Pump set type refrigerant liquid automatic fire extinguishing system

Abstract

The invention relates to the technical field of intelligent fire fighting, and discloses a pump set type refrigerant liquid automatic fire extinguishing system which comprises a layout module, a first three-way pipe and a second three-way pipe, the refrigerant box is communicated with pipelines where the first main pump set and the second main pump set are located through the first three-way pipe, and the pipelines of the first main pump set and the second main pump set are connected in parallel; the tail ends of the pipelines where the first main pump set and the second main pump set are located are combined through a second three-way pipe and connected with a pressure pipeline. The pressure pipeline is provided with a pressure sensor used for detecting the transportation pressure of liquid in the pipeline. The fire behavior detection module obtains pressure data of the pressure sensor and compares the pressure data with a preset pressure threshold value, and when the liquid conveying pressure of the pressure pipeline is lower than the pressure threshold value, a pressure adjusting signal is sent out; the fire-fighting control module is used for receiving a pressure regulating signal so as to switch the operation states of the first main pump set and the second main pump set; the problem that in the prior art, water is supplied through unified pumping pressure, and fire disasters of different scales cannot be flexibly coped with is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent fire protection, and particularly to a pump - type refrigerant liquid automatic fire - extinguishing system. Background Art

[0002] In modern fire - fighting technology, the design and application of fire - extinguishing systems are of great significance for protecting people's lives and property. When a fire occurs, it often does not start everywhere at once, but starts from a certain or certain local areas. If these initial ignition points can be extinguished in time, the equipment in the remaining unaffected areas will be able to continue to operate normally, thus minimizing the losses caused by the fire. However, as the fire spreads, if the fire area continues to expand, it is necessary to mobilize the fire - sprinklers in multiple areas to operate in coordination to effectively control the fire.

[0003] Currently, most mainstream fire - extinguishing systems supply water with a unified pumping pressure. This design will face a series of problems when the fire area is small and only a small number of sprinklers are involved. Specifically, when the fire is limited to a small area, if the system continuously supplies water with a large pumping pressure, it will not only cause the water pipes to bear excessive pressure and burst, but also accelerate the wear of the fire - fighting system and shorten its service life. This not only increases the maintenance cost, but also may fail to play its due role at a critical moment due to system failure.

[0004] On the other hand, when the fire area is large and multiple sprinklers need to work simultaneously, the unified pumping pressure may not be able to meet the jet - pressure requirements of the sprinklers at a long distance. Since water is affected by factors such as frictional resistance when flowing in the pipeline, the water pressure obtained by the sprinklers far from the pressure pump is low, which affects the effectiveness of fire - extinguishing. In this case, even if the number of sprinklers is sufficient, it may not be able to quickly extinguish the fire source due to insufficient water pressure, delaying the best fire - extinguishing opportunity. Summary of the Invention

[0005] The present invention aims to provide a pump - type refrigerant liquid automatic fire - extinguishing system to solve the problem that the existing technology uses a unified pumping pressure for water supply and cannot flexibly respond to fires of different scales.

[0006] To achieve the above - mentioned purpose, the present invention adopts the following technical solution: A pump - type refrigerant liquid automatic fire - extinguishing system, comprising:

[0007] The layout module includes a refrigerant tank for storing refrigerant liquid, a first main pump group, and a second main pump group. The liquid inlet of the refrigerant tank is connected to an external refrigerant source through a solenoid valve. The liquid outlet of the refrigerant tank is connected to a first three-way pipe, through which the refrigerant tank is connected to the pipelines where the first main pump group and the second main pump group are located. The pipelines of the first main pump group and the second main pump group are in parallel. The first main pump group includes one or more pressure pumps connected in series, and the second main pump group includes one or more pressure pumps connected in series. The pumping force of the first main pump group is greater than that of the second main pump group. The ends of the pipelines where the first main pump group and the second main pump group are located are merged and connected to a pressure pipeline through a second three-way pipe. A pressure sensor for detecting the liquid transportation pressure in the pipeline is provided on the pressure pipeline. After the end of the pressure pipeline, the pipeline is divided into multiple branches, and the ends of each branch are connected to an atomizing nozzle group. The atomizing nozzle group includes multiple adjustable-direction atomizing nozzles connected in parallel and a pressure regulating pump connected in series with the multiple atomizing nozzles. Multiple adjacent cells are divided according to the area of the indoor space, and a group of atomizing nozzle groups is installed in each cell, and each group of atomizing nozzle groups can work independently;

