Liquid supply system and fire fighting truck

Abstract

The utility model relates to the field of fire fighting equipment, and provides a liquid supply system and a fire fighting truck, the liquid supply system comprises a first liquid supply device and a second liquid supply device, and the first liquid supply device comprises a vehicle foam device and is used for conveying foam stock solution to form a foam fire fighting truck. The second liquid supply device comprises a device body with a cavity inside, and the device body comprises a water injection connector used for being connected with an external water supply device; the foam injection connector is connected with a foam device of the vehicle; the liquid outlet connector is used for being connected with fire extinguishing equipment and supplying the foam mixed liquid to the fire extinguishing equipment. The fire fighting truck is provided with the first liquid supply device and has a foam fire extinguishing function. Meanwhile, the fire fighting truck is further provided with a second liquid supply device which can be connected with an external water supply device and is matched with a foam device of the truck to continuously provide foam mixed liquid to assist in fire extinguishing operation. Therefore, the limitation of the water storage capacity of the fire fighting truck is broken, the water demand of long-time fire fighting is met, the fighting capability of the fire fighting truck is fully exerted, and the fire fighting process is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a liquid supply system and a fire-fighting truck. Background Art

[0002] When a fire truck performs foam fire extinguishing operations, it is generally a fire truck with a foam system. For a large fire scene, it is usually necessary for multiple fire trucks with foam systems to operate at the same time, and the fire extinguishing operation lasts for a long time.

[0003] However, due to the limitation of the water tank capacity, the fire truck cannot meet the demand of using foam fire extinguishing for a long time, which restricts the operation capacity of the fire truck and affects the progress of the fire extinguishing operation. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid supply system and a fire truck, so as to at least solve one of the problems existing in the prior art.

[0005] In order to achieve the above object, the utility model provides a liquid supply system suitable for a fire truck, comprising a first liquid supply device and a second liquid supply device, wherein the first liquid supply device comprises:

[0006] The foam device of the vehicle is used to deliver foam stock so that the fire truck has a foam fire extinguishing function;

[0007] The second liquid supply device comprises a device body having a cavity therein, and the device body comprises:

[0008] A water injection interface, used to connect an external water supply device to inject water into the device body;

[0009] A foam injection interface, connected to the vehicle foam device, to inject foam stock solution into the device body;

[0010] The liquid outlet interface is used to connect the fire extinguishing equipment and supply the mixed liquid of the foam stock liquid and water to the fire extinguishing equipment.

[0011] According to the liquid supply system provided by the utility model, the device body can be detachably arranged on the fire truck, and the second liquid supply device also includes a roller, and the roller is rotatably connected to the device body.

[0012] According to the liquid supply system provided by the utility model, the device body comprises:

[0013] A first main pipe is detachably arranged on the fire truck, the water injection interface and the liquid outlet interface are respectively provided at two ends of the first main pipe, and the roller is rotatably connected to the first main pipe;

[0014] The first branch pipe has one end connected to the first main pipe and the other end provided with the foam injection interface.

[0015] According to the liquid supply system provided by the utility model, the second liquid supply device also includes:

[0016] The first water inlet valve is arranged on a side of the first main pipe close to the water injection interface, and the first water inlet valve is used to control the on-off status of the first main pipe.

[0017] According to the liquid supply system provided by the utility model, the second liquid supply device also includes:

[0018] A first flow meter is arranged on a side of the first main pipe close to the water injection interface, and the first flow meter is used to detect the liquid flow of the water injection interface;

[0019] A second flow meter is provided on the first branch pipe, and the second flow meter is used to detect the liquid flow of the first branch pipe;

[0020] a flow control valve, which is arranged on the first branch pipe and is located between the foam injection interface and the second flow meter, and is used to adjust the liquid flow in the first branch pipe;

[0021] The first controller is respectively connected to the first flow meter, the second flow meter and the flow control valve for communication. The first controller is used to control the opening of the flow control valve according to the flow signals fed back by the first flow meter and the second flow meter.

[0022] According to the liquid supply system provided by the utility model, the device body is fixedly arranged on the fire truck.

