High and large space gas fire extinguishing system with efficient gasification function
By installing four fire extinguishing pipes and an intelligent control system in the high-ceilinged space, the problems of difficult construction and uneven fire extinguishing were solved, achieving a rapid and uniform fire extinguishing effect and protecting equipment safety.
Patent Information
- Application Number
- CN202423281649.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing gas fire suppression systems for large spaces suffer from problems such as difficult construction, uneven release of extinguishing agents, and equipment frost damage, making them unable to effectively prevent the spread of fire and protect equipment.
Four fire extinguishing pipelines are arranged with nozzles at intervals from bottom to top. Combined with a constant-pressure storage high-pressure gas fire extinguishing device, fire monitoring and control device, intelligent fire extinguishing control is achieved, reducing construction difficulty and improving the uniformity and efficiency of fire extinguishing agent distribution.
It reduces the difficulty of constructing fire extinguishing pipes and nozzles, ensures that the extinguishing agent quickly reaches the design concentration, avoids equipment freezing damage, and improves fire extinguishing effect and safety.
Smart Images
Figure CN223874299U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fire fighting equipment, more particularly to a high and big space gas fire extinguishing system of high efficiency gasification. BACKGROUND
[0002] The gas fire extinguishing system is an important fire fighting equipment, and is mainly applied to various buildings, industrial and public facilities fields.
[0003] For high and big dangerous chemical warehouse and valve hall of converter station and other major dangerous source places, not only have high and big space, but also store a large amount of dangerous chemicals or high-voltage electrical equipment, therefore, the high and big space gas fire extinguishing system adopts full submersion gas fire extinguishing mode to carry out rapid and effective fire extinguishing.
[0004] The key of full submersion gas fire extinguishing design lies in the following two points: first, the fire extinguishing concentration is formed rapidly, so as to avoid the fire expansion and miss the best fire extinguishing opportunity; second, the uniform concentration of fire extinguishing agent distribution in the fire extinguishing protection area is ensured, and the full submersion and dead angle-free fire extinguishing effect is ensured.It needs to be explained that the above-mentioned fire extinguishing protection area is a limited closed space meeting the requirements of the full submersion gas fire extinguishing system, that is, the place needing to use the gas fire extinguishing.
[0005] However, in the process of realizing the utility model, it is found that the existing high and big space gas fire extinguishing system has the following shortcomings:
[0006] 1. The high and big space place generally has large equipment, and the gas fire fighting pipeline and the nozzle arrangement construction are difficult.
[0007] 2. The fire of the high and big space place is a three-dimensional fire, the fire spreads in the vertical direction and its periphery at the same time, and forms a three-dimensional fire spread, therefore, the existing nozzle installation height is too high, so that after the release of the gas fire extinguishing agent, the fire extinguishing concentration of the whole space cannot be ensured to be formed rapidly, which may cause the best fire extinguishing opportunity to be missed.
[0008] 3. The fire extinguishing agent adopts inert gas such as carbon dioxide, and the inert gas is generally stored in a high-pressure cylinder in the form of gas-liquid two phases, and when extinguishing the fire, the inert gas is directly sprayed on the equipment through the nozzle, and the temperature is too low to freeze and damage the equipment.
[0009] In summary, how to solve the above-mentioned any one of the shortcomings of the existing high and big space gas fire extinguishing system is a problem to be solved by the technical personnel in the field at present. Utility model content
[0010] Therefore, the purpose of the utility model is to provide a high and big space gas fire extinguishing system of high efficiency gasification, which can reduce the fire fighting pipeline and nozzle arrangement construction difficulty, and also improve the fire extinguishing effect.
[0011] To achieve the above object, the utility model provides the following technical scheme:
[0012] A high and big space gas fire extinguishing system of high efficiency gasification is applied to a fire extinguishing protection area, comprising:
[0013] Four fire extinguishing pipes are respectively arranged in four corners of the fire extinguishing protection area and extend from the bottom to the top of the fire extinguishing protection area, and a plurality of spray heads are arranged on the fire extinguishing pipes from the bottom to the top of the fire extinguishing protection area.
