Fire fighting system assembly and fire fighting equipment

Abstract

The invention belongs to the technical field of fire fighting equipment and provides a fire fighting system assembly and fire fighting equipment, the fire fighting system assembly comprises a foam supply system and a controller, the foam supply system comprises a foam supply unit, a foam pumping unit and a flow adjusting pipeline which are connected in sequence, and one end of the flow adjusting pipeline is connected to an outlet of the foam pumping unit through a pipeline; the flow adjusting pipeline is used for shunting foam pumped out by the foam pumping unit, a flow adjusting valve with an adjustable opening degree is arranged on the flow adjusting pipeline, and the controller is used for controlling the output flow of the foam pumping unit and the opening degree of the flow adjusting valve when the foam is output outwards. Coarse adjustment of the foam flow is achieved by directly controlling the output flow of the foam pumping unit firstly, then fine adjustment of the foam flow is achieved by changing the opening degree of the flow adjusting valve, and therefore the final outward output flow of foam can be accurately adjusted to the target value within a short time.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire fighting equipment, and in particular relates to a fire fighting system assembly and fire fighting equipment. Background Art

[0002] The foam supply methods of the fire fighting system on the existing fire trucks are mainly negative pressure suction type and positive pressure injection type. The negative pressure suction type mainly relies on the high-speed flow of water flowing through the venturi tube to generate negative pressure in the venturi tube, so that the foam is sucked in and mixed with water. The size of the negative pressure generated by this method cannot be controlled, so the foam flow cannot be accurately controlled. The positive pressure injection type mainly relies on the foam pump to press the foam to the inlet or outlet of the water pump. Due to the low output flow control accuracy of the foam pump, slow control response speed, and hysteresis loop in hydraulic control, it is also impossible to achieve accurate supply of foam flow. Summary of the invention

[0003] In view of the above-mentioned defects or shortcomings, the present invention provides a fire fighting system assembly and fire fighting equipment, aiming to solve the technical problem that the foam of the existing fire fighting system cannot achieve accurate foam flow supply.

[0004] To achieve the above-mentioned purpose, the present invention provides a fire protection system assembly, which includes a foam supply system and a controller. The foam supply system includes a foam supply unit, a pump foam unit and a flow regulating pipeline connected in sequence. One end of the flow regulating pipeline is connected to the outlet of the pump foam unit. The flow regulating pipeline is used to divert the foam pumped out by the pump foam unit. A flow regulating valve with adjustable opening is provided on the flow regulating pipeline. The controller is used to control the output flow of the pump foam unit and the opening of the flow regulating valve when the foam is output to the outside.

[0005] In an embodiment of the present invention, the external output of foam is controlled by a foam output instruction. After receiving the foam output instruction, the controller is configured to:

[0006] in response to a foam output instruction;

[0007] Control the operation of the pump foam unit according to the foam output instruction;

[0008] Controlling the pump foam unit to change the output flow rate until the difference between the theoretical output flow rate of the pump foam unit and the actual required flow rate of the foam is positive and less than a first preset value;

[0009] The flow regulating valve is controlled to increase or decrease its opening until the difference between the final output flow of the foam supply system and the actual required flow is smaller than a second preset value.

[0010] In an embodiment of the present invention, the fire fighting system assembly further includes a water supply system, the outlet pipe of the pump foam unit is connected to the water supply system, the foam output instruction includes a foam internal delivery instruction for controlling the foam output by the pump foam unit to flow to the water supply system, and the controller is further configured to:

[0011] Verify that the water supply system is in working condition and that the pipes between the pump foam unit and the water supply system are connected.

[0012] In an embodiment of the present invention, the water supply system includes a water supply unit, a water pump unit and a spray unit connected in sequence, the outlet of the pump foam unit is connected to the outlet pipeline of the pump water unit, and confirming that the pipeline connection between the pump foam unit and the water supply system specifically includes:

[0013] Confirm that the pipe connection from the outlet of the pump foam unit to the outlet of the pump water unit is established.

[0014] In an embodiment of the present invention, the water supply system includes a water supply unit, a water pump unit and a spray unit connected in sequence, and the foam supply system also includes an output control unit, the output control unit is provided with a first output port and a second output port, the first output port is connected to the inlet pipe of the water pump unit, and the second output port is connected to the outlet pipe of the water pump unit. Confirming that the pipe connection between the pump foam unit and the water supply system specifically includes:

[0015] When the water pump unit is in working state, it is confirmed that the first output port of the output control unit is opened and the second output port is closed. When the water pump unit is in non-working state, it is confirmed that the second output port of the pump foam unit is opened and the first output port is closed.

[0016] In an embodiment of the present invention, the water supply system includes a direct water supply unit, which includes a direct water supply pipeline. One end of the direct water supply pipeline is used to connect to an external water supply source, and the other end is connected to the outlet pipeline of the water pump unit. When the water pump unit is in a non-working state, the controller also needs to confirm that the direct water supply unit is in a working state.

[0017] In an embodiment of the present invention, the foam supply system further comprises a foam external supply pipeline, on which an external supply control valve for controlling on and off is arranged, one end of the foam external supply pipeline is connected to the outlet pipeline of the pump foam unit, and the other end is connected to the outside, and the foam output instruction further comprises a foam external output instruction for opening and closing the external supply control valve;

[0018] After responding to the foam external supply instruction, the controller is further configured to:

[0019] Control the external supply control valve to open.

[0020] In an embodiment of the present invention, the foam supply unit includes a foam storage tank and a first foam pipeline, one end of the first foam pipeline is connected to the foam storage tank, and the other end is connected to the inlet pipeline of the pump foam unit. The first foam pipeline is provided with a tank supply control valve for controlling the on-off, and the tank supply control valve is control-connected to the controller. The controller is used to control the tank supply control valve to open after receiving a tank supply foam signal.