[0023] According to the liquid supply system provided by the utility model, the device body comprises:

[0024] A second main pipe is fixedly connected to the fire truck, and the two ends of the second main pipe are respectively provided with the water injection interface and the liquid outlet interface;

[0025] The second branch pipe has one end connected to the second main pipe and the other end provided with the foam injection interface. The vehicle foam device comprises a foam pump, and the foam pump is connected to the foam injection interface.

[0026] According to the liquid supply system provided by the utility model, the second liquid supply device also includes:

[0027] The second water inlet valve is arranged on a side of the second main pipe close to the water injection interface, and the second water inlet valve is used to control the on-off status of the second main pipe.

[0028] According to the liquid supply system provided by the utility model, the second liquid supply device also includes:

[0029] A third flow meter is arranged on a side of the second main pipe close to the water injection interface, and the third flow meter is used to detect the liquid flow of the water injection interface;

[0030] The second controller is respectively connected to the third flow meter and the foam pump for communication, and the second controller is used for controlling the rotation speed of the foam pump according to the flow signal fed back by the third flow meter and the preset foam ratio.

[0031] The utility model also provides a fire truck, comprising the liquid supply system as described in any one of the above items.

[0032] The liquid supply system provided by the utility model is suitable for fire trucks, including a first liquid supply device and a second liquid supply device, wherein the first liquid supply device includes: a foam device of the vehicle, which is used to transport foam stock liquid so that the fire truck has a foam fire extinguishing function; the second liquid supply device includes a device body with a cavity inside, and the device body includes: a water injection interface, which is used to connect an external water supply device to inject water into the device body; a foam injection interface, which is connected to the foam device of the vehicle to inject foam stock liquid into the device body; and a liquid outlet interface, which is used to connect a fire extinguishing device and supply a mixture of foam stock liquid and water to the fire extinguishing device. In this way, the fire truck has a first liquid supply device, which can output foam and has a foam fire extinguishing function. At the same time, the fire truck also has a second liquid supply device, which can be connected to an external water supply device and cooperate with the foam device of the vehicle to continuously provide a mixture of foam stock liquid and water to assist in fire extinguishing operations. Therefore, by arranging two sets of liquid supply systems, the fire truck is broken by the limitation of its own water storage capacity, meets the water demand for long-term fire fighting operations, gives full play to the combat capability of the fire truck, and speeds up the fire fighting process. In addition, the liquid supply system adopts a positive pressure foam system. Compared with the traditional negative pressure foam system, the foam mixing ratio is more accurate, which improves the fire extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a structural schematic diagram of a liquid supply system of an embodiment provided by the utility model;

[0035] Figure 2 This is an application schematic diagram of a liquid supply system provided by the utility model in an embodiment;

[0036] Figure 3 It is a structural schematic diagram of a liquid supply system according to another embodiment of the utility model;

[0037] Figure 4 This is an application schematic diagram of a liquid supply system according to another embodiment of the present utility model;

[0038] Reference numerals:

[0039] 1: Water injection interface; 2: Foam injection interface; 3: Liquid outlet interface; 4: Roller; 5: First main pipe; 6: First branch pipe; 7: First water inlet valve; 8: First flow meter; 9: Second flow meter; 10: Flow control valve; 11: First controller; 12: Second main pipe; 13: Second branch pipe; 14: Foam pump; 15: Foam tank; 16: Second water inlet valve; 17: Third flow meter; 18: Second controller; 19: Remote water supply vehicle; 20: Mobile foam cannon; 21: Foam gun. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] Combine the following Figures 1 to 4 The liquid supply system of the utility model is described.