[0014] A fire extinguishing device is arranged outside the fire extinguishing protection area and is used for storing high-pressure gas fire extinguishing agent at a constant pressure, and the gas outlet end of the fire extinguishing device is provided with a master control valve and is connected to the bottom end of the four fire extinguishing pipes.
[0015] A fire monitoring device is arranged in the fire extinguishing protection area and is used for monitoring whether a fire occurs in the fire extinguishing protection area in real time.
[0016] A control device is signal connected to the fire monitoring device and the master control valve.
[0017] Preferably, the fire extinguishing pipe comprises a vertical pipe section and a horizontal pipe section, the vertical pipe section is vertically laid in the corner of the fire extinguishing protection area, the horizontal pipe section is horizontally laid on the top of the fire extinguishing protection area and extends to the center position, and the vertical pipe section and the horizontal pipe section are both provided with a plurality of spray heads arranged at intervals along the length direction.
[0018] Preferably, the gas outlet end of the fire extinguishing device is connected to a main pipe, the master control valve is arranged on the main pipe, one end of the main pipe away from the fire extinguishing device is connected to a ring pipe, and the ring pipe is arranged around the bottom of the fire extinguishing protection area and is connected to the bottom end of the four fire extinguishing pipes.
[0019] Preferably, a first selection valve is arranged at the position lower than the lowest spray head of the fire extinguishing pipe, and the first selection valve is signal connected to the control device.
[0020] Preferably, a plurality of air detection devices signal connected to the control device are further arranged in the space of the fire extinguishing protection area, and the plurality of air detection devices are used for detecting the oxygen concentration and / or gas fire extinguishing agent concentration in the fire extinguishing protection area in real time.
[0021] Preferably, four high-efficiency gasification devices are further arranged, the four high-efficiency gasification devices are respectively arranged at the bottom of the four corners of the fire extinguishing protection area and are connected to the bottom of the four fire extinguishing pipes through a gas conveying pipe, and a second selection valve signal connected to the control device is arranged on the gas conveying pipe.
[0022] Preferably, a plurality of environment monitoring devices connected with the control device are further included, and the plurality of environment monitoring devices are evenly arranged in the fire extinguishing protection area for real-time monitoring of the fire extinguishing protection area.
[0023] Preferably, the communication position of the gas pipeline with the fire extinguishing pipeline is lower than the first selection valve.
[0024] The high and large space gas fire extinguishing system with efficient gasification has the following beneficial effects:
[0025] 1. The four fire extinguishing pipelines are arranged at four corners of the fire extinguishing protection area, which can greatly save space, and the built place does not need to be reconstructed, especially for a place with large equipment, thereby reducing the construction difficulty of the fire extinguishing pipeline and the arrangement of the upper spray head.
[0026] 2. A plurality of spray heads are arranged at the four corners of the fire extinguishing protection area from the bottom to the top, which can realize layered spraying of the gas fire extinguishing agent in the height direction of the fire extinguishing protection area, so that after the gas fire extinguishing agent is released at the initial stage of the fire, the gas fire extinguishing agent can quickly reach the fire extinguishing design concentration in the fire extinguishing protection area, thereby avoiding missing the best fire extinguishing opportunity and improving the fire extinguishing effect.
[0027] 3. After the gas fire extinguishing agent is sprayed by the fire extinguishing device, the gas fire extinguishing agent moves upward along the fire extinguishing pipelines and is distributed through the spray heads layer by layer, which can increase the contact area of the gas fire extinguishing agent and air, improve the heat exchange efficiency of the gas fire extinguishing agent and air, thereby accelerating the temperature rise of the gas fire extinguishing agent, and further avoiding freezing and damaging the equipment due to the too low temperature of the gas fire extinguishing agent during fire extinguishing. BRIEF DESCRIPTION OF DRAWINGS
[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.
[0029] Figure 1 It is a schematic diagram of the high and large space gas fire extinguishing system with efficient gasification provided by the present application.
