.
[0084] In this embodiment, the vent 2121d can be configured as a conical vent with its small diameter end located on the inner side of the tubular body 2131a and its large diameter end located on the outer side of the tubular body 2131a.
[0085] With the above settings, the switch structure 213 can be used to sense the pressure change inside the outer shell 21. When the fire extinguishing bomb reaches the fire extinguishing position, the fire extinguishing agent release device 23 receives the signal and starts to release the fire extinguishing agent, which can effectively increase the gas pressure in the outer shell 21 rapidly. In this process, the switch structure 213 senses the change and releases the switch connector 2132 to open the outer shell.
[0086] With the above-described design, the switch structure of this solution is simple in structure and reliable and stable in operation. It effectively ensures the timely opening of the outer casing and maintains high reliability even in high-temperature environments, thus ensuring the effective fire extinguishing of the fire extinguishing bomb of this invention.
[0087] According to another embodiment of the present invention, based on the aforementioned switch structure 213, a high-pressure gas cylinder may be further provided. The high-pressure gas cylinder is connected to the vent 2121d through a pipeline, and is used to release the internal high-pressure gas after the fire extinguishing bomb reaches the fire extinguishing position to realize the smooth operation of the switch structure 213, thereby further improving the reliability of the present invention.
[0088] Combination Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, the outer shell 21 has a hollow cylindrical structure and is divided into two identical outer shell portions 211. In this embodiment, to achieve the sealing of the interior of the outer shell 21, a sealing structure can be provided at the abutment position of the outer shell portions 211. In this embodiment, the sealing structure can be a mechanical structure that fits into each other (e.g., a boss-groove structure), or a flexible sealing element such as a sealing strip. By providing a sealing structure to achieve the sealing of the internal space, it is beneficial to ensure that the opening and closing structure is activated by changes in internal pressure. In this embodiment, the increased pressure inside the outer shell 21 can be achieved by a gas storage device provided inside the outer shell, or by first triggering the gaseous extinguishing agent released by the extinguishing agent release device 23.
[0089] According to one embodiment of the present invention, a plurality of (e.g., two, three, etc.) switch structures 213 are provided at intervals in the housing 21 along the axial direction of the housing 21, and the switch structures 213 are arranged parallel to each other.
[0090] Combination Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, the inner shell 22 is provided with a hollow cylinder, the opposite ends of which are fixedly connected to the axial ends of one of the outer shell portions 211 of the outer shell 21. In this embodiment, when the two outer shell portions 211 are closed, the inner shell 22 and the outer shell 21 are coaxially arranged. When the outer shell portion 211 not connected to the inner shell 22 is unfolded, half of the outer surface of the inner shell 22 can be exposed, thereby enabling fire extinguishing operations on the exposed portion of the inner shell 22. With the above arrangement, when the other outer shell portion is not connected to the inner shell, its light weight is more conducive to rapid unfolding, and the outer shell portion connected to the inner shell is heavier, making it easier to ensure positional stability during unfolding, which is beneficial to ensuring the orientation of the exposed portion of the inner shell, greatly improving the operational stability of the present invention.
[0091] Combination Figure 7 and Figure 8As shown, according to another embodiment of the present invention, multiple inner shells 22 are provided, each being a hollow cylinder. In this embodiment, when the two outer shell portions 211 are closed, the multiple inner shells 22 are arranged sequentially along the axial direction of the outer shell 21 and are respectively connected to different outer shell portions 211; wherein, the opposite ends of each inner shell 22 are fixed to the inner surface of the corresponding outer shell portion 211 by rod-shaped connectors. With this installation method, when the outer shell portions 211 are separated, the inner shells 22 connected to them can be moved as the outer shell portions 211 are opened, thereby making the distribution of the inner shells 22 more widespread, which is beneficial to increasing the fire extinguishing area and effectively improving the fire extinguishing effect of the present invention.
[0092] Combination Figure 9 and Figure 10 As shown, according to another embodiment of the present invention, multiple inner shells 22 are provided, each being a hollow semi-cylinder. In this embodiment, the inner shells 22 are respectively arranged on two outer shell portions 211. This arrangement ensures that each outer shell portion 211 has an inner shell 22 with the same structure. Thus, when the outer shell portion 211 is closed, the two opposing inner shells 22 also form a cylindrical structure. When the outer shell portion 211 is separated, each outer shell portion 211 is filled with inner shells 22 to achieve a consistent fire extinguishing area, thereby improving the fire extinguishing area of the present invention.
[0093] like Figure 7 As shown, according to another embodiment of the present invention, if both outer shell portions 211 are connected to inner shells 22, the number or size of the inner shells 22 connected to one outer shell portion 211 is smaller than the number or size of the inner shells 22 connected to the other outer shell portion 211.
[0094] By adjusting the size or number of inner shells 22 on different outer shell parts 211, the weight borne by different outer shell parts 211 can be adjusted, which is beneficial to improving the opening efficiency and stability of the outer shell parts 211.
