Fire fighting truck with multi-path foam proportion control function, foam control system and control method

Abstract

The invention provides a foam control system which comprises a water supply system and a foam supply system, and the water supply system comprises a water tank, a fire pump, a pump water inlet pipeline and a pump water outlet pipeline; the foam supply system comprises a foam tank, a foam pump liquid inlet pipeline, a foam pump, a foam pump liquid outlet pipeline and a foam flow control valve; by controlling the foam flow of the foam pump liquid outlet pipe main path and the foam pump liquid outlet pipe branch path and the water outlet flow of the pump water outlet pipeline, the fire fighting equipment can spray water and / or spray mixed foam formed by mixing foam and water. On the other hand, the invention further provides a multi-way foam proportion control fire fighting truck and a foam proportion control method.

Description

Technical Field

[0001] The present invention relates to fire-fighting equipment, and in particular to a fire truck with multi-channel foam proportion control, a foam control system and a control method. Background Art

[0002] In recent years, with the rapid development of society and the increase in human activity, fires have become increasingly common. Class B foam fire trucks play a crucial role in firefighting. The foam mixing systems for these vehicles are classified into two types: negative-pressure foam mixing systems with an integrated water pump and positive-pressure foam mixing systems with an integrated water pump. Both systems present two practical challenges. The first is that the flow rates at each outlet vary, leading to inconsistent foam mixing when foam is dispensed simultaneously. This is particularly true for pipes with low flow rates, resulting in poor foam delivery, significantly impacting firefighting efficiency. The second issue is that the foam mixing system's integrated water pump means that each pipe can only dispense water or foam. This prevents the flexible use of both water and foam when responding to multiple fires, preventing the need for water cooling and foam extinguishing.

[0003] Therefore, it is urgent to provide a fire truck with multi-channel foam ratio control, a foam control system and a control method to overcome the above-mentioned defects. Summary of the Invention

[0004] The present invention aims to provide a fire truck with multi-channel foam proportional control, a foam control system and a control method, which can solve the above technical problems.

[0005] According to one aspect of the present invention, a foam control system for a fire truck is provided, comprising a water supply system and a foam supply system, wherein the water supply system comprises a water tank (4), a fire pump (11), a pump water inlet pipeline (12), and a pump water outlet pipeline (13) having a plurality of pump water outlet branch pipelines; wherein the pump water inlet pipeline (12) is in communication with the water tank (4), each pump water outlet branch pipeline of the pump water outlet pipeline (13) is in communication with fire fighting equipment, and the pump water inlet pipeline (12) and the pump water outlet pipeline (13) are in communication with the fire pump (11); the foam supply system comprises a foam tank (3), a foam pump liquid inlet pipeline (5), a foam pump (6), a foam pump liquid outlet pipeline (7), and a foam flow control valve (9); wherein the foam pump liquid outlet pipeline (7) comprises a foam pump liquid outlet main pipeline (17) and a foam pump liquid outlet branch pipeline. The foam pump outlet pipe branch (18) is connected to the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch (18) respectively, and is connected to each pump outlet pipe branch of the pump outlet pipe (13); the foam pump inlet pipe (5) is connected to the foam tank (3); the foam flow control valve (9) is respectively arranged in the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch (18); the foam pump inlet pipe (5) and the foam pump outlet pipe (7) are connected to the foam pump (6); wherein, by respectively controlling the foam flow of the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch (18) and the water flow in each pump outlet pipe branch of the pump outlet pipe (13), the fire-fighting equipment can spray water and / or spray mixed foam mixed with water in a certain proportion.

[0006] Preferably, the control system (16) is used to respectively control the foam flow rate of the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch line (18) and the water flow rate in each pump outlet pipe branch line of the pump outlet pipe (13), so that the fire-fighting equipment can spray water and / or spray the mixed foam.

[0007] Preferably, the water supply system further comprises a water outlet flow meter (14), wherein the water outlet flow meter (14) is arranged in each pump outlet pipe branch of the pump outlet pipe (13); the foam supply system further comprises a foam flow meter (10), wherein the foam flow meter (10) is respectively arranged in the foam pump outlet pipe branch (18) and the foam pump outlet pipe main line (17); the control system (16) controls the flow of the foam pump (6) and / or the foam flow control valve (9) according to the water outlet flow meter (14) and the foam flow meter (10) in the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch (18), so that the water and foam in each pump outlet pipe branch of the pump outlet pipe (13) are mixed in a certain proportion.

