Dry powder fire fighting system and fire fighting truck

Abstract

According to the dry powder fire fighting system and the fire fighting truck, a user can directly control opening or closing of a stop valve and a powder outlet valve through a man-machine interaction device, and when the stop valve and the powder outlet valve are controlled to be opened, compressed air in an air cylinder can be introduced into a dry powder tank through an air conveying pipe so as to carry dry powder in the dry powder tank to pass through a powder outlet pipe; therefore, compared with manual operation, the electric control automatic powder discharging mode has the advantage that the fire extinguishing and rescue speed can be increased.

Description

Technical Field

[0001] This application relates to the field of fire protection equipment technology, and in particular to a dry powder fire protection system and a fire truck. Background Technology

[0002] In dry powder fire extinguishing, manual dry powder fire monitors require multiple operators, occupying a large number of personnel. Furthermore, the operation is inconvenient, requiring manual operation step by step. The fire extinguishing response speed depends on the uncertainty of the operator's proficiency, which brings unnecessary manpower and time costs to fire extinguishing and affects the speed of fire extinguishing and rescue. Utility Model Content

[0003] The purpose of this application is to provide a dry powder fire extinguishing system and fire truck that can improve the speed of fire extinguishing and rescue.

[0004] The embodiments of this application can be implemented as follows:

[0005] In the first aspect, this utility model provides a dry powder fire-fighting system, including a gas cylinder, a dry powder tank, a powder dispenser, and a human-machine interface device;

[0006] The gas cylinder is used to store compressed gas;

[0007] The gas cylinder is connected to the dry powder tank via a gas delivery pipe, and a shut-off valve is installed on the gas delivery pipe.

[0008] The dry powder tank is connected to the powder dispenser via a powder outlet pipe, and a powder outlet valve is provided on the powder outlet pipe;

[0009] The human-machine interface device is electrically connected to both the shut-off valve and the powder outlet valve, and is used to control the opening and closing of the shut-off valve and the powder outlet valve.

[0010] In an optional embodiment, a pressure gauge is provided on the dry powder tank, and when the shut-off valve is opened, the powder outlet valve can open or close according to the detection result of the pressure gauge.

[0011] In an optional embodiment, a pressure reducing valve is also provided on the gas pipeline, and the pressure reducing valve is located between the shut-off valve and the dry powder tank.

[0012] In an optional embodiment, the gas pipeline is further provided with an inlet valve and a one-way valve. The inlet valve and the one-way valve are both located between the shut-off valve and the dry powder tank. The inlet valve is electrically connected to the human-machine interface device and can be opened and closed under the control of the human-machine interface device.

[0013] In an optional embodiment, the gas pipeline is further equipped with a low-pressure gauge and a high-pressure gauge, the high-pressure gauge being located between the shut-off valve and the gas cylinder, and the low-pressure gauge being located between the shut-off valve and the dry powder tank.

[0014] In an optional embodiment, the dry powder fire extinguishing system further includes a purge pipe, the air inlet of which is connected to the air supply pipe at a position downstream of the shut-off valve, and the air outlet of which is connected to the powder outlet pipe at a position between the powder outlet valve and the powder outlet device. The purge pipe is equipped with a purge valve, which is electrically connected to the human-machine interface device.

[0015] In an optional embodiment, the powder dispenser includes a dry powder gun and a dry powder cannon, the powder outlet pipe includes a gun powder outlet pipe and a cannon powder outlet pipe, the powder outlet valve includes a gun powder outlet valve and a cannon powder outlet valve, the purging pipe includes a gun purging pipe and a cannon purging pipe, and the purging valve includes a gun purging valve and a cannon purging valve.

[0016] The dry powder gun is connected to the dry powder tank through the gun powder outlet pipe. The gun powder outlet valve is provided on the gun powder outlet pipe. The two ends of the gun purge pipe are respectively connected to the gun powder outlet pipe and the air supply pipe. The gun purge valve is provided on the gun purge pipe.

[0017] The dry powder cannon is connected to the dry powder tank through the powder outlet pipe. The powder outlet valve is installed on the powder outlet pipe. The two ends of the purging pipe are connected to the powder outlet pipe and the gas supply pipe, respectively. The purging valve is installed on the purging pipe.