[0095] like Figure 11As shown, according to one embodiment of the present invention, the fire extinguishing agent release device 23 includes: a hollow cylinder 231 open at both ends, a front cover 232 for connecting to the front end of the hollow cylinder 231, a rear cover 233 for connecting to the rear end of the hollow cylinder 231, a first connecting shaft 234 disposed on the front cover 232, a second connecting shaft 235 disposed on the rear cover 233, and a heater 236. In this embodiment, the shape of the hollow cylinder 231 matches the shape of the inner shell 22. For example, if the inner shell 22 is a cylinder, the hollow cylinder 231 can also be set as a cylinder; if the inner shell 22 is a semi-cylinder, the hollow cylinder 231 can be set as a semi-cylinder. In this embodiment, one end of the heater 236 is detachably mounted on the front cover 232, and the other end extends into the hollow cylinder 231. In this embodiment, the heater 236 can be an electric heater, which can be connected to the control unit via a wire or wireless connection to achieve timely activation of the fire extinguishing agent when it reaches the fire extinguishing point.
[0096] In this embodiment, the first connecting shaft 234 is a hollow shaft, and the wires of the heater 236 are led out through the hollow part of the first connecting shaft 234. The led-out wires extend through the axial direction of the inner housing 22 and the outer housing 21 all the way to the control unit of the projectile, realizing the corresponding electrical connection.
[0097] Combination Figure 11 and Figure 12 As shown, according to one embodiment of the present invention, a through hole 221 is provided on the side of the inner shell 22 opposite to the outer shell portion 211 to which it is connected. A plurality of grooves 231a are provided on the outer surface of the hollow cylinder 231 opposite to the side of the inner shell 22 where the through hole 221 is provided. In this embodiment, if the hollow cylinder 231 is a cylinder, the extending direction of the grooves 231a is radially aligned with the hollow cylinder 231. If the hollow cylinder 231 is a semi-cylinder, the grooves 231a are formed on the plane of the semi-cylinder body, and their extending direction is perpendicular to the plane of the semi-cylinder body.
[0098] In this embodiment, multiple grooves 231a are arranged at equal intervals, and the grooves 231a are straight grooves. In this embodiment, grooves are provided at the bottom of the grooves 231a. These grooves are grooves with a certain depth and a small width. In this embodiment, along the axial direction of the hollow cylinder 231, the grooves are straight grooves, wavy grooves, or multiple annular grooves arranged at intervals.
[0099] By setting the groove at the bottom of the groove 231a as described above, the bottom strength of the groove 231a can be effectively controlled, which can further help control the expansion and ejection effect of the internal extinguishing agent and improve the extinguishing effect of the present invention.
[0100] like Figure 13 As shown, according to another embodiment of the present invention, the hollow cylinder 231 includes an inner cylinder portion 2311 and an outer cylinder portion 2312 coaxially arranged. In this embodiment, the inner cylinder portion 2311 has a plurality of through grooves 2311a penetrating its sidewall, and the opening direction of the through grooves 2311a is adapted to the shape of the hollow cylinder 231. In this embodiment, the outer cylinder portion 2312 is sealed to the inner cylinder portion 2311 to seal the through grooves 2311a, and a groove is provided on the outer cylinder portion 2312 at a position corresponding to the through grooves 2311a. The groove can be a straight groove, a wavy groove, or a plurality of annular grooves spaced apart. In this embodiment, the outer cylinder portion 2312 can be made of a soft material to facilitate its opening and ensure the smooth discharge of the internal extinguishing agent.
[0101] like Figure 1 As shown, according to one embodiment of the present invention, the window-breaking device 4 is a pyramidal structure. In this embodiment, multiple window-breaking devices 4 are arranged in a regular, spaced pattern on the projectile 1. The regular distribution of multiple window-breaking devices 4 forms a window-breaking area, effectively increasing the window-breaking position and improving the window-breaking effect of the present invention.
[0102] The above description is merely an example of a specific solution of the present invention. For any devices and structures not described in detail herein, it should be understood that they are implemented using common devices and methods already available in the art.