[0021] In an embodiment of the present invention, the foam supply unit also includes a second foam pipeline, one end of which is connected to the outside world, and the other end is connected to the inlet pipeline of the pump foam unit. The second foam pipeline is provided with an external suction control valve for controlling the on and off, and the external suction control valve is connected to the controller for control. The controller is used to control the external suction control valve to open after receiving the external foam supply signal, and control the tank supply control valve to remain closed.

[0022] In an embodiment of the present invention, the foam supply system also includes a pumping foam pipeline, on which is provided a pumping control valve for controlling on and off. One end of the pumping foam pipeline is connected to the foam storage tank, and the other end is connected to the outlet pipeline of the pump foam unit. The pumping control valve is connected to a controller control connection. The controller is used to control the pumping control valve and the external suction control valve to open after receiving a foam filling signal, and to control the tank supply control valve and the flow regulating valve to remain closed.

[0023] In an embodiment of the present invention, the fire protection system assembly also includes a foam flushing pipeline, one end of the foam flushing pipeline is connected to the water supply unit, and the other end is connected to the inlet pipeline of the pump foam unit. A foam flushing valve for controlling the on and off is provided on the foam flushing pipeline, and the foam flushing valve is control-connected to the controller. The controller is used to control the opening of the foam flushing valve after receiving the foam pipeline flushing signal.

[0024] In an embodiment of the present invention, the foam supply system also includes a discharge pipeline, one end of which is connected to the outlet pipeline of the pump foam unit, and the other end is connected to the outside world. The discharge pipeline is provided with a discharge control valve for controlling the on and off, and the discharge control valve is connected to the controller for control. The controller is also used to control the opening of the discharge control valve according to the foam pipeline flushing signal.

[0025] To achieve the above object, the present invention further provides a fire fighting device, wherein the fire fighting device comprises the fire fighting system assembly described above.

[0026] Through the above technical solution, the fire protection system assembly provided by the embodiment of the present invention has the following beneficial effects:

[0027] The fire protection system assembly realizes the coarse adjustment of the foam flow rate by first directly controlling the output flow rate of the pump foam unit, and then realizes the fine adjustment of the foam flow rate by changing the opening of the flow control valve, so that the final external output flow rate of the foam can be accurately adjusted to the target value in a relatively short time.

[0028] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a schematic diagram of the foam flow when the fire fighting system assembly with the output control unit according to the embodiment of the present invention is in the external suction-output foam working mode and the pump unit is shut down;

[0031] Figure 2 It is a schematic diagram of the movement of foam when the fire fighting system assembly with the output control unit according to the embodiment of the present invention is in the external suction-output foam working mode and the pump unit is in operation;

[0032] Figure 3 is a schematic diagram of the foam flow when the fire fighting system assembly with the output control unit according to the embodiment of the present invention is in a tank supply-output foam working mode and the pump unit is shut down;

[0033] Figure 4 is a schematic diagram of the foam flow when the fire fighting system assembly with the output control unit according to the embodiment of the present invention is in the tank supply-output foam working mode and the pump unit is in operation;

[0034] Figure 5 is a schematic diagram of the foam flow when the fire fighting system assembly with an output control unit according to an embodiment of the present invention is in an external suction-pumping foam working mode;

[0035] Figure 6 is a schematic diagram of the foam flow when the fire fighting system assembly with an output control unit according to an embodiment of the present invention is in an external suction-external foam supply working mode;

[0036] Figure 7 is a schematic diagram of the foam flow when the fire fighting system assembly with an output control unit according to an embodiment of the present invention is in a tank-supplied-external foam supply working mode;

[0037] Figure 8 is a schematic diagram of the flow of water when the fire protection system assembly with an output control unit according to an embodiment of the present invention is in a flushing working mode;

[0038] Fig. 9 is a schematic diagram of the foam flow when the fire fighting system assembly without an output control unit according to an embodiment of the present invention is in a tank supply-output foam working mode;

[0039] Fig.10 is a system framework diagram of a fire protection system assembly according to an embodiment of the present invention;

[0040] Fig.11 is an operation flow chart of the fire fighting system assembly according to an embodiment of the present invention when it is in a foam internal delivery mode;

[0041] Fig.12 It is an operation flow chart of the fire protection system assembly according to an embodiment of the present invention when it is in the tank supply-external foam supply working mode.

[0042] Description of Reference Numerals

[0043] S1, water supply system; 11, water supply unit; 111, water tank; 112, first water supply pipeline; 112a, tank water supply valve; 113, second water supply pipeline; 113a, external water supply valve; 12, pump unit; 13, spray unit; 131, fire gun; 132, fire monitor; 14, direct water supply unit; 141, direct water supply pipeline; S2, foam supply system; 21, foam supply unit; 211, first foam pipeline; 211a, foam storage tank; 211b, tank supply control valve; 212, second foam Foam pipeline; 212a, external suction control valve; 22, pump foam unit; 23, output control unit; P1, first output port; P2, second output port; 24, pump foam pipeline; 241, pump injection control valve; 25, flow regulating pipeline; 251, flow regulating valve; 26, foam external supply pipeline; 261, external supply control valve; 27, foam flushing pipeline; 271, foam flushing valve; 28, circulation pipe; 29, discharge pipeline; 291, discharge control valve; 31, one-way check valve; 32, pressure relief valve. DETAILED DESCRIPTION

[0044] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0045] The fire fighting system assembly of the present invention will be described below with reference to the accompanying drawings.

