Gas fire extinguishing system, fire extinguishing method and fire fighting truck

Abstract

The invention relates to the technical field of emergency rescue equipment, and discloses a gas fire extinguishing system, a fire extinguishing method and a fire fighting truck. The gas fire extinguishing system comprises a compressed air supply device, a nitrogen generation device, a nitrogen output device and a control device; the nitrogen making device is connected with the compressed air supply device through an air supply pipeline; the nitrogen output device is connected with the nitrogen making device through a gas output pipeline, and a purity control valve is arranged on the gas output pipeline; a nitrogen fire extinguishing database is arranged in the control device, and the control device is configured to call nitrogen purity information required by fire extinguishing in the nitrogen fire extinguishing database according to the fire information and control the air supply amount of the compressed air supply device and / or the opening degree of the purity control valve according to the nitrogen purity information so as to adjust the nitrogen supply purity. According to the gas fire extinguishing system, automatic matching of nitrogen purity can be carried out according to fire information, diversified fire extinguishing requirements are met, energy waste is reduced, and the fire extinguishing effect is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of emergency rescue equipment, and specifically relates to a gas fire extinguishing system, a fire extinguishing method and a fire truck. Background Art

[0002] Continuous waterless and lossless fire extinguishing is a difficult problem for emergency rescue fire-fighting equipment. For example, confined spaces such as wine cellars, computer rooms, museums and libraries require lossless fire extinguishing. Fires involving active metals such as lithium and sodium, and other hazardous chemicals that are flammable and explosive when exposed to water, moisture, or other hazards require waterless fire extinguishing.

[0003] Inert gases such as nitrogen are green and environmentally friendly and are the most preferred medium for non-destructive and waterless fire extinguishing. In existing emergency rescue technologies, nitrogen is stored in fixed or vehicle-mounted high-pressure containers and is transported to the site after decompression when in use. Limited by the capacity of high-pressure nitrogen cylinders, continuous positive pressure supply cannot be achieved when dealing with fires in large confined spaces such as warehouses, resulting in poor fire extinguishing efficiency. At the same time, nitrogen storage takes up a lot of space and requires certain maintenance costs.

[0004] Therefore, the prior art provides a vehicle-mounted fire extinguishing system equipped with a nitrogen preparation system. The system extinguishes fires by preparing nitrogen of uniform purity, so that nitrogen of constant purity is supplied in the face of different fire situations. However, the purity of nitrogen required for extinguishing fires of different chemical substances or combustibles is different. The prior art system cannot adjust the purity in real time according to the fire situation, resulting in energy waste and unsatisfactory fire extinguishing effect. Summary of the invention

[0005] The purpose of the present application is to provide a gas fire extinguishing system, a fire extinguishing method and a fire truck, which are used to solve the problems of the vehicle-mounted fire extinguishing system provided in the prior art, such as the constant purity of nitrogen that cannot be adjusted during the fire extinguishing operation, the single fire extinguishing method, the waste of energy and the unsatisfactory fire extinguishing effect.

[0006] In order to achieve the above-mentioned object, the first aspect of the present application provides a gas fire extinguishing system, comprising:

[0007] Compressed air supply device;

[0008] a nitrogen generating device connected to the compressed air supply device via an air supply pipeline;

[0009] a nitrogen output device connected to the nitrogen production device via a gas output pipeline, wherein a purity control valve is provided on the gas output pipeline; and

[0010] A control device has a built-in nitrogen fire extinguishing database, and the control device is configured to retrieve nitrogen purity information required for fire extinguishing from the nitrogen fire extinguishing database according to fire information, and control the air supply volume of the compressed air supply device and / or the opening of the purity control valve according to the nitrogen purity information.

[0011] As a further improvement of the above technical solution:

[0012] In some embodiments, the compressed air supply device includes an air compressor and an air outlet control valve electrically connected to the control device, wherein the air outlet control valve is arranged on the air outlet side of the air compressor and connected to the nitrogen generator through the air supply pipeline;

[0013] Wherein, the control device is configured to control the rotation speed of the air compressor and / or the opening of the air outlet control valve according to the nitrogen purity information to control the air supply volume.

[0014] In some embodiments, the gas output pipeline is further provided with a purity detector electrically connected to the control device, the purity detector is located downstream of the purity control valve, and is used to detect the nitrogen purity information at the outlet side of the purity control valve;

[0015] Wherein, the control device is further configured to control the opening of the purity control valve according to the nitrogen purity information to adjust the purity of the nitrogen supply.