[0030] Reference signs:
[0031] 1-fire extinguishing pipeline; 2-spray head; 3-fire extinguishing device; 4-master control valve; 5-first selection valve; 6-efficient gasification device; 7-second selection valve; 8-main pipeline; 9-circumferential pipeline; 10-fire extinguishing protection area;
[0032] 11-vertical pipe section; 12-horizontal pipe section. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.
[0034] The core of the utility model is to provide a kind of high and big space gas fire extinguishing system of high efficiency gasification, which can reduce the difficulty of fire-fighting pipeline and nozzle arrangement construction, and also improve the fire extinguishing effect.
[0035] It should be noted that in the present embodiment, the orientation or positional relationship indicated by "up", "down" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first", "second", "third" are only used to describe the effect, and cannot be understood as indicating or implying relative importance.
[0036] Please refer to Figure 1 The present application provides a kind of high and big space gas fire extinguishing system of high efficiency gasification, it is applied to fire extinguishing protection area 10, including fire extinguishing pipeline 1, fire extinguishing device 3, fire monitoring device and control device.
[0037] Four fire extinguishing pipelines 1 are respectively arranged in the four corners of fire extinguishing protection area 10 and are extended from the bottom to the top of fire extinguishing protection area 10, and a plurality of nozzles 2 are arranged on the fire extinguishing pipeline 1 from the bottom to the top of fire extinguishing protection area 10.
[0038] It should be noted that fire extinguishing protection area 10 refers to a closed place that needs to use gas fire extinguishing, and for places with large equipment, especially converter station valve hall, large equipment occupies a large space of fire extinguishing protection area 10, and the four corners of fire extinguishing protection area 10 cannot accommodate medium and large equipment, therefore, the corners of fire extinguishing protection area 10 have space to arrange fire extinguishing pipeline 1.
[0039] The four fire extinguishing pipes 1 are arranged at four corners of the fire extinguishing protection area 10, and the bottom ends of the four fire extinguishing pipes 1 are located at the bottom of the fire extinguishing protection area 10, and the top ends are upwardly extended to the top of the fire extinguishing protection area 10, so that the fire extinguishing pipes 1 occupy a large height space of the fire extinguishing protection area 10. In addition, a plurality of spray heads 2 are arranged on each fire extinguishing pipe 1, and the spray heads 2 are used for spraying the gaseous fire extinguishing agent in the fire extinguishing pipe 1. The plurality of spray heads 2 are arranged at intervals from the bottom to the top of the fire extinguishing protection area 10, so that the gaseous fire extinguishing agent can be sprayed in layers in the height direction of the fire extinguishing protection area 10, which is beneficial to the rapid diffusion of the gaseous fire extinguishing agent to the fire extinguishing design concentration in the fire extinguishing protection area 10.
[0040] The fire extinguishing device 3 is used for storing the high-pressure gaseous fire extinguishing agent at a constant pressure. The fire extinguishing device 3 is arranged outside the fire extinguishing protection area 10, and the gas outlet end of the fire extinguishing device 3 is provided with a total control valve 4 and is connected to the bottom ends of the four fire extinguishing pipes 1.
[0041] It should be noted that, since there are many dangerous chemical substances that will explode or catch fire when encountering water during fire extinguishing, the gaseous fire extinguishing agent generally uses an inert gas with more stable chemical properties for fire extinguishing, such as carbon dioxide which is most commonly used. In addition, the fire extinguishing device 3 stores the high-pressure gaseous fire extinguishing agent at a constant pressure, so as to be able to quickly release the gaseous fire extinguishing agent and ensure safe and stable transportation or storage of the gaseous fire extinguishing agent. Therefore, the application can use a high-pressure carbon dioxide fire extinguishing device 3 stored at a constant pressure. The specific structure of the device can refer to the prior art, which is not the improvement focus of the application, and will not be described in detail herein.
[0042] It should be particularly pointed out that the pressure of the fire extinguishing device 3 is large when releasing the gaseous fire extinguishing agent. If the fire extinguishing device 3 leaks or accidentally releases, it will endanger the operating personnel and equipment in the fire extinguishing protection area 10. Therefore, the fire extinguishing device 3 is arranged outside the fire extinguishing protection area 10, which can maximize the safety of the operating personnel and equipment.