[0046] The present invention provides a fire fighting system assembly, such as Figure 1 and Figure 2 As shown, the fire protection system assembly includes a foam supply system S2 and a controller.

[0047] The foam supply system S2 includes a foam supply unit 21, a pump foam unit 22 and a flow regulating pipeline 25 connected in sequence. One end of the flow regulating pipeline 25 is connected to the outlet of the pump foam unit 22. The flow regulating pipeline 25 is used to divert the foam pumped out by the pump foam unit 22. The flow regulating pipeline 25 is provided with a flow regulating valve 251 with adjustable opening.

[0048] The controller is used to control the output flow rate of the pump foam unit 22 and the opening degree of the flow regulating valve 251 when the foam is output to the outside.

[0049] The pump foam unit 22 is generally a foam pump, and there is a positive proportional relationship between the rotation speed of the foam pump and the output flow rate. The controller can significantly change the output flow rate of the pump foam unit 22 by changing the rotation speed of the foam pump, so that the output flow rate of the pump foam unit 22 can be quickly adjusted to be close to the actual required flow rate of the foam. However, this method has low adjustment accuracy and can only roughly adjust the output flow rate of the pump foam unit 22 to be close to the actual required flow rate. The fire protection system assembly sets a flow regulating pipeline 25 and controls the opening of the flow regulating pipeline 25 through a controller. After the output flow rate of the pump foam unit 22 is close to the actual required flow rate of the foam, the opening of the flow regulating pipeline 25 can be changed to fine-tune the diverted flow rate of the flow regulating pipeline 25. By changing the diverted flow rate of the flow regulating pipeline 25, the external output flow rate of the pump foam unit 22 can be affected, thereby achieving precise adjustment of the final external output flow rate of the pump foam unit 22.

[0050] In summary, the fire protection system assembly achieves coarse adjustment of the foam flow by first directly controlling the output flow of the pump foam unit 22, and then achieves fine adjustment of the foam flow by changing the opening of the flow regulating valve 251, so that the final external output flow of the foam can be accurately adjusted to the target value in a shorter time.

[0051] In an embodiment of the present invention, the other end of the flow regulating pipe 25 may be connected to a circulation pipe 28 upstream of the inlet of the pump foam unit 22, or connected to other units capable of storing or temporarily storing foam.

[0052] In an embodiment of the present invention, the foam output function is controlled by a foam output instruction. After receiving the foam output instruction, the controller is specifically configured as follows:

[0053] in response to a foam output instruction;

[0054] Controlling the operation of the pump foam unit 22 according to the foam output instruction;

[0055] Controlling the pump foam unit 22 to change the output flow rate until the difference between the theoretical output flow rate of the pump foam unit 22 and the actual required flow rate of the foam is positive and less than a first preset value;

[0056] The flow regulating valve 251 is controlled to increase or decrease its opening until the absolute value of the difference between the final output flow of the foam supply system S2 and the actual required flow is smaller than the second preset value.

[0057] When the pump foam unit 22 is a foam pump, the controller changes the rotation speed of the foam pump.

[0058] Before responding to the foam output instruction, the controller also needs to obtain the actual required flow rate of the foam.

[0059] In the embodiment of the present invention, the external output of foam includes internal foam output and external foam output. Internal foam output refers to the foam in the foam supply system S2 being mixed with the fire water in the water supply system S1 and then sprayed out from the water outlet of the water supply system S1. The output of foam is through the pipeline of the water supply system S1 inside the fire fighting equipment. External foam output refers to the foam in the foam supply system S2 flowing directly from the external foam supply pipeline 26 to the outside. In both output modes, the controller can be used to achieve precise adjustment of the foam output flow rate.

[0060] In an embodiment of the present invention, the fire fighting system assembly further includes a water supply system S1, the outlet pipe of the pump foam unit 22 is connected to the water supply system S1, the foam output instruction includes a foam internal delivery instruction for controlling the foam output by the pump foam unit 22 to flow to the water supply system S1, and the controller is further configured to:

[0061] Confirm that the water supply system S1 is in working condition, and confirm that the pipeline between the pump foam unit 22 and the water supply system S1 is connected.

[0062] like Fig.11 As shown, after receiving the foam internal delivery instruction, the controller needs to confirm whether the start-up condition of the foam supply system S2 is met. In order to avoid the foam being sprayed out from the water supply system S1 alone and causing waste, the start-up condition can be set to that the water supply system S1 is in a working state and the pipeline between the pump foam unit 22 and the water supply system S1 is connected. Confirming that the water supply system S1 is in a working state means that water is sprayed out from the water supply system S1.

[0063] like Fig. 9 As shown, in one embodiment of the present invention, the water supply system S1 includes a water supply unit 11, a water pump unit 12 and a spray unit 13 connected in sequence, and the outlet of the pump foam unit 22 is only connected to the outlet pipeline of the pump water unit 12. For this type of system assembly, confirming that the pipeline connection between the pump foam unit 22 and the water supply system S1 specifically includes:

[0064] Confirm that the pipe connection between the outlet of the pump foam unit 22 and the outlet of the pump water unit 12 is established.

[0065] By connecting the outlet of the pump foam unit 22 to the outlet pipeline of the pump water unit 12, the controller can easily calculate the actual required flow rate of the foam by simply detecting the current water flow rate of the pump water unit 12 and the desired mixing ratio of foam and water. The value of the desired mixing ratio of foam and water can be set manually.

