Fire system assembly and fire equipment

Abstract

This invention belongs to the field of fire protection equipment technology and provides a fire protection system assembly and fire protection equipment. The fire protection system assembly includes a foam supply system and a controller. The foam supply system includes a foam supply unit, a foam pump unit, and a flow regulating pipeline connected in sequence. One end of the flow regulating pipeline is connected to the outlet of the foam pump unit. The flow regulating pipeline is used to divert the foam pumped by the foam pump unit. The flow regulating pipeline is equipped with a flow regulating valve with an adjustable opening. The controller is used to control the output flow rate of the foam pump unit and the opening of the flow regulating valve when the foam is output. By first directly controlling the output flow rate of the foam pump unit to achieve coarse adjustment of the foam flow rate, and then changing the opening of the flow regulating valve to achieve fine adjustment of the foam flow rate, the final output flow rate of the foam can be accurately adjusted to the target value in a short time.

Description

Technical Field

[0001] This invention belongs to the field of fire protection equipment technology, specifically relating to a fire protection system assembly and fire protection equipment. Background Technology

[0002] Existing foam supply methods in fire truck fire suppression systems mainly include negative pressure suction and positive pressure injection. Negative pressure suction relies on a high-speed water flow through a venturi tube, creating negative pressure that draws in foam and mixes it with the water. However, the magnitude of this negative pressure cannot be controlled, making precise foam flow control impossible. Positive pressure injection uses a foam pump to force foam towards the pump's inlet or outlet. However, due to the low accuracy of foam pump flow control, slow response time, and hysteresis in hydraulic control, precise foam flow supply is also not achievable. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies, the present invention provides a fire protection system assembly and fire protection equipment, which aims to solve the technical problem that existing fire protection systems cannot achieve precise foam flow supply.

[0004] To achieve the above objectives, 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 foam pump unit, and a flow regulating pipeline connected in sequence. One end of the flow regulating pipeline is connected to the outlet of the foam pump unit. The flow regulating pipeline is used to divert the foam pumped out by the foam pump unit. The flow regulating pipeline is equipped with a flow regulating valve with an adjustable opening. The controller is used to control the output flow rate of the foam pump unit and the opening of the flow regulating valve when the foam is output.

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

[0006] Responding to the foam output command;

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

[0008] The pump foam unit is controlled to change its 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 the first preset value.

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

[0010] In an embodiment of the invention, the fire protection 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 command includes a foam delivery command for controlling the foam output from the pump foam unit to flow into the water supply system, and the controller is further configured to:

[0011] Confirm that the water supply system is in operation and that the piping between the pump foam unit and the water supply system is connected.

[0012] In an embodiment of the present invention, the water supply system includes a water supply unit, a water pumping unit, and a spraying unit connected in sequence. The outlet of the foam pumping unit is connected to the outlet pipeline of the water pumping unit. Confirming the pipeline connection between the foam pumping unit and the water supply system specifically includes:

[0013] Confirm that the piping between the outlet of the pump foam unit and the outlet of the pump water unit is connected.

[0014] In an embodiment of the present invention, the water supply system includes a water supply unit, a pumping unit, and a spraying unit connected in sequence. The foam supply system further includes an output control unit, which has a first output port and a second output port. The first output port is connected to the inlet pipe of the pumping unit, and the second output port is connected to the outlet pipe of the pumping unit. Confirming the pipe connection between the foam pumping unit and the water supply system specifically includes:

[0015] When the pump unit is in operation, confirm that the first output port of the output control unit is open and the second output port is closed. When the pump unit is not in operation, confirm that the second output port of the pump foam unit is open 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 connected to an external water source, and the other end is connected to the outlet pipeline of the pumping unit. When the pumping 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 includes an external foam supply pipeline, which is provided with an external supply control valve for controlling the on / off state. One end of the external foam supply pipeline is connected to the outlet pipeline of the pump foam unit, and the other end is connected to the outside. The foam output command also includes a foam output command for opening and closing the external supply control valve.