[0018] In an optional embodiment, the dry powder tank is further provided with a residual gas venting pipe and a residual gas venting valve provided on the residual gas venting pipe.

[0019] In an optional embodiment, the opening degree of the powder outlet valve can be adjusted when the powder outlet valve is open.

[0020] Secondly, this utility model provides a fire truck, including the dry powder fire-fighting system described in any of the foregoing embodiments.

[0021] The beneficial effects of the embodiments of this application include, for example:

[0022] Users can directly control the opening or closing of the shut-off valve and the powder discharge valve through the human-machine interaction device. When both the shut-off valve and the powder discharge valve are open, the compressed air in the gas cylinder can be introduced into the dry powder tank through the gas delivery pipe, so as to carry the dry powder in the dry powder tank through the powder discharge pipe, thereby realizing the discharge of dry powder by the powder discharger. This electronically controlled automated powder discharge method can improve the speed of fire fighting and rescue compared with manual operation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the air circuit of the dry powder fire suppression system according to an embodiment of this application.

[0025] Icons: 1-Dry powder gun; 2-Dry powder reel; 3-Gun purging valve; 4-Gun powder outlet valve; 5-Safety valve; 6-Dry powder tank; 7-Upper pressure gauge; 8-Dry powder cannon; 9-Cannon powder outlet valve; 10-Lower pressure gauge; 11-Gas cylinder; 12-Cylinder valve; 13-Inflation valve; 14-Stop valve; 15-Pressure reducing valve; 16-Residual gas venting valve; 17-Cannon purging valve; 18-Inlet valve; 19-High pressure gauge; 20-Check valve; 21-Low pressure gauge. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] refer to Figure 1 This application discloses a dry powder fire extinguishing system, which includes a gas cylinder 11, a dry powder tank 6, a powder dispenser, and a human-machine interface device.

[0034] Cylinder 11 is used to store compressed gas;

[0035] Gas cylinder 11 is connected to dry powder tank 6 via a gas supply pipe, and a shut-off valve 14 is installed on the gas supply pipe.

[0036] The dry powder tank 6 is connected to the powder dispenser via a powder outlet pipe, and a powder outlet valve is installed on the powder outlet pipe.

[0037] The human-machine interface device is electrically connected to both the shut-off valve 14 and the powder outlet valve, and is used to control the opening and closing of the shut-off valve 14 and the powder outlet valve.

[0038] In this way, users can directly control the opening or closing of the shut-off valve 14 and the powder discharge valve through the human-machine interaction device. When both the shut-off valve 14 and the powder discharge valve are open, the compressed air in the gas cylinder 11 can be introduced into the dry powder tank 6 through the gas delivery pipe, so as to carry the dry powder in the dry powder tank 6 through the powder discharge pipe, thereby realizing the discharge of dry powder by the powder discharger. This automatic powder discharge method controlled by electricity can improve the speed of fire fighting and rescue compared with manual operation.

[0039] The human-machine interface device can be a wireless remote control or other operable electrical appliance with a display. The display can be a touch screen or a device that only displays information. The wireless remote control also has corresponding mechanical buttons for operation. The human-machine interface device is mainly connected to the shut-off valve 14 and the powder outlet valve through the controller. The human-machine interface device is mainly used to interact with the user and receive user commands through virtual buttons or mechanical buttons. In this way, the controller can control the opening and closing of the shut-off valve 14 and the powder outlet valve according to the user commands.

[0040] To ensure the powder dispensing pressure and maintain the fire extinguishing effect, a pressure gauge is installed on the dry powder tank 6. When the shut-off valve 14 is open, the powder dispensing valve can open or close according to the pressure gauge's detection result. That is, the pressure gauge is electrically connected to the controller, and the controller can control the opening of the powder dispensing valve based on the pressure gauge's detection result. In this way, after the shut-off valve 14 and the solenoid valve are opened, the controller can determine whether the real-time pressure detected by the pressure gauge in the dry powder tank 6 is lower than the preset value. If so, it controls the powder dispensing valve to close, and the powder dispenser stops dispensing powder. As compressed air is continuously delivered from the gas cylinder 11 to the dry powder tank 6, the pressure in the dry powder tank 6 gradually increases until the pressure is greater than the preset value, which controls the powder dispensing valve to open, and the powder dispenser continues to dispense powder. As the powder dispensing process continues, if the real-time pressure falls below the preset value again, the powder dispensing valve will close. This cycle repeats until the fire is extinguished and the shut-off valve 14 and the powder dispensing valve are closed.