[0066] Take the pump foam unit 22 as a foam pump as an example. Fig.11 As shown, after starting the foam pump and analyzing the actual required flow rate of the foam, it is necessary to adjust the foam output flow rate of the pump foam unit 22 to the fire water supply system 2. The change in the rotation speed of the foam pump will greatly change the output flow rate of the foam pump. By adjusting the rotation speed to change the output flow rate of the foam pump, this adjustment method can quickly adjust the output flow rate of the foam pump to be close to the actual required flow rate. However, this method has low adjustment accuracy and can only roughly adjust the output flow rate (actual rotation speed) of the foam pump to be close to the actual required flow rate (theoretical rotation speed). For example, if the actual required flow rate of the foam is 80L / min, by adjusting the rotation speed of the foam pump, its output flow rate can only be guaranteed to be within the range of (80±80*3%)L / min.

[0067] After the theoretical output flow of the foam pump is adjusted to be slightly larger than the actual required flow, in order to further adjust the foam output flow of the foam pump, the excess foam output by the foam pump can be refluxed by means of the flow regulating pipeline 25. The maximum flow that the flow regulating pipeline 25 can reflux is much smaller than the output flow of the foam pump. For example, the maximum reflux flow of the flow regulating pipeline 25 can be 10% or less of the current output flow of the foam pump. By changing the opening of the flow regulating pipeline 25, the reflux flow of the flow regulating pipeline 25 can be changed, thereby realizing precise adjustment of the foam flow delivered by the foam pump to the fire water supply system 2 within a small range.

[0068] like Figures 1 to 4 As shown, in another embodiment of the present invention, the water supply system S1 includes a water supply unit 11, a water pump unit 12 and a spray unit 13 connected in sequence, and the foam supply system S2 may also include an output control unit 23, the output control unit 23 is provided with a first output port P1 and a second output port P2, the first output port P1 is connected to the inlet pipe of the water pump unit 12, and the second output port P2 is connected to the outlet pipe of the water pump unit 12.

[0069] For this type of system assembly, confirming that the pipeline between the pump foam unit 22 and the water supply system S1 is connected specifically includes:

[0070] When the water pump unit 12 is in working state, it is confirmed that the first output port P1 of the output control unit 23 is opened and the second output port P2 is closed. When the water pump unit 12 is in non-working state, it is confirmed that the second output port P2 of the pump foam unit 22 is opened and the first output port P1 is closed.

[0071] like Figure 2 and Figure 4As shown, when the water pump unit 12 is in operation, the controller controls the output control unit 23 to switch the state so that the inlet of the output control unit 23 is connected to the first output port P1. After the inlet of the output control unit 23 is connected to the first output port P1, the foam pumped out by the pump foam unit 22 will sequentially pass through the inlet of the output control unit 23, the first output port and flow to the inlet pipeline of the water pump unit 12. Since the water pump unit 12 is in operation, the water pump unit 12 will actively suck the liquid at the inlet when it is running, so that the pump foam unit 22 only needs to provide a small pumping pressure to mix the foam with water.

[0072] like Figure 1 and Figure 3 As shown, when the water pump unit 12 is in the shutdown state, the controller controls the output control unit 23 to switch the state so that the inlet of the output control unit 23 is connected with the second output port P2. After the inlet of the output control unit 23 is connected with the second output port P2, the foam pumped out by the pump foam unit 22 will flow to the outlet pipeline of the water pump unit 12 through the inlet of the output control unit 23 and the second output port in sequence, thereby achieving smooth output of the foam.

[0073] The controller in the fire protection system assembly controls the switching state of the output control unit 23 according to the operation status of the water pump unit 12. When the water pump unit 12 is in operation, the inlet of the output control unit 23 is controlled to be connected with the first output port P1. When the water pump unit 12 is in shutdown, the inlet of the output control unit 23 is controlled to be connected with the second output port P2, so that the foam supply system S2 is freed from dependence on the operation of the water pump unit 12 and the application scope and usage scenarios of the system assembly are increased.

[0074] In the embodiment of the present invention, the output control unit 23 may be an electromagnetic reversing valve, a hydraulically controlled pilot reversing valve, or the like.

[0075] like Figure 1 As shown, in an embodiment of the present invention, the water supply system S1 includes a direct water supply unit 14, and the direct water supply unit 14 includes a direct water supply pipeline 141. One end of the direct water supply pipeline 141 is used to connect to an external water supply source, and the other end is connected to the outlet pipeline of the pump unit 12. When the pump unit 12 is in a non-working state, the controller also needs to confirm that the direct water supply unit 14 is in a working state. When the pump unit 12 is in a shutdown state, the foam pumped out by the pump foam unit 22 flows directly to the outlet pipeline of the pump unit 12, and is mixed with the water of the direct water supply pipeline 141 and sprayed from the spray unit 13. By setting up the direct water supply unit 14, the dependence on the pump unit 12 can be completely eliminated, so that the emergency operation of the system assembly can be achieved when the pump unit 12 fails.

[0076] like Figure 6 and Figure 7As shown, in the embodiment of the present invention, the foam supply system S2 further includes a foam external supply pipeline 26, on which an external supply control valve 261 for controlling on and off is provided, one end of the foam external supply pipeline 26 is connected to the outlet pipeline of the pump foam unit 22, and the other end is connected to the outside, and the foam output instruction further includes a foam external output instruction for opening and closing the external supply control valve 261;

[0077] After responding to the foam external supply instruction, the controller is further configured to:

[0078] The external supply control valve 261 is controlled to open.

[0079] By controlling the external supply control valve 261 to open, the foam can be output to the outside alone, and by the cooperation of the foam external supply pipeline 26, the first foam pipeline 211, and the second foam pipeline 212, multiple fire fighting equipment can be connected in series. When the foam is being output, the controller can control the output flow of the control pump foam unit 22 and the opening of the flow control valve 251 according to the foam flow demand. The flow regulation process can be as follows: Fig.12 The flowchart is shown in FIG.

