High-pressure water fire extinguishing system for fire in student dormitory

Abstract

The utility model relates to the technical field of fire fighting, in particular to a high-pressure water fire extinguishing system for a student dormitory fire disaster. The spraying container is of a cylindrical structure, a piston is arranged in the spraying container, one end of the spraying container is communicated with a fire-fighting pipeline, and the other end of the spraying container is provided with a plugging structure; the agent cavity bag is made of a flexible material, internally provided with a fire extinguishing agent and arranged in the spraying container; the medicament cavity bag is provided with a first nozzle, and the first nozzle is arranged on the outer side of the spraying container; the fire extinguishing agent adopts a non-conductive liquid fire extinguishing agent, and the plugging structure is used for plugging the first nozzle; wherein the blocking structure is provided with a temperature sensing glass ball, after the temperature sensing glass ball is broken, blocking of the first nozzle by the blocking structure is relieved, and the fire fighting water pushes the piston and extrudes the agent cavity bag, so that the fire extinguishing agent is sprayed out from the first nozzle. The fire extinguishing device can extinguish initial fire caused by short circuit of the electric appliance in the first time, and avoids disasters caused by flame expansion.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to a high-pressure water fire extinguishing system for fires in student dormitories. Background Art

[0002] According to statistics, there have been 2,314 fires in student dormitories across the country in the past five years, with an average of one student dormitory catching fire every day. Pay attention to details in preventing fire hazards and prevent fires from entering schools.

[0003] At present, school dormitories use water spray to extinguish fires. This fire extinguishing method uses the temperature-sensitive glass ball on the sprinkler head to determine whether a fire has occurred. When a fire occurs, the temperature-sensitive glass ball breaks and fire water is sprayed out through the sprinkler head. However, most fires in student dormitories are electrical fires caused by improper use of electrical equipment. The efficiency of using water to extinguish electrical fires is very low, and there is a risk of electric shock. Utility Model Content

[0004] In order to solve the above-mentioned prior art problems, the utility model provides a high-pressure water fire extinguishing system for student dormitory fires, comprising:

[0005] The spray container is a cylindrical structure with a piston inside, one end of which is connected to the fire-fighting pipeline and the other end has a blocking structure;

[0006] The agent chamber is made of a flexible material, contains a fire extinguishing agent, and is arranged inside the spray container;

[0007] Wherein, the medicine cavity has a first nozzle, and the first nozzle is arranged outside the spray container;

[0008] Wherein, the fire extinguishing agent is a non-conductive liquid fire extinguishing agent;

[0009] Wherein, the blocking structure is used to block the first nozzle;

[0010] Wherein, the blocking structure has a temperature-sensitive glass ball. When the temperature-sensitive glass ball breaks, the blocking of the first nozzle by the blocking structure is released, and the fire water pushes the piston to squeeze the agent cavity so that the fire extinguishing agent is sprayed out from the first nozzle.

[0011] Furthermore, a second nozzle is provided on the side wall of the spray container, and after the piston passes through the second nozzle, the fire water is sprayed out from the second nozzle.

[0012] Furthermore, it also includes:

[0013] Detection components, used to detect temperature, and / or fire light, and / or smoke volume, to determine whether a fire risk occurs;

[0014] A trigger component, fixedly connected to the blocking structure, used to break the temperature-sensitive glass ball;

[0015] The detection component is communicatively connected with the trigger component. When the detection component determines that a fire risk has occurred, the trigger component is activated to break the temperature-sensitive glass ball.

[0016] Furthermore, the trigger component inside the spray container is configured as a heating coil, which is sleeved on the outside of the temperature-sensitive glass ball.

[0017] Furthermore, the trigger component is configured as a push-pull electromagnet, the iron core of which is directly opposite to the middle area of ​​the temperature-sensitive glass ball, and when the electromagnet is attracted, the iron core hits the temperature-sensitive glass ball.

[0018] Furthermore, it also includes a normally open solenoid valve, which is arranged on the fire-fighting pipeline and is used to close the spraying of fire-fighting water.

[0019] Furthermore, the middle section of the medicine chamber is configured as a bellows, and the length direction of the bellows is parallel to the length direction of the spray container to form a compression stroke;

[0020] The compression stroke is the movement stroke along the length of the spray container.

[0021] Furthermore, the fire extinguishing agent is perfluorohexanone.

[0022] Furthermore, the spray container has a closed fine water mist nozzle, the closed fine water mist nozzle is connected to the first nozzle, and the blocking structure is formed on the closed fine water mist nozzle.