[0008] The fire detection module is used to monitor fire information in real time, identify fires, and send out fire signals. Each cell is provided with a fire detection module; the fire detection module also obtains the pressure data of the pressure sensor and compares the pressure data with a preset pressure threshold. When the liquid transportation pressure of the pressure pipeline is lower than the pressure threshold, a pressure regulating signal is sent to the fire control module;

[0009] The fire control module is used to receive the fire signal and remotely send instructions to control each execution component. The fire control module is also used to receive the pressure regulating signal to switch the operating states of the first main pump group and the second main pump group to ensure the liquid supply pressure requirement.

[0010] The principle and advantages of this solution are as follows: In actual application, the system provides two options of different pumping forces by setting the first main pump group and the second main pump group. In the initial stage of a fire, a smaller pumping force may be sufficient to meet the fire extinguishing requirements, and at this time, the second main pump group can operate. As the fire spreads, if a greater pumping force is required, the system can automatically or manually switch to the first main pump group, or even both operate simultaneously to meet the greater fire extinguishing pressure requirements. When the fire detection module identifies a fire and sends out a fire signal, the fire control module first starts the second main pump group to extinguish the fire. If the pressure sensor detects that the liquid transportation pressure in the pressure pipeline is lower than the preset pressure threshold, the fire control module will receive the pressure regulating signal and automatically switch to the first main pump group or start both pump groups simultaneously to ensure that the liquid supply pressure meets the fire extinguishing requirements.

[0011] A set of atomizing nozzle groups that can work independently is installed in each cell, including multiple atomizing nozzles with adjustable directions connected in parallel and a pressure regulating pump connected in series with the multiple atomizing nozzles. This not only enables the system to extinguish fires targeted at different cells, but also can further precisely control the fire extinguishing effect by adjusting the angle of the atomizing nozzles and the working pressure of the pressure regulating pump.

[0012] Preferably, as an improvement, the system further includes a fire intensity calculation module;

[0013] The fire condition detection module collects flame data at the fire scene, and the flame data includes color images, thermal imaging images, smoke concentration, and wind direction information;

[0014] The fire intensity calculation module obtains the flame data from each flame detection module and inputs the flame data into the fire and smoke target detection algorithm, and calculates the gradient of the flame area through the bounding box of the flame area and the flame pixel distribution The gradient of the flame area The calculation formula is:

[0015]

[0016] Among them, I is the image intensity of the flame area, and are the gradients of the image in the horizontal and vertical directions respectively;

[0017] Obtain the wind direction vector through the wind direction information Obtain the smoke vector through the smoke concentration of multiple cell areas And calculate the fire spread direction through the gradient of the flame area, the wind direction, and the smoke direction The fire spread direction The calculation formula is:

[0018]

[0019] Among them, a, b, and c are the weights of the gradient of the flame area, the wind direction, and the smoke direction respectively, and normalize the fire spread direction Perform normalization processing,

[0020] Divide the indoor space into cells of M×N, and the size of each cell is Δx×Δy; then calculate the relative position vector between the center point of each cell and the fire source position The relative position vector The calculation formula is:

[0021]

[0022] Among them, (x i ,yi ) is the coordinate of the center point of the cell, (x fire , y fire ) is the location of the fire source, which is the position with the highest temperature in the flame area;

[0023] Calculate the spray direction θ of the atomizing nozzle for each cell i , and the spray direction θ of the atomizing nozzle i The calculation formula is:

[0024]

[0025] The fire calculation module transmits the calculation result to the fire control module. The fire control module encodes the corresponding instruction according to the calculation result and sends it to the corresponding actuator, and each atomizing nozzle in the cell deflects the spray direction according to the instruction.

