CN112546502A - Dry powder fire suppression system and method - Google Patents
Dry powder fire suppression system and method Download PDFInfo
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- CN112546502A CN112546502A CN202011382402.4A CN202011382402A CN112546502A CN 112546502 A CN112546502 A CN 112546502A CN 202011382402 A CN202011382402 A CN 202011382402A CN 112546502 A CN112546502 A CN 112546502A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0045—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using solid substances, e.g. sand, ashes; using substances forming a crust
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to the field of fire fighting, and discloses a dry powder fire extinguishing system and a dry powder fire extinguishing method, wherein the dry powder fire extinguishing system comprises a lifting jet fire truck (10), a nitrogen fire truck (20) and a dry powder fire truck (30), the dry powder fire truck comprises a dry powder tank (31) containing dry powder, the nitrogen fire truck comprises a membrane nitrogen making unit, the membrane nitrogen making unit comprises a nitrogen gas output port (21) for providing nitrogen gas into the dry powder tank of the dry powder fire truck, and the lifting jet fire truck comprises an external interface (11) for connecting the dry powder tank and a jet device (12) communicated with the external interface for introducing and jetting mixed dry powder and nitrogen gas from the dry powder tank of the dry powder fire truck. This application uses the membrane nitrogen unit to utilize on-the-spot air to prepare nitrogen gas to continuously provide nitrogen gas as power, satisfy the operation needs that spray the dry powder for a long time.
Description
Technical Field
The present invention relates to the field of fire fighting, and in particular to a dry powder fire suppression system and method.
Background
The dry powder plays an important role in treating petrochemical fire. In the prior art, a high-pressure nitrogen cylinder is usually arranged on a fire fighting truck, then pressure is provided for a dry powder tank for storing dry powder extinguishing agent by using high-pressure nitrogen as power, and the dry powder extinguishing agent is conveyed to a dry powder gun or a dry powder gun through a pipeline so as to be sprayed to a fire scene for extinguishing fire.
Because the high-pressure nitrogen cylinder that the fire engine was equipped is limited, and need change the high-pressure nitrogen cylinder after using up, lead to unable for dry powder sprays provides lasting power, can't adapt to the operation demand of spraying for a long time.
Disclosure of Invention
The invention aims to solve the problem that dry powder extinguishment cannot be continuously carried out in the prior art, and provides a dry powder extinguishing system which can continuously provide power for dry powder so as to meet the requirement of long-time spraying.
In order to achieve the above object, the present invention provides, in one aspect, a dry powder fire extinguishing system including a fire truck with a dry powder tank, a nitrogen fire truck including a membrane nitrogen making unit including a nitrogen gas outlet to provide nitrogen gas into the dry powder tank of the fire truck with a dry powder, and a dry powder fire truck including an external connection port for connecting the dry powder tank and a spraying device communicated with the external connection port to introduce and spray mixed dry powder and nitrogen gas from the dry powder tank of the fire truck with the dry powder fire truck.
Optionally, dry powder fire extinguishing systems includes at least two dry powder fire engine, nitrogen gas fire engine is including two at least nitrogen gas delivery outlets that correspond, to with the nitrogen gas delivery outlet corresponds the connection provide nitrogen gas in the dry powder jar of dry powder fire engine, lift high injection fire engine include two at least external interfaces and with the injection apparatus of external interface intercommunication, in order through with external interface corresponds the connection dry powder jar of dry powder fire engine introduces and sprays mixed dry powder and nitrogen gas.
Optionally, each dry powder fire fighting truck comprises at least two dry powder tanks communicated with each other, wherein one dry powder tank is provided with an air inlet connected with the nitrogen gas outlet, the dry powder tank is provided with an outlet, and the outlet of each dry powder tank of the dry powder fire fighting truck is connected to the external interface through a conveying pipe.
Optionally, the dry powder fire fighting truck comprises a detection device for detecting the dry powder amount of the dry powder tank, the dry powder fire extinguishing system comprises a control unit for controlling the dry powder fire fighting truck and the nitrogen fire fighting truck, and the control unit controls the operation of the dry powder fire fighting truck according to the feedback of the detection device.