[0023] Further, it includes: an alarm component, which is communicatively connected with the detection component.

[0024] The beneficial effect of the utility model is that the high-pressure water fire extinguishing system for student dormitory fires of the present application can extinguish the fire immediately when a short circuit occurs in an electrical appliance and a preliminary fire occurs, thereby preventing the flame from expanding and causing disasters. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a high-pressure water fire extinguishing system for student dormitory fires provided by the utility model;

[0026] Figure 2 A schematic diagram of the internal structure of a high-pressure water fire extinguishing system for student dormitory fires provided by the utility model;

[0027] Figure 3 A schematic diagram of the communication connection of components of a high-pressure water fire extinguishing system for student dormitory fires provided by the utility model;

[0028] Figure 4 A schematic diagram of the structure of a trigger component provided by the utility model;

[0029] Figure 5 A schematic diagram of the structure of another trigger component provided by the utility model;

[0030] Figure 6 for Figure 5 Schematic diagram of a partial cross-section structure.

[0031] Reference numerals:

[0032] 1. Spray container; 11. Piston; 12. Sealing structure; 121. Temperature-sensitive glass ball; 13. Second nozzle; 2. Medicine chamber; 21. First nozzle; 3. Detection component; 4. Trigger component; 41. Heating coil; 42. Push-pull electromagnet; 421. Iron core; 5. Normally open solenoid valve; 6. Closed fine water mist nozzle; 7. Alarm component; 8. Fire-fighting pipeline. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Embodiment 1:

[0035] Reference Figure 1-Figure 6 shown.

[0036] At present, school dormitories in society all use sprinkler fire extinguishing systems, and the fire extinguishing medium used is just ordinary water. This fire extinguishing system guides fire water to each fire extinguishing area through the fire pipe 8. A normally closed sprinkler head is set in the area. The normally closed sprinkler head refers to a sprinkler head with a plug at the nozzle, which is pressed against the nozzle by a temperature-sensitive glass ball 121. When the temperature-sensitive glass ball 121 breaks, the fire water will be sprayed out from the nozzle. The temperature-sensitive glass ball 121 is a glass ball with kerosene inside, and the glass ball will break when a certain temperature is reached.

[0037] The fire extinguishing logic of the sprinkler fire extinguishing system is actually to put out the fire when the flames really begin to spread, and it is difficult to extinguish the fire in the early stage. The most common fire in student dormitories is caused by improper use of electrical appliances, which is an electrical fire. The medium used in the sprinkler fire extinguishing system is water, which is conductive. If water is sprayed directly towards the socket at the beginning of the fire, it will cause a short circuit and directly cause the fire.

[0038] In this regard, the present application makes improvements in the original sprinkler system. Specifically, the sprinkler head in the fire protection pipeline 8 of the original sprinkler system is cancelled and replaced by a sprinkler container 1 of the present application. Specifically, the shells of the two are connected by a threaded adapter. Generally, the sprinkler end of the fire protection pipeline 8 is a pipe with a diameter of D15, while the sprinkler container 1 of the present application needs to accommodate a medicine chamber 2, so in general, the diameter will be much larger than the diameter of the sprinkler pipeline.

[0039] The inner tank of the agent cavity 2 is filled with a fire extinguishing agent, and the fire extinguishing agent is: carbon dioxide, carbon tetrachloride, difluoromonochloromonobromomethane, and perfluorohexanone. These fire extinguishing agents are not conductive, and have extremely low boiling points. They can be vaporized at room temperature, absorbing the surrounding heat while keeping the circuit dry. Perfluorohexanone is preferred here. Perfluorohexanone fire extinguishing agent has the advantages of being non-toxic and non-polluting compared to other agents, and the fire extinguishing concentration is 4%-6%, and the safety margin is relatively high.

[0040] The medicine capsule 2 is arranged in the spray container 1 and has a first nozzle 21. The spray container 1 blocks the first nozzle 21 through a blocking structure 12. The blocking structure 12 has the same specific structure as the blocking structure 12 of the traditional closed spray, and adopts the form of a temperature-sensitive glass ball 121 abutting against the plug, and the plug abutting against the first nozzle 21;

[0041] At the same time, the spray container 1 also has a piston 11, one end of the piston 11 abuts against the fire water, and the other end abuts against the agent chamber 2. That is to say, when the system is not started, the water pressure of the fire water always acts on the agent chamber 2, so that the fire extinguishing agent always has a tendency to spray along the first nozzle 21.