[0026] The beneficial effects of this improvement are as follows: By accurately calculating the fire spread direction and the spray direction of the atomizing nozzle, the system can quickly spray the fire extinguishing medium into the fire source area, thus significantly improving the fire extinguishing efficiency. The precise fire extinguishing method and fast response speed help to reduce the damage to people and property caused by the fire, and reduce the economic losses and social impacts caused by the fire. The integration of the fire calculation module and the fire control module realizes the intelligence and automation of the system, reduces the possibility of manual intervention and misoperation, and improves the reliability and stability of the system.

[0027] Preferably, as an improvement, the flame data further includes the oxygen concentration;

[0028] The fire calculation module obtains the number of flame pixels and the total number of pixels through the smoke and fire target detection algorithm and calculates the proportion A of the flame area f , and the proportion A of the flame area f The calculation formula is:

[0029]

[0030] Calculate the spray pressure P of the atomizing nozzle for each cell i , and the spray pressure P of the atomizing nozzle i The calculation formula is:

[0031]

[0032] Among them, P0 is the preset basic nozzle pressure; α and β are adjustment parameters; A f is the proportion of the flame area; is the distance between the cell and the fire source; is the oxygen concentration detected in this cell; is the maximum value of the preset oxygen concentration.

[0033] The beneficial effects of this improvement are as follows: By considering the oxygen concentration, the system can more accurately judge the combustion situation at the fire scene, thereby calculating a more appropriate injection pressure to ensure that the fire extinguishing medium can more effectively cover the fire source area. Precise injection pressure calculation can avoid over-injection, reduce waste of water resources, and at the same time reduce interference with the surrounding environment. The system can automatically adjust the injection pressure according to the actual conditions of different fire scenes to adapt to various complex scenarios.

[0034] Preferably, as an improvement, the fire situation calculation module determines the cells located in the fire spread direction through and the cell center position coordinates, and adjusts the pressure of the cells in the fire spread direction;

[0035]

[0036] Among them, is the injection pressure of the cells in the fire spread direction, and γ is the pressure adjustment ratio.

[0037] The beneficial effects of this improvement are as follows: By adjusting the injection pressure of the cells in the fire spread direction, the system can form a certain pressure difference on the path of the flame spread, thereby guiding the fire extinguishing medium to more effectively cover the flame area and achieving coordinated fire extinguishing of each cell. In the flame area in the spread direction, the fire-fighting injection pressures in its front, back, left, right, and directly above can form a certain gradient. The injection pressures on the front side and directly above in the spread direction are relatively large to quickly suppress the flame; while the injection pressures in the remaining circumferential directions are moderate to control the lateral spread of the flame. This cooperation method avoids interference between the injection pressures of different cells and ensures the fire extinguishing effect.

[0038] Preferably, as an improvement, the fire situation calculation module determines the cells closer to the fire source through and a preset threshold, and adjusts the pressure of the cells closer to the fire source;

[0039]

[0040] Among them, is the injection pressure of the cells closer to the fire source, and δ is the pressure adjustment ratio.

[0041] The beneficial effects of this improvement are as follows: By increasing the injection pressure of the cells closer to the fire source, the system can act more directly on the fire source location, improving the fire extinguishing efficiency. In the flame area at the fire source location, the fire-fighting injection pressures in its front, back, left, right, and directly above can form a close cooperation to ensure that the fire extinguishing medium can comprehensively cover the fire source area. At the same time, by adjusting the injection pressures of different cells, interference between the injection pressures of different cells is avoided, ensuring the high efficiency of the fire extinguishing effect.

[0042] Preferably, as an improvement, the fire intensity calculation module transmits the calculation results to the fire control module, and the calculation results include the spray head direction θ of the atomizing spray head in each cell i , the injection pressure P of the atomizing spray head in each cell i , the cell information in the fire spreading direction, the cell information closer to the fire source, the injection pressure of the cells in the fire spreading direction and the injection pressure of the cells closer to the fire source The fire control module encodes corresponding instructions through the calculation results and sends them to the corresponding actuators. The atomizing spray heads in each cell deflect the spray head direction according to the instructions, and the corresponding pressure regulating pumps in the cells adjust the working power according to the instructions.