Optionally, the control unit is configured to: supplying mixed dry powder and nitrogen gas to the elevated jet fire engine through the dry powder fire engine before the dry powder amount of a dry powder tank of the dry powder fire engine currently in use drops to a first predetermined value; when the dry powder quantity of a dry powder tank of the dry powder fire truck currently used drops to the first preset value, the dry powder fire truck comprising the dry powder tank is controlled to stop providing mixed dry powder and nitrogen for the elevating jet fire truck and provide mixed dry powder and nitrogen for the elevating jet fire truck through the dry powder fire truck connected with other external interfaces.
Optionally, the control unit is configured to: and when the dry powder amount of the dry powder tank falls to a second preset value, controlling other dry powder fire fighting vehicles to work in preparation, wherein the second preset value is larger than the first preset value.
Optionally, the control unit is configured to: and when the dry powder amount of the dry powder tank drops to a first preset value, controlling the dry powder fire fighting truck comprising the dry powder tank to stop supplying mixed dry powder and nitrogen to the elevated jet fire fighting truck and make dry powder supply.
Optionally, the control unit is further configured to control operation of the elevated jet fire engine; and/or the control unit is arranged on the nitrogen fire engine.
The present application also provides a dry powder fire extinguishing method, wherein the method comprises: preparing nitrogen by using on-site air through the membrane nitrogen preparation unit; providing the nitrogen to a dry powder fire truck to mix and drive dry powder in a dry powder tank of the dry powder fire truck to be conveyed to a high-rise jet fire truck; and extinguishing fire by the spraying device of the elevating spraying fire truck.
Optionally, the method comprises using a portion of at least two of the dry powder fire trucks to provide mixed dry powder and nitrogen to the elevated jet fire truck, wherein: supplying mixed dry powder and nitrogen gas to the elevated jet fire engine through the dry powder fire engine before the dry powder amount of a dry powder tank of the dry powder fire engine currently in use drops to a first predetermined value; when the dry powder amount of the dry powder tank of the dry powder fire fighting truck currently in use drops to the first predetermined value, the supply of the mixed dry powder and nitrogen gas to the elevating jet fire fighting truck through the dry powder fire fighting truck is stopped and the mixed dry powder and nitrogen gas to the elevating jet fire fighting truck through the other dry powder fire fighting trucks is stopped.
Through the technical scheme, the membrane nitrogen preparation unit can be used for preparing nitrogen by utilizing air on site, so that the nitrogen is continuously provided as power, and the operation requirement of spraying dry powder for a long time is met.
Drawings
FIG. 1 is a schematic view of one embodiment of a dry powder fire suppression system of the present application.
Description of the reference numerals
10-lifting jet fire fighting truck, 11-external interface, 12-jet device, 13-first wireless control module, 14-arm support, 20-nitrogen fire fighting truck, 21-nitrogen outlet, 22-control unit, 30-dry powder fire fighting truck, 31-dry powder tank, 311-air inlet, 32-second wireless control module, 40-conveying pipe and 50-conveying pipe.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
According to an aspect of the present application, a dry powder fire extinguishing system is provided, wherein, dry powder fire extinguishing system is including lifting high injection fire engine 10, nitrogen gas fire engine 20 and dry powder fire engine 30, dry powder fire engine 30 is including holding dry powder's dry powder jar 31, nitrogen gas fire engine 20 is including membrane nitrogen making unit, membrane nitrogen making unit includes nitrogen gas delivery outlet 21, with to provide nitrogen gas in dry powder jar 31 of dry powder fire engine 30, lift high injection fire engine 10 including be used for connecting dry powder jar 31 external interface 11 with the injection apparatus 12 of external interface 11 intercommunication, with follow dry powder jar 31 of dry powder fire engine 30 introduces and sprays mixed dry powder and nitrogen gas.
The dry powder fire extinguishing system can use the membrane nitrogen preparation unit to prepare nitrogen gas by utilizing the air on site, thereby continuously providing nitrogen gas as power and meeting the operation requirement of spraying dry powder for a long time.
Specifically, when preparing to put out a fire, the membrane nitrogen production unit is opened to provide nitrogen as power to the dry powder tank 31 through the nitrogen output port 21, and the dry powder is driven to descend by the nitrogen and is conveyed to the spraying device 12 of the elevating jet fire engine 10 through the external interface 11, so that the dry powder and the nitrogen are sprayed to a fire scene to put out a fire.
