Gas fire extinguishing device for closed environment

Abstract

The utility model discloses a gas fire extinguishing device for a closed environment, which comprises a cabinet body and a fire extinguishing agent storage bottle positioned in the cabinet body, a pipe body is arranged at the output end of the fire extinguishing agent storage bottle, the gas fire extinguishing device further comprises a control frame, and two groups of positioning plates are respectively arranged on two sides of the output end of the pipe body and limit the pipe body. The pipe body can rotate along the axis of the positioning disc; the positioning disc is further provided with an inner spring for supporting the pipe body, the inner spring is heated to generate fatigue, and the orientation of the pipe body is changed. Furthermore, the control frame further comprises two sets of supporting frames fixed to the cabinet body. The orientation of the pipe body is automatically changed through the control frame under the condition that no human intervention exists, the orientation of the pipe body is changed under the condition that the fire disaster temperature rises, the range of releasing the fire extinguishing agent is increased, then human intervention is not needed, and the gold escape time is prevented from being influenced.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher technology, specifically a gas fire extinguishing device for use in enclosed environments. Background Technology

[0002] Heptafluoropropane decomposes at high temperatures to produce fluorine-containing free radicals (such as CF3 and CF2), which combine with reactive free radicals (such as H and OH) in the combustion chain reaction, interrupting the chemical reaction. This chemical inhibition makes it extremely fast at extinguishing fires, typically within seconds. Due to its high efficiency, cleanliness, and safety, heptafluoropropane fire suppression systems have become the preferred fire protection solution for critical locations such as data centers and cultural heritage sites.

[0003] However, for fire extinguishing devices without piping (such as cabinet-type or suspended types), where the extinguishing agent cylinder is placed directly within the protected area, the extinguishing agent can only cover a limited area of ​​the device when discharged. This is suitable for localized protection of small spaces or specific equipment. For slightly larger areas, the fire extinguisher is difficult to cover, affecting the extinguishing effect.

[0004] Meanwhile, heptafluoropropane needs to rapidly achieve a uniform concentration within a confined space to effectively extinguish fires. If there are unsealed openings in the protected area or the ventilation system is not closed in advance, the extinguishing agent will leak out, reducing the actual coverage concentration. In high-temperature fires, heptafluoropropane may decompose to produce toxic gases such as hydrogen fluoride (HF), requiring personnel to be evacuated before discharge and to be ventilated before re-entry after extinguishing the fire. This indirectly limits the applicability of the extinguishing agent in open or densely populated areas. Therefore, while increasing the automatic coverage range is necessary, manual operation must be avoided to prevent personnel from being affected. Utility Model Content

[0005] The purpose of this invention is to provide a gas fire extinguishing device for enclosed environments to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a gas fire extinguishing device for a closed environment, including a cabinet and a fire extinguishing agent storage bottle located inside the cabinet. The output end of the fire extinguishing agent storage bottle has a tube. It also includes a control frame, including two sets of positioning discs respectively arranged on both sides of the output end of the tube. The two sets of positioning discs limit the tube, so that the tube can rotate along the axis of the positioning discs.

[0007] The positioning plate also has an inner spring that supports the tube body. When the inner spring is heated, it becomes fatigued and changes the orientation of the tube body.

[0008] Furthermore, the control frame also includes two sets of support frames fixed to the cabinet. The two sets of support frames are located outside the two sets of positioning discs respectively. A fixed shaft passes through the axis of each of the two sets of positioning discs. The support frame passes through the outside of the fixed shaft and the support frame is fixed to the positioning disc by bolts.

[0009] A cross tube is fixedly sleeved on the tube body, and the transverse part of the cross tube is sleeved with the fixed shafts on both sides.

[0010] Both sets of positioning discs have arc-shaped slots whose axes coincide with the positioning disc axis. The tube body is also fitted with a sleeve, and control shafts extending into the arc-shaped slots on both sides are fixed at both ends of the sleeve. The inner spring is installed in the arc-shaped slot and supports the control shaft.

[0011] Furthermore, the output end of the tube is a rigid structure, while the rest of the tube is a flexible structure.

[0012] Furthermore, protective plates that fit against the positioning plate are provided on both sides of the arc-shaped groove. The protective plates are fixed to the control shaft and are used to cover the arc-shaped groove.

[0013] Furthermore, a counterweight is fixed to the outer side of the protective sheet.

[0014] Furthermore, the inner spring is arc-shaped and fits into the arc-shaped groove, and the inner spring is made of carbon spring steel.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are: this utility model can automatically change the orientation of the tube without human intervention by controlling the frame, and change the orientation of the tube when the fire temperature rises, thereby increasing the range of extinguishing agent release. Secondly, it does not require human intervention, thus avoiding affecting the golden escape time. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the control frame structure of this utility model;

[0019] Figure 3 This is a partially exploded structural diagram of the control frame of this utility model;

[0020] Figure 4 This is a schematic diagram of the main structure of the control frame and partial tube of this utility model.