[0018] The controller is also 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 state. The tank supply control valve is connected to a controller, which controls 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 further includes a second foam pipeline. One end of the second foam pipeline is connected to the outside, 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. The external suction control valve is connected to a controller. The controller is used to control the external suction control valve to open after receiving an external foam supply signal, and to control the tank supply control valve to remain closed.

[0022] In an embodiment of the present invention, the foam supply system further includes a foam pumping pipeline, which is provided with a pumping control valve for controlling the on / off state. One end of the foam pumping pipeline is connected to a foam storage tank, and the other end is connected to the outlet pipeline of the foam pumping unit. The pumping control valve is connected to a controller, which controls the pumping control valve and the external suction control valve to open after receiving a foam filling signal, and controls 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 further 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. The foam flushing pipeline is provided with a foam flushing valve for controlling its on / off state. The foam flushing valve is connected to a controller, which controls the foam flushing valve to open after receiving a foam pipeline flushing signal.

[0024] In an embodiment of the present invention, the foam supply system further 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. The discharge pipeline is provided with a discharge control valve for controlling the on / off state. The discharge control valve is connected to a controller, and the controller is also used to control the discharge control valve to open according to the foam pipeline flushing signal.

[0025] To achieve the above objectives, the present invention also provides a fire-fighting device, wherein the fire-fighting device includes the fire-fighting system assembly described above.

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

[0027] This fire protection system assembly achieves coarse adjustment of foam flow by first directly controlling the output flow of the pump foam unit, and then fine adjustment of foam flow by changing the opening of the flow regulating valve. Thus, the final external output flow of foam can be accurately adjusted to the target value in a short time.

[0028] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0029] The accompanying drawings are provided to illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the direction of foam when the fire protection system assembly with output control unit is in external suction-output foam working mode according to an embodiment of the present invention and when the pump unit stops.

[0031] Figure 2 This is a schematic diagram of the direction of foam when the fire protection system assembly with output control unit is in the external suction-output foam working mode according to an embodiment of the present invention and when the pump unit is running.

[0032] Figure 3 This is a schematic diagram of the direction of foam when the fire protection system assembly with output control unit is in tank supply-output foam working mode and the pump unit is stopped, according to an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the direction of foam when the fire protection system assembly with output control unit is in tank supply-output foam working mode and the pump unit is running, according to an embodiment of the present invention.

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

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

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

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

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

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

[0040] Figure 11 This is an operation flowchart of the fire protection system assembly in the foam internal delivery mode according to an embodiment of the present invention;

[0041] Figure 12 This is an operational flowchart of the fire protection system assembly in the tank-supply-external foam working mode according to an embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures

[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, Pumping unit; 13, Spraying unit; 131, Fire nozzle; 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 pipeline; Foam piping; 212a, external suction control valve; 22, foam pump unit; 23, output control unit; P1, first output port; P2, second output port; 24, foam injection piping; 241, injection control valve; 25, flow regulation piping; 251, flow regulation valve; 26, external foam supply piping; 261, external supply control valve; 27, foam flushing piping; 271, foam flushing valve; 28, circulation pipe; 29, drain piping; 291, drain control valve; 31, one-way check valve; 32, pressure relief valve. Detailed Implementation

[0044] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

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

[0046] This invention provides a fire protection 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 foam pumping 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 foam pumping unit 22. The flow regulating pipeline 25 is used to divert the foam pumped out by the foam pumping unit 22. The flow regulating pipeline 25 is equipped 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 foam pump unit 22 is typically a foam pump. The pump's rotational speed and output flow rate are directly proportional. By changing the pump's rotational speed, the controller can significantly alter the output flow rate of the foam pump unit 22, quickly adjusting it to closely match the actual required flow rate. However, this method has low adjustment precision, only roughly adjusting the output flow rate to approximate the actual required flow rate. This fire protection system assembly, by installing a flow regulation pipe 25 and controlling its opening via a controller, allows for fine-tuning of the flow regulation pipe 25's branch flow rate after the foam pump unit 22's output flow rate approaches the actual required flow rate. By changing the branch flow rate of the flow regulation pipe 25, the system can influence the foam pump unit 22's output flow rate, thus achieving precise adjustment of its final output flow rate.