[0080] like Figure 3 and Figure 4 As shown, in an embodiment of the present invention, the foam supply unit 21 includes a foam storage tank 211a and a first foam pipeline 211, one end of the first foam pipeline 211 is connected to the foam storage tank 211a, and the other end is connected to the inlet pipeline of the pump foam unit 22, and the first foam pipeline 211 is provided with a tank supply control valve 211b for controlling the on-off, and the tank supply control valve 211b is connected to the controller for control, and the controller is used to control the tank supply control valve 211b to open after receiving the tank foam supply signal.

[0081] Specifically, the tank supply control valve 211b is connected to the controller, and after receiving the tank supply foam signal, the controller is configured to:

[0082] in response to a tank supply foam signal;

[0083] The tank supply control valve 211b is controlled to open according to the tank supply foam signal.

[0084] The foam tank 211a may be built into a fire truck or fire equipment. Foam liquid is stored in the foam tank 211a. The foam tank 211a can supply foam to the pump foam unit 22 by opening the tank supply control valve 211b.

[0085] like Figure 3 and Figure 4 As shown, in the embodiment of the present invention, a one-way check valve 31 is further provided on the first foam pipeline 211. The one-way check valve 31 can prevent the foam liquid in the foam storage tank 211a from being polluted by the backflow of external foam or flushing water.

[0086] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the foam supply unit 21 also includes a second foam pipeline 212, one end of the second foam pipeline 212 is connected to the outside, and the other end is connected to the inlet pipeline of the pump foam unit 22, and the second foam pipeline 212 is provided with an external suction control valve 212a for controlling the on-off, and the external suction control valve 212a is connected to the controller for control, and the controller is used to control the external suction control valve 212a to open after receiving the external foam supply signal, and control the tank supply control valve 211b to remain closed.

[0087] Specifically, the external suction control valve 212a is connected to the controller, and after receiving the external foam supply signal, the controller is further configured to:

[0088] responding to an externally supplied foam signal;

[0089] The external suction control valve 212a is controlled to open according to the external foam supply signal, and the tank supply control valve 211b is controlled to remain closed.

[0090] By controlling the external suction control valve 212a to open, the external foam source can supply foam to the pump foam unit 22 in the fire truck.

[0091] The fire fighting system assembly of the present invention has two working modes: tank supply-output foam and external suction-output foam. Figure 3 and Figure 4 As shown, when the fire fighting system assembly is in the tank supply-output foam working mode, the controller will control the tank supply control valve 211b to open and the external suction control valve 212a to close. At this time, the foam liquid in the foam storage tank 211a passes through the first foam pipeline 211, the pump foam unit 22 and the output control unit 23 in sequence, and finally sprayed out from the spray unit 13.

[0092] like Figure 1 and Figure 2 As shown, when the fire fighting system assembly is in the external suction-output foam working mode, the controller will close the tank supply control valve 211b and open the external suction control valve 212a, and the foam liquid from the external foam source will pass through the second foam pipeline 212, the pump foam unit 22 and the output control unit 23 in sequence, and finally be sprayed out from the spray unit 13. By setting the first foam pipeline 211 and the second foam pipeline 212, multi-channel supply of foam can be achieved.

[0093] It is understandable that when an external foam source supplies foam to the pump foam unit 22 in a fire truck, the tank supply control valve 211b needs to be controlled to remain closed, and when the foam storage tank 211a supplies foam to the pump foam unit 22, the external suction control valve 212a needs to be controlled to remain closed to avoid cross-circuiting of foam between the two routes.

[0094] like Figure 1 As shown, in the embodiment of the present invention, a circulation pipe 28 is provided between the pump foam unit 22 and the foam supply unit 21. The circulation pipe 28 can be used as a transfer station for foam storage. Under different working conditions, excess foam can be temporarily stored and circulated in the circulation pipe 28. The circulation pipe 28 is provided with a plurality of connection ports to facilitate communication with various pipelines.

[0095] like Figure 5 As shown, in the embodiment of the present invention, the foam supply system S2 further includes a pumping foam pipeline 24, on which a pumping control valve 241 for controlling on and off is provided, one end of the pumping foam pipeline 24 is connected to the foam storage tank 211a, and the other end is connected to the outlet pipeline of the pump foam unit 22, and the pumping control valve 241 is connected to the controller for control, and the controller is used to control the pumping control valve 241 and the external suction control valve 212a to open after receiving the foam filling signal, and control the tank supply control valve 211b and the flow control valve 251 to remain closed. That is, the controller is configured as follows:

[0096] in response to a foam filling signal;

[0097] According to the foam filling signal, the pump injection control valve 241 and the external suction control valve 212a are controlled to open, and the tank supply control valve 211b is controlled to remain closed.

[0098] When the foam supply system S2 outputs foam to the outside, the pump control valve 241 is in a cut-off state. When the foam liquid in the foam storage tank 211a is insufficient, the second foam pipeline 212 can be connected to the external foam source, and the pump control valve 241 can be controlled to be turned on, and the output control unit 23 can be controlled to be turned off. The external foam flows into the foam storage tank 211a through the second foam pipeline 212, the pump foam unit 22, and the pump foam pipeline 24, thereby filling the foam storage tank 211a with foam.

[0099] It is understandable that after the controller controls the corresponding valve action according to the corresponding signal, it also needs to control the pump foam unit 22 to operate.

[0100] like Figure 8 As shown, in an embodiment of the present invention, the fire protection system assembly also includes a foam flushing pipeline 27, one end of the foam flushing pipeline 27 is connected to the water supply unit 11, and the other end is connected to the inlet pipeline of the pump foam unit 22. The foam flushing pipeline 27 is provided with a foam flushing valve 271 for controlling the on-off, and the foam flushing valve 271 is connected to the controller for controlling the foam flushing valve 271 to open after receiving the foam pipeline flushing signal.