[0008] Preferably, the foam pump liquid outlet pipeline (7) has a plurality of foam pump liquid outlet pipe branches (18); wherein each foam pump liquid outlet pipe branch (18) is connected to a corresponding pump outlet pipe branch.

[0009] Preferably, the foam control system further comprises: a water outlet one-way valve (15), wherein the water outlet one-way valve (15) is arranged in each pump outlet pipe branch of the pump outlet pipe (13).

[0010] Preferably, the foam control system further comprises: a foam liquid outlet one-way valve (8), wherein the foam liquid outlet one-way valve (8) is respectively arranged in the foam pump liquid outlet pipe main line (17) and the foam pump liquid outlet pipe branch line (18).

[0011] Preferably, a water outlet flow control valve is provided in each pump outlet pipe branch of the pump outlet pipe (13); wherein the control system (16) controls the foam flow control valve (9) and the water outlet flow control valve, thereby controlling the foam flow in the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch (18) and the water outlet flow in each pump outlet pipe branch of the pump outlet pipe (13).

[0012] Preferably, each pump outlet pipe branch of each pump outlet pipe (13) is provided with the water outlet flow control valve.

[0013] Preferably, the control system (16) has a control terminal, through which corresponding parameters can be input to control the water and foam mixing ratio in each pump outlet pipe branch of the pump outlet pipe (13).

[0014] On the other hand, the present invention further provides a fire truck, which includes the foam control system described above.

[0015] Preferably, the fire truck further comprises: a transmission system (2), one end of which is connected to the power take-off (1-1) on the chassis (1), and the other end of which is connected to the fire pump (11), for providing a power source for the fire pump (11).

[0016] Preferably, the transmission system (2) comprises: a plurality of connected transmission shafts.

[0017] Preferably, the fire truck further comprises an equipment box, wherein the transmission system (2), water supply system, foam supply system and control system (16) are all accommodated in the equipment box.

[0018] The present invention also provides a foam control method for a fire truck, comprising the following steps: controlling the flow rate of a foam pump (6) and / or a foam flow control valve (9) in the foam pump outlet pipe main line (17) and / or the foam pump outlet pipe branch line (18) according to water flow rate data of a water flow meter (14) in each pump outlet pipe branch line of the pump outlet pipe (13) and foam flow rate data of a foam flow meter (10) in the foam pump outlet pipe main line (17) and / or the foam pump outlet pipe branch line (18); and mixing the foam amount from the foam pump outlet pipe main line (17) and / or the foam pump outlet pipe branch line (18) with the water flow amount from each pump outlet pipe branch line of the pump outlet pipe (13) in a certain proportion to obtain mixed foam.

[0019] Preferably, the foam control method further comprises the following steps: the control system (16) collects the water flow rate data of the water flow meter (14) in each pump outlet pipe branch of the pump outlet pipe (13) and the foam flow rate data of the foam flow meter (10) in the foam pump outlet pipe main line (17) and / or the foam pump outlet pipe branch (18); wherein the control system (16) controls the flow rate of the foam pump (6) and / or the foam flow control valve (9) based on the water flow rate data and the foam flow rate data.

[0020] Preferably, the control system (16) collects the foam flow data from the foam flow meter (10) in the foam pump outlet pipe main line (17) and / or multiple foam pump outlet pipe branches (18), and collects the water outlet flow data from the water outlet flow meter (14) in each pump outlet pipe branch of the pump outlet pipe (13), and controls the flow of the foam pump (6) and / or the foam flow control valve (9) in the foam pump outlet pipe main line (17) and / or each foam pump outlet pipe branch (18) based on the foam flow data in the foam pump outlet pipe main line (17) and / or each foam pump outlet pipe branch (18) and the water outlet flow data of a pump outlet pipe branch connected thereto.

[0021] Preferably, the foam control method further comprises the following steps: the control system (16) selects one of the following fire extinguishing methods or a combination of multiple fire extinguishing methods according to the received instructions: spraying water, spraying the mixed foam, and spraying water and the mixed foam at the same time.