[0016] In some embodiments, the control device includes a control interface and a control panel, the control interface is used to display and set fire information and nitrogen purity, and the control panel is provided with buttons and indicator lights.

[0017] In some embodiments, the fire information includes the type of burning material.

[0018] In some embodiments, a flow meter is provided on the gas supply pipeline, and the flow meter is located downstream of the purity control valve.

[0019] In some embodiments, the nitrogen output device includes an injection actuator.

[0020] In order to achieve the above-mentioned object, the second aspect of the present application provides a fire extinguishing method, which is applied to the gas fire extinguishing system provided according to the above-mentioned first aspect, and the fire extinguishing method comprises:

[0021] S100: Acquire current fire information, where the fire information includes information on the type of combustibles;

[0022] S200: calling the nitrogen purity information required for fire extinguishing corresponding to the nitrogen fire extinguishing database according to the fire information;

[0023] S300: Controlling the air supply amount of the compressed air supply device and / or controlling the opening of the purity control valve according to the nitrogen purity information to adjust the nitrogen supply purity.

[0024] As a further improvement of the above technical solution:

[0025] In some embodiments, the step S300 further includes:

[0026] S310: Compare the actual nitrogen purity with the preset nitrogen purity to determine whether there is a difference in the nitrogen purity values;

[0027] S320: When there is a difference in the nitrogen purity values, the gas supply amount of the compressed air supply device is corrected by using the nitrogen purity calculation model in the nitrogen fire extinguishing database until the nitrogen purity values ​​reach a consistent level;

[0028] Wherein, in the nitrogen purity calculation model, the nitrogen purity value P0 has been matched with the air supply flow rate Q0 of the compressed air supply device, that is, P0=K1*Q0, K1 is the calculation coefficient;

[0029] The speed of the air compressor in the compressed air supply device is marked as N0, and the corresponding air supply flow rate is Q0. At this time, the calculation formula can be set as: Q0=K2*N0, where K2 is the calculation coefficient;

[0030] The relationship between the nitrogen purity value P0 and the speed N0 of the air compressor is: P0 = K1*K2*N0.

[0031] In order to achieve the above-mentioned purpose, the third aspect of the present application provides a fire truck, comprising the gas fire extinguishing system provided according to the above-mentioned first aspect.

[0032] Compared with the prior art, the present application provides a gas fire extinguishing system, a fire extinguishing method and a fire truck, which at least have the following beneficial effects:

[0033] The gas fire extinguishing system provided by the present application supplies the compressed air required for preparing nitrogen to the nitrogen making device through the compressed air supply device, and the nitrogen prepared by the nitrogen making device is transported to the nitrogen output device through the gas output pipeline, and the nitrogen output device can spray or transport the nitrogen to the fire scene for inerting fire extinguishing. Among them, the control device is equipped with a nitrogen fire extinguishing database. When performing a fire extinguishing operation, the control device can retrieve the nitrogen purity information required for fire extinguishing in the nitrogen fire extinguishing database according to the fire information, and control the air supply of the compressed air supply device and / or control the opening of the purity control valve according to the nitrogen purity information to adjust the air intake or air output of the nitrogen making device to achieve nitrogen purity adjustment. In this way, the gas fire extinguishing system provided by the present application can automatically match the nitrogen purity according to the fire information, and perform adaptive adjustment for different fire information to ensure that the nitrogen purity meets the current fire extinguishing needs and achieve the diversified needs of fire extinguishing, thereby reducing energy waste and improving the fire extinguishing effect.

[0034] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0036] Figure 1 A schematic diagram of the structure of a gas fire extinguishing system provided in an embodiment of the present application;

[0037] Figure 2 A first flow chart of a fire extinguishing method provided in an embodiment of the present application;

[0038] Figure 3 A second flow chart of a fire extinguishing method provided in an embodiment of the present application.

[0039] Description of Reference Numerals

[0040] 100. Compressed air supply device; 110. Air compressor; 120. Air output control valve;

[0041] 200. Nitrogen production device;

[0042] 300, gas supply pipeline;

[0043] 400. Nitrogen output device;

[0044] 500, gas output pipeline;

[0045] 600, purity control valve;

[0046] 700, control device; 710, control interface; 720, control panel; 721, button; 722, indicator light;

[0047] 800. Purity detector;

[0048] 900, flow meter;

[0049] 1000. Power unit. DETAILED DESCRIPTION

[0050] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0051] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0052] Example

[0053] See also Figure 1 , this embodiment provides a gas fire extinguishing system, and in particular, relates to a nitrogen fire extinguishing system, which can achieve non-destructive fire extinguishing.