[0043] The beneficial effect of this improvement is that: through the comprehensive calculation results, the system can achieve precise control of the atomizing spray heads in each cell, including the spray head direction and the injection pressure. This precise control ensures that the fire extinguishing medium can accurately cover the fire source area and improve the fire extinguishing efficiency. Since the system can calculate and adjust the spray head direction and injection pressure of the atomizing spray heads in real time, it can quickly respond to the changes at the fire scene and ensure the fire extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic structural diagram of an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] The following is further detailed through specific embodiments:

[0046] The reference numerals in the accompanying drawings of the specification include: refrigerant tank 1, first main pump group 2, second main pump group 3, solenoid valve 4, atomizing spray head group 5, pressure regulating pump 6, atomizing spray head 7, fire control module 8 and pressure sensor 9.

[0047] Embodiment 1

[0048] A pump group type automatic fire extinguishing system for refrigerant liquid, comprising:

[0049] A layout module, basically as shown in the appendix Figure 1 , including a refrigerant tank 1, a first main pump group 2 and a second main pump group 3. The refrigerant tank 1 is used to store refrigerant liquid. The liquid inlet of the refrigerant tank 1 is connected to an external refrigerant source through a solenoid valve 4. The liquid outlet of the refrigerant tank 1 is connected with a first three-way pipe, and the refrigerant tank 1 is communicated with the pipelines where the first main pump group 2 and the second main pump group 3 are located through the first three-way pipe. The pipelines of the first main pump group 2 and the second main pump group 3 are in parallel.

[0050] The first main pump group 2 includes one or more pressure pumps in series, and the second main pump group 3 includes one or more pressure pumps in series. The pumping force of the first main pump group 2 is greater than the pumping force of the second main pump group 3. The ends of the pipelines where the first main pump group 2 and the second main pump group 3 are located are connected to the pressure pipeline through a second tee pipe. The pressure pipeline is provided with a pressure sensor 9 for detecting the liquid transport pressure in the pipeline. The end of the pressure pipeline is then divided into multiple branches through the pipeline. The ends of each branch are connected to the atomizing nozzle group 5. The atomizing nozzle group 5 includes multiple parallel atomizing nozzles 7 with adjustable directions and a pressure regulating pump 6 connected in series with multiple atomizing nozzles 7. Multiple adjacent cells are divided according to the area of the indoor space. A group of atomizing nozzle groups 5 are installed in each cell. Each group of atomizing nozzle groups 5 can work independently to achieve precise strikes on fire sources in their respective responsible areas.

[0051] The fire detection module is used to monitor fire information, identify fire, and send out fire signals. Each cell is equipped with a fire detection module. When the fire detection module identifies a fire, it quickly sends a fire signal to the fire control module 8.

[0052] The fire detection module includes but is not limited to smoke detectors and flame detectors. Smoke detectors can keenly sense changes in the concentration of smoke particles in the air. Once the concentration exceeds the preset threshold, it is considered a potential fire risk and immediately sends out a fire signal. Flame detectors directly observe the presence of visible flames and use photoelectric effects or image processing technology to immediately trigger an alarm once the flame characteristics are identified.

[0053] The fire detection module also obtains pressure data from the pressure sensor 9 and compares the pressure data with a preset pressure threshold. When the liquid delivery pressure of the pressure pipeline is lower than the pressure threshold, a pressure regulation signal is sent to the fire control module 8.

[0054] The fire control module 8 is used to receive fire signals and remotely issue instructions to control each execution component; the fire control module 8 is electrically connected to the first main pump group 2 and the second main pump group 3, and is used to issue operation instructions to control the operation of the first main pump group 2 and the second main pump group 3. The fire control module 8 is electrically connected to the pressure regulating pump 6, and is used to control the liquid supply pressure of the pressure regulating pump 6. The fire control module 8 is electrically connected to the atomizing nozzle 7, and is used to control the deflection angle of the atomizing nozzle 7. The fire control module 8 is electrically connected to the solenoid valve 4.