[0022] Preferably, if the control system (16) determines that only water is to be sprayed, the foam supply system is closed and the water supply system is opened, so that the fire-fighting equipment only sprays water; or if the control system (16) determines that only the mixed foam is to be sprayed, the water supply system and the foam supply system are opened, so that the foam pump outlet pipe main line (17) and at least one of the multiple foam pump outlet pipe branches (18) corresponding to the pump outlet pipe (13) mix water and foam in a certain proportion, so that the fire-fighting equipment sprays the mixed foam; or if the control system (16) determines that water and the mixed foam are to be sprayed at the same time, the foam flow control valve (9) is controlled to close the foam pump outlet pipe main line (17) and at least one of the multiple foam pump outlet pipe branches (18), so that the fire-fighting equipment sprays water and the mixed foam at the same time.

[0023] The present invention provides a fire truck, foam control system and control method with multi-channel foam proportion control. On the one hand, by setting up a water supply system and a foam supply system, the fire-fighting equipment can spray only water or spray a mixed foam of foam and water in a certain proportion, so that different fire-fighting media can be freely combined and flexibly matched for fire-fighting in different fire scenes, thereby improving the fire-fighting efficiency and reducing the loss of fire-fighting media; on the other hand, by introducing a control system, the mixed foam proportion is made more accurate, and mixed foam with the required proportion and required flow rate can be sprayed for different types of fires, further improving the fire-fighting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 A schematic structural diagram of a fire truck with multi-channel foam ratio control according to an embodiment of the present invention is shown;

[0026] Figure 2 A partial schematic diagram of a water supply pipeline and a foam supply pipeline of a fire truck according to an embodiment of the present invention is shown;

[0027] Figure 3 A flow chart of a foam control method according to an embodiment of the present invention is shown;

[0028] Figure 4 A flow chart showing a method for obtaining mixed foam according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0030] Figure 1 The schematic diagram of the structure of a fire truck with multi-channel foam proportional control is shown. Figure 2 The diagram shows a partial schematic diagram of the water supply pipeline and foam supply pipeline of the fire truck. Figure 1 and Figure 2 As shown, the fire truck includes a chassis 1, a transmission system 2, a water supply system, a foam supply system and an equipment box 19. The transmission system 2, the water supply system and the foam supply system are all contained in the equipment box 19; the water supply system includes a water tank 4, a fire pump 11, a pump water inlet pipe 12 and a pump water outlet pipe 13. The water tank 4 is connected to the pump water inlet pipe 12, and the pump water outlet pipe 13 is connected to firefighting equipment (such as a fire hose, a fire monitor, a foam monitor, etc.). The pump water inlet pipe 12 and the pump water outlet pipe 13 are connected to the fire pump 11. Under the action of the fire pump 11, the water in the water tank 4 passes through the pump water inlet pipe 12 and the pump water outlet pipe 13. 3, sprayed by firefighting equipment, or mixed with foam from the foam pump outlet pipe 7 in a certain proportion to form mixed foam, which is then sprayed by firefighting equipment; the foam supply system includes a foam tank 3, a foam pump inlet pipe 5, a foam pump 6, a foam pump outlet pipe 7, and a foam flow control valve 9. Under the action of the foam pump 6, the foam in the foam tank 3 passes through the foam pump inlet pipe 5 and the foam pump outlet pipe 7, and then enters the pump outlet pipe 13, where it mixes with the water in the pump outlet pipe 13 in a certain proportion to form mixed foam, which is then sprayed by firefighting equipment. The foam flow control valve 9 is disposed in the foam pump outlet pipe 7 to control the foam flow in the foam pump outlet pipe 7.

[0031] Reference Figure 2In the above embodiment, the foam pump outlet pipe 7 includes a main foam pump outlet pipe 17 and a branch foam pump outlet pipe 18, wherein the foam flow control valve 9 is provided in both the main foam pump outlet pipe 17 and the branch foam pump outlet pipe 18. Under the action of the foam pump 6, the foam from the foam tank 3 is mixed with the water in the pump outlet pipe 13 in a certain proportion to form mixed foam, which is then sprayed by the fire-fighting equipment 23. Alternatively, under the action of the foam pump 6, the foam from the foam tank 3 enters the pump outlet pipe 13 through the branch foam pump outlet pipe 18, is mixed with water in a certain proportion to form mixed foam, and is then sprayed by the fire-fighting equipment 23 and / or the fire-fighting equipment connected to the interfaces 20-22.