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

[0051] In an embodiment of the invention, the other end of the flow regulating pipe 25 may be connected to the 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 command. After receiving the foam output command, the controller is specifically configured as follows:

[0053] Responding to the foam output command;

[0054] The operation of the pump foam unit 22 is controlled according to the foam output command;

[0055] The pump foam unit 22 is controlled 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 the 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 system S2 and the actual required flow is less than the second preset value.

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

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

[0059] In embodiments of the present invention, foam output includes internal foam output and external foam output. Internal foam output refers to the mixing of foam in the foam supply system S2 with fire-fighting water in the water supply system S1, followed by spraying from the outlet of the water supply system S1. The foam output follows the piping of the internal water supply system S1 of the fire-fighting equipment. External foam output refers to the foam in the foam supply system S2 flowing directly to the outside through the external foam supply pipe 26. Both output modes allow for precise adjustment of the foam output flow rate via a controller.

[0060] In an embodiment of the present invention, the fire protection 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, and the foam output command includes a foam internal delivery command for controlling the foam output by the pump foam unit 22 to flow to the water supply system S1. Before responding to the foam internal delivery command, the controller is further configured to:

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

[0062] like Figure 11 As shown, after receiving the foam input command, the controller needs to confirm whether the start-up conditions of the foam supply system S2 have been met. To avoid waste caused by foam being sprayed solely from the water supply system S1, the start-up conditions can be set to the water supply system S1 being in a working state, and the pipeline between the pump foam unit 22 and the water supply system S1 being connected. Confirming that the water supply system S1 is in a working state means that water is being sprayed from the water supply system S1.

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

[0064] Confirm that the pipeline between the outlet of the foam pump unit 22 and the outlet of the water pump unit 12 is connected.

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

[0066] Taking the foam pump unit 22 as an example, such as Figure 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 from the foam pump unit 22 to the fire water supply system 2. Changing the foam pump speed will significantly alter the foam pump's output flow rate. This adjustment method, which changes the foam pump's output flow rate by adjusting the speed, can quickly adjust the foam pump's output flow rate to be close to the actual required flow rate. However, this method has low adjustment precision and can only roughly adjust the foam pump's output flow rate (actual speed) to be close to the actual required flow rate (theoretical speed). For example, if the actual required flow rate of the foam is 80 L / min, by adjusting the foam pump's speed, its output flow rate can only be guaranteed to be within the range of (80 ± 80 * 3%) L / min.

[0067] After adjusting the theoretical output flow rate of the foam pump to be slightly higher than the actual required flow rate, in order to further adjust the foam output flow rate of the foam pump, the excess foam output by the foam pump can be returned using the flow regulating pipe 25. The maximum return flow rate of the flow regulating pipe 25 is much smaller than the output flow rate of the foam pump; for example, the maximum return flow rate of the flow regulating pipe 25 can be 10% or lower than the current output flow rate of the foam pump. By changing the opening degree of the flow regulating pipe 25, the return flow rate of the flow regulating pipe 25 can be changed, thereby achieving precise adjustment of the foam flow rate supplied 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 pumping unit 12 and a spraying unit 13 connected in sequence. 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 pumping unit 12, and the second output port P2 is connected to the outlet pipe of the water pumping unit 12.

[0069] For this type of system assembly, confirming the piping connection between the pump foam unit 22 and the water supply system S1 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 open 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 open 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 states, connecting the inlet of the output control unit 23 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 by the foam pump unit 22 will sequentially pass through the inlet of the output control unit 23, the first output port, and flow to the inlet pipe of the water pump unit 12. Since the water pump unit 12 is in operation, it actively draws in the liquid at the inlet, so the foam pump unit 22 only needs to provide a small pumping pressure to mix the foam with the water.

[0072] like Figure 1 and Figure 3 As shown, when the pumping unit 12 is in a stopped state, the controller controls the output control unit 23 to switch states, so that the inlet of the output control unit 23 is connected to the second output port P2. After the inlet of the output control unit 23 is connected to the second output port P2, the foam pumped out by the foam pumping unit 22 will flow through the inlet of the output control unit 23 and the second output port to the outlet pipeline of the pumping unit 12, so as to achieve smooth foam output.