[0043] The gas outlet end of the fire extinguishing device 3 is provided with a total control valve 4 for controlling the start and stop of the release of the gaseous fire extinguishing agent by the fire extinguishing device 3. The bottom ends of the four fire extinguishing pipes 1 can be connected to the gas outlet end of the fire extinguishing device 3 through pipes, so as to realize the air supply of the fire extinguishing device 3 to the four fire extinguishing pipes 1.
[0044] The fire monitoring device is arranged in the fire extinguishing protection area 10 and is used for monitoring whether a fire occurs in the fire extinguishing protection area 10 in real time.
[0045] The type of the fire monitoring device can be selected according to the fire extinguishing design requirements of the place (i.e. the fire protection area 10). For example, for a place where a large amount of smoke is generated in the early stage of fire, the fire monitoring device is preferably an image type smoke sensing fire monitoring device. The image type smoke sensing fire monitoring device can detect early stage fire smoke as a pre-warning fire signal to link the subsequent high-efficiency gasification device 6 for inertization protection, which can greatly improve the monitoring effect of the fire monitoring device, and thus is beneficial to improving the timeliness and effectiveness of fire extinguishing. Of course, the fire monitoring device can also use an infrared smoke fire monitoring device or an air suction type smoke sensing fire monitoring device, and the type is not unique.
[0046] Preferably, the fire monitoring device is provided in multiple numbers, and the multiple fire monitoring devices are uniformly arranged in the space of the fire protection area 10. Specifically, multiple layers of detection zones are arranged at intervals in the height direction of the fire protection area 10, and each layer of detection zone has multiple fire monitoring devices uniformly arranged around the fire protection area 10. In this way, the problem of detection dead zone in the fire protection area 10 can be avoided, and the situation of untimely fire extinguishing can be avoided.
[0047] The control device is signal connected with the fire monitoring device and the master control valve 4.
[0048] The fire monitoring device is signal connected with the control device to transmit the fire monitoring signal to the control device in real time. The control device compares the fire monitoring signal fed back by the fire monitoring device with the preset discharge setting threshold value according to the preset control algorithm, and controls the opening and closing of the master control valve 4 according to the comparison result, so as to realize intelligent fire extinguishing control.
[0049] The above-mentioned high-efficiency gasification high and large space gas fire extinguishing system has the following advantages: first, the four fire extinguishing pipelines 1 are arranged at the four corners of the fire protection area 10, which has a simple structure and can greatly save space, and does not need to modify the built place, especially the place with large equipment, thereby reducing the construction difficulty of the fire extinguishing pipeline and the upper spray head 2; second, the fire protection area 10 can be discharged in layers in the height direction, so that after the gas fire extinguishing agent is released in the early stage of fire, the gas fire extinguishing agent can quickly reach the fire extinguishing design concentration in the fire protection area 10, thereby avoiding missing the best fire extinguishing opportunity and improving the fire extinguishing effect; third, after the fire extinguishing device 3 discharges the gas fire extinguishing agent, the gas fire extinguishing agent moves upward along the fire extinguishing pipelines 1 and is branched by the layer-by-layer spray heads 2, which can increase the contact area of the gas fire extinguishing agent with air to improve the heat exchange efficiency of the gas fire extinguishing agent with air, thereby accelerating the temperature rise of the gas fire extinguishing agent, and avoiding freezing and damaging the equipment due to too low temperature of the gas fire extinguishing agent during fire extinguishing.
[0050] For the specific structure and installation mode of the fire extinguishing pipeline 1, please refer to Figure 1, the fire extinguishing pipeline 1 comprises vertical pipe sections 11 and horizontal pipe sections 12, the vertical pipe sections 11 are vertically laid in the corners of the fire extinguishing protection area 10, the horizontal pipe sections 12 are horizontally laid on the top of the fire extinguishing protection area 10 and extend to the central position thereof, and the vertical pipe sections 11 and the horizontal pipe sections 12 are both provided with a plurality of nozzles 2 arranged at intervals along the length direction thereof.