[0101] When the bubble supply system is outputting foam or pumping foam to the outside, the foam flushing valve 271 is in a cut-off state to prevent foam from entering the foam flushing pipeline 27. When the bubble supply system is finished working, foam liquid will remain in the pipeline of the bubble supply system. By controlling the foam flushing valve 271 to open and controlling the pump foam unit 22 to operate, the remaining foam liquid in the pipeline of the bubble supply system can be flushed in time to prevent the foam liquid from corroding the pipeline.

[0102] like Figure 8 As shown, in the embodiment of the present invention, the foam supply system S2 further includes a discharge pipeline 29, one end of which is connected to the outlet pipeline of the pump foam unit 22, and the other end is connected to the outside. The discharge pipeline 29 is provided with a discharge control valve 291 for controlling the on-off, and the discharge control valve 291 is control-connected to the controller, and the controller is also used to control the discharge control valve 291 to open according to the foam pipeline flushing signal. By providing the discharge pipeline 29, the water used to flush the pipeline of the foam supply system can be discharged.

[0103] like Figure 1 As shown, in the embodiment of the present invention, the foam supply system S2 further includes a safety pressure relief pipeline, one end of which is connected to the outlet of the pump foam unit 22, and a pressure relief valve 32 is provided on the safety pressure relief pipeline. The pressure relief valve 32 is used to open when the outlet liquid pressure of the pump foam unit 22 reaches a preset value. By providing the safety pressure relief pipeline, the safe working pressure of the foam supply system S2 can be guaranteed.

[0104] In summary, the foam supply system S2 of the present invention has at least six working modes, namely external suction-output foam, tank supply-output foam, external suction-pumping foam, external suction-external supply foam, tank supply-external supply foam, and flushing. Among them, external suction-output foam and tank supply-output foam belong to the foam internal delivery mode, and external suction-external supply foam and tank supply-external supply foam belong to the foam external delivery mode.

[0105] like Figure 1 and Figure 2 As shown, when the foam supply system S2 is in the working mode of external suction-outputting foam, the external suction control valve 212a is opened, the pipeline between the pump foam unit 22 and the water supply system S1 is connected, and the pump foam unit 22 is running. The foam from the outside is output to the water supply system S1 through the second foam pipeline 212 and the pump foam unit 22 in sequence. If the foam supply system S2 is also provided with an output control unit 23, when the pump water unit 12 is in the working state, the first output port P1 is controlled to output, and when the pump water unit 12 is in the shutdown state, the second output port P2 is controlled to output. During the output process, the controller will adjust the foam output flow rate.

[0106] like Figure 3 and Figure 4As shown, when the foam supply system S2 is in the tank supply-output foam working mode, the tank supply control valve 211b is opened, the external suction control valve 212a is closed, the pipeline between the pump foam unit 22 and the water supply system S1 is connected, and the pump foam unit 22 is running. The foam in the foam storage tank 211a is output through the first foam pipeline 211 and the pump foam unit 22 in sequence. For the setting of protection conditions, when the pump foam unit 22 is started, or when the pump foam unit 22 has been running for a period of time, if it is detected that the liquid level of the foam storage tank 211a is lower than the preset value, the pump foam unit 22 needs to be controlled to be closed, and the personnel need to be reminded to add foam liquid into the foam storage tank 211a to avoid the pump foam unit 22 from idling for a long time.

[0107] like Figure 5 As shown, when the foam supply system S2 is in the external suction-pumping foam working mode, the external suction control valve 212a and the pumping control valve 241 are opened, and other pipelines are closed. After the pump foam unit 22 is running, the external foam enters the foam storage tank 211a through the second foam pipeline 212, the pump foam unit 22, and the pumping foam pipeline 24 in sequence, thereby filling the foam storage tank 211a with foam liquid. When the liquid level of the foam storage tank 211a is higher than a certain set value, it means that the foam storage tank 211a is completely filled with foam, and at this time, the pump foam unit 22 can be controlled to stop running.

[0108] like Figure 6 As shown, when the foam supply system S2 is in the working mode of external suction and external foam supply, the valve of the corresponding pipeline is controlled to open, so that the external foam can be output through the second foam pipeline 212, the pump foam unit 22, and the foam external supply pipeline 26 in sequence. In this mode, multiple sets of foam supply systems S2 can be connected in series.

[0109] like Figure 7 and Fig.12 As shown, when the foam supply system S2 is in the tank supply-external foam supply working mode, the valve of the corresponding pipeline is controlled to open, so that the foam in the foam storage tank 211a can be output in sequence through the first foam pipeline 211, the pump foam unit 22, and the foam external supply pipeline 26. In this mode, multiple foam supply systems S2 can be connected in series, or the foam supply system S2 and external fire-fighting equipment can be connected in series.

[0110] like Figure 8As shown, when the foam supply system S2 is in the flushing working mode, the valve of the corresponding pipeline is controlled to open, so that the pump foam unit 22 can suck water from the water tank 111 or the outside through the foam flushing pipeline 27, and then flush the pipeline of the foam supply system S2, and the flushed liquid can be discharged through the discharge pipeline 29. In this mode, the pump foam unit 22 can operate at a default speed. In the water tank 111 water supply mode, if the water tank 111 is insufficient, it is necessary to control the foam pump to stop, so as to avoid the pump foam unit 22 from idling for a long time.

[0111] It can be understood that when the system enters one of the above-mentioned working modes, the corresponding valves among the tank supply control valve 211b, the external suction control valve 212a, the pump control valve 241, the foam flushing valve 271 and the liquid discharge control valve 291 will be controlled to open, and the other valves will be controlled to remain closed.