[0032] In the above embodiment, preferably, the foam pump outlet pipe branch 18 includes two or more foam pump outlet pipe branches 18, and the pump outlet pipe 13 includes two or more pump outlet pipe branches, such as pump outlet pipe branches 20-22, etc. Each pump outlet pipe branch of the pump outlet pipe 13 is respectively connected to the foam pump outlet pipe main line 17 and the foam pump outlet pipe branch 18. For example, each foam pump outlet pipe branch 18 is connected to a corresponding one of the pump outlet pipe branches 20-22. More preferably, the number of the foam pump outlet pipe branches 18 is the same as the number of the pump outlet pipe branches 20-22.

[0033] In the above embodiment, when dealing with multiple types of fire scenes, water and foam can be used flexibly at the same time. Specifically, when only water is sprayed to cool down the place that only needs cooling, the foam supply system is turned off and the water supply system is turned on, so that the fire-fighting equipment only sprays water, for example, the foam pump 6, the main foam pump outlet pipe 17 and the branch foam pump outlet pipe 18 are turned off, so that the fire-fighting equipment only sprays water; when mixed foam needs to be sprayed for fire extinguishing, the water supply system and the foam supply system are turned on, so that the foam of at least one of the main foam pump outlet pipe 17 and the multiple branch foam pump outlet pipes 18 is mixed with the water of the corresponding branch water pipe of the pump outlet pipe 13 in a certain proportion, and the fire-fighting equipment sprays mixed foam formed by mixing water and foam in a certain proportion.

[0034] For example, the main foam pump outlet pipe 17 and the pump outlet pipe branch of the pump outlet pipe 13 corresponding to the main foam pump outlet pipe 17 are opened, and water and foam are mixed in a certain proportion, and the fire-fighting equipment sprays mixed foam formed by mixing water and foam in a certain proportion; when it is necessary to spray water and mixed foam at the same time to extinguish fires in different places, the main foam pump outlet pipe 17 and at least one of the multiple foam pump outlet pipe branches 18 are closed by controlling the foam flow control valve 9, so that at least one fire-fighting equipment Spray water and at least one fire-fighting equipment sprays mixed foam. For example, the foam flow control valve 9 in the foam pump outlet pipe branch 18 connected to the pump outlet pipe branch 20-22 is controlled so that the foam pump outlet pipe branch 18 is closed. Then the fire-fighting equipment connected to the pump outlet pipe branch 20-22 sprays water, and the fire-fighting equipment 23 connected to the foam pump outlet pipe main line 17 sprays mixed foam which is a mixture of the foam in the foam pump outlet pipe main line 17 and the water in the pump outlet pipe 13 in a certain proportion.

[0035] In the above embodiment, preferably, a water outlet flow control valve (not shown) is provided in the pump outlet pipe 13 for controlling the water outlet flow rate in the pump outlet pipe 13. More preferably, a water outlet flow control valve (not shown) is provided in each pump outlet pipe branch of the pump outlet pipe 13 for controlling the water outlet flow rate in each pump outlet pipe branch of the pump outlet pipe 13, thereby more conveniently controlling the mixing ratio of water in the pump outlet pipe 13 and foam in the foam pump outlet pipe main pipe 17 and the plurality of foam pump outlet pipe branches 18.

[0036] In the above embodiment, the fire truck preferably further includes a control system 16. A water flow meter 14 is provided in the pump outlet pipe 13, and a foam flow meter 10 is provided in the foam pump liquid outlet pipe 7. The control system 16 is capable of controlling the operation of the water flow meter 14, the foam flow meter 10, the foam flow control valve 9, the foam pump 6, the fire pump 11, the water flow control valve, and other components. More preferably, a water flow meter 14 is provided in each branch of the pump outlet pipe 13, and a foam flow meter 10 is provided in each branch of the foam pump liquid outlet pipe 7.

[0037] In the above embodiment, the control system 16 accurately controls the flow of the foam pump 6 and / or the foam flow control valve 9 by receiving the flow data of the water outlet flow meter 14 and the flow data of the foam flow meter 10. It can not only make the water and foam in each pump outlet pipe branch of the pump outlet pipe 13 mixed into mixed foam according to the proportion preset in the control system 16, but also control the flow of the sprayed mixed foam, so that the foam control system can spray mixed foam of the required proportion and required flow for different types of fires, further improving the fire extinguishing efficiency.