[0051] Specifically, the vertical pipe sections 11 are laid in the corners of the fire extinguishing protection area 10, the bottom end of the vertical pipe sections 11 is located at the bottom of the fire extinguishing protection area 10, the top end extends upward to the top of the fire extinguishing protection area 10 and is integrated with the front end of the horizontal pipe sections 12, and the rear end of the horizontal pipe sections 12 extends horizontally to the central position of the fire extinguishing protection area 10, so that the vertical pipe sections 11 and the horizontal pipe sections 12 form the inverted L-shaped fire extinguishing pipeline 1 arranged in the corners of the fire extinguishing protection area 10, and the plurality of nozzles 2 can be arranged from the bottom corner to the top central position of the fire extinguishing protection area 10.
[0052] The fire extinguishing pipeline 1 is arranged in the above manner, so that after the gas fire extinguishing agent is released by the fire extinguishing device 3, the gas fire extinguishing agent can be quickly and uniformly distributed in the fire extinguishing protection area 10, and the fire extinguishing protection area 10 can reach the design concentration for extinguishing fire more quickly in the initial stage of fire.
[0053] Regarding the specific implementation mode of the fire extinguishing device 3 for supplying gas to the four fire extinguishing pipelines 1, on the basis of the above embodiment, please refer to Figure 1 The gas outlet end of the fire extinguishing device 3 is connected with the main pipeline 8, the total control valve 4 is arranged on the main pipeline 8, one end of the main pipeline 8 away from the fire extinguishing device 3 is connected with the annular pipeline 9, and the annular pipeline 9 is arranged around the bottom of the fire extinguishing protection area 10 and is communicated with the bottom end of the four fire extinguishing pipelines 1.
[0054] Specifically, the annular pipeline 9 is matched with the shape of the bottom of the fire extinguishing protection area 10, the annular pipeline 9 is laid around the bottom of the fire extinguishing protection area 10, the annular pipeline 9 is correspondingly inserted and communicated with the bottom end of the fire extinguishing pipeline 1 at the positions corresponding to the four corners of the fire extinguishing protection area 10, and the annular pipeline 9 is communicated with the gas inlet end of the fire extinguishing device 3 through the main pipeline 8, and the total control valve 4 is arranged on the main pipeline 8. In this way, when the total control valve 4 is opened, the gas fire extinguishing agent in the fire extinguishing device 3 can flow into the annular pipeline 9 through the main pipeline 8, and then be distributed to the four fire extinguishing pipelines 1 through the annular pipeline 9.
[0055] The main pipeline 8 and the annular pipeline 9 are arranged in the above manner, since the main pipeline 8 is located outside the fire extinguishing protection area 10 and the annular pipeline 9 is arranged around the bottom of the fire extinguishing protection area 10, the space of the fire extinguishing protection area 10 is saved, and the arrangement is facilitated, especially in the places with large equipment which have been built.
[0056] In order to realize local fire extinguishing of the fire extinguishing protection area 10, on the basis of the above embodiment, please refer to Figure 1, the position of the fire extinguishing pipeline 1 below the lowest spray head 2 is provided with a first selection valve 5, and the first selection valve 5 is signal connected to the control device. In this way, if the fire extinguishing of a specific area of the fire protection area 10 is needed, at least one fire extinguishing pipeline 1 adjacent to the specific area is selected, and the first selection valve 5 on the fire extinguishing pipeline 1 is opened.
[0057] Regarding how to accurately and effectively achieve local fire extinguishing of the protection area, the following two embodiments are provided:
[0058] In one embodiment, the present application has a plurality of fire monitoring devices for monitoring the state of the fire extinguishing protection area 10 in real time.
