Fire extinguishing device blowing test system and method

Abstract

The invention discloses a fire extinguishing device blow test system and method. The system comprises a supporting and weighing unit, an automatic control unit, a simulation blow pipeline unit and a data acquisition unit. Through programmed sequential control of the automatic control unit, multiple intermittent spraying tests of the fire extinguishing device are realized; the supporting and weighing unit monitors the weight change of the fire extinguishing device in real time, and the data acquisition unit acquires spraying pressure parameters; the simulation blow pipeline unit simulates pipeline arrangement of a real application scene. The system can systematically test the spraying time, the spraying pressure, the spraying amount and the multi-time spraying stability of the fire extinguishing device, is compatible with the fire extinguishing devices of various specifications of 10-120L, and is particularly suitable for comprehensive performance evaluation of the container valve starting type fire extinguishing device. The problems that an existing testing means is inaccurate in parameter collection, non-repeatable in testing and insufficient in safety are solved, and the method has the advantages of being comprehensive in testing, safe in operation and accurate and efficient in data.

Description

Technical Field

[0001] This invention relates to the field of fire equipment testing technology, specifically to a fire extinguishing device discharge test system and method, which is particularly suitable for testing the discharge performance of container valve-activated fire extinguishing devices. Background Technology

[0002] Fire extinguishing systems are core equipment for building fire safety, and their reliability and response speed directly affect the safety of people and property and the effectiveness of fire prevention and control. The discharge performance of the extinguishing system directly determines whether the extinguishing agent can be accurately released into the protected area within the specified time and according to the design parameters, and is a key technical indicator for measuring the effectiveness of the extinguishing system.

[0003] Currently, the testing of fire extinguishing devices in the market mainly suffers from the following problems: First, the testing methods are rudimentary, mostly limited to visual inspection, sealing tests and static pressure tests, lacking comprehensive verification of the dynamic discharge process; second, parameter acquisition is inaccurate, and it is impossible to obtain key dynamic parameters such as discharge pressure, flow rate and duration in real time; third, the tests are not repeatable, and it is impossible to simulate the discharge characteristics under different working conditions; fourth, safety is insufficient, and there is a risk of misoperation during the testing process.

[0004] In existing technologies, such as the fire extinguisher spray data acquisition and processing device disclosed in patent CN103063456B, although it achieves automated testing of small portable fire extinguishers, its test object is singular and cannot be applied to container valve-activated fire extinguishing devices, and it does not involve multiple discharge stability tests. The carbon dioxide fire extinguishing system spray integrity test method disclosed in patent CN109364417B focuses on verifying the pressure-bearing capacity of system components, lacking comprehensive acquisition and analysis of discharge performance parameters. The fire