[0112] like Figure 1 As shown, in the embodiment of the present invention, the current final output flow rate of the pump foam unit 22 can be detected by arranging a flow meter at a corresponding position.

[0113] In an embodiment of the present invention, after the pump foam unit 22 has been running for a period of time, if it is detected that the pump foam unit 22 has no flow output for a continuous period of time, the pump foam unit 22 can be controlled to shut down to avoid the pump foam unit 22 from idling for a long time.

[0114] In the embodiment of the present invention, when the output unit selects the first output port P1 for output, if the water pump unit 12 is shut down, the pump foam unit 22 needs to be controlled to shut down as well to prevent the foam from contaminating the water source.

[0115] like Figure 1 As shown, in an embodiment of the present invention, the water supply unit 11 includes a water tank 111, which is used to store clean water. A first water supply pipeline 112 is provided between the water tank 111 and the inlet of the water pump unit 12. The first water supply pipeline 112 is provided with a tank water supply valve 112a for controlling the on-off. By controlling the conduction of the tank water supply valve 112a, the water tank 111 can supply water to the water pump unit 12.

[0116] like Figure 1 As shown, in the embodiment of the present invention, the water supply unit 11 further includes a second water supply pipeline 113, one end of which is connected to the outside, and the other end is connected to the inlet pipeline of the water pump unit 12. The second water supply pipeline 113 is used to supply water from the outside to the inlet of the water pump unit 12, and the second water supply pipeline 113 may also be provided with an external water supply valve 113a for controlling the on-off.

[0117] Through the first water supply pipeline 112 and the second water supply pipeline 113 , water can be taken from the outside of the pump unit 12 and from the water tank 111 .

[0118] like Figure 8 As shown, in the embodiment of the present invention, one end of the foam flushing pipeline 27 can be connected to the water tank 111 through a pipeline, and an external water injection port can be provided on the foam flushing pipeline 27. That is, the water source of the foam flushing pipeline 27 can come from the water tank 111 or the outside.

[0119] like Figure 1 As shown, in an embodiment of the present invention, the pump unit 12 may be provided with two output water paths, one of which is connected to the spray unit 13, and the other is connected to the water tank 111. The water tank 111 may be filled with water through the output water path connected between the water tank 111 and the pump unit 12.

[0120] like Figure 1 As shown, in an embodiment of the present invention, the spray unit 13 may include a fire gun 131 and a fire monitor 132 .

[0121] In the embodiment of the present invention, the pump foam unit 22 may be a gear pump, the water pump unit 12 may be a water pump, and the power of the pump foam unit 22 may be taken from a hydraulic pipeline system or a motor on the fire-fighting equipment.

[0122] In the embodiment of the present invention, the source of each mode switching signal can be selected by manual key pressing, and by setting a controller, one-key operation of mode switching can be realized.

[0123] like Fig.10 As shown, in an embodiment of the present invention, the controller can be connected to the flow meter, pressure gauge, electric control switch of each valve, pump foam unit 22, and water pump unit 12 on each pipeline. The controller can obtain the status of the flow meter, pressure gauge, electric control switch of each valve, pump foam unit 22, and water pump unit 12 on each pipeline, and can control each valve, pump foam unit 22, and water pump unit 12.

[0124] In summary, when the fire-fighting system assembly of the present invention outputs foam, by switching the state of the output control unit 23 according to the operating state of the water-pumping unit 12, it not only gets rid of the dependence on the operation of the water-pumping unit 12, but also can realize the independent output of foam and the output in conjunction with the water-pumping unit 12. At the same time, when used in conjunction with the water-pumping unit 12, the working pressure required by the pump foam unit 22 is also relatively small. The fire-fighting system assembly of the present invention has a variety of working modes. In each working mode, it can realize precise control of the foam flow output, and in the working mode of external foam supply, it can very conveniently provide foam to other fire-fighting vehicles or fire-fighting equipment, realizing linkage with other fire-fighting vehicles or fire-fighting equipment. The various valves in the fire-fighting system assembly of the present invention can be controlled by a controller, and the one-button mode automatic switching of the system assembly can be realized, which greatly simplifies the operation process.

[0125] To achieve the above object, the present invention further provides a fire fighting device, wherein the fire fighting device can be a fire fighting truck, and the fire fighting device has the fire fighting system assembly described above. Since the fire fighting device adopts all the technical solutions of the above embodiments, it at least has the beneficial effects brought by the above embodiments, which will not be repeated here.

[0126] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0127] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0128] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0129] Although the embodiments of the present invention have been described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A fire protection system assembly, characterized in that: The fire protection system assembly comprises: A foam supply system (S2), comprising a foam supply unit (21), a pump foam unit (22) and a flow regulating pipeline (25) connected in sequence, one end of the flow regulating pipeline (25) being connected to the outlet of the pump foam unit (22), the flow regulating pipeline (25) being used to divert the foam pumped out by the pump foam unit (22), and a flow regulating valve (251) with an adjustable opening is provided on the flow regulating pipeline (25); and A controller is used to control the output flow rate of the pump foam unit (22) and the opening degree of the flow regulating valve (251) when the foam is output externally.

2. The fire fighting system assembly according to claim 1, characterized in that: The external output of foam is controlled by a foam output instruction. After receiving the foam output instruction, the controller is configured to: in response to a foam output instruction; Controlling the operation of the pump foam unit (22) according to the foam output instruction; Controlling the pump foam unit (22) to change the output flow rate until the difference between the theoretical output flow rate of the pump foam unit (22) and the actual required flow rate of the foam is positive and less than a first preset value; The flow regulating valve (251) is controlled to increase or decrease its opening until the difference between the final output flow of the foam supply system (S2) and the actual required flow is less than a second preset value.