[0054] It should be noted that nitrogen is green and environmentally friendly and is the most preferred medium for non-destructive and waterless fire extinguishing. As an inert gas medium, nitrogen can not only directly suffocate fires, but also be used as a driving gas source for fire extinguishing agents such as dry powder and foam, playing an important role in the field of emergency rescue.

[0055] like Figure 1 As shown, in this embodiment, the gas fire extinguishing system includes a compressed air supply device 100, a nitrogen generator 200, a nitrogen output device 400 and a control device 700; the compressed air supply device 100 can compress the air in the atmosphere to provide the nitrogen generator 200 with the gas required for nitrogen production. The nitrogen generator 200 is connected to the compressed air supply device 100 through a gas supply pipeline 300. The nitrogen output device 400 is connected to the nitrogen generator 200 through a gas output pipeline 500, and a purity control valve 600 is provided on the gas output pipeline 500.

[0056] It is understandable that the gas output of the nitrogen generator 200 can be adjusted by controlling the opening of the purity control valve 600. When the gas output is reduced, the purity of the nitrogen produced by the nitrogen generator 200 is high; when the gas output is increased, the purity of the nitrogen produced by the nitrogen generator 200 is relatively low.

[0057] It can also be understood that when the gas flow rate supplied by the compressed air supply device 100 is large, the purity of the nitrogen produced by the nitrogen generator 200 is relatively high; when the gas flow rate supplied by the compressed air supply device 100 is small, the purity of the nitrogen produced by the nitrogen generator 200 is relatively low.

[0058] The control device 700 has a built-in nitrogen fire extinguishing database. In this embodiment, the control device 700 is configured to retrieve the nitrogen purity information required for fire extinguishing in the nitrogen fire extinguishing database according to the fire information, and control the gas supply of the compressed air supply device 100 and / or control the opening of the purity control valve 600 according to the nitrogen purity information to adjust the nitrogen supply purity. In order to control the purity of nitrogen more quickly, the control device 700 can control the gas supply of the compressed air supply device 100 and control the opening of the purity control valve 600 at the same time.

[0059] In this way, the gas fire extinguishing system provided in this embodiment supplies the compressed air required for preparing nitrogen to the nitrogen generating device 200 through the compressed air supply device 100, and the nitrogen generated by the nitrogen generating device 200 is transported to the nitrogen output device 400 through the gas output pipeline 500, and the nitrogen output device 400 can spray or transport the nitrogen to the fire scene for inerting fire extinguishing (i.e., using inert gas for fire extinguishing). Among them, the control device 700 is built with a nitrogen fire extinguishing database. When performing a fire extinguishing operation, the control device 700 can retrieve the nitrogen purity information required for fire extinguishing from the nitrogen fire extinguishing database according to the fire information, and control the gas supply of the compressed air supply device 100 and / or control the opening of the purity control valve 600 according to the nitrogen purity information, so as to adjust the air intake or air output of the nitrogen generating device 200, and realize the adjustment of nitrogen purity. Compared with the prior art, the gas fire extinguishing system provided in this embodiment can automatically match the nitrogen purity according to the fire information, and perform adaptive adjustments according to different fire information to ensure that the nitrogen purity meets the current fire extinguishing needs and realize the diversified needs of fire extinguishing, thereby reducing energy waste and improving the fire extinguishing effect.

[0060] In order to more clearly describe the technical solution of the present application, the gas fire extinguishing system provided in this embodiment is described below, specifically as follows:

[0061] The compressed air supply device 100 includes an air compressor 110 electrically connected to the control device 700 and an air outlet control valve 120 . The air outlet control valve 120 is arranged on the air outlet side of the air compressor 110 and connected to the nitrogen generator 200 through the air supply pipeline 300 .

[0062] In some embodiments, the air compressor 110 can be connected to the power device 1000 via a coupling, and the power device 1000 directly provides driving force. The power device 1000 can be a motor or an engine.

[0063] In other embodiments, the air compressor 110 can be connected to an external power device 1000 (engine) through a power take-off device, and driven by the power taken from the external power device 1000.

[0064] In this way, the control device 700 can control the speed of the air compressor 110 and / or the opening of the air outlet control valve 120 according to the nitrogen purity information to control the air supply amount. In the present application, the control device 700 can control the speed of the air compressor 110 and the opening of the air outlet control valve 120 respectively to adjust the air supply amount. Thus, the nitrogen purity is controlled by controlling the air supply amount.