Wherein, for providing high-pressure nitrogen gas, the membrane nitrogen preparation unit can include a compression module (for example, a compressor) for compressing air and a membrane nitrogen preparation module for preparing nitrogen gas, and the membrane nitrogen preparation module can be connected to the compression module to prepare high-pressure nitrogen gas through compressed air, and nitrogen gas output 21 sets up on the membrane nitrogen preparation module to outwards provide high-pressure nitrogen gas.
The elevated fire truck 10 may include an arm 14 that can be raised and lowered, and the spray device 12 may be mounted at the end of the arm 14. Wherein the spray device 12 may comprise a dry powder gun and/or a dry powder cannon.
In addition, as shown in fig. 1, the dry powder fire extinguishing system may include at least two dry powder fire fighting vehicles 30, the nitrogen fire fighting vehicle 20 includes at least two corresponding nitrogen gas outlets 21 to provide nitrogen gas into dry powder tanks 31 of the dry powder fire fighting vehicles 30 correspondingly connected to the nitrogen gas outlets 21, and the elevating jet fire fighting vehicle 10 includes at least two external interfaces 11 and jet devices 12 communicated with the external interfaces 11 to introduce and jet mixed dry powder and nitrogen gas through the dry powder tanks 31 of the dry powder fire fighting vehicles 30 correspondingly connected to the external interfaces 11.
Thus, nitrogen-driven dry powder can be provided to the elevating jet fire fighting truck 10 through each dry powder fire fighting truck 30 through its respective corresponding external interface 11, so that nitrogen-driven dry powder can be selectively provided to the elevating jet fire fighting truck 10 through different dry powder fire fighting trucks 30 and combinations thereof, for example, nitrogen-driven dry powder can be simultaneously provided to the elevating jet fire fighting truck 10 through a selected dry powder fire fighting truck 30 or a selected number of dry powder fire fighting trucks 30.
Wherein each dry powder fire fighting vehicle 30 may comprise at least two dry powder tanks 31 communicating with each other, wherein one of the dry powder tanks 31 has an inlet 311 for connection with the nitrogen gas outlet 21, the dry powder tank 31 has an outlet, and the outlets of the dry powder tanks 31 of the dry powder fire fighting vehicle 30 are connected to the external connection port 11 through a delivery pipe 40. Thus, the nitrogen gas output port 21 may supply nitrogen gas to the dry powder tank 31 through the dry powder tank 31 having the gas inlet 311, thereby supplying nitrogen-driven dry powder through the duct 40 through the outlet of the dry powder tank 31 as needed. The nitrogen output port 21 may be connected to the corresponding air inlet 311 through an air pipe 50, the outlet of each dry powder tank 31 may be connected to a conveying branch pipe, and each conveying branch pipe is connected to the conveying pipe 40 to connect to the corresponding external connection port 11.
In addition, the dry powder fire fighting vehicle 30 may include a detection device for detecting the amount of dry powder in the dry powder tank 31, the dry powder fire fighting system includes a control unit 22 for controlling the dry powder fire fighting vehicle 30 and the nitrogen fire fighting vehicle 20, and the control unit 22 controls the operation of the dry powder fire fighting vehicle 30 according to feedback from the detection device. Thus, the operation of the dry powder fire fighting vehicle 30 can be controlled according to the dry powder amount of the dry powder tank 31 to better complete the fire extinguishing work. Specifically, when the detection device detects that the dry powder amount of the dry powder tank 31 is insufficient, the fire extinguishing operation of the dry powder tank 31 and even the dry powder fire fighting vehicle 30 in which the dry powder tank 31 is located may be stopped, and the other dry powder tanks 31 or other dry powder fire fighting vehicles 30 may also be controlled to participate in the fire extinguishing operation.