[0042] When the temperature-sensitive glass ball 121 breaks and loses its support for the plug, the blocking structure 12 loses its blocking effect, so that the fire water pushes the piston 11 and squeezes the agent chamber 2 , so that the fire extinguishing agent is sprayed out from the first nozzle 21 .

[0043] It should be noted that the spraying speed of the fire extinguishing agent cannot be too fast, but should be atomized to a certain extent before entering the fire extinguishing area. Therefore, the diameter of the first nozzle 21 cannot be too large and is optimally controlled to be less than 2 mm; or the first nozzle 21 is not used as a nozzle for the agent chamber 2 to connect to the external environment, but is connected to the closed fine water mist nozzle 6 through the first nozzle 21. The closed fine water mist nozzle 6 is similar to the closed sprinkler head, except that the nozzle is located on the side wall of the nozzle, and the nozzle has an atomization structure. It is a commonly used nozzle for fire fighting. And the closed fine water mist nozzle 6 itself has a blocking structure 12, so the first nozzle 21 can be directly blocked by the blocking structure 12 of the closed fine water mist nozzle 6 itself.

[0044] Example 2

[0045] Reference Figure 1and Figure 2 shown.

[0046] The side wall of the spray container 1 is provided with a second nozzle 13 , and after the piston 11 passes through the second nozzle 13 , the fire water is sprayed out from the second nozzle 13 .

[0047] The installation space of the spray container 1 is limited, and the volume of the agent chamber 2 is limited, so it is difficult to achieve full flooding fire extinguishing for the entire dormitory. The fire extinguishing agent is only used as a means of extinguishing the fire in the early stage. If the fire is fierce, the fire extinguishing agent spraying does not stop the spread of the fire. At this time, there is no need to consider the problem of circuit short circuit, because the flame must have burned the circuit and surrounding objects.

[0048] The fire water continuously flows downwards in the process of squeezing the medicine capsule 2, and occupies the internal space of the spray container 1 with the medicine capsule 2. When the piston 11 passes over the second nozzle 13 on the side wall of the spray container 1, the fire water is directly sprayed out through the second nozzle 13 without squeezing the medicine capsule 2. The external environment is sprayed with water to extinguish the fire.

[0049] Example 3

[0050] Reference Figure 1-Figure 6 shown.

[0051] It also includes a detection component 3, which is used to detect temperature and / or smoke volume to determine whether a fire risk occurs;

[0052] A trigger component 4, fixedly connected to the blocking structure 12, for breaking the temperature-sensitive glass ball 121;

[0053] When the detection component 3 determines that a fire risk has occurred, the trigger component 4 starts to smash the temperature-sensitive glass ball 121 .

[0054] The fire extinguishing agent used in the fire extinguishing system of the present application is no longer simply fire water, but can be sprayed directly toward the circuit, so the fire source can be extinguished at the early stage of the fire.

[0055] Therefore, the fire extinguishing system of the present application does not necessarily have to wait until the fire area is overheated before starting the fire extinguishing. Therefore, the present application can add a detection component 3 to confirm the fire situation as early as possible.

[0056] The source of fire in school often occurs near the socket. Therefore, a detection component 3 can be set near the socket to detect temperature, and / or fire, and / or smoke volume to determine whether a fire risk occurs. When the detection component 3 determines that a fire risk occurs (the temperature, and / or fire, and / or smoke volume indicators exceed the preset values), a start signal is sent to the trigger component 4 to activate the temperature-sensitive glass ball 121.

[0057] A trigger component 4 can be specifically configured as a heating coil 41 sleeved on the outside of the temperature-sensitive glass ball 121. When the trigger component 4 receives a start signal, it actively heats the temperature-sensitive glass ball 121, so that the temperature-sensitive glass ball 121 reaches a predetermined temperature and breaks.

[0058] The trigger component 4 can also be set as a push-pull electromagnet 42, which can be understood as a general term for push-type and pull-type electromagnets. It is an electrical component composed of a coil, an iron core 421, a fixed iron core 421 and a yoke. For example, a pull-type electromagnet, when the coil is energized, the internal fixed iron core 421 generates a strong magnetic attraction, which adsorbs the movable iron core 421 to generate a pulling force, and the power-off spring drives the iron core 421 to reset to an unpowered state, waiting for the next power-on operation. The electromagnet is directed toward the temperature-sensitive glass ball 121, and the iron core acts as an impact rod facing the center area of ​​the temperature-sensitive glass ball 121. When the trigger component 4 receives the start signal, the iron core 421 is attracted, and the end of the iron core 421 hits the temperature-sensitive glass ball 121.