[0021] In the diagram: 1. Cabinet; 2. Extinguishing agent storage bottle; 3. Pipe; 4. Control frame; 41. Support frame; 42. Positioning plate; 43. Arc-shaped groove; 44. Fixed shaft; 45. Cross tube; 46. Control shaft; 47. Sleeve; 48. Inner spring; 49. Protective plate; 401. Counterweight. 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] Please see Figures 1-4 The present invention provides a technical solution: a gas fire extinguishing device for a closed environment, including a cabinet 1 and a fire extinguishing agent storage bottle 2 located in the cabinet 1. The output end of the fire extinguishing agent storage bottle 2 has a tube 3. The device also includes a control frame 4, which includes two sets of positioning discs 42 respectively arranged on both sides of the output end of the tube 3. The two sets of positioning discs 42 limit the tube 3 so that the tube 3 can rotate along the axis of the positioning discs 42.

[0024] The positioning plate 42 also has an inner spring 48 that supports the tube body 3. The inner spring 48 fatigues when heated, changing the orientation of the tube body 3.

[0025] Specifically, the extinguishing agent storage cylinder 2 is fixed inside the cabinet 1, which can be closed or open. The tube 3 at the output end of the extinguishing agent storage cylinder 2 can be set to different lengths to adapt to different environments, while reducing the probability of the tube 3 melting when the ambient temperature rises. The control frame 4 can be installed in a location prone to fire. The output end of the tube 3 is limited by the control frame 4. The control frame 4 is closest to the fire source, and the same applies to the output end of the tube 3. The part of the tube 3 other than the output end extends away from the fire source, thus being less affected by the fire source. As the temperature of the control frame 4 rises, the internal spring 48 will temporarily "soften" due to the decrease in elastic modulus caused by the temperature rise, thus changing the supporting effect on the mounted tube 3 and changing the orientation of the output end of the tube 3.

[0026] The control frame 4 also includes two sets of support frames 41 fixed to the cabinet 1. The two sets of support frames 41 are located outside the two sets of positioning plates 42 respectively. A fixed shaft 44 passes through the axis of the two sets of positioning plates 42. The support frame 41 passes through the outside of the fixed shaft 44 and the support frame 41 is fixed to the positioning plate 42 by bolts.

[0027] A cross tube 45 is fixedly sleeved on the tube body 3. The horizontal part of the cross tube 45 is sleeved with the fixed shafts 44 on both sides. The cross tube 45 limits the rigid part of the tube body 3. The two horizontal ends of the cross tube 45 are sleeved with the fixed shafts 44 on both sides. The cross tube 45 can rotate along the fixed shafts 44. The axis of the fixed shaft 44 coincides with the axis of the positioning plate 42.

[0028] Both sets of positioning discs 42 are provided with arc-shaped slots 43 whose axes coincide with the axis of the positioning discs 42. The tube body 3 is also fitted with a sleeve 47. Control shafts 46 extending into the arc-shaped slots 43 on both sides are fixed at both ends of the sleeve 47. The inner spring 48 is installed in the arc-shaped slots 43 and supports the control shafts 46.

[0029] Specifically, the arc-shaped slot 43 of the positioning disk 42 is circular, and its axis coincides with the axis of the positioning disk 42. The end of the control shaft 46 extends into the arc-shaped slot 43, further limiting the rigid part of the tube body 3, so that the position of the tube body 3 in the cross tube 45 remains unchanged and can only change its orientation. The part of the tube body 3 limited by the sleeve 47 can move along the shape of the arc-shaped slot 43, changing the orientation of the tube body 3. In addition, according to the counterweight 401, the inner spring 48 is kept under the compression force. After the elastic modulus decreases, the amount of compression of the inner spring 48 also increases, realizing the change of orientation.

[0030] The output end of tube 3 is a rigid structure, while the rest of tube 3 is a flexible structure. The flexible part makes it easy to change the position and orientation of the output end of tube 3, while the rigid part is close to the fire source and is easily affected by the fire source. Therefore, the rigid part is set to prevent tube 3 from melting.

[0031] Both sides of the arc-shaped slot 43 are provided with protective plates 49 that fit against the positioning plate 42. The protective plates 49 are fixed to the control shaft 46 and are used to cover the arc-shaped slot 43.

[0032] Specifically, the protective plate 49 covers the arc-shaped slot 43, and the inner spring 48 located in the arc-shaped slot 43 is limited so that it can avoid unnecessary deformation except when compressed.