[0041] Of course, it is understandable that the above-mentioned control process of the solenoid valve automatically opening and closing with pressure is existing technology and does not require re-editing of the program segment. The controller can automatically run the existing program to realize the opening and closing control of the powder outlet valve simply by inputting the preset value through the human-machine interface device.

[0042] The aforementioned controller is typically a central processing unit (CPU), which can be configured with a corresponding operating system and control interfaces. Specifically, it can be a microcontroller, DSP (Digital Signal Processing), ARM (Advanced RISC Machines), or other digital logic control unit capable of automated control. It can load control instructions into memory for storage and execution at any time. It can also have built-in CPU instruction and data memory, input / output units, power supply modules, digital and analog units, etc. The specific configuration can be determined according to the actual usage, and this application does not impose any limitations on this.

[0043] Multiple pressure gauges can be installed on the dry powder tank 6. For example, one can be installed on the side of the dry powder tank 6 near the bottom as the lower pressure gauge 10, and another can be installed on the top of the dry powder tank 6 as the upper pressure gauge 7. By installing pressure gauges at different locations on the dry powder tank 6, the accuracy of the air pressure detection inside the dry powder tank 6 can be improved. This helps to identify any abnormalities in the entire system.

[0044] A safety valve 5 is installed on the top of the dry powder tank 6 to prevent overpressure, improve the reliability of the system, and protect the safety of equipment and personnel.

[0045] Understandably, there can be one or more gas cylinders 11, all connected to a gas supply pipe. Each gas cylinder 11 typically has a valve 12 to control whether compressed gas is supplied to the gas supply pipe. A filling valve 13 is installed on the gas supply pipe to fill the gas cylinder 11 with compressed gas when the shut-off valve 14 is closed and the filling valve 13 is open. The compressed gas can be nitrogen or other inert gases. The gas supply pipe is connected to the bottom of the dry powder tank 6 so that the compressed gas entering from the bottom of the dry powder tank 6 can better carry the dry powder into the powder outlet pipe.

[0046] In this embodiment, a pressure reducing valve 15 is also provided on the gas pipeline. The pressure reducing valve 15 is located between the shut-off valve 14 and the dry powder tank 6, that is, the pressure reducing valve 15 is located downstream of the shut-off valve 14. The pressure reducing valve 15 is further away from the gas cylinder 11 than the shut-off valve 14. The pressure reducing valve 15 can reduce the gas pressure of the compressed gas supplied to the dry powder tank 6 and maintain pressure stability, ensuring that various pipelines, valves and equipment downstream of the pressure reducing valve 15 can operate within a safe working pressure range.

[0047] The gas supply pipe is also equipped with an inlet valve 18 and a one-way valve 20. Both inlet valve 18 and one-way valve 20 are located between the shut-off valve 14 and the dry powder tank 6, specifically between the pressure reducing valve 15 and the dry powder tank 6, i.e., downstream of the pressure reducing valve 15. Inlet valve 18 is electrically connected to a human-machine interface and can be opened and closed under the control of the interface. Adding inlet valve 18 improves the system's controllability, safety, and operational flexibility. Inlet valve 18 helps maintain the appropriate working pressure within the dry powder tank 6. This not only affects the fire extinguishing effect but also the overall safety of the system. Furthermore, by placing inlet valve 18 downstream of shut-off valve 14, the operation of specific parts can be adjusted or stopped without completely interrupting the entire system. This is crucial for system commissioning, testing, and responding to changes in requirements under different fire scenarios. One-way valve 20 prevents compressed gas backflow.