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

[0074] In embodiments of the present invention, the output control unit 23 may be an electromagnetic directional valve, a hydraulic pilot directional valve, etc.

[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, which includes a direct water supply pipeline 141. One end of the direct water supply pipeline 141 is connected to an external water source, and the other end is connected to the outlet pipeline of the pump unit 12. When the pump unit 12 is not in operation, the controller also needs to confirm that the direct water supply unit 14 is in operation. When the pump unit 12 is in a stopped state, the foam pumped by the foam pump unit 22 flows directly to the outlet pipeline of the pump unit 12 and mixes with the water in the direct water supply pipeline 141 before being sprayed out 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, thereby enabling emergency operation of the system assembly even when the pump unit 12 fails.

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

[0077] The controller is also configured to:

[0078] Control the external supply control valve 261 to open.

[0079] By controlling the opening of the external supply control valve 261, foam can be output to the outside independently. Through the coordination of the external foam supply pipeline 26, the first foam pipeline 211, and the second foam pipeline 212, multiple fire-fighting devices can be connected in series. During foam output, the controller can control the output flow rate of the control pump foam unit 22 and the opening degree of the flow regulating valve 251 according to the foam flow rate requirement. The flow regulation process can be described as follows: Figure 12 The flowchart is shown.

[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. The first foam pipeline 211 is provided with a tank supply control valve 211b for controlling the on / off state. The tank supply control valve 211b is connected to a controller, which controls the tank supply control valve 211b to open after receiving a tank supply foam signal.

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

[0082] In response to the foam supply signal from the tank;

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

[0084] Foam storage tank 211a can be built into fire trucks or fire equipment. Foam storage tank 211a stores foam liquid. By opening the control valve 211b through the control tank, foam storage tank 211a can supply foam to pump foam unit 22.

[0085] like Figure 3 and Figure 4 As shown, in an embodiment of the present invention, a one-way check valve 31 is also 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 contaminated 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 further 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. The second foam pipeline 212 is provided with an external suction control valve 212a for controlling the on and off. The external suction control valve 212a is connected to a controller. The controller is 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.

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

[0088] Responding to externally supplied foam signals;

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

[0090] By controlling the opening of the external suction control valve 212a, foam can be supplied from an external foam source to the pump foam unit 22 inside the fire truck.

[0091] The fire protection system assembly of this invention has two operating modes: tank-supply-output foam and external suction-output foam. For example... Figure 3 and Figure 4 As shown, when the fire protection 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 is finally sprayed out from the spraying unit 13.

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

[0093] It is understandable that when an external foam source supplies foam to the pump foam unit 22 inside the fire truck, the control valve 211b of the control tank needs to be kept closed, while when the foam storage tank 211a supplies foam to the pump foam unit 22, the external suction control valve 212a needs to be kept closed to prevent cross-flow of foam between the two circuits.

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

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

[0096] In response to the foam filling signal;

[0097] The pump control valve 241 and the external suction control valve 212a are opened according to the foam filling signal, and the tank supply control valve 211b is kept closed.

[0098] When the foam supply system S2 is outputting foam, the pump injection control valve 241 is in the off state. When the foam liquid in the foam storage tank 211a is insufficient, the second foam pipeline 212 can be connected to an external foam source, and the pump injection control valve 241 can be opened, while the output control unit 23 can be closed. External foam flows into the foam storage tank 211a through the second foam pipeline 212, the foam pumping unit 22, and the foam injection pipeline 24, thereby filling the foam storage tank 211a with foam.

[0099] Understandably, after controlling the corresponding valve to operate according to the corresponding signal, the controller also needs to control the operation of the pump foam unit 22.

[0100] like Figure 8 As shown, in an embodiment of the present invention, the fire protection system assembly further 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 state. The foam flushing valve 271 is connected to a controller, which controls the foam flushing valve 271 to open after receiving a foam pipeline flushing signal.