[0033] A counterweight 401 is fixed to the outer protective plate 49, so that the control shaft 46 keeps the inner spring 48 under compression. The compression of the inner spring 48 is changed when the temperature changes.

[0034] The inner spring 48 is arc-shaped and fits into the arc-shaped groove 43. The inner spring 48 is made of carbon spring steel. Even if the compression state changes, the inner spring 48 located in the arc-shaped groove 43 can recover along the shape of the arc-shaped groove 43. After the ambient temperature drops, the carbon spring steel will recover again, realizing the recovery of the tube body 3 to a certain extent and changing the orientation of the tube body 3. It should be noted that the inner spring 48 is replaceable. It can be replaced after the inner spring 48 is damaged. The diameter and length of the inner spring 48 can be adjusted according to the orientation of the output end of the tube body 3 and the weight of the counterweight 401.

[0035] The working principle of this invention is as follows: Most existing heptafluoropropane systems are linked to a fire detection system. When the temperature in the protected area rises to a preset threshold, typically set by a heat detector (e.g., 68°C), the detector transmits a signal to the controller. If other types of detectors, such as smoke detectors, simultaneously confirm a fire, the controller automatically releases the extinguishing agent after a 30-second delay. Therefore, the release of the extinguishing agent can be automatically detected and extinguishing can be initiated automatically.

[0036] During a fire, pipe 3 will automatically release extinguishing agent. As the fire intensifies, the temperature gradually rises. Before the room temperature reaches 120°C, the fatigue strength of the inner spring 48 gradually decreases with the temperature increase. The inner spring 48 bears static load at high temperatures, and the decrease in elastic modulus caused by temperature will temporarily make it "softer," reducing the support height of pipe 3. Therefore, the inner spring 48 will be compressed, and the rigid part of pipe 3 will rotate along the positioning plate 42, causing the orientation of the output end of pipe 3 to change, increasing the range of extinguishing agent release. No human intervention is required, and the fire will have little other impact on the control frame 4, only changing the orientation of the output end of pipe 3. It should be noted that if the orientation of the output end of pipe 3 changes slightly, the range of extinguishing agent release will increase exponentially.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gaseous fire extinguishing apparatus for a closed environment, comprising a cabinet (1) and a fire extinguishing agent storage cylinder (2) located in the cabinet (1), the output end of the fire extinguishing agent storage cylinder (2) having a pipe body (3), characterized in that, The control frame (4) further comprises two sets of support frames (41) fixed to the cabinet body (1), the two sets of support frames (41) are respectively located outside the two sets of positioning discs (42), and fixed shafts (44) penetrate the two sets of positioning disc (42) axes. The positioning disc (42) further has an inner spring (48) supporting the pipe body (3), the inner spring (48) is fatigued by heat, and the orientation of the pipe body (3) is changed.

2. A gaseous fire extinguishing installation for an enclosed environment according to claim 1, characterized in that: The control frame (4) further comprises two sets of support frames (41) fixed to the cabinet body (1), the two sets of support frames (41) are respectively located outside the two sets of positioning discs (42), and fixed shafts (44) penetrate the two sets of positioning disc (42) axes. The pipe body (3) is fixedly sleeved with a cross pipe (45), and the transverse part of the cross pipe (45) is sleeved with the fixed shaft (44) on both sides. The two sets of positioning discs (42) are both provided with arc-shaped notches (43) with the same axis as the positioning disc (42) axis, the pipe body (3) is further sleeved with a sleeve (47), the sleeve (47) is fixedly provided with a control shaft (46) extending into the arc-shaped notches (43) on both sides, and the inner spring (48) is installed in the arc-shaped notches (43) and supports the control shaft (46).

3. A gaseous fire extinguishing system for an enclosed environment according to claim 1, characterised in that: The output end of the pipe body (3) is a rigid structure, and the remaining part of the pipe body (3) is a flexible structure.

4. A gaseous fire extinguishing system for an enclosed environment according to claim 2, characterised in that: The two sides of the arc-shaped notch (43) are both provided with a protective sheet (49) abutting the positioning disc (42), the protective sheet (49) is fixed with the control shaft (46), and the protective sheet (49) is used for covering the arc-shaped notch (43).

5. A gaseous fire extinguishing system for an enclosed environment according to claim 4, characterised in that: The outer protective sheet (49) is fixedly provided with a counterweight (401) outside.

6. A gaseous fire extinguishing system for an enclosed environment according to claim 1, characterised in that: The inner spring (48) is arc-shaped and fitted in the arc-shaped notch (43), and the inner spring (48) is a carbon spring steel.

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