3. The fire fighting system assembly according to claim 2, characterized in that: The fire fighting system assembly further comprises a water supply system (S1), the outlet pipeline of the pump foam unit (22) is connected to the water supply system (S1), the foam output instruction comprises a foam internal delivery instruction, and before responding to the foam internal delivery instruction, the controller is further configured to: Confirm that the water supply system (S1) is in working condition, and confirm that the pipeline between the pump foam unit (22) and the water supply system (S1) is connected.

4. The fire fighting system assembly according to claim 3, characterized in that: The water supply system (S1) comprises a water supply unit (11), a water pump unit (12) and a spray unit (13) connected in sequence, the outlet of the pump foam unit (22) is connected to the outlet pipeline of the water pump unit (12), and confirming that the pipeline between the pump foam unit (22) and the water supply system (S1) is connected specifically includes: Confirm that the pipeline between the outlet of the pump foam unit (22) and the outlet of the pump water unit (12) is connected.

5. The fire fighting system assembly according to claim 3, characterized in that: The water supply system (S1) comprises a water supply unit (11), a water pump unit (12) and a spray unit (13) connected in sequence, and the foam supply system (S2) further comprises an output control unit (23) connected to the outlet pipeline of the pump foam unit (22), the output control unit (23) being provided with a first output port (P1) and a second output port (P2), the first output port (P1) being connected to the inlet pipeline of the water pump unit (12), and the second output port (P2) being connected to the outlet pipeline of the water pump unit (12), and confirming that the pipeline between the pump foam unit (22) and the water supply system (S1) is connected specifically comprises: When the water pump unit (12) is in a working state, it is confirmed that the first output port (P1) of the output control unit (23) is open and the second output port (P2) is closed; when the water pump unit (12) is in a non-working state, it is confirmed that the second output port (P2) of the pump foam unit (22) is open and the first output port (P1) is open.

6. The fire fighting system assembly according to claim 5, characterized in that: The water supply system (S1) comprises a direct water supply unit (14), and the direct water supply unit (14) comprises a direct water supply pipeline (141), one end of the direct water supply pipeline (141) is used to be connected to an external water supply source, and the other end is connected to the outlet pipeline of the water pump unit (12). When the water pump unit (12) is in a non-working state, the controller also needs to confirm that the direct water supply unit (14) is in a working state.

7. The fire fighting system assembly according to claim 2, characterized in that: The foam supply system (S2) further comprises a foam external supply pipeline (26), on which an external supply control valve (261) for controlling on and off is provided, one end of the foam external supply pipeline (26) is connected to the outlet pipeline of the pump foam unit (22), and the other end is connected to the outside, and the foam output instruction further comprises a foam external output instruction for opening and closing the external supply control valve (261); After responding to the foam external supply instruction, the controller is further configured to: The external supply control valve (261) is controlled to open.

8. The fire fighting system assembly according to any one of claims 1 to 7, characterized in that: The foam supply unit (21) comprises a foam storage tank (211a) and a first foam pipeline (211); one end of the first foam pipeline (211) is connected to the foam storage tank (211a), and the other end is connected to the inlet pipeline of the pump foam unit (22); a tank supply control valve (211b) for controlling on and off is provided on the first foam pipeline (211); the tank supply control valve (211b) is control-connected to the controller; the controller is used to control the tank supply control valve (211b) to open after receiving a tank foam supply signal.

9. The fire fighting system assembly according to claim 8, characterized in that: The foam supply unit (21) further comprises a second foam pipeline (212), one end of the second foam pipeline (212) being connected to the outside, and the other end being in communication with an inlet pipeline of the pump foam unit (22), and the second foam pipeline (212) being provided with an external suction control valve (212a) for controlling on and off, and the external suction control valve (212a) being control-connected to the controller, and the controller being used to control the external suction control valve (212a) to open after receiving an external foam supply signal, and to control the tank supply control valve (211b) to remain closed.

10. The fire fighting system assembly according to claim 9, characterized in that: The foam supply system (S2) further comprises a pumping foam pipeline (24), on which a pumping control valve (241) for controlling on and off is provided, one end of the pumping foam pipeline (24) is connected to the foam storage tank (211a), and the other end is connected to the outlet pipeline of the pump foam unit (22), the pumping control valve (241) is connected to the controller for control, and the controller is used to control the pumping control valve (241) and the external suction control valve (212a) to open after receiving a foam filling signal, and control the tank supply control valve (211b) and the flow regulating valve (251) to remain closed.

11. The fire fighting system assembly according to any one of claims 1 to 7, characterized in that: The fire protection system assembly further comprises a foam flushing pipeline (27), one end of which is connected to a water supply source, and the other end of which is in communication with an inlet pipeline of the pump foam unit (22). A foam flushing valve (271) for controlling on and off is provided on the foam flushing pipeline (27), and the foam flushing valve (271) is controllably connected to the controller, and the controller is used to control the foam flushing valve (271) to open after receiving a foam pipeline flushing signal.

12. The fire fighting system assembly according to claim 11, characterized in that: The foam supply system (S2) further comprises a discharge pipeline (29), one end of which is connected to the outlet pipeline of the pump foam unit (22), and the other end of which is connected to the outside. The discharge pipeline (29) is provided with a discharge control valve (291) for controlling on and off. The discharge control valve (291) is control-connected to the controller, and the controller is further used to control the opening of the discharge control valve (291) according to the foam pipeline flushing signal.

13. A fire fighting equipment, characterized in that: Comprising a fire fighting system assembly according to any one of claims 1 to 12.

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