[0101] When the foam supply system outputs or pumps foam, the foam flushing valve 271 is in the closed state to prevent foam from entering the foam flushing pipeline 27. After the foam supply system finishes working, foam liquid will remain in the pipeline. By controlling the foam flushing valve 271 to open and controlling the foam pump unit 22 to run, the remaining foam liquid in the pipeline of the foam supply system can be flushed in time to prevent the foam liquid from corroding the pipeline.

[0102] like Figure 8 As shown, in an embodiment of the present invention, the foam supply system S2 further includes a drain pipe 29. One end of the drain pipe 29 is connected to the outlet pipe of the pump foam unit 22, and the other end is connected to the outside. A drain control valve 291 for controlling the on / off state is provided on the drain pipe 29. The drain control valve 291 is connected to a controller, which is also used to control the drain control valve 291 to open according to the foam pipe flushing signal. By setting up the drain pipe 29, water used to flush the foam supply system can be discharged.

[0103] like Figure 1 As shown, in an embodiment of the present invention, the foam supply system S2 further includes a safety pressure relief pipeline. One end of the safety pressure relief pipeline 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 setting up the safety pressure relief pipeline, the safe operating 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 operating 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 rinsing. Among them, external suction-output foam and tank supply-output foam belong to the internal foam delivery mode, while external suction-external supply foam and tank supply-external supply foam belong to the external foam delivery mode.

[0105] like Figure 1 and Figure 2 As shown, when the foam supply system S2 is in the external suction-output foam working mode, the external suction control valve 212a opens, connecting the pipeline between the pump foam unit 22 and the water supply system S1, and the pump foam unit 22 operates. External foam sequentially passes through the second foam pipeline 212 and the pump foam unit 22 to output foam to the water supply system S1. If the foam supply system S2 is also equipped with an output control unit 23, then when the pump water unit 12 is in the working state, the first output port P1 is controlled to output; when the pump water unit 12 is in the stopped state, the second output port P2 is controlled to output. During the output process, the controller adjusts 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 open, 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 operates. The foam in the foam storage tank 211a is output sequentially through the first foam pipeline 211 and the pump foam unit 22. Regarding the protection settings, when the pump foam unit 22 starts, or after the pump foam unit 22 has been running for a period of time, if the liquid level in the foam storage tank 211a is detected to be lower than the preset value, the pump foam unit 22 needs to be shut down, and personnel need to be reminded to add foam liquid to the foam storage tank 211a to avoid the pump foam unit 22 running dry for a long time.

[0107] like Figure 5 As shown, when the foam supply system S2 is in the external suction-pumping foam operation mode, the external suction control valve 212a and the pumping control valve 241 are open, while other pipelines are closed. After the pump foam unit 22 starts operating, external foam sequentially passes through the second foam pipeline 212, the pump foam unit 22, and the pumping foam pipeline 24 into the foam storage tank 211a, thereby filling the foam storage tank 211a with foam liquid. When the liquid level in the foam storage tank 211a is higher than a certain set value, it indicates that the foam storage tank 211a has been filled with foam, at which point the pump foam unit 22 can be controlled to stop operating.

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

[0109] like Figure 7 and Figure 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 opened, so that the foam from the foam storage tank 211a can be output sequentially through the first foam pipeline 211, the pump foam unit 22, and the external foam 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 flushing mode, the valve of the corresponding pipeline is opened, allowing the pump foam unit 22 to draw 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. The flushed liquid can be discharged through the drain pipeline 29. In this mode, the pump foam unit 22 can operate at the default speed. In the water tank 111 supply mode, if the water volume in the water tank 111 is insufficient, the foam pump needs to be stopped to avoid the pump foam unit 22 running dry for a long time.

[0111] It is understandable that when the system enters one of the above working modes, it will control the corresponding valves in the tank supply control valve 211b, external suction control valve 212a, pump injection control valve 241, foam flushing valve 271 and discharge control valve 291 to open, and control the other valves to remain closed.

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

[0113] In an embodiment of the present invention, if the pump foam unit 22 is detected to have no flow output for a continuous period of time after the pump foam unit 22 has been running for a period of time, the pump foam unit 22 can be controlled to stop, so as to avoid the pump foam unit 22 running idle for a long time.