[0042] like Figures 1 to 4 As shown, an embodiment of the utility model provides a liquid supply system suitable for a fire truck, including a first liquid supply device and a second liquid supply device. Among them, the first liquid supply device includes a foam device of the vehicle arranged on the fire truck, and the foam device of the vehicle is used to convey foam stock so that the fire truck has a foam fire extinguishing function, thereby constructing a foam fire truck for implementing foam fire extinguishing operations. In addition, the first liquid supply device also includes a water supply device of the vehicle arranged on the fire truck, specifically, the water supply device of the vehicle includes a water tank and a water pump. The water tank is used to store a certain amount of water source, and the water pump is used to pump the water in the water tank, so that after mixing with the foam stock, it is supplied to the output end of the vehicle to extinguish the foam fire. Thus, through the first liquid supply device, the fire truck itself is equipped with a positive pressure foam system, has a foam conveying function, and can then carry out foam fire extinguishing operations.

[0043] Furthermore, in addition to the first liquid supply device provided by the fire truck, a second liquid supply device is also separately configured. The second liquid supply device includes a device body with a cavity inside, and the device body includes a water injection interface 1, a foam injection interface 2, and a liquid outlet interface 3. Specifically, the water injection interface 1 is used to connect an external water supply device to inject water into the device body, for example, it can be connected to a remote water supply vehicle 19, etc., to meet the liquid supply demand of a large flow rate. The foam injection interface 2 is connected to the foam delivery port of the foam device of the vehicle to inject foam stock into the device body, so that the foam stock of the vehicle can be fully utilized. The liquid outlet interface 3 is used to connect a fire extinguishing device and supply a mixture of foam stock and water to the fire extinguishing device, for example, the fire extinguishing device can be a mobile foam cannon 20, a foam gun 21, etc. In this way, under the condition of continuous external water supply, the water in the device body is mixed with the foam stock to form a foam mixture, which can be supplied to the mobile foam cannon 20, the foam gun 21 to produce foam, or can be directly supplied to the output end of the vehicle to produce foam, or can also be supplied to other fire trucks to produce foam using their output ends. This can make full use of the vehicle's resources, cooperate with remote water supply, meet large-flow liquid supply needs, and greatly improve the vehicle's combat capability.

[0044] With this arrangement, the fire truck has a first liquid supply device that can output foam and has a foam fire extinguishing function. At the same time, the fire truck also has a second liquid supply device that can be connected to an external water supply device and cooperate with the vehicle's foam device to continuously provide a mixture of foam stock and water, and couple with the first liquid supply device to jointly carry out fire fighting. Thus, by arranging two sets of liquid supply systems, the fire truck is no longer limited by its own water storage capacity, and the water demand for long-term fire fighting can be met, giving full play to the combat capability of the fire truck and speeding up the fire fighting process. In addition, the liquid supply system adopts a positive pressure foam system. Compared with the traditional negative pressure foam system, the accuracy of the foam mixing ratio is higher, which improves the fire fighting effect.

[0045] Embodiment 1

[0046] Specifically, Figure 1 and Figure 2 As shown, in the embodiment of the utility model, the device body can be detachably arranged on the fire truck, and the second liquid supply device also includes a roller 4, which is rotatably connected to the device body. In this way, a movable liquid supply system is formed, which is convenient to remove when in use, and convenient to adjust the position, and the operation is flexible and convenient. In addition, the roller 4 can be a commonly used existing roller with a brake, so as to facilitate movement and reliable positioning.

[0047] In a specific embodiment of the present invention, the device body includes a first main pipe 5 and a first branch pipe 6. The first main pipe 5 can be detachably arranged on a fire truck, such as Figure 1As shown, the first main pipe 5 is provided with a water injection interface 1 and a liquid outlet interface 3 at both ends, and the roller 4 is rotatably connected to the first main pipe 5. One end of the first branch pipe 6 is connected to the first main pipe 5, and the other end is provided with a foam injection interface 2. In this way, the first main pipe 5 is used as a main pipeline and is provided with a roller 4, which can meet the needs of mobile use. Figure 2 As shown, a water supply device such as a remote water supply vehicle 19 is connected through a water injection interface 1 at one end of the main pipe to supply water to the pipes in the device. The foam delivery port of the foam device of the vehicle is connected through a foam injection interface 2 at one end of the branch pipe to inject foam stock into the pipes in the device, so as to mix with the water in the main pipe to form a foam-water mixture. The liquid outlet interface 3 at the other end of the main pipe can be connected to a water distributor, and the water distributor can be connected to a foam gun 21 or a mobile foam cannon 20 to produce foam, or directly transported to a fire truck to produce foam. In this way, the mixing of foam and water is completed in the main body of the liquid supply device, and the subsequent foaming fire extinguishing can be a foam gun 21, a mobile foam cannon 20, etc., which occupies less space and is more convenient to operate.