According to a preferred embodiment of the present application, the control unit 22 may be configured to: supplying mixed dry powder and nitrogen gas to the elevated jet fire fighting vehicle 10 through the dry powder fire fighting vehicle 30 before the dry powder amount of the dry powder tank 31 of the dry powder fire fighting vehicle 30 currently in use drops to a first predetermined value; when the dry powder amount of the dry powder tank 31 of the dry powder fire fighting truck 30 currently in use drops to the first predetermined value, the dry powder fire fighting truck 30 including the dry powder tank 31 is controlled to stop supplying the mixed dry powder and nitrogen gas to the elevated jet fire fighting truck 10 and to supply the mixed dry powder and nitrogen gas to the elevated jet fire fighting truck 10 through the dry powder fire fighting truck 30 connected to the other external connection port 11. Thus, before the amount of dry powder of the currently used dry powder canister 31 drops to the first predetermined value, a stable flow rate of dry powder and nitrogen gas may be supplied through the currently used dry powder canister 31; after the dry powder amount of the dry powder tank 31 currently in use drops to the first predetermined value, the supply of the dry powder and the nitrogen gas at a stable flow rate may be continued by replacing the dry powder tank 31 of the other dry powder fire fighting vehicle 30. In this manner, nitrogen-driven dry powder may be continuously provided to the elevated jet fire engine 10 by alternating operation of the different dry powder fire engines 30 to ensure continued effectiveness of fire suppression. Wherein the first predetermined value may be set as desired, for example, may be 5% -10% of the total filling amount of the dry powder canister 31.
More preferably, the control unit 22 may be configured to: when the dry powder amount of the dry powder tank 31 falls to a second predetermined value, the other dry powder fire fighting vehicles 30 are controlled to be ready for operation, and the second predetermined value is larger than the first predetermined value. That is, the other dry powder fire fighting vehicles 30 are controlled to prepare for rotation before it is detected that the amount of dry powder in the dry powder tank 31 currently in use falls to the first predetermined value. Specifically, the other dry powder fire fighting truck 30 can be controlled to reach the vicinity of the elevating jet fire fighting truck 10 and then be manually connected to the corresponding external interface 11 and the nitrogen gas outlet 21, so that once the dry powder amount of the currently used dry powder tank 31 is reduced to a first preset value, the fire extinguishing operation can be immediately participated. Wherein the second predetermined value may be set as desired, for example, may be 10% -20% of the total filling amount of the dry powder tank 31.
Additionally, to ensure reliable rotation of dry powder fire trucks 30, dry powder tanks 31 of each dry powder fire truck 30 may be sequentially supplied with nitrogen-driven dry powder to the elevated jet fire truck 10. In this case, it is preferable to detect only the dry powder amount of the dry powder tank 31 having the air inlet 311 and control the operation of the dry powder fire fighting vehicle 30 according to the detection result. That is, nitrogen-driven dry powder is supplied to the elevating fire truck 10 always using only the dry powder tank 31 having the air inlet 311, and after the amount of dry powder in the dry powder tank 31 drops to a first predetermined value, the dry powder fire truck 30 is replaced, thereby always ensuring that the other dry powder tanks 31 are in a full standby state.
To ensure that the rotation can continue, the control unit 22 may be configured to: when the dry powder amount of the dry powder tank 31 falls to a first predetermined value, the dry powder fire fighting vehicle 30 including the dry powder tank 31 is controlled to stop supplying mixed dry powder and nitrogen gas to the elevated jet fire fighting vehicle 10 and make dry powder replenishment. Thus, when the dry powder amount of the dry powder tank 31 of the dry powder fire fighting vehicle 30 currently in use falls to the first predetermined value, the dry powder fire fighting vehicle 30 can perform dry powder replenishment so that the rotation can be performed again when the dry powder amount of the dry powder tank 31 of the rotated dry powder fire fighting vehicle 30 falls to the first predetermined value, whereby the fire extinguishing work can be continuously performed by the rotation work and the replenishment.
In addition, to facilitate coordination of the other equipment of the dry powder fire suppression system for further efficiency and continuous operation, the control unit 22 is preferably also used to control the operation of the elevated jet fire engine 10. Specifically, after the dry powder in the dry powder tank 31 is fully mixed with the nitrogen, the elevating fire truck 10 is controlled to lift the spraying device 12 to a desired position through the arm support 14, and the external connection port 11 is opened to spray the dry powder and the nitrogen from the dry powder tank 31.
Wherein, for the convenience of field control, the control unit 22 can be arranged on a fire engine to realize the mobile control. Since the equipment for elevating the jet fire engine 10 and the dry powder fire engine 30 is relatively inconvenient to arrange, the control unit 22 may be provided on the nitrogen fire engine 20. The control unit 22 may be directly wired to the various functional components of the nitrogen fire fighting vehicle 20 to effect control of the nitrogen fire fighting vehicle 20. To facilitate mobile operations, the elevating of the jet fire engine 10 and the dry powder fire engine 30 may be controlled by wireless signals. Specifically, the elevating jet fire fighting truck 10 may be provided with a first wireless control module 13, and the dry powder fire fighting truck 30 may be provided with a second wireless control module 32, so as to receive wireless signals from the control unit 22 and enable the elevating jet fire fighting truck 10 and the dry powder fire fighting truck 30 to perform corresponding operations.