[0048] The gas supply pipe is also equipped with a low-pressure gauge 21 and a high-pressure gauge 19. The high-pressure gauge 19 is located between the shut-off valve 14 and the gas cylinder 11, that is, the high-pressure gauge 19 is located upstream of the shut-off valve 14. The high-pressure gauge 19 is closer to the gas cylinder 11 than the shut-off valve 14. The high-pressure gauge 19 is also called a high-pressure meter and is an instrument specifically designed to measure a high pressure range. The high-pressure gauge 19 is mainly used to detect the real-time gas pressure of the gas cylinder 11, which helps to ensure that the gas cylinder 11 has been correctly filled to the required pressure level and can maintain sufficient pressure supply throughout the use. Moreover, by reading the high-pressure gauge 19, it is possible to detect abnormally high pressure in the nitrogen cylinder 11 in a timely manner, avoiding safety hazards caused by overpressure, such as container damage or explosion. Therefore, the high-pressure gauge 19 is helpful in determining whether the gas cylinder 11 is in good working condition. The low-pressure valve is located between the shut-off valve 14 and the dry powder tank 6.

[0049] The low-pressure gauge 21, also known as a pressure gauge, is an instrument specifically designed to measure relatively low pressure ranges. It is located between the shut-off valve 14 and the dry powder canister 6, downstream of the pressure reducing valve 15. This gauge primarily monitors the pressure of the gas after pressure reduction, i.e., the gas pressure before it enters the dry powder canister 6. This is crucial for ensuring the dry powder canister 6 receives gas at the appropriate pressure, as excessively high or low pressures can affect the effective spraying of the dry powder. Furthermore, by using the reading from the low-pressure gauge 21, operators can adjust the position of the inlet valve 18 or other relevant valves as needed to precisely control the gas flow and pressure entering the dry powder canister 6, ensuring the extinguishing agent is propelled as intended.

[0050] In this embodiment, the dry powder fire extinguishing system also includes a purge pipe. The air inlet of the purge pipe is connected to the air supply pipe at a position downstream of the shut-off valve 14. That is, the position where the air inlet of the purge pipe is connected to the air supply pipe is further away from the shut-off valve 14. The air outlet of the purge pipe is connected to the powder outlet pipe at a position between the powder outlet valve and the powder outlet device. A purge valve is provided on the purge pipe. The purge valve is electrically connected to the human-machine interface device so that after the fire is extinguished and the powder outlet valve is closed, the purge valve opens to purge the powder outlet device and remove the dry powder remaining in the powder outlet device.

[0051] Specifically, the powder dispenser includes a dry powder gun 1 and a dry powder cannon 8, the powder outlet pipe includes a gun powder outlet pipe and a cannon powder outlet pipe, the powder outlet valve includes a gun powder outlet valve 4 and a cannon powder outlet valve 9, the purging pipe includes a gun purging pipe and a cannon purging pipe, and the purging valve includes a gun purging valve 3 and a cannon purging valve 17.

[0052] The dry powder gun 1 has a dry powder reel 2 connected to the dry powder tank 6 via a powder outlet pipe. A powder outlet valve 4 is located on the powder outlet pipe. The two ends of the gun purge pipe are connected to the powder outlet pipe and the air supply pipe, respectively. A purge valve 3 is located on the gun purge pipe. The dry powder cannon 8 is connected to the dry powder tank 6 via a powder outlet pipe. A powder outlet valve 9 is located on the powder outlet pipe. The two ends of the purge pipe are connected to the powder outlet pipe and the air supply pipe, respectively. A purge valve 17 is located on the purge pipe. Specifically, the air inlet of both the gun purge pipe and the purge pipe is located downstream of the low-pressure gauge 21, the air outlet of the gun purge pipe is located downstream of the powder outlet valve 4, and the air outlet of the purge pipe is located downstream of the powder outlet valve 9. Thus, the opening and closing of the gun purge valve and the purge valve 17 purge the dry powder gun 1 and the dry powder cannon 8, respectively.

[0053] When the powder outlet valve is open, the opening degree of the powder outlet valve can be adjusted, that is, the opening degree of both the gun powder outlet valve 4 and the cannon powder outlet valve 9 can be adjusted, for example, linearly or according to the gear gradient.