[0048] As an optional embodiment of the present utility model, the second liquid supply device further includes a first water inlet valve 7, such as Figure 1 As shown, the first water inlet valve 7 is arranged on the side of the first main pipe 5 close to the water injection interface 1, that is, located at the left end of the first main pipe 5. The first water inlet valve 7 is used to control the on-off status of the first main pipe 5. When in use, the valve is opened, and when not in use, the valve is closed, and the water supply is stopped. Figure 1 For the placement of the liquid supply system shown in the figure, the left and right directions in the figure are the left and right directions referred to.

[0049] Furthermore, in the embodiment of the present utility model, the second liquid supply device further includes a first flow meter 8, a second flow meter 9, a flow control valve 10, and a first controller 11. Figure 1 As shown, the first flow meter 8 is arranged on the side of the first main pipe 5 close to the water injection interface 1, and the first flow meter 8 is used to detect the liquid flow of the water injection interface 1, so that the water flow can be monitored in real time. The second flow meter 9 is arranged on the first branch pipe 6, and the second flow meter 9 is used to detect the liquid flow of the first branch pipe 6, so that the foam stock solution flow can be monitored in real time.

[0050] The flow control valve 10 is arranged on the first branch pipe 6, and is used to adjust the liquid flow in the first branch pipe 6, so that the injection amount of the foam stock solution can be adjusted according to the required foam ratio by adjusting the opening size of the flow control valve 10. The flow control valve 10 is located between the foam injection interface 2 and the second flow meter 9, so that the second flow meter 9 can accurately feedback the real-time flow of the foam stock solution.

[0051] The first controller 11 is respectively connected to the first flow meter 8, the second flow meter 9 and the flow control valve 10 for communication. The first controller 11 is used to control the opening of the flow control valve 10 according to the flow signal fed back by the first flow meter 8 and the second flow meter 9. Specifically, the first controller 11 can use an existing commonly used single-chip microcomputer or programmable logic controller, etc., and the foam system control program is pre-written into the controller, and can be fixedly installed on the first main pipe 5 in the form of a control cabinet. The first controller 11 can be electrically connected to the first flow meter 8, the second flow meter 9 and the flow control valve 10 through a CAN line for signal transmission. The single-chip microcomputer or programmable logic controller are all existing mature products. For example, a programmable logic controller of model SYMC-92DB can be selected, so its specific structure and related electrical connection relationship are not repeated here.

[0052] With such arrangement, in actual application, the first flow meter 8 can feed back the water flow to the first controller 11, and the second flow meter 9 can feed back the foam stock liquid flow to the first controller 11. The first controller 11 adjusts the opening of the flow control valve 10 according to the feedback signal of the flow meter, so that the ratio of the foam stock liquid flow to the water flow reaches the required value, thereby achieving the control of the foam ratio and meeting the fire extinguishing requirements. And the positive pressure injection method is adopted, and the foam ratio is more accurate.

[0053] Embodiment 2

[0054] Specifically, Figure 3 and Figure 4 As shown, in the embodiment of the utility model, the device body is fixedly arranged on the fire truck, for example, the device body can be fixed on the fire truck by a support bracket, etc. Thus, a vehicle-mounted liquid supply system is formed, which cooperates with the first liquid supply device to meet the large-flow fire extinguishing liquid supply demand.