[0059] It can be accurately known that no matter what structure the trigger component 4 adopts, it should also have a power supply module and a signal receiving module.

[0060] Example 4

[0061] Reference Figure 1 shown.

[0062] It also includes a normally open electromagnetic valve 5, which is arranged on the fire-fighting pipeline 8 and is used to close the spraying of fire-fighting water.

[0063] If the fire extinguishing system has extinguished the fire in the early stages through fire-fighting agents, and relevant personnel have discovered and turned off the power supply in time, then a serious fire will not occur. At this time, the fire-fighting system should not continue to spray fire-fighting water, which will wet the circuit and cause unnecessary trouble.

[0064] In this embodiment, a normally open electromagnetic valve 5 is provided in the fire-fighting pipeline 8. The normally open electromagnetic valve 5 is connected to the detection component 3 by signal. When the fire-fighting agent extinguishes the fire source, the normally open electromagnetic valve 5 starts to close the fire-fighting pipeline 8. How to judge whether the fire source is extinguished is based on the comparison between the detection parameter of the detection component 3 and the preset value. When the fire source appears, the detection parameter is in a state higher than the preset value. With the spraying of the fire-fighting agent, the detection parameter will continue to decrease (when the fire is not fierce). In the process of decreasing, there will be a node where the detection parameter intersects with the preset value. After this node, the normally open electromagnetic valve 5 is started, but the flame may reignite. If the detection parameter is greater than the preset value again, it means that reignition has occurred. Since the fire-fighting agent has been sprayed in the first combustion, the reignition phenomenon can only be sprayed by fire-fighting water. Therefore, during the reignition period, the normally open electromagnetic valve 5 continues to remain in a closed state to keep the circulation of fire-fighting water. In addition, the detection component 3 is closer to the fire source and may be burned by the fierce flame when reigniting, which leads to the false start of the normally open electromagnetic valve 5.

[0065] It can be specifically set at a section of the fire-fighting pipeline 8 before the fire-fighting pipeline 8 is connected to the spray container 1. The normally open solenoid valve 5 should not be too far from the spray container 1. The normally open solenoid valve 5 can use the same power supply module as the trigger mechanism. Because fire is a low-probability, high-hazard event, some fire-fighting systems may not be opened until they are scrapped, and the normally open solenoid valve 5 is closed after startup. If a fire has not been extinguished within an hour or so after it occurs, the surrounding objects have basically been destroyed. There is no need to close the solenoid valve afterwards, and the entire fire-fighting system can be shut down through the main controller of the fire-fighting system. Moreover, when the flame burns fiercely, it is very likely to burn the power supply module. The solenoid valve is set to be normally open, and even if there is no power supply, the internal spring can keep the normally open solenoid valve 5 open to ensure that the fire-fighting water can be continuously sprayed.

[0066] Example 5

[0067] Reference Figure 2 shown.

[0068] The side wall of the medicine chamber 2 is configured as a bellows structure and has a compression stroke;

[0069] The compression stroke is a movement stroke along the axis of the spray container 1 .

[0070] In the process of fire water pushing the piston 11, the most ideal state should be that the piston 11 completely translates along the axis of the spray container 1, but the agent chamber 2 is a flexible structure and contains fire extinguishing agent inside, similar to a water-storing balloon. When the agent chamber 2 is squeezed, the fire extinguishing agent inside will not only move toward the first nozzle 21, but will also be partially squeezed toward the surroundings so that the agent chamber 2 is close to the inside of the spray container 1, increasing the resistance encountered by the piston 11; it is more likely that the wall of the agent chamber 2 will drill into the gap between the piston 11 and the inner wall of the spray container 1, causing the piston 11 to get stuck.

[0071] In this embodiment, the middle section of the medicine chamber 2 is set as a bellows, which refers to a tubular elastic sensitive element connected by a foldable corrugated sheet along the folding and stretching direction. That is to say, the medicine chamber 2 with a bellows structure is very easy to deform along the folding and stretching direction, which is the length direction of the medicine chamber 2, and the folding and stretching distance of the foldable corrugated sheet is the compression stroke.