[0038] In the above embodiment, preferably, the chassis 1 includes a power take-off 1-1, one end of the transmission system 2 is connected to the power take-off 1-1, and the other end is connected to the fire pump 11, for providing a power source for the fire pump 11 to increase the water output rate.

[0039] In the above embodiment, preferably, the pump outlet pipe 13 is provided with a water outlet check valve 15, and the foam pump outlet pipe 7 is provided with a foam outlet check valve 8, so as to prevent backflow of water in the pump outlet pipe 13 and backflow of foam in the foam pump outlet pipe 7. More preferably, each pump outlet pipe branch of the pump outlet pipe 13 is provided with the water outlet check valve 15, and each foam pump outlet pipe main pipe 17 and each foam pump outlet pipe branch 18 of the foam pump outlet pipe 7 is provided with a foam outlet check valve 8.

[0040] In the above embodiment, preferably, the foam liquid outlet one-way valve 8 is arranged near the outlet of the foam pump 6 .

[0041] In this embodiment, the control system 16 preferably includes a control terminal through which corresponding parameters are input to control the water-foam mixing ratio in the pump outlet pipe 13. This allows the foam control system to automatically adjust the water-foam mixing ratio according to preset parameters without manual judgment, thereby reducing personal risks during firefighting and improving firefighting efficiency. In this embodiment, the transmission system 2 preferably includes multiple connected transmission shafts, which not only enable rapid transmission of driving force to the fire pump 11 but also allow for rapid disassembly and installation, reducing maintenance costs.

[0042] The present invention also provides a foam control method, which enables the control system 16 to select one of the following fire extinguishing methods or a combination of multiple fire extinguishing methods according to the received instructions: spraying water, spraying foam, and spraying mixed foam of foam and water.

[0043] Figure 3 FIG. 1 is a flow chart showing a foam control method according to an embodiment of the present invention. Figure 3 As shown, the method includes the following steps:

[0044] When a fire occurs, step S1 is executed, and the control system 16 receives a fire extinguishing method instruction and starts the fire extinguishing process.

[0045] After the fire extinguishing process is started, step S2 is executed, and the control system 16 determines which fire extinguishing method is adopted for this fire extinguishing.

[0046] In step S3, it is determined whether to spray water according to the received fire extinguishing method.

[0047] If it is determined to be water spraying, step S4 is executed to start the water spraying fire extinguishing mode: the foam supply system is closed and the water supply system is opened so that the fire fighting equipment only sprays water.

[0048] If it is determined that more than water is sprayed, step S5 is executed, and the control system 16 determines whether only the mixed foam is sprayed.

[0049] If it is determined that only mixed foam is to be sprayed, step S6 is executed to start the mixed foam fire extinguishing mode: the above-mentioned water supply system and the above-mentioned foam supply system are turned on, so that the above-mentioned foam pump outlet pipe main line 17 and the multiple foam pump outlet pipe branches 18, at least one of which is corresponding to the above-mentioned pump outlet pipe 13, mix water and foam in a certain proportion, so that the fire-fighting equipment sprays mixed foam formed by the mixture of water and foam.

[0050] If it is determined that more than the mixed foam is sprayed, step S7 is executed to determine whether the water and the mixed foam are sprayed simultaneously.

[0051] If it is determined to be spraying water and mixed foam, execute step S8 to start the water and mixed foam fire extinguishing mode: by controlling the above-mentioned foam flow control valve 9, close the above-mentioned foam pump outlet pipe main line 17 and at least one of the multiple foam pump outlet pipe branches 18, so that at least one fire-fighting equipment sprays water and at least one fire-fighting equipment sprays mixed foam.

[0052] When the injection in step S4, S6 or S8 meets the preset conditions, step S11 is executed to determine whether an end instruction is received. If no end instruction is received, the process continues to wait for the end instruction. If an end instruction is received, the entire process ends.

[0053] The advantage of the above process is that when a fire occurs, different areas at the same fire scene often require different fire-fighting media for fire extinguishing, which is difficult to handle with traditional foam control methods. This method can automatically select a free combination and flexible matching of water and mixed foam fire extinguishing methods, which not only can deal with complex fire scenes, but also further improves fire extinguishing efficiency.