[0059] Therefore, after completing a fire extinguishing operation, the fire monitoring device can be used to continue monitoring the state of the fire extinguishing protection area 10, the control device obtains the fire monitoring signals of the plurality of fire monitoring devices, and if any fire monitoring signal reaches a preset abnormal threshold, it indicates that there is a local area in the fire extinguishing protection area 10 that has not been extinguished. The control device opens the first selection valve 5 on the fire extinguishing pipeline 1 adjacent to the unextinguished local area, and then opens the master control valve 4, thereby accurately and effectively spraying the fire extinguishing agent to the unextinguished local area, and further saving the fire extinguishing agent while greatly improving the fire extinguishing effect.
[0060] In another embodiment, the present application further includes a plurality of air detection devices signal connected to the control device, and the plurality of air detection devices are evenly arranged in the space of the fire extinguishing protection area 10 for real-time detection of the oxygen concentration and / or gas fire extinguishing agent concentration in the fire extinguishing protection area 10.
[0061] Therefore, after completing a fire extinguishing operation, the air detection device can also be used to analyze the oxygen concentration and / or gas fire extinguishing agent concentration in the air in the fire extinguishing protection area 10, and transmit the gas concentration signal to the control device. If any gas concentration signal is an oxygen concentration signal and is higher than a preset oxygen concentration threshold, it indicates that the oxygen concentration in the area where the air detection device that sends the abnormal oxygen concentration signal is located is too high, and there is a risk of fire recurrence. The control device opens the first selection valve 5 on the fire extinguishing pipeline 1 of the oxygen concentration abnormal area, and then opens the master control valve 4; and / or, if any gas concentration signal is a fire extinguishing agent concentration signal and is lower than a preset fire extinguishing agent concentration threshold, it indicates that the fire extinguishing agent concentration in the area where the air detection device that sends the abnormal fire extinguishing agent concentration signal is located is too low, and there is a risk of fire recurrence. The control device opens the first selection valve 5 on the fire extinguishing pipeline 1 of the fire extinguishing agent concentration abnormal area, and then opens the master control valve 4. The above two methods can accurately and effectively spray the fire extinguishing agent to the area prone to recurrence, thereby also saving the fire extinguishing agent while greatly improving the fire extinguishing effect.
[0062] In order to greatly reduce the fire risk of the fire extinguishing protection area 10, on the basis of any of the above embodiments, please refer toFigure 1 The application also comprises four high-efficiency gasification devices 6, which are respectively arranged at the bottom of the four corners of the fire extinguishing protection area 10 and are in communication with the bottom of the four fire extinguishing pipes 1 through the gas conveying pipes, and the second selection valves 7 connected with the control device are arranged on the gas conveying pipes.
[0063] It can be understood that the high-efficiency gasification device 6 can efficiently convert liquid substances into gaseous substances. Therefore, if the second selection valve 7 and the total control valve 4 are opened, the gas-liquid two-phase extinguishing agent released by the fire extinguishing device 3 is gasified through the high-efficiency gasification device 6 and then sprayed into the bottom of the fire extinguishing protection area 10. The opening time of the second selection valve 7 is controlled until the gaseous extinguishing agent gradually diffuses into the space of the fire extinguishing protection area 10 to reduce the proportion of oxygen to below the minimum required to support combustion, thereby achieving inerting protection to prevent fire or explosion.
[0064] Regarding when to carry out inerting protection, on the basis of the above-mentioned embodiment, the application also comprises a plurality of environment monitoring devices connected with the control device, which are evenly arranged in the space of the fire extinguishing protection area 10 for real-time monitoring of the fire extinguishing protection area 10.
[0065] It should be noted that the environment monitoring device can be an early smoke monitoring device, a temperature-sensing fire monitoring device, or a combustible gas monitoring device, and the type is not unique as long as it can monitor the environment in the fire extinguishing protection area 10 before a fire occurs.