[0054] In addition, the dry powder tank 6 is equipped with a residual gas vent pipe and a residual gas vent valve 16 installed on the vent pipe. The residual gas vent pipe is specifically connected to the side of the dry powder tank 6 and is mainly used to release the remaining compressed gas in the dry powder tank 6. The residual gas vent valve 16 is used to manually or automatically control the gas discharge process in the dry powder tank 6 through a controller. By opening the residual gas vent valve 16, the pressure in the dry powder tank 6 can be safely reduced to the ambient pressure level, which facilitates subsequent maintenance, cleaning, or replacement of dry powder in the dry powder tank 6 and avoids potential safety hazards such as spray injuries or explosions.

[0055] The human-machine interface device includes at least a powder dispensing button for the gun, a powder dispensing button for the cannon, a powder dispensing volume knob for the gun, and a powder dispensing volume knob for the cannon. The powder dispensing button for the gun and the powder dispensing volume knob for the cannon are electrically connected to the powder dispensing valve 4 via a controller, and the powder dispensing button for the cannon and the powder dispensing volume knob for the cannon are electrically connected to the powder dispensing valve 9 via a controller. Thus, when the dry powder gun 1 or the dry powder cannon 8 needs to operate, simply press the corresponding powder dispensing button for the gun or the cannon. If it is necessary to adjust the powder dispensing volume, simply rotate the corresponding powder dispensing knob.

[0056] The working principle of the dry powder fire suppression system in this embodiment is illustrated below:

[0057] Pressing the one-button powder dispensing button or the gun powder dispensing button will trigger the controller to first open the bottle valve 12, which will then supply the high-pressure nitrogen in the gas cylinder 11 to the high-pressure shut-off valve 14. Next, the controller will open the shut-off valve 14, allowing the high-pressure nitrogen to pass through the shut-off valve 14 and enter the pressure reducing valve 15, where it will be depressurized. Finally, the controller will open the inlet valve 18, which will then inject the depressurized nitrogen into the dry powder storage tank.

[0058] The controller monitors the real-time pressure inside the dry powder tank 6 using a pressure gauge. Once the pressure in the dry powder storage tank reaches the preset value, the controller opens the powder discharge valve 9 (for the nozzle) or the powder discharge valve 4 (for the gun), causing the dry powder cannon 8 or the dry powder gun 1 to begin discharging powder and extinguish the fire. When the pressure in the dry powder storage tank falls below the preset value, the controller closes the powder discharge valve 9 (for the nozzle) or the powder discharge valve 4 (for the gun), stopping the dry powder cannon 8 or the dry powder gun 1 from discharging dry powder. The above steps are repeated until the fire is extinguished.

[0059] Press the one-button powder discharge button or the gun powder discharge button again. The controller first controls the powder discharge valve 9 or the gun powder discharge valve 4 to close; then controls the air inlet valve 18 to close; then controls the purge valve 17 or the gun purge valve 3 to open, so as to blow away the residual powder in the dry powder cannon 8 or the dry powder gun 1; after the purge is set for a certain period of time, the controller controls the shut-off valve 14 to close; then controls the purge valve 17 or the gun purge valve 3 to close. The powder discharge and cleaning work of the dry powder cannon 8 is completed.

[0060] The device allows users to rotate the powder output knob or the powder output knob to select the powder output level of the dry powder cannon 8 or the dry powder gun 1. Users can also select the powder output valve 9 or the powder output valve 4 to adjust the powder output flow rate of the dry powder cannon 8 or the dry powder gun 1 by choosing from options such as one-quarter opening, one-half opening, three-quarter opening, or fully open.

[0061] This application also discloses a fire truck, which includes the dry powder fire extinguishing system described in the above embodiments.

[0062] In summary, this application discloses a dry powder fire extinguishing system and a fire truck. Users can directly control the opening or closing of the shut-off valve 14 and the powder discharge valve through a human-machine interface device. When both the shut-off valve 14 and the powder discharge valve are open, the compressed air in the gas cylinder 11 can be introduced into the dry powder tank 6 through the gas delivery pipe to carry the dry powder in the dry powder tank 6 through the powder discharge pipe, thereby realizing the discharge of dry powder by the powder discharger. This automated method of powder discharge through electronic control can improve the speed of fire extinguishing and rescue compared with manual operation.