[0054] Figure 4 Shown Figure 3 Flow chart of the mixed foam obtaining method of steps S6 and S8. Figure 4 As shown, the method includes the following steps:

[0055] After it is determined that foam needs to be mixed, step S201 is executed to collect water flow data from a water flow meter in the water outlet pipe of the pump and foam flow data from a foam flow meter in the liquid outlet pipe branch of the foam pump.

[0056] After completing step S201, step S202 is executed to control the foam flow of the foam pump and the foam flow control valve according to the collected water flow data and foam flow data.

[0057] Then, step S203 is executed, in which the foam in the liquid outlet branch of the foam pump is mixed with the water in the water outlet pipe of the pump in a predetermined ratio to obtain mixed foam.

[0058] The advantage of the above process is that when a fire occurs, the foam pump and the foam flow control valve can be controlled according to the water flow data and the foam flow data, so as to quickly obtain the required proportion of mixed foam, thereby improving the fire extinguishing efficiency.

[0059] In this embodiment, the control system 16 collects the water outlet flow data of the water outlet flow meter 14 in the pump outlet pipe 13 and the foam flow data of the foam flow meter 10 in the above-mentioned foam pump outlet pipe main line 17 and / or the foam pump outlet pipe branch line 18; wherein, the control system 16 controls the flow of the foam pump 6 and / or the foam flow control valve 9 based on the water outlet flow data and the foam flow data.

[0060] Setting up the control system 16 can receive water flow data and foam flow data more quickly, and can also more accurately control the foam flow of the foam pump 6 and / or the foam flow control valve 9, so as to obtain the required proportion of mixed foam more quickly and further improve the fire extinguishing efficiency.

[0061] In this embodiment, the control system 16 collects foam flow data from the foam flow meter 10 in the above-mentioned foam pump outlet pipe main line 17 and multiple foam pump outlet pipe branches 18, and collects water flow data from the water flow meter 14 in multiple pump outlet pipe branches, and controls the flow of the foam pump 6 and / or the foam flow control valve 9 based on the foam flow data in the above-mentioned foam pump outlet pipe main line 17 and each foam pump outlet pipe branch 18 and the water flow data of a pump outlet pipe branch connected thereto.

[0062] The control system 16 can collect the foam flow data of the above-mentioned foam pump outlet pipe main line 17 and / or multiple foam pump outlet pipe branches 18 and the water flow data of multiple pump outlet pipe branches, and control the flow of the foam pump 6 and / or the above-mentioned foam pump outlet pipe main line 17 and the foam flow control valve 9 in each foam pump outlet pipe branch 18, so as to quickly and accurately generate multiple groups of mixed foams in different proportions, which can not only deal with fire scenes with complex scenes, but also further improve the fire extinguishing efficiency.

[0063] On the one hand, the present invention provides a water supply system and a foam supply system, so that the fire-fighting equipment can spray water or a mixed foam of foam and water in a certain proportion, so that different fire-fighting media can be freely combined and flexibly matched for fire-fighting in different fire scenes, thereby improving the fire-fighting efficiency and reducing the loss of fire-fighting media; on the other hand, by introducing a control system, the mixed foam ratio is made more accurate, and the mixed foam of the required proportion and required flow rate can be sprayed for different types of fires, further improving the fire-fighting efficiency.

[0064] It should be noted that for certain implementations, if they are not the key content of the present invention and are well known to ordinary technicians in the relevant technical field, they are not described in detail in the drawings or the main text of the specification. In this case, they can be understood by referring to relevant existing technologies.

[0065] Furthermore, the above embodiments are provided solely for the purpose of enabling the present invention to satisfy legal requirements. The present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Furthermore, the above definitions of the various elements and methods are not limited to the specific structures, shapes, or methods described in the embodiments, and those skilled in the art may readily modify or substitute them.

[0066] It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only reference to the directions of the drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, the same elements are represented by the same or similar figure marks. Conventional structures or constructions will be omitted when they may cause confusion in the understanding of the present invention. The shapes and sizes of the components in the figures do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present invention. In addition, in the claims, any reference symbols placed between brackets should not be constructed as limitations on the claims.