[0065] Optionally, both the gas outlet control valve 120 and the purity control valve 600 can be solenoid valves or electric valves.

[0066] Furthermore, a purity detector 800 electrically connected to the control device 700 is provided on the gas output pipeline 500. The purity detector 800 is located downstream of the purity control valve 600 and is used to detect the nitrogen purity information at the outlet side of the purity control valve 600. The control device 700 is also configured to control the opening of the purity control valve 600 according to the nitrogen purity information to adjust the purity of the nitrogen supply, thereby realizing feedback regulation and improving control accuracy.

[0067] The control device 700 includes a control interface 710 and a control panel 720 . The control interface 710 is used to display and set fire information and nitrogen purity. The control panel 720 is provided with buttons 721 and indicator lights 722 .

[0068] The fire information includes the type of the combustible material. It is understandable that different combustible materials require different nitrogen concentrations for extinguishing fires.

[0069] Furthermore, a flow meter 900 is provided on the gas supply pipeline 300, and the flow meter 900 is located downstream of the purity control valve 600. The flow meter 900 can monitor the nitrogen flow value of the system in real time.

[0070] The nitrogen output device 400 comprises an injection actuator having an injection nozzle, which can directly inject nitrogen to the fire area or connect to an external foaming agent supply system for mixed injection.

[0071] Please also read Figure 2 This embodiment also provides a fire extinguishing method. The fire extinguishing method is applied to the gas fire extinguishing system provided according to the above embodiment. The fire extinguishing method includes the following steps:

[0072] S100: Obtain current fire information, which includes combustible type information. The combustible type information in the fire information can be manually input or set by the firefighting operator in the control interface 710 according to the on-site situation, such as combustible A, combustible B, and combustible C.

[0073] S200: Calling the nitrogen purity information required for fire extinguishing corresponding to the nitrogen fire extinguishing database according to the fire information. The nitrogen fire extinguishing database is built in the program of the control device 700, and the nitrogen fire extinguishing database is calibrated with the corresponding nitrogen purity information required for fire extinguishing according to the combustible A, combustible B and combustible C.

[0074] S300: Control the gas supply volume of the compressed air supply device 100 and / or the opening of the purity control valve 600 according to the nitrogen purity information to adjust the nitrogen supply purity. The gas supply volume and the opening of the purity control valve 600 can be controlled either or both.

[0075] In the above step S200, when there are multiple combustibles at the fire scene, the control device 700 can compare the nitrogen purity information required by different combustibles, and select the nitrogen purity information corresponding to the combustible with the best nitrogen purity requirement as the subsequent control instruction of the control device 700.

[0076] Please also read Figure 3 , the above step S300 further includes:

[0077] S310: Compare the actual nitrogen purity with the preset nitrogen purity to determine whether there is a difference in the nitrogen purity values.

[0078] S320: When there is a difference in the nitrogen purity values, the gas supply amount of the compressed air supply device 100 is corrected by the nitrogen purity calculation model in the nitrogen fire extinguishing database until the nitrogen purity values ​​reach a consistent level.

[0079] In the nitrogen purity calculation model, the nitrogen purity value P0 has been matched with the air supply flow rate Q0 of the compressed air supply device 100, that is, P0 = K1*Q0, K1 is the calculation coefficient;

[0080] The rotation speed of the air compressor 110 in the compressed air supply device 100 is marked as N0, and the corresponding air supply flow rate is Q0. At this time, the calculation formula can be set as: Q0 = K2*N0, K2 is the calculation coefficient;

[0081] The relationship between the nitrogen purity value P0 and the rotation speed N0 of the air compressor 110 is: P0 = K1*K2*N0.

[0082] Furthermore, this embodiment also provides a fire truck, which includes the gas fire extinguishing system provided in the above embodiment.

[0083] Compared with the prior art, the fire truck provided in this embodiment has the following advantages:

[0084] 1. This embodiment establishes a nitrogen fire extinguishing database for different combustibles, which can be called by the control device 700 in actual use, so as to quickly realize the selection of nitrogen fire extinguishing purity.

[0085] 2. In this embodiment, a nitrogen purity calculation model is used. The user can input a preset nitrogen purity value through the control interface 710. The control device 700 calculates the corresponding rotation speed of the air compressor 110 through the nitrogen purity calculation model, thereby quickly controlling the nitrogen production device 200 to produce nitrogen that meets the requirements.