[0055] In a specific embodiment of the present utility model, the device body includes a second main pipe 12 and a second branch pipe 13. The second main pipe 12 is fixedly connected to the fire truck, such as Figure 3 As shown, the two ends of the second main pipe 12 are respectively provided with a water injection interface 1 and a liquid outlet interface 3. One end of the second branch pipe 13 is connected to the second main pipe 12, and the other end is provided with a foam injection interface 2. The foam device of this vehicle includes a foam pump 14 arranged on the fire truck, and the foam delivery port of the foam pump 14 is connected to the foam injection interface 2. The foam device of this vehicle includes a foam tank 15 arranged on the fire truck, and the foam tank 15 is used to store foam concentrate, and the foam tank 15 is connected to the foam pump 14. In this way, the second main pipe 12 is used as the main pipeline, such as Figure 4As shown, a remote water supply vehicle 19 is used to connect the water injection interface 1 at one end of the main pipe to supply water to the pipe in the device. The foam pump 14 of the vehicle is used to connect the foam injection interface 2 at one end of the branch pipe to inject foam stock into the pipe in the device, so as to mix with the water in the main pipe to form a foam-water mixture. The liquid outlet interface 3 at the other end of the main pipe can be connected to a water distributor, which can be connected to a foam gun 21 or a mobile foam cannon 20 to produce foam, or directly transported to a fire truck to produce foam.

[0056] As an optional embodiment of the present utility model, the second liquid supply device further includes a second water inlet valve 16, such as Figure 3 As shown, the second water inlet valve 16 is arranged on the side of the second main pipe 12 close to the water injection interface 1, that is, at the left end of the second main pipe 12. The second water inlet valve 16 is used to control the on-off status of the second main pipe 12, so as to open the main pipe passage when it is needed, and close the main pipe to stop the liquid supply when the fire extinguishing operation is completed. Figure 3 For the placement of the liquid supply system shown in the figure, the left and right directions in the figure are the left and right directions referred to.

[0057] Furthermore, in the embodiment of the present utility model, the second liquid supply device further includes a third flow meter 17 and a second controller 18. Figure 3 As shown, the third flow meter 17 is arranged on one side of the second main pipe 12 close to the water injection interface 1, and the third flow meter 17 is used to detect the liquid flow of the water injection interface 1, so that the water flow can be monitored in real time. The second controller 18 is respectively connected to the third flow meter 17 and the foam pump 14 for communication, and the second controller 18 is used to control the rotation speed of the foam pump 14 according to the flow signal fed back by the third flow meter 17 and the preset foam ratio.

[0058] Specifically, the second controller 18 can directly use the vehicle controller of the fire truck, and the vehicle controller is electrically connected to the third flow meter 17 and the foam pump 14 respectively. The vehicle controller is an existing mature product, for example, a programmable logic controller, model SYMC-92DB, can be selected, so its specific structure and related electrical connection relationship are not repeated here. The vehicle controller can be provided with a control panel, and the operator can set the foam ratio through the control panel. The foam ratio is pre-stored in the vehicle controller so that it can be called when needed.

[0059] With such an arrangement, in actual application, the third flow meter 17 can feed back the water flow rate to the vehicle controller. The vehicle controller controls the rotation speed of the foam pump 14 according to the flow signal fed back by the third flow meter 17 and the set foam ratio, thereby controlling the flow rate of the foam stock liquid, thereby achieving precise control of the foam ratio of the liquid supply pipeline to meet the fire extinguishing requirements.

[0060] The fire truck provided by the utility model is described below. The fire truck described below and the liquid supply system described above can be referred to each other.