[0072] After the agent chamber 2 is set as a bellows structure, the material hardness of the agent chamber 2 must be increased (otherwise the bellows structure cannot be formed). Therefore, after the fire extinguishing agent is squeezed, it is difficult to cause radial deformation of the agent chamber 2, so the agent chamber 2 will not be squeezed with the inner wall of the spray container 1, thereby avoiding the phenomenon of the piston 11 being stuck.

[0073] Example 6

[0074] Reference Figure 1-Figure 6 shown.

[0075] A high-pressure water fire extinguishing system for student dormitory fires includes an alarm component 7, which is in communication with a detection component 3. The alarm component 7 is specifically a buzzer alarm. When the detection component 3 determines that a fire risk has occurred, the alarm component 7 sounds an alarm to remind relevant personnel to cut off power in time to avoid substantial combustion.

[0076] The alarm component 7 of this embodiment is different from the alarm of the fire extinguishing system in the prior art. The fire extinguishing system of the current school dormitory also has an alarm function, but this alarm function is to remind relevant personnel that a fire has occurred and to escape or extinguish the fire as soon as possible. In this embodiment, the alarm component 7 reminds relevant personnel that a fire is about to occur and to cut off the power as soon as possible to avoid the development of the fire. The fire source may have been extinguished by the fire-fighting agent, but the short circuit phenomenon of the circuit still exists. If the power is not cut off in time, it is very likely that the fire will re-ignite.

[0077] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or a specific area.

[0078] In the description of the embodiments of the present utility model, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0079] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0081] In the description of the embodiments of the present utility model, it is necessary to understand that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0082] In the description of the embodiments of the present invention, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship. Although the embodiments of the present invention have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-pressure water fire extinguishing system for student dormitory fires, characterized in that: include: The spray container is a cylindrical structure with a piston inside. One end of the spray container has a first port connected to the fire protection pipeline, and the other end has a second port. The agent chamber is made of a flexible material, contains a fire extinguishing agent, and is arranged inside the spray container; Wherein, the medicine cavity has a first nozzle, and the first nozzle faces the second port; Wherein, the fire extinguishing agent is a non-conductive liquid fire extinguishing agent; Wherein, the second port has a blocking structure for blocking the first nozzle; Wherein, one end of the piston abuts against the medicine chamber, and the other end blocks the fire water, so that the pressure of the fire water acts on the medicine chamber; Wherein, the blocking structure has a temperature-sensitive glass ball, and when the temperature-sensitive glass ball breaks, the blocking of the first nozzle by the blocking structure is released; The spray container has a closed fine water mist nozzle, the closed fine water mist nozzle is connected to the first nozzle, and the blocking structure is formed on the closed fine water mist nozzle; The side wall of the spray container is provided with a second nozzle, and after the piston passes through the second nozzle, the fire water is sprayed out from the second nozzle.

2. A high-pressure water fire extinguishing system for student dormitory fires according to claim 1, characterized in that: Also includes: Detection components, used to detect temperature, and / or fire light, and / or smoke volume, to determine whether a fire risk occurs; A trigger component, fixedly connected to the blocking structure, used to break the temperature-sensitive glass ball; The detection component is in communication connection with the trigger component. When the detection component determines that a fire risk has occurred, the trigger component is activated to break the temperature-sensitive glass ball.

3. A high-pressure water fire extinguishing system for student dormitory fires according to claim 2, characterized in that: The trigger component inside the spray container is configured as a heating coil, which is sleeved on the outside of the temperature-sensitive glass ball.

4. A high-pressure water fire extinguishing system for student dormitory fires according to claim 2, characterized in that: The trigger component is configured as a push-pull electromagnet, the iron core of which is directly opposite to the middle area of ​​the temperature-sensitive glass ball. When the electromagnet is attracted, the iron core hits the temperature-sensitive glass ball.

5. A high-pressure water fire extinguishing system for student dormitory fires according to claim 4, characterized in that: It also includes a normally open electromagnetic valve, which is arranged on the fire-fighting pipeline and is used to close the spraying of fire-fighting water.

6. A high-pressure water fire extinguishing system for student dormitory fires according to claim 3 or 4, characterized in that: The middle section of the medicine chamber is configured as a bellows, and the length direction of the bellows is parallel to the length direction of the spray container to form a compression stroke; The compression stroke is the movement stroke along the length of the spray container.

7. A high-pressure water fire extinguishing system for student dormitory fires according to claim 6, characterized in that: The fire extinguishing agent adopts perfluorohexanone.

8. A high-pressure water fire extinguishing system for student dormitory fires according to claim 7, characterized in that: include: The alarm component is communicatively connected with the detection component.

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