[0055] Application of pump type refrigerant liquid automatic fire extinguishing system:

[0056] When a fire signal occurs in the area where one or more cells are located, the staff confirms the execution of fire extinguishing through the fire control module 8, and the fire control module 8 automatically sends corresponding instructions to each execution component.

[0057] The fire control module 8 sends an operation instruction to the second main pump group 3. At this time, the first main pump group 2 is defaulted to the stopped operation state, and only the second main pump group 3 starts to operate, transporting the refrigerant liquid in the refrigerant tank 1 through the pipeline where the second main pump group 3 is located to the pressure pipeline and flowing to the branch line corresponding to the corresponding cell.

[0058] When the fire control module 8 receives a pressure regulating signal, it sends a stop instruction to the second main pump group 3 and sends an operation instruction to the first main pump group 2. The current system switches to the operation of the first main pump group 2, transporting the refrigerant liquid in the refrigerant tank 1 through the pipeline where the first main pump group 2 is located to the pressure pipeline.

[0059] When the fire control module 8 still continuously receives a pressure regulating signal, while the first main pump group 2 is operating, it sends an operation instruction to the second main pump group 3. The system is switched to the state where both the first main pump group 2 and the second main pump group 3 jointly transport the refrigerant liquid in the refrigerant tank 1 to the pressure pipeline.

[0060] The fire control module 8 sends instructions to the pressure regulating pumps 6 of each cell that sends a fire signal, so that each pressure regulating pump 6 works according to the corresponding pumping pressure; the fire control module 8 also sends instructions to the atomizing nozzles 7 of each cell that sends a fire signal, so that each group of atomizing nozzles 7 deflects according to the corresponding angle.

[0061] When the liquid level in the refrigerant tank 1 is lower than the predetermined value, the fire control module 8 controls the solenoid valve 4 to open to achieve automatic replenishment of the refrigerant liquid.

[0062] Embodiment 2

[0063] Based on the above solution, the flame detector of the fire detection module obtains a color image for analyzing the flame color characteristics and a thermal imaging image for analyzing the high-temperature area by measuring the light intensity or infrared radiation intensity of the flame. The flame detectors in multiple cells form triangulation for calculating the area of the flame region. The smoke detector can detect the presence and concentration of indoor smoke, and through the smoke detectors in multiple cells, the diffusion direction of the smoke can be calculated.

[0064] The fire detection module further includes a gas sensor for detecting the indoor oxygen concentration and a wind direction sensor for detecting the indoor wind direction.

[0065] The pump group type refrigerant liquid automatic fire extinguishing system further includes a fire intensity calculation module. The fire intensity calculation module obtains flame data from each flame detection module, and the flame data includes color images, thermal imaging images, smoke concentration, oxygen concentration, and wind direction information.

[0066] The collected color image and thermal imaging image are input into a fireworks target detection algorithm, such as YOLOv7. The fireworks target detection algorithm preprocesses the input image and identifies and outputs the number of flame pixels, the total number of pixels, the bounding box of the flame area, and the location of the fire source.

[0067] Calculate the proportion A of the flame area f = Flame pixel data / Total pixel data; The number of flame pixels is obtained through the fireworks target detection algorithm, and the total number of pixels is the total number of pixels in the image. The fire source location (x fire , y fire ) is the location with the highest temperature within the flame area.

[0068] The fireworks target detection algorithm calculates the density change of the flame pixels through the bounding box of the flame area and the flame pixel distribution to obtain the gradient of the flame area The gradient of the flame area The calculation formula is:

[0069]

[0070] where I is the image intensity of the flame area, and are the gradients of the image in the horizontal and vertical directions respectively.