[0061] The embodiment of the utility model also provides a fire truck, including a liquid supply system as described in each of the above embodiments. With such a configuration, the fire truck has a first liquid supply device that can output foam and has a foam fire extinguishing function. At the same time, the fire truck also has a second liquid supply device that can be connected to an external water supply device and cooperate with the foam device of the vehicle to continuously provide a mixture of foam concentrate and water, and couple with the first liquid supply device to jointly carry out fire fighting. Thus, by arranging two sets of liquid supply systems, the limitation of the fire truck's own water storage capacity is broken, the water demand for long-term fire fighting is met, the combat capability of the fire truck is fully utilized, and the fire fighting process is accelerated. Moreover, the liquid supply system adopts a positive pressure foam system. Compared with the traditional negative pressure foam system, the accuracy of the foam mixing ratio is higher, which improves the fire fighting effect. The derivation process of this beneficial effect is roughly similar to the derivation process of the beneficial effect of the above-mentioned liquid supply system, so it will not be repeated here.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A liquid supply system, characterized in that: Applicable to a fire truck, comprising a first liquid supply device and a second liquid supply device, wherein the first liquid supply device comprises: The foam device of the vehicle is used to deliver foam stock so that the fire truck has a foam fire extinguishing function; The second liquid supply device comprises a device body having a cavity therein, and the device body comprises: A water injection interface (1) is used to connect an external water supply device to inject water into the device body; A foam injection interface (2) connected to the vehicle foam device for injecting foam stock solution into the device body; The liquid outlet interface (3) is used to connect to a fire extinguishing device and supply a mixture of foam stock liquid and water to the fire extinguishing device.

2. The liquid supply system according to claim 1, characterized in that: The device body can be detachably arranged on the fire truck, and the second liquid supply device further comprises a roller (4), and the roller (4) is rotatably connected to the device body.

3. The liquid supply system according to claim 2, characterized in that: The device body comprises: A first main pipe (5) is detachably arranged on the fire truck, the water injection interface (1) and the liquid outlet interface (3) are respectively provided at two ends of the first main pipe (5), and the roller (4) is rotatably connected to the first main pipe (5); The first branch pipe (6) has one end connected to the first main pipe (5) and the other end is provided with the foam injection interface (2).

4. The liquid supply system according to claim 3, characterized in that: The second liquid supply device also includes: The first water inlet valve (7) is arranged on a side of the first main pipe (5) close to the water injection interface (1), and the first water inlet valve (7) is used to control the on-off status of the first main pipe (5).

5. The liquid supply system according to claim 3, characterized in that: The second liquid supply device also includes: A first flow meter (8) is arranged on a side of the first main pipe (5) close to the water injection interface (1), and the first flow meter (8) is used to detect the liquid flow of the water injection interface (1); a second flow meter (9), arranged on the first branch pipe (6), the second flow meter (9) being used to detect the liquid flow in the first branch pipe (6); a flow control valve (10) disposed on the first branch pipe (6), and the flow control valve (10) is located between the foam injection interface (2) and the second flow meter (9), and the flow control valve (10) is used to adjust the liquid flow in the first branch pipe (6); The first controller (11) is respectively connected to the first flow meter (8), the second flow meter (9) and the flow control valve (10), and the first controller (11) is used to control the opening of the flow control valve (10) according to the flow signals fed back by the first flow meter (8) and the second flow meter (9).

6. The liquid supply system according to claim 1, characterized in that: The device body is fixedly arranged on the fire truck.

7. The liquid supply system according to claim 6, characterized in that: The device body comprises: A second main pipe (12) is fixedly connected to the fire truck, and the two ends of the second main pipe (12) are respectively provided with the water injection interface (1) and the liquid outlet interface (3); A second branch pipe (13) has one end connected to the second main pipe (12) and the other end is provided with the foam injection interface (2). The vehicle foam device comprises a foam pump (14), and the foam pump (14) is connected to the foam injection interface (2).

8. The liquid supply system according to claim 7, characterized in that: The second liquid supply device also includes: The second water inlet valve (16) is arranged on a side of the second main pipe (12) close to the water injection interface (1), and the second water inlet valve (16) is used to control the on-off status of the second main pipe (12).

9. The liquid supply system according to claim 7, characterized in that: The second liquid supply device also includes: a third flow meter (17), arranged on a side of the second main pipe (12) close to the water injection interface (1), the third flow meter (17) being used to detect the liquid flow of the water injection interface (1); The second controller (18) is respectively connected to the third flow meter (17) and the foam pump (14) for communication. The second controller (18) is used to control the rotation speed of the foam pump (14) according to the flow signal fed back by the third flow meter (17) and the preset foam ratio.

10. A fire truck, characterized in that: Comprising the liquid supply system as described in any one of claims 1-9.

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