[0103] The above description is merely one embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A non-fragmenting fire extinguishing projectile, characterized in that, The application relates to a fire extinguishing projectile, which comprises a bullet (1), a fire extinguishing combat unit (2), a propelling device (3), a window breaking device (4) and a control unit. The bullet (1) and the propelling device (3) are located at opposite ends of the fire extinguishing combat unit (2), and the propelling device (3) is detachably arranged with the fire extinguishing combat unit (2). The window breaking device (4) is arranged at one end of the bullet (1) away from the fire extinguishing combat unit (2). The control unit is arranged in the bullet (1). The fire extinguishing combat unit (2) comprises an outer shell (21), an inner shell (22) arranged in the outer shell (21), and a fire extinguishing agent releasing device (23) arranged in the inner shell (22). The outer shell (21) is a hollow regular cylinder, which comprises two symmetrically arranged outer shell parts (211), at least one hinge structure (212) and at least one switch structure (213). One end of each of the two outer shell parts (211) is connected with the hinge structure (212), so that the two outer shell parts (211) can rotate around the hinge structure (212). The other end of each of the two outer shell parts (211) is connected with the switch structure (213), which is used for controlling the opening and closing of the two outer shell parts (211). The inner shell (22) is a hollow cylinder, and a plurality of through holes (221) are arranged on the side wall of the inner shell (22) at intervals. The fire extinguishing agent releasing device (23) is a compressed gas explosion type fire extinguishing device. The hinge structure (212) comprises a first rotating hinge (2121), a second rotating hinge (2122), a hinge rotating shaft (2123) connected with the first rotating hinge (2121) and the second rotating hinge (2122), and a torsional spring sleeved on the hinge rotating shaft (2123). When the two outer shell parts (211) are closed, the torsional spring is in a compressed state and abuts against the first rotating hinge (2121) and the second rotating hinge (2122). The first rotating hinge (2121) or the second rotating hinge (2122) is provided with an angle limiting structure for limiting the maximum rotation angle of the first rotating hinge (2121) or the second rotating hinge (2122). The switch structure (213) comprises a switch seat (2131) and a switch connecting piece (2132) connected with the switch seat (2131). One end of the switch seat (2131) is fixedly connected to the side surface of one of the outer shell parts (211), and one end of the switch connecting piece (2132) is rotatably connected to the side surface of the other outer shell part (211). When the two outer shell parts (211) are closed, the other end of the switch connecting piece (2132) is locked with the switch seat (2131). The switch base (2131) comprises a hollow tubular body (2131a), a first elastic member (2131b) arranged in the tubular body (2131a), a limiting structure (2131c) arranged on the sidewall of the tubular body (2131a), and a ventilation hole (2131d) arranged on the sidewall of the tubular body (2131a) and penetrating through the sidewall; The switch connecting piece (2132) is provided with a locking connecting piece (2132a) at one end; The locking connecting piece (2132a) is provided with a matching locking structure (2132b) matched with the limiting structure (2131c); When the matching locking structure (2132b) is connected with the limiting structure (2131c), the locking connecting piece (2132a) abuts against the first elastic member (2131b), and the first elastic member (2131b) is in a compressed state; The ventilation hole (2131d) and the first elastic member (2131b) are located on the same side of the locking connecting piece (2132a); The limiting structure (2131c) comprises a containing cavity (2131c1), a second elastic member (2131c2) arranged in the containing cavity (2131c1), and a movable limiting member (2131c3) slidable along the containing cavity (2131c1); The containing cavity (2131c1) is arranged in communication with the tubular body (2131a); The shape of the movable limiting member (2131c3) is matched with the shape of the opening of the containing cavity (2131c1); One end of the movable limiting member (2131c3) abuts against the second elastic member (2131c2), and the other end is matched with the shape of the inner sidewall of the tubular body (2131a); The end of the movable limiting member (2131c3) away from the second elastic member (2131c2) is provided with a limiting protrusion (2131c31) connected with the matching locking structure (2132b); When the limiting protrusion (2131c31) is connected with the matching locking structure (2132b), the locking connecting piece (2132a) blocks part of the end surface of the movable limiting member (2131c3).
2. The fragment-free fire extinguishing projectile of claim 1, wherein, The inner shell (22) is provided with one hollow cylindrical body, and the opposite ends thereof are fixedly connected with the axial ends of one of the shell portions (211) in the outer shell (21); or, The inner shell (22) is provided with multiple hollow cylindrical bodies; When the two shell portions (211) are closed, the multiple inner shells (22) are arranged in sequence along the axial direction of the outer shell (21) and are connected with different shell portions (211); or, The inner shell (22) is provided with multiple hollow semicylindrical bodies; The inner shell (22) is arranged on the two shell portions (211) respectively.
3. The fragment-free fire extinguishing projectile of claim 2, wherein, If both of the outer shell parts (211) are connected with the inner shell (22), the number or size of the inner shell (22) connected with one of the outer shell parts (211) is smaller than that of the inner shell (22) connected with the other outer shell part (211).
4. The fragment-free fire extinguishing projectile of claim 3, wherein, The fire extinguishing agent releasing device (23) comprises a hollow cylinder (231) with two open ends, a front cover (232) connected with the front end of the hollow cylinder (231), a rear cover (233) connected with the rear end of the hollow cylinder (231), a first connecting shaft (234) arranged on the front cover (232), a second connecting shaft (235) arranged on the rear cover (233), and a heater (236); The hollow cylinder (231) is shaped to match the shape of the inner shell (22); One end of the heater (236) is detachably mounted on the front cover (232), and the other end extends into the hollow cylinder (231); The first connecting shaft (234) is a hollow shaft, and the wire of the heater (236) is led out through the hollow part of the first connecting shaft (234).
5. The fragment-free fire extinguishing projectile of claim 4, wherein, The through hole (221) is arranged on the side of the inner shell (22) away from the outer shell part (211) connected therewith; A plurality of grooves (231a) are arranged on the outer side of the hollow cylinder (231) opposite to the side of the inner shell (22) where the through hole (221) is arranged; The bottom of the groove (231a) is provided with a notch.
6. The fragment-free fire-extinguishing projectile according to any one of claims 1 to 5, characterized in that The window breaking device (4) has a pyramid structure; The window breaking device (4) is regularly arranged on the bullet head (1) with a plurality of intervals.
Citation Information
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