[0066] Therefore, before the fire extinguishing spraying operation of the fire extinguishing protection area 10, the plurality of environment monitoring devices are used to real-time detect the fire extinguishing protection area 10 and transmit the environment monitoring signal to the control device. Taking the temperature-sensing fire monitoring device as an example, the plurality of temperature-sensing fire monitoring devices transmit the temperature signal to the control device in real time. The preset temperature threshold must be lower than the minimum ignition point of the fire extinguishing protection area 10. If any temperature signal is higher than the preset temperature threshold, it indicates that there is a fire or explosion risk in the fire extinguishing protection area 10, and then the control device opens the four second selection valves 7 to spray the gaseous extinguishing agent into the fire extinguishing protection area 10, thereby effectively preventing the occurrence of fire.
[0067] It can be understood that, as shown in Figure 1 the communication position of the gas conveying pipe with the fire extinguishing pipe 1 is lower than the first selection valve 5. When carrying out inerting protection, only the total control valve 4 and the second selection valve 7 need to be opened, and the first selection valve 5 does not need to be opened, so as to realize the inerting protection of the fire extinguishing protection area 10 between the fire extinguishing spraying operations.
[0068] Regarding the specific control method of the high-efficiency gasification gaseous fire extinguishing system applied to the above-mentioned embodiment, the application comprises the following steps:
[0069] S1: obtaining fire monitoring signals of multiple fire monitoring devices;
[0070] S2: when at least two fire monitoring signals reach a preset fire extinguishing threshold value at the same time, opening four first selection valves, then opening a total control valve, reaching a full-area spraying setting time, closing the total control valve, and then closing the four first selection valves.
[0071] It should be noted that the preset fire extinguishing threshold value can be adaptively selected by the user according to the actual situation. For example, if the fire monitoring device is a temperature-sensitive smoke monitoring device, the preset fire extinguishing threshold value can be set according to the dangerous temperature of the dangerous chemical or electrical equipment in the fire extinguishing protection area 10. When the monitoring temperature reaches the dangerous temperature, the control device determines to start the fire extinguishing program. In addition, the full-area spraying setting time can be obtained by quantitative fire simulation of dangerous chemical plane warehouse and stereoscopic warehouse and the like, and the time from the fire entering the rapid development stage to the full combustion stage is set as the full-area spraying setting time, so as to extinguish the fire comprehensively before the fire develops to the full combustion stage.
[0072] S3: obtaining gas concentration signals of multiple air monitoring devices, when any gas concentration signal is an oxygen concentration signal and is higher than a preset oxygen concentration threshold value, or when any gas concentration signal is an extinguishing agent concentration signal and is lower than a preset extinguishing agent concentration threshold value, opening a first selection valve on the extinguishing pipeline adjacent to the abnormal gas concentration area, then opening a total control valve, reaching a local-area spraying setting time, closing the total control valve, and then closing the opened first selection valve.
[0073] It should be noted that the air monitoring device can be composed of an oxygen concentration analyzer and / or an extinguishing agent concentration analyzer (such as a carbon dioxide concentration analyzer), so as to determine whether there is a risk of rekindling according to the oxygen and / or carbon dioxide concentration in the fire extinguishing protection area 10. The oxygen concentration threshold value and the extinguishing agent concentration threshold value also need to be adaptively selected according to the specific electrical equipment or dangerous chemical in the fire extinguishing protection area 10. In addition, the above-mentioned local-area spraying setting time should be shorter than the full-area spraying setting time, for example, the full-area spraying setting time is 60s, and the local-area spraying setting time is 30s.
[0074] Before the above step S1, the following step is further included:
[0075] S0: obtaining environment monitoring signals of multiple environment monitoring devices, when any environment monitoring signal is higher than a preset threshold value, opening four second selection valves, then opening a total control valve, reaching an inerting protection setting time, closing the total control valve, and then closing the four second selection valves.
[0076] It should be noted that before the fire extinguishing spray operation of the fire extinguishing protection area 10, as long as an environment monitoring signal higher than a preset threshold is obtained, indicating that the fire extinguishing protection area 10 has a fire or explosion risk, the four second selection valves 7 are also opened, and the four high-efficiency gasification devices 6 can be used to spray the gas fire extinguishing agent to the fire extinguishing protection area 10, thereby effectively preventing the occurrence of fire. In addition, since the gasification speed of the high-efficiency gasification device is relatively slow compared with the speed of the spray head 2, the inerting protection setting time is relatively long, so that the gas fire extinguishing agent slowly diffuses and fills the space in the fire extinguishing protection area 10.