[0067] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in specific contexts.

[0068] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The use of ordinal numbers such as "first" and "second," as well as Arabic numerals and letters in the specification and claims to modify corresponding elements is intended only to clearly distinguish an element with a certain name from another element with the same name, and does not imply any ordinal number for the element, nor does it represent the order of one element relative to another.

[0069] Similarly, it should be understood that in order to streamline the present invention and aid understanding of one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this inventive approach should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims, various inventive aspects lie in less than all the features of the preceding individual embodiments. Accordingly, the claims that follow the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the present invention.

[0070] The specific embodiments described above provide a detailed description of the objectives, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A foam control system for a fire truck, comprising a water supply system and a foam supply system, characterized in that: The water supply system comprises a water tank (4), a fire pump (11), a pump water inlet pipe (12), and a pump water outlet pipe (13) having a plurality of pump water outlet pipe branches; wherein the pump water inlet pipe (12) is in communication with the water tank (4), each pump water outlet pipe branch of the pump water outlet pipe (13) is in communication with fire fighting equipment, and the pump water inlet pipe (12) and the pump water outlet pipe (13) are in communication with the fire pump (11); The foam supply system comprises a foam tank (3), a foam pump inlet pipeline (5), a foam pump (6), a foam pump outlet pipeline (7) and a foam flow control valve (9); wherein the foam pump outlet pipeline (7) comprises a foam pump outlet pipeline main line (17) and a foam pump outlet pipeline branch line (18); the foam pump outlet pipeline main line (17) and the foam pump outlet pipeline branch line (18) are respectively connected to each pump outlet pipeline branch line of the pump outlet pipeline (13); the foam pump inlet pipeline (5) is connected to the foam tank (3); the foam flow control valve (9) is respectively arranged in the foam pump outlet pipeline main line (17) and the foam pump outlet pipeline branch line (18); the foam pump inlet pipeline (5) and the foam pump outlet pipeline (7) are connected to the foam pump (6); By respectively controlling the foam flow rates of the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch line (18) and the water flow rates in each pump outlet pipe branch line of the pump outlet pipe (13), the fire-fighting equipment can spray water and / or spray mixed foam obtained by mixing foam and water in a certain proportion.

2. The foam control system according to claim 1, further comprising a control system (16) characterized in that: The control system (16) is used to respectively control the foam flow rate of the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch line (18) and the water flow rate in each pump outlet pipe branch line of the pump outlet pipe (13), so that the fire-fighting equipment can spray water and / or spray the mixed foam.

3. The foam control system according to claim 1, further comprising a control system (16) characterized in that: The water supply system further comprises a water outlet flow meter (14), wherein the water outlet flow meter (14) is arranged in each pump outlet pipe branch of the pump outlet pipe (13); The foam supply system further comprises a foam flow meter (10), wherein the foam flow meter (10) is respectively arranged in the foam pump liquid outlet pipe branch (18) and the foam pump liquid outlet pipe main pipe (17); The control system (16) controls the flow rate of the foam pump (6) and / or the foam flow control valve (9) according to the water outlet flow meter (14) and the foam flow meter (10) in the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch line (18), so that the water and foam in each pump outlet pipe branch line of the pump outlet pipe (13) are mixed in a certain proportion.

4. The foam control system according to any one of claims 1 to 3, characterized in that: The foam pump liquid outlet pipeline (7) has a plurality of foam pump liquid outlet pipe branches (18); Each of the foam pump liquid outlet pipe branches (18) is connected to a corresponding pump water outlet pipe branch.

5. The foam control system according to any one of claims 1 to 3, characterized in that: Also includes: A water outlet one-way valve (15), wherein the water outlet one-way valve (15) is arranged in each pump outlet pipe branch of the pump outlet pipe (13).

6. The foam control system according to any one of claims 1 to 3, characterized in that: Also includes: A foam liquid outlet one-way valve (8), wherein the foam liquid outlet one-way valve (8) is respectively arranged in the foam pump liquid outlet pipe main line (17) and the foam pump liquid outlet pipe branch line (18).