Specifically, for the nitrogen fire fighting vehicle 20, the control of the control unit 22 includes the running of the nitrogen fire fighting vehicle 20 (e.g., providing running destination information, etc.), the start and stop of the membrane nitrogen production unit, the opening and closing of the nitrogen output port 21, and the like. For elevating fire truck 10, the control of control unit 22 includes elevating fire truck 10 (e.g., providing destination information, etc.), raising and lowering boom 14, starting and stopping of injection device 12, turning on and off of external interface 11, and the like. For the dry powder fire fighting vehicle 30, the control of the control unit 22 includes the travel of the dry powder fire fighting vehicle 30 (e.g., providing travel destination information, etc.), the filling of the dry powder tank 31, the opening and closing of the air inlet 311, and the like.
According to another aspect of the present application, there is provided a dry powder fire extinguishing method, wherein the method comprises:
preparing nitrogen by using on-site air through a membrane nitrogen preparation unit;
supplying the nitrogen gas to the dry powder fire fighting truck 30 to mix and drive the dry powder in the dry powder tank 31 of the dry powder fire fighting truck 30 to the elevated jet fire fighting truck 10;
fire is extinguished by the spraying device 12 of the overhead jet fire engine 10.
According to the method, the membrane nitrogen preparation unit is used for preparing nitrogen by utilizing air on site, so that the nitrogen is continuously provided as power, and the operation requirement of spraying dry powder for a long time is met.
Wherein preferably the method comprises using a portion of at least two of the dry powder fire trucks 30 to provide mixed dry powder and nitrogen to the elevated jet fire truck 10 to ensure continued fire suppression by rotation of the dry powder fire trucks 30, wherein:
supplying mixed dry powder and nitrogen gas to the elevated jet fire fighting vehicle 10 through the dry powder fire fighting vehicle 30 before the dry powder amount of the dry powder tank 31 of the dry powder fire fighting vehicle 30 currently in use drops to a first predetermined value;
when the dry powder amount in the dry powder tank 31 of the dry powder fire fighting vehicle 30 currently in use drops to the first predetermined value, the supply of mixed dry powder and nitrogen gas to the elevated jet fire fighting vehicle 10 through this dry powder fire fighting vehicle 30 is stopped and the supply of mixed dry powder and nitrogen gas to the elevated jet fire fighting vehicle 10 through the other dry powder fire fighting vehicles 30 is stopped.
Thus, nitrogen-driven dry powder may be selectively provided by different dry powder fire trucks 30 and combinations thereof by providing nitrogen-driven dry powder to elevated jet fire truck 10 by each dry powder fire truck 30, for example, nitrogen-driven dry powder may be provided to elevated jet fire truck 10 simultaneously by a selected dry powder fire truck 30 or a selected number of dry powder fire trucks 30.
Wherein a steady flow of dry powder and nitrogen gas may be provided through the dry powder tank 31 currently in use before the amount of dry powder in the dry powder tank 31 currently in use drops to a first predetermined value; after the dry powder amount of the dry powder tank 31 currently in use drops to the first predetermined value, the supply of the dry powder and the nitrogen gas at a stable flow rate may be continued by replacing the dry powder tank 31 of the other dry powder fire fighting vehicle 30. In this manner, nitrogen-driven dry powder may be continuously provided to the elevated jet fire engine 10 by alternating operation of the different dry powder fire engines 30 to ensure continued effectiveness of fire suppression. Wherein the first predetermined value may be set as desired, for example, may be 5% -10% of the total filling amount of the dry powder canister 31.