[0077] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between the entities.
[0078] The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other.
[0079] The above has carried out the detailed introduction to the high and large space gas fire extinguishing system of the high-efficiency gasification provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.
Claims
1. A high-efficiency gasification tall space gas fire extinguishing system applied to a fire extinguishing protection area (10), characterized in that, The application relates to a fire extinguishing device for a fire extinguishing protection area (10), which comprises the following parts: four fire extinguishing pipes (1) arranged at four corners of the fire extinguishing protection area (10) and extending from the bottom to the top of the fire extinguishing protection area (10), wherein a plurality of nozzles (2) are arranged on the fire extinguishing pipes (1) at intervals from the bottom to the top of the fire extinguishing protection area (10); a fire extinguishing device (3) for storing high-pressure gas fire extinguishing agents at a constant pressure, wherein the fire extinguishing device (3) is arranged outside the fire extinguishing protection area (10), and the gas outlet end of the fire extinguishing device (3) is provided with a master control valve (4) and is connected to the bottom end of the four fire extinguishing pipes (1) respectively; a plurality of fire monitoring devices arranged uniformly in the fire extinguishing protection area (10) for monitoring whether a fire occurs in the fire extinguishing protection area (10) in real time; a control device connected to the fire monitoring devices and the master control valve (4).
2. The high-efficiency gasified high-ceiling space gas fire extinguishing system according to claim 1, characterized in that, The fire extinguishing pipe (1) comprises a vertical pipe section (11) and a horizontal pipe section (12), the vertical pipe section (11) is vertically laid in the corner of the fire extinguishing protection area (10), the horizontal pipe section (12) is horizontally laid on the top of the fire extinguishing protection area (10) and extends to the central position of the fire extinguishing protection area (10), and the vertical pipe section (11) and the horizontal pipe section (12) are both provided with a plurality of nozzles (2) arranged at intervals along the length direction.
3. The high efficiency gasification high wide open space gas fire suppression system of claim 1 wherein, The gas outlet end of the fire extinguishing device (3) is connected to a main pipe (8), the master control valve (4) is arranged on the main pipe (8), and the end of the main pipe (8) away from the fire extinguishing device (3) is connected to a ring pipe (9) which is arranged around the bottom of the fire extinguishing protection area (10) and is connected to the bottom end of the four fire extinguishing pipes (1).
4. The high efficiency gasification high wide open space gas fire suppression system of claim 1 wherein, The position of the fire extinguishing pipe (1) below the lowest nozzle (2) is provided with a first selection valve (5), and the first selection valve (5) is connected to the control device.
5. The high efficiency gasification high wide open space gas fire suppression system of claim 4 wherein, The application further comprises a plurality of air detection devices connected to the control device, the plurality of air detection devices are arranged uniformly in the space of the fire extinguishing protection area (10) and are used for detecting the oxygen concentration and / or gas fire extinguishing agent concentration in the fire extinguishing protection area (10) in real time.
6. The high efficiency gasification high wide open space gas fire suppression system of claim 4 wherein, The application further comprises four high-efficiency gasification devices (6), the four high-efficiency gasification devices (6) are arranged at the bottom of the four corners of the fire extinguishing protection area (10) and are connected to the bottom of the four fire extinguishing pipes (1) through gas conveying pipes respectively, and the gas conveying pipes are provided with second selection valves (7) connected to the control device.
7. The high efficiency gasification high wide open space gas fire suppression system of claim 6 wherein, The application further comprises a plurality of environment monitoring devices connected to the control device, the plurality of environment monitoring devices are arranged uniformly in the space of the fire extinguishing protection area (10) and are used for monitoring the fire extinguishing protection area (10) in real time.
8. The high efficiency gasification high wide open space gas fire suppression system of claim 6 wherein, The connection position of the gas conveying pipe and the fire extinguishing pipe (1) is below the first selection valve (5).