7. The foam control system according to claim 3, characterized in that: Each pump outlet pipe branch of the pump outlet pipe (13) is provided with a water outlet flow control valve; The control system (16) controls the foam flow control valve (9) and the water outlet flow control valve, thereby controlling the foam flow in the foam pump outlet pipe main line (17) and the foam pump outlet pipe branch line (18) and the water outlet flow in each pump outlet pipe branch line of the pump outlet pipe (13).

8. The foam control system according to claim 7, characterized in that: Each pump outlet pipe branch of each pump outlet pipe (13) is provided with the water outlet flow control valve.

9. The foam control system according to claim 2, characterized in that: The control system (16) has a control end, through which corresponding parameters can be input to control the mixing ratio of water and foam in each pump outlet pipe branch of the pump outlet pipe (13).

10. A fire truck, characterized in that: include: The foam control system according to any one of claims 1 to 9.

11. The fire truck according to claim 9, characterized in that: Also includes: The transmission system (2) has one end connected to the power take-off (1-1) on the chassis (1) and the other end connected to the fire pump (11) for providing a power source for the fire pump (11).

12. The fire truck according to claim 11, characterized in that: The transmission system (2) comprises: a plurality of connected transmission shafts.

13. The fire truck according to claim 10, characterized in that: It also includes an equipment box, wherein the transmission system (2), the water supply system, the foam supply system and the control system (16) are all accommodated in the equipment box.

14. A foam control method for a fire truck, characterized in that: The following steps are involved: Controlling the flow rate of the foam pump (6) and / or the foam flow control valve (9) in the foam pump liquid outlet main line (17) and / or the foam pump liquid outlet branch line (18) according to the water flow rate data of the water flow meter (14) in each pump water outlet branch line of the pump water outlet line (13) and the foam flow rate data of the foam flow meter (10) in the foam pump liquid outlet main line (17) and / or the foam pump liquid outlet branch line (18); The foam amount from the foam pump liquid outlet pipe main line (17) and / or the foam pump liquid outlet pipe branch line (18) is mixed with the water output from each pump outlet pipe branch line of the pump outlet pipe (13) in a certain proportion to obtain mixed foam.

15. The foam control method according to claim 14, characterized in that: The following steps are also included: The control system (16) collects water flow rate data from the water flow meter (14) in each pump water outlet pipe branch of the pump water outlet pipe (13) and foam flow rate data from the foam flow meter (10) in the foam pump liquid outlet pipe main line (17) and / or the foam pump liquid outlet pipe branch (18); Wherein, the control system (16) controls the flow of the foam pump (6) and / or the foam flow control valve (9) based on the water outlet flow data and the foam flow data.

16. The foam control method according to claim 15, characterized in that: The control system (16) collects the foam flow rate data from the foam flow meter (10) in the foam pump outlet pipe main line (17) and / or multiple foam pump outlet pipe branches (18), and collects the water outlet flow rate data from the water outlet flow meter (14) in each pump outlet pipe branch of the pump outlet pipe (13), and controls the flow rate of the foam pump (6) and / or the foam flow control valve (9) in the foam pump outlet pipe main line (17) and / or each foam pump outlet pipe branch (18) based on the foam flow rate data in the foam pump outlet pipe main line (17) and / or each foam pump outlet pipe branch (18) and the water outlet flow rate data of a pump outlet pipe branch connected thereto.

17. The foam control method according to claim 15 or 16, characterized in that: The following steps are also included: The control system (16) selects one of the following fire extinguishing methods or a combination of multiple fire extinguishing methods according to the received instructions: spraying water, spraying the mixed foam, and spraying water and the mixed foam at the same time.

18. The foam control method according to claim 15, wherein: If the control system (16) determines that only water is to be sprayed, the foam supply system is closed and the water supply system is opened so that the fire fighting equipment only sprays water; or If the control system (16) determines that only the mixed foam is to be sprayed, the water supply system and the foam supply system are turned on, so that the foam pump outlet pipe main line (17) and at least one of the plurality of foam pump outlet pipe branches (18) corresponding to the pump outlet pipe (13) mix water and foam in a certain proportion, so that the fire-fighting equipment sprays the mixed foam; or If the control system (16) determines that water and the mixed foam are to be sprayed simultaneously, the foam flow control valve (9) is controlled to close the main foam pump outlet pipe (17) and at least one of the multiple foam pump outlet pipe branches (18), so that the fire-fighting equipment sprays water and the mixed foam simultaneously.

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