More preferably, the other dry powder fire fighting vehicles 30 may be prepared for operation when the dry powder amount of the dry powder tank 31 falls to a second predetermined value, which is greater than the first predetermined value. That is, the other dry powder fire trucks 30 are prepared to rotate before the amount of dry powder in the dry powder tank 31 currently in use falls to the first predetermined value. Specifically, another dry powder fire fighting truck 30 may arrive near the elevating jet fire fighting truck 10, and then corresponding pipelines are connected to prepare to provide nitrogen gas to the dry powder tank 31 and to prepare to provide dry powder and nitrogen gas to the elevating jet fire fighting truck 10, and once the amount of dry powder in the currently used dry powder tank 31 drops to a first predetermined value, the fire extinguishing operation may be immediately performed. Wherein the second predetermined value may be set as desired, for example, may be 10% -20% of the total filling amount of the dry powder tank 31.
Additionally, to ensure reliable rotation of dry powder fire trucks 30, dry powder tanks 31 of each dry powder fire truck 30 may be sequentially supplied with nitrogen-driven dry powder to the elevated jet fire truck 10. In this case, it is preferable to prepare and replace the dry powder amount of one of the dry powder canisters 31 when it falls to the second predetermined value and the first predetermined value, respectively. That is, only one dry powder tank 31 is always used to supply nitrogen-driven dry powder to the elevating fire truck 10, and after the amount of dry powder in the dry powder tank 31 drops to a first predetermined value, the dry powder fire truck 30 is replaced, thereby always ensuring that the other dry powder tanks 31 are in a full standby state.
To ensure that the rotation can continue, the dry powder fire fighting vehicle 30 including the dry powder tank 31 is stopped from providing mixed dry powder and nitrogen gas to the elevated fire fighting vehicle 10 and replenished with dry powder when the dry powder amount of the dry powder tank 31 drops to a first predetermined value. Thus, when the dry powder amount of the dry powder tank 31 of the dry powder fire fighting vehicle 30 currently in use falls to the first predetermined value, the dry powder fire fighting vehicle 30 can perform dry powder replenishment so that the rotation can be performed again when the dry powder amount of the dry powder tank 31 of the rotated dry powder fire fighting vehicle 30 falls to the first predetermined value, whereby the fire extinguishing work can be continuously performed by the rotation work and the replenishment.
The method of the present application may be practiced using any suitable equipment, such as a field organization lifting a fire truck 10, a dry powder fire truck 30, and driving the dry powder with nitrogen produced by a membrane nitrogen production unit. Preferably, the method of the present application is carried out using the dry powder fire suppression system of the present application.
The dry powder fire suppression system and method of the present application is described below with reference to embodiments of the drawings.
In the illustrated embodiment, two dry powder fire trucks 30 are used, the elevated jet fire truck 10 has two external interfaces 11, and the nitrogen fire truck 20 has two nitrogen outlets 21.
First, the elevating jet fire engine 10, the nitrogen fire engine 20 and one dry powder fire engine 30 are controlled by the control unit 22 to reach the fire extinguishing site, and the outlet and the air inlet 311 of the dry powder fire engine 30 are connected to the corresponding external connection port 11 and the nitrogen output port 21, respectively.
Subsequently, the membrane nitrogen production unit is started to produce nitrogen gas. If necessary, the nitrogen output port 21 can be controlled to be opened when the nitrogen reaches the use requirement (such as specific concentration and pressure), and the nitrogen is controlled to be supplied to the dry powder tank 31 so as to be fully mixed with the dry powder.
After the nitrogen and the dry powder are fully mixed, the external interface 11 is controlled to be opened and the arm support 14 is lifted to the spraying position, so that the mixture of the dry powder and the nitrogen is sprayed by the spraying device 12 to extinguish the fire.
When detecting that the dry powder amount of the dry powder tank 31 is reduced to 20% (a second preset value), the control unit 22 controls another dry powder fire fighting vehicle 30 to arrive at the fire extinguishing site, and connects the outlet and the air inlet 311 of the dry powder fire fighting vehicle 30 with the corresponding external connection port 11 and the nitrogen gas outlet 21, respectively, for standby.
When detecting that the dry powder amount of the dry powder tank 31 is reduced to 10% (a first preset value), the control unit 22 controls the external interface 11 corresponding to the currently used dry powder fire truck 30 to be closed so as to stop supplying the dry powder and the nitrogen gas through the dry powder fire truck 30; meanwhile, the control unit 22 controls the external interface 11 corresponding to the other standby dry powder fire fighting truck 30 to be opened so as to alternately and continuously provide dry powder and nitrogen gas to the elevated jet fire fighting truck 10.