[0071] Obtain the wind direction vector through the wind direction information Obtain the smoke vector through the smoke concentration of multiple cell areas And calculate the fire spread direction through the gradient of the flame area, the wind direction, and the smoke direction The fire spread direction The calculation formula is:

[0072]

[0073] where a, b, and c are the weights of the gradient of the flame area, the wind direction, and the smoke direction respectively, where a + b + c = 1, a ≥ b, a ≥ c. And normalize the fire spread direction

[0074] Divide the indoor space into cells of M×N, with the size of each cell being Δx×Δy; then calculate the relative position vector between the center point of each cell and the fire source location The relative position vector The calculation formula is:

[0075]

[0076] where (x i , y i ) is the coordinate of the center point of the cell.​

[0077] Calculate the nozzle direction θ of the atomizing nozzle for each cell i , the nozzle direction θ of the atomizing nozzle i The calculation formula is:

[0078]

[0079] Calculate the injection pressure P of the atomizing nozzle for each cell i , the injection pressure P of the atomizing nozzle i The calculation formula is:

[0080]

[0081] where P0 is the preset basic nozzle pressure; α and β are adjustment parameters, α is 0.1 - 0.5, β is 0.01 - 0.1; A f is the proportion of the flame area; is the distance between the cell and the fire source; is the oxygen concentration detected in this cell; is the maximum value of the preset oxygen concentration. In this embodiment, is set as the volume fraction of oxygen under standard atmospheric conditions, that is, 21%. By detecting the ratio of the oxygen concentration to the maximum value of the oxygen concentration, the oxygen consumption situation in each cell area can be evaluated. The lower the ratio, the thinner the oxygen in the fire scene, and the more intense the combustion may be, and a higher nozzle pressure is required to extinguish the fire.

[0082] The fire intensity calculation module also determines the cells located in the fire spread direction through and the cell center position coordinates, and determines the cells closer to the fire source through and a preset threshold, and adjusts the pressure of the cells in the fire spread direction and the cells closer to the fire source.

[0083]

[0084] where, is the injection pressure of the cell in the fire spread direction, is the injection pressure of the cell closer to the fire source, γ and δ are pressure adjustment ratios, γ is 0.5 - 1.0, δ is 0.5 - 1.5.

[0085] The fire intensity calculation module transmits the calculation results to the fire control module. The calculation results include the nozzle direction θ of the atomizing nozzle for each cell i , the injection pressure P of the atomizing nozzle for each cell i , the cell information in the fire spread direction, the cell information closer to the fire source, the injection pressure of the cell in the fire spread direction And the injection pressure of the cells closer to the heat source The fire control module encodes corresponding instructions according to the calculation results and sends them to the corresponding actuators. Each atomizing nozzle in the cell deflects the nozzle direction according to the instructions, and the pressure regulating pump corresponding to the cell adjusts the working power according to the instructions, so as to adjust the series-connected atomizing nozzles to work at the specified injection pressure.

[0086] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. The pump - type refrigerant liquid automatic fire - extinguishing system is characterized in that, Comprising: A layout module, including a refrigerant tank for storing refrigerant liquid, a first main pump group and a second main pump group. The liquid inlet of the refrigerant tank is connected to an external refrigerant source through a solenoid valve. The liquid outlet of the refrigerant tank is connected to a first three-way pipe, through which the refrigerant tank is connected to the pipelines where the first main pump group and the second main pump group are located. The pipelines of the first main pump group and the second main pump group are in parallel. The first main pump group includes one or more pressure pumps connected in series, and the second main pump group includes one or more pressure pumps connected in series. The pumping force of the first main pump group is greater than that of the second main pump group. The ends of the pipelines where the first main pump group and the second main pump group are located are merged and connected to a pressure pipeline through a second three-way pipe. A pressure sensor for detecting the liquid transportation pressure in the pipeline is provided on the pressure pipeline. After the end of the pressure pipeline, the pipeline is divided into multiple branches, and the ends of each branch are connected to an atomizing nozzle group. The atomizing nozzle group includes multiple adjustable-direction atomizing nozzles connected in parallel and a pressure regulating pump connected in series with the multiple atomizing nozzles. According to the area of the indoor space, multiple adjacent cells are divided, and a set of atomizing nozzle groups is installed in each cell, and each set of atomizing nozzle groups can work independently; A fire detection module, used to monitor fire information in real time, identify fires, and send out fire signals. Each cell is provided with a fire detection module; the fire detection module also obtains the pressure data of the pressure sensor and compares the pressure data with a preset pressure threshold. When the liquid transportation pressure of the pressure pipeline is lower than the pressure threshold, a pressure regulation signal is sent to the fire control module; A fire control module, used to receive fire signals and remotely send instructions to control each actuator component. The fire control module is also used to receive the pressure regulation signal to switch the operating states of the first main pump group and the second main pump group to ensure the liquid supply pressure requirement.