[0063] Finally, it should be noted that in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0064] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A dry powder fire extinguishing system, characterized in that The system comprises a gas cylinder (11), a dry powder tank (6), a powder outlet device and a human-machine interaction device. The gas cylinder (11) is used for storing compressed gas. The gas cylinder (11) is connected with the dry powder tank (6) through a gas supply pipe, and a stop valve (14) is arranged on the gas supply pipe. The dry powder tank (6) is connected with the powder outlet device through a powder outlet pipe, and a powder outlet valve is arranged on the powder outlet pipe. The human-machine interaction device is electrically connected with the stop valve (14) and the powder outlet valve, and is used for controlling the opening and closing of the stop valve (14) and the powder outlet valve.

2. A dry powder fire extinguishing system according to claim 1, characterised in that A pressure gauge is arranged on the dry powder tank (6), and the powder outlet valve can be opened or closed according to the detection result of the pressure gauge when the stop valve (14) is opened.

3. The dry chemical fire suppression system of claim 1, wherein, A pressure reducing valve (15) is further arranged on the gas supply pipe, and the pressure reducing valve (15) is located between the stop valve (14) and the dry powder tank (6).

4. The dry chemical fire suppression system of claim 1, wherein, The gas supply pipe is further provided with an air inlet valve (18) and a one-way valve (20), and the air inlet valve (18) and the one-way valve (20) are both located between the stop valve (14) and the dry powder tank (6), the air inlet valve (18) is electrically connected with the human-machine interaction device and can be opened and closed under the control of the human-machine interaction device.

5. The dry chemical fire suppression system of claim 1, wherein, The gas supply pipe is further provided with a low-pressure gauge (21) and a high-pressure gauge (19), the high-pressure gauge (19) is located between the stop valve (14) and the gas cylinder (11), and the low-pressure gauge (21) is located between the stop valve (14) and the dry powder tank (6).

6. The dry chemical fire suppression system of claim 1, wherein, The dry powder fire extinguishing system further comprises a purge pipe, the air inlet end of the purge pipe is connected to a position on the gas supply pipe located on the downstream side of the stop valve (14), the air outlet end of the purge pipe is connected to a position on the powder outlet pipe located between the powder outlet valve and the powder outlet device, and a purge valve is arranged on the purge pipe, and the purge valve is electrically connected with the human-machine interaction device.

7. A dry chemical fire suppression system according to claim 6 wherein, The powder outlet device comprises a dry powder gun (1) and a dry powder cannon (8), the powder outlet pipe comprises a gun powder outlet pipe and a cannon powder outlet pipe, the powder outlet valve comprises a gun powder outlet valve (4) and a cannon powder outlet valve (9), and the purge pipe comprises a gun purge pipe and a cannon purge pipe. The dry powder gun (1) is connected with the dry powder tank (6) through the gun powder outlet pipe, the gun powder outlet valve (4) is arranged on the gun powder outlet pipe, the two ends of the gun purge pipe are connected with the gun powder outlet pipe and the gas supply pipe respectively, and the gun purge valve (3) is arranged on the gun purge pipe. The dry powder cannon (8) is connected with the dry powder tank (6) through the cannon powder outlet pipe, the cannon powder outlet valve (9) is arranged on the cannon powder outlet pipe, the two ends of the cannon purge pipe are connected with the cannon powder outlet pipe and the gas supply pipe respectively, and the cannon purge valve (17) is arranged on the cannon purge pipe.

8. The dry chemical fire suppression system of claim 1, wherein, The dry powder tank (6) is further provided with a residual gas discharge pipe and a residual gas discharge valve (16) arranged on the residual gas discharge pipe.

9. The dry chemical fire suppression system of claim 1, wherein, When the powder outlet valve is opened, the opening degree of the powder outlet valve can be adjusted.

10. A fire apparatus characterized by, The system comprises a dry powder fire extinguishing system according to any one of claims 1-9.

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