The powder-stopped dry powder fire truck 30 is disconnected from the nitrogen fire truck 20 and the elevated jet fire truck 10 (e.g., the connecting pipes such as the delivery pipe 40 are removed), and then the control unit 22 can control the powder-stopped dry powder fire truck 30 to be driven away from the fire-extinguishing site to replenish the dry powder. After the dry powder is replenished, the control unit 22 controls the dry powder fire fighting vehicle 30 to return to the fire extinguishing site, and connects the outlet and the air inlet 311 of the dry powder fire fighting vehicle 30 with the corresponding external interface 11 and the nitrogen gas outlet 21, respectively, for standby.
Of course, in the embodiment shown in fig. 1, two dry powder fire fighting vehicles 30 may be connected to the corresponding external connection port 11 and nitrogen gas output port 21 at the same time, so as to provide dry powder and nitrogen gas to the high-lift jet fire fighting vehicle 10 at the same time for fire extinguishing. Also, when the dry powder amount of one dry powder tank 31 is insufficient, other dry powder tanks 31 of the same fire engine 30 may be used instead. In this case, for example, when the dry powder amount of the dry powder tank 31 currently used by both dry powder fire fighting vehicles 30 is insufficient, the other dry powder tank 31 of one dry powder fire fighting vehicle 30 may be continuously used for powder supply, and the other dry powder fire fighting vehicle 30 may be driven away and replenished with dry powder so as to supply powder again after replenishment, at which time the dry powder fire fighting vehicle 30 that was previously continuously operated may be stopped and driven away for replenishing dry powder. During the period when one fire truck 30 is driven away from the dry powder supplement, the control unit 20 can control the other dry powder fire trucks 30 to fill the positions of the dry powder fire trucks, so that the fire extinguishing operation is performed by simultaneously supplying dry powder and nitrogen gas to the elevating jet fire truck 10 through two dry powder fire trucks 30 all the time.
In the case where the nitrogen-containing fire truck 20 includes more nitrogen gas outlets 21 and the elevating jet fire truck 10 includes more external connectors 11, all or a part of the nitrogen gas outlets 21 and a corresponding number of the external connectors 11 may be connected to the dry powder tanks 31 of a corresponding number of the fire trucks 30, so that the fire extinguishing work is performed by simultaneously supplying dry powder and nitrogen gas to the elevating jet fire truck 10 through the required number of the fire trucks 30. Other dry powder canisters 31 of the same fire engine 30 or dry powder canisters 31 of other spare fire engines 30 may be used instead as needed when the dry powder amount of the dry powder canister 31 is insufficient.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. The present application includes the combination of individual features in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The utility model provides a dry powder fire extinguishing system, its characterized in that, dry powder fire extinguishing system is including lifting high injection fire engine (10), nitrogen gas fire engine (20) and dry powder fire engine (30), dry powder fire engine (30) are including holding dry powder jar (31), nitrogen gas fire engine (20) are including membrane nitrogen making unit, membrane nitrogen making unit includes nitrogen gas delivery outlet (21), with to provide nitrogen gas in dry powder jar (31) of dry powder fire engine (30), lift high injection fire engine (10) including be used for connecting dry powder jar (31) external interface (11) and with injection apparatus (12) of external interface (11) intercommunication, with follow dry powder jar (31) of dry powder fire engine (30) are introduced and are sprayed mixed dry powder and nitrogen gas.
2. The dry powder fire suppression system according to claim 1, comprising at least two of the dry powder fire trucks (30), the nitrogen fire truck (20) comprising at least two corresponding nitrogen gas outlets (21) to provide nitrogen gas into dry powder tanks (31) of the dry powder fire trucks (30) correspondingly connected to the nitrogen gas outlets (21), the uplift jet fire truck (10) comprising at least two external interfaces (11) and a jet device (12) communicating with the external interfaces (11) to introduce and jet mixed dry powder and nitrogen gas through the dry powder tanks (31) of the dry powder fire trucks (30) correspondingly connected to the external interfaces (11).
3. Dry powder fire extinguishing system according to claim 2, characterized in that each dry powder fire fighting vehicle (30) comprises at least two dry powder tanks (31) communicating with each other, wherein one of the dry powder tanks (31) has an air inlet (311) for connection with the nitrogen gas outlet (21), the dry powder tank (31) has an outlet, and the outlet of each dry powder tank (31) of the dry powder fire fighting vehicle (30) is connected to the external connection interface (11) by a conveying pipe (40).