[0086] 3. This embodiment produces nitrogen that meets the fire extinguishing needs of various combustibles based on the nitrogen fire extinguishing database. The nitrogen fire extinguishing database automatically matches the rotation speed of the air compressor 110, the opening of the air supply control valve and the opening of the purity control valve 600, thereby achieving accurate output of nitrogen purity and meeting the diversified needs of fire extinguishing, thereby reducing energy waste and improving fire extinguishing effects.

[0087] It should be noted that in the present application, unless otherwise specified, the terms "upstream", "downstream", "up", "down", "front", "rear", etc. used to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0088] The structure and principle of nitrogen production are well known to those skilled in the art, and are not part of the core improvement of the present application, and will not be described in detail here.

[0089] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0090] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0092] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A gas fire extinguishing system, characterized in that: include: A compressed air supply device (100); A nitrogen production device (200) connected to the compressed air supply device (100) via an air supply pipeline (300); a nitrogen output device (400) connected to the nitrogen production device (200) via a gas output pipeline (500), wherein the gas output pipeline (500) is provided with a purity control valve (600); and The control device (700) has a built-in nitrogen fire extinguishing database, and the control device (700) is configured to retrieve nitrogen purity information required for fire extinguishing from the nitrogen fire extinguishing database according to fire information, and control the air supply volume of the compressed air supply device (100) and / or the opening of the purity control valve (600) according to the nitrogen purity information.

2. The gas fire extinguishing system according to claim 1, characterized in that: The compressed air supply device (100) comprises an air compressor (110) electrically connected to a control device (700) and an air outlet control valve (120); the air outlet control valve (120) is arranged on the air outlet side of the air compressor (110) and is connected to the nitrogen generating device (200) via the air supply pipeline (300); The control device (700) is configured to control the rotation speed of the air compressor (110) and / or the opening of the air outlet control valve (120) according to the nitrogen purity information, so as to control the air supply amount.

3. The gas fire extinguishing system according to claim 1, characterized in that: The gas output pipeline (500) is also provided with a purity detector (800) electrically connected to the control device (700); the purity detector (800) is located downstream of the purity control valve (600) and is used to detect nitrogen purity information at the outlet side of the purity control valve (600); Wherein, the control device (700) is further configured to control the opening of the purity control valve (600) according to the nitrogen purity information to adjust the purity of nitrogen supply.

4. The gas fire extinguishing system according to claim 1, characterized in that: The control device (700) comprises a control interface (710) and a control panel (720), wherein the control interface (710) is used to display and set fire information and nitrogen purity, and the control panel (720) is provided with buttons (721) and indicator lights (722).

5. The gas fire extinguishing system according to any one of claims 1 to 4, characterized in that: The fire information includes the type of burning material.

6. The gas fire extinguishing system according to claim 1, characterized in that: The gas supply pipeline (300) is provided with a flow meter (900), and the flow meter (900) is located downstream of the purity control valve (600).

7. The gas fire extinguishing system according to claim 1, characterized in that: The nitrogen output device (400) comprises an injection actuator.

8. A fire extinguishing method, characterized in that: Applied to the gas fire extinguishing system according to any one of claims 1 to 7, the fire extinguishing method comprises: S100: Acquire current fire information, where the fire information includes information on the type of combustibles; S200: calling the nitrogen purity information required for fire extinguishing corresponding to the nitrogen fire extinguishing database according to the fire information; S300: Controlling the air supply volume of the compressed air supply device (100) and / or controlling the opening of the purity control valve (600) according to the nitrogen purity information to adjust the nitrogen supply purity.

9. The fire extinguishing method according to claim 8, characterized in that: The step S300 further includes: S310: Compare the actual nitrogen purity with the preset nitrogen purity to determine whether there is a difference in the nitrogen purity values; S320: When there is a difference in the nitrogen purity values, the gas supply amount of the compressed air supply device (100) is corrected by using the nitrogen purity calculation model in the nitrogen fire extinguishing database until the nitrogen purity values ​​reach a consistent level; Wherein, in the nitrogen purity calculation model, the nitrogen purity value P0 has been matched with the air supply flow rate Q0 of the compressed air supply device (100), that is, P0=K1*Q0, K1 is the calculation coefficient; The rotation speed of the air compressor (110) in the compressed air supply device (100) is marked as N0, and the corresponding air supply flow rate is Q0. At this time, the calculation formula can be set as: Q0=K2*N0, where K2 is the calculation coefficient; The relationship between the nitrogen purity value P0 and the rotation speed N0 of the air compressor (110) is: P0=K1*K2*N0.

10. A fire truck, characterized in that: Comprising a gas fire extinguishing system according to any one of claims 1-7.

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