[0114] In an embodiment of the present invention, when the output selection unit selects the first output port P1 for output, if the water pump unit 12 stops, the foam pump unit 22 also needs to be stopped to avoid foam contamination of 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 for storing clean water. A first water supply pipeline 112 is provided between the water tank 111 and the inlet of the pumping unit 12. A tank water supply valve 112a for controlling the on / off state is provided on the first water supply pipeline 112. By controlling the opening and closing of the tank water supply valve 112a, water can be supplied from the water tank 111 to the pumping unit 12.

[0116] like Figure 1 As shown, in an 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 pumping unit 12. The second water supply pipeline 113 is used to supply water from the outside to the inlet of the pumping unit 12, and an external water supply valve 113a for controlling the on / off state may also be provided on the second water supply pipeline 113.

[0117] Water can be drawn from the outside of the pump unit 12 and water can be drawn from the water tank 111 through the first water supply pipeline 112 and the second water supply pipeline 113.

[0118] like Figure 8 As shown, in an embodiment of the present invention, one end of the foam rinsing pipe 27 can be connected to the water tank 111, and the foam rinsing pipe 27 can be provided with an external water inlet. That is, the water source for the foam rinsing pipe 27 can come from the water tank 111 or from the outside.

[0119] like Figure 1 As shown, in an embodiment of the present invention, the pumping unit 12 may have two output water paths, one of which is connected to the spraying unit 13, and the other is connected to the water tank 111. Water can be supplied to the water tank 111 through the output water path connected between the water tank 111 and the pumping unit 12.

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

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

[0122] In embodiments of the present invention, the source of each mode switching signal can be selected manually by pressing a button, and one-click operation of mode switching can be achieved by setting a controller.

[0123] like Figure 10 As shown, in an embodiment of the present invention, the controller can communicate with flow meters, pressure gauges, electrical switches of valves, foam pump unit 22, and water pump unit 12 on each pipeline. The controller can acquire the status of flow meters, pressure gauges, electrical switches of valves, foam pump unit 22, and water pump unit 12 on each pipeline, and can control each valve, foam pump unit 22, and water pump unit 12.

[0124] In summary, the fire protection system assembly of the present invention, when outputting foam, switches the state of the output control unit 23 according to the operating state of the pump unit 12. This not only eliminates dependence on the operation of the pump unit 12, enabling independent foam output and joint output with the pump unit 12, but also reduces the operating pressure required for the foam pump unit 22 when used in conjunction with the pump unit 12. The fire protection system assembly of the present invention has multiple operating modes. In each mode, it can achieve precise control of foam flow output. In the external foam supply mode, it can easily supply foam to other fire trucks or fire equipment, achieving linkage with other fire trucks or fire equipment. Each valve in the fire protection system assembly of the present invention can be controlled by a controller, enabling one-button automatic mode switching of the system assembly, greatly simplifying the operation process.

[0125] To achieve the above objectives, the present invention also provides a fire-fighting device, wherein the fire-fighting device may be a fire truck, and the fire-fighting device includes 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 about by the above embodiments, and will not be repeated here.

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

[0127] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0128] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0129] Although embodiments of the present invention have been described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to 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 includes: A foam supply system (S2) includes a foam supply unit (21), a foam pumping unit (22), a flow regulating pipe (25), and a circulation pipe (28) connected in sequence. One end of the flow regulating pipe (25) is connected to the outlet of the foam pumping unit (22). The flow regulating pipe (25) is used to divert the foam pumped out by the foam pumping unit (22). The flow regulating pipe (25) is equipped with a flow regulating valve (251) with adjustable opening. The circulation pipe (28) serves as a transfer station for foam storage and is located between the foam pumping unit (22) and the foam supply unit (21). The other end of the flow regulating pipe (25) is connected to the circulation pipe (28). 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 foam is output externally. The foam output is controlled by a foam output command. After receiving the foam output command, the controller is configured to: Responding to the foam output command; The operation of the pump foam unit (22) is controlled according to the foam output command; Control 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 the first preset value; Control the flow regulating valve (251) 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; The fire protection system assembly also includes a water supply system (S1), which includes a water supply unit (11), a pump unit (12), and a spray unit (13) connected in sequence. The foam supply system (S2) also includes an output control unit (23) connected to the outlet pipe of the pump foam unit (22). The output control unit (23) has a first output port (P1) and a second output port (P2). The first output port (P1) is connected to the inlet pipe of the pump unit (12), and the second output port (P2) is connected to the outlet pipe of the pump unit (12). Confirming the pipe connection between the pump foam unit (22) and the water supply system (S1) specifically includes: 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 open 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 open and the first output port (P1) is open.