4. Dry powder fire extinguishing system according to claim 2, characterized in that the dry powder fire fighting vehicle (30) comprises detection means for detecting the amount of dry powder in the dry powder tank (31), the dry powder fire extinguishing system comprising a control unit (22) for controlling the dry powder fire fighting vehicle (30) and the nitrogen fire fighting vehicle (20), the control unit (22) controlling the operation of the dry powder fire fighting vehicle (30) in dependence of feedback from the detection means.
5. A dry powder fire suppression system according to claim 4, wherein the control unit (22) is arranged to: supplying mixed dry powder and nitrogen gas to the elevated jet fire engine (10) through the dry powder fire engine (30) before the dry powder amount of the dry powder tank (31) of the currently used dry powder fire engine (30) drops to a first predetermined value; when the dry powder amount of a dry powder tank (31) of the dry powder fire truck (30) currently in use drops to the first preset value, controlling the dry powder fire truck (30) comprising the dry powder tank (31) to stop providing the mixed dry powder and nitrogen gas for the elevating jet fire truck (10) and providing the mixed dry powder and nitrogen gas for the elevating jet fire truck (10) through the dry powder fire truck (30) connected with the other external interfaces (11).
6. A dry powder fire suppression system according to claim 5, wherein the control unit (22) is arranged to: controlling the other dry powder fire fighting vehicles (30) to be ready for operation when the dry powder amount of the dry powder tank (31) falls to a second predetermined value, the second predetermined value being greater than the first predetermined value.
7. A dry powder fire suppression system according to claim 5, wherein the control unit (22) is arranged to: when the dry powder amount of the dry powder tank (31) is reduced to a first preset value, the dry powder fire fighting truck (30) comprising the dry powder tank (31) is controlled to stop supplying mixed dry powder and nitrogen to the elevating jet fire fighting truck (10) and make dry powder supply.
8. A dry powder fire suppression system according to any one of claims 4 to 7, wherein the control unit (22) is further adapted to control the operation of the elevated jet fire engine (10); and/or the control unit (22) is arranged on the nitrogen fire engine (20).
9. A dry powder fire extinguishing method, characterized in that the method comprises:
preparing nitrogen by using on-site air through the membrane nitrogen preparation unit;
supplying the nitrogen gas to a dry powder fire fighting truck (30) to mix and drive dry powder in a dry powder tank (31) of the dry powder fire fighting truck (30) to a high-lift jet fire fighting truck (10);
extinguishing the fire by means of the spraying device (12) of the lift-jet fire engine (10).
10. A method of dry powder fire fighting according to claim 9, characterized in that the method comprises using a portion of at least two of the dry powder fire fighting vehicles (30) to provide the elevated jet fire fighting vehicle (10) with mixed dry powder and nitrogen, wherein:
supplying mixed dry powder and nitrogen gas to the elevated jet fire engine (10) through the dry powder fire engine (30) before the dry powder amount of the dry powder tank (31) of the currently used dry powder fire engine (30) drops to a first predetermined value;
when the dry powder amount of the dry powder tank (31) of the dry powder fire fighting truck (30) currently in use drops to the first predetermined value, the supply of mixed dry powder and nitrogen gas to the elevating jet fire fighting truck (10) through the dry powder fire fighting truck (30) is stopped and the supply of mixed dry powder and nitrogen gas to the elevating jet fire fighting truck (10) through the other dry powder fire fighting trucks (30) is stopped.
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| CN114470579A (en) * | 2021-12-23 | 2022-05-13 | 湖南中联重科应急装备有限公司 | Dry powder filling system |
| CN115869569A (en) * | 2022-10-25 | 2023-03-31 | 湖南中联重科应急装备有限公司 | Fire extinguishing work system and control method for fire extinguishing work system |
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Address after: 410200 No. 997, Section 2, Tengfei Road, Wangcheng District, Changsha City, Hunan Province Applicant after: Hunan Zoomlion emergency equipment Co.,Ltd. Address before: No.997 Jinxing Road, Wangcheng District, Changsha City, Hunan Province Applicant before: Changsha Zhonglian Fire-Fighting Machinery Co.,Ltd. |
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Application publication date: 20210326 |