2. The pump - type refrigerant liquid automatic fire - extinguishing system according to claim 1, wherein: The system further includes a fire intensity calculation module; The fire detection module collects flame data at the fire scene, and the flame data includes color images, thermal imaging images, smoke concentration and wind direction information; The fire intensity calculation module obtains fire data from each flame detection module, inputs the fire data into the fireworks target detection algorithm, and calculates the gradient of the flame area based on the bounding box of the flame area and the flame pixel distribution. The gradient of the flame area The calculation formula is as follows: where I is the image intensity of the flame region, and are the gradients of the image in the horizontal and vertical directions, respectively; Obtain the wind direction vector through wind direction information Obtain the smoke vector based on the smoke concentrations in multiple cell regions And calculate the fire spread direction based on the gradient, wind direction, and smoke direction in the fire area Fire spread direction The calculation formula is as follows: where a, b, and c are the weights of the gradient, wind direction, and smoke direction in the flame area, respectively, and the fire spread direction is normalized. Divide the indoor space into cells of M×N, where the size of each cell is Δx×Δy; then calculate the relative position vector between the center point of each cell and the position of the fire source Relative position vector The calculation formula of is as follows: Among them, (x i , y i ) is the center point coordinate of the cell, and (x fire , y fire ) is the fire source location, which is the location with the highest temperature in the flame area; Calculate the nozzle direction θ of the atomizing nozzle for each cell i , the nozzle direction θ of the atomizing nozzle i The calculation formula is as follows: The fire intensity calculation module transmits the calculation result to the fire control module, and the fire control module encodes corresponding instructions through the calculation result and sends them to the corresponding actuator, and each atomizing nozzle in the cell deflects the nozzle direction according to the instructions.

3. The pump - type refrigerant liquid automatic fire - extinguishing system according to claim 2, wherein: The flame data further includes oxygen concentration; The fire intensity calculation module obtains the number of flame pixels and the total number of pixels through the smoke and fire target detection algorithm and calculates the proportion A of the flame area f , the proportion A of the flame area f The calculation formula is as follows: Calculate the injection pressure P of the atomizing nozzle for each cell i , the injection pressure P of the atomizing nozzle i The calculation formula is as follows: Wherein, P0 is the preset basic nozzle pressure; α and β are adjustment parameters; A f is the proportion of the flame area; is the distance between the cell and the fire source; is the oxygen concentration detected in this cell; is the maximum value of the preset oxygen concentration.

4. The pump - type refrigerant liquid automatic fire - extinguishing system according to claim 3, wherein: The fire intensity calculation module determines the cells located in the fire spreading direction through and the cell center position coordinates, and adjusts the pressure of the cells in the fire spreading direction; Among them, is the injection pressure of the cell in the fire spread direction, and γ is the pressure adjustment ratio.

5. The pump - type refrigerant liquid automatic fire - extinguishing system according to claim 4, wherein: The fire intensity calculation module determines, based on and a preset threshold value, the cells that are closer to the fire source and adjusts the pressure of the cells closer to the fire source; Among them, is the injection pressure of the cell closer to the heat source, and δ is the pressure adjustment ratio.

6. The pump - type refrigerant liquid automatic fire - extinguishing system according to claim 5, characterized in that: The fire intensity calculation module transmits the calculation results to the fire control module. The calculation results include the spray head direction θ of the atomizing spray heads in each cell i , the spray pressure P of the atomizing spray heads in each cell i , the cell information in the fire spreading direction, the cell information closer to the fire source, the spray pressure of the cells in the fire spreading direction and the spray pressure of the cells closer to the fire source The fire control module encodes corresponding instructions based on the calculation results and sends them to the corresponding actuators. The atomizing spray heads in each cell deflect the spray head direction according to the instructions, and the corresponding pressure regulating pumps in the cells adjust the working power according to the instructions.

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