2. The fire protection system assembly according to claim 1, characterized in that, The outlet pipe of the pump foam unit (22) is connected to the water supply system (S1), the foam output command includes a foam internal delivery command, and the controller is further configured to: Confirm that the water supply system (S1) is in operation, and confirm that the pipeline between the pump foam unit (22) and the water supply system (S1) is connected.

3. The fire protection system assembly according to claim 2, characterized in that, The water supply system (S1) includes a water supply unit (11), a water pump unit (12), and a spray unit (13) connected in sequence. The outlet of the foam pump unit (22) is connected to the outlet pipeline of the water pump unit (12). Confirming the pipeline connection between the foam pump unit (22) and the water supply system (S1) specifically includes: Confirm that the pipeline connection between the outlet of the pump foam unit (22) and the outlet of the pump water unit (12) is confirmed.

4. The fire protection system assembly according to claim 1, characterized in that, The water supply system (S1) includes a direct water supply unit (14), which includes a direct water supply pipeline (141). One end of the direct water supply pipeline (141) is connected 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.

5. The fire protection system assembly according to claim 1, characterized in that, The foam supply system (S2) also includes an external foam supply pipeline (26), which is equipped with an external supply control valve (261) for controlling the on / off state. One end of the external foam supply pipeline (26) is connected to the outlet pipeline of the pump foam unit (22), and the other end is connected to the outside. The foam output command also includes a foam output command for opening and closing the external supply control valve (261). The controller, in response to the foam external supply command, is further configured to: The external supply control valve (261) is opened.

6. The fire protection system assembly according to any one of claims 1 to 5, characterized in that, 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). The first foam pipeline (211) is provided with a tank supply control valve (211b) for controlling the on / off state. The tank supply control valve (211b) is connected to the controller. The controller is used to control the tank supply control valve (211b) to open after receiving the tank supply foam signal.

7. The fire protection system assembly according to claim 6, characterized in that, The foam supply unit (21) further includes a second foam pipeline (212), one end of which is connected to the outside and the other end is connected to the inlet pipeline of the pump foam unit (22). The second foam pipeline (212) is provided with an external suction control valve (212a) for controlling the on and off. The external suction control valve (212a) is connected to the controller. The controller is 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.

8. The fire protection system assembly according to claim 7, characterized in that, The foam supply system (S2) also includes a foam pumping pipeline (24), which is equipped with a pumping control valve (241) for controlling the on / off state. One end of the foam pumping pipeline (24) is connected to the foam storage tank (211a), and the other end is connected to the outlet pipeline of the foam pumping unit (22). The pumping control valve (241) is connected to the controller. The controller is used to control the opening of the pumping control valve (241) and the external suction control valve (212a) after receiving the foam filling signal, and to control the tank supply control valve (211b) and the flow regulating valve (251) to remain closed.

9. The fire protection system assembly according to any one of claims 1 to 5, characterized in that, The fire protection system assembly also includes a foam flushing pipeline (27), one end of which is connected to a water supply source 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 state. The foam flushing valve (271) is connected to the controller, which controls the foam flushing valve (271) to open after receiving a foam pipeline flushing signal.

10. The fire protection system assembly according to claim 9, characterized in that, The foam supply system (S2) also includes a liquid 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 liquid discharge pipeline (29) is provided with a liquid discharge control valve (291) for controlling the on and off. The liquid discharge control valve (291) is connected to the controller. The controller is also used to control the liquid discharge control valve (291) to open according to the foam pipeline flushing signal.

11. A fire-fighting device, characterized in that, Includes the fire protection system assembly according to any one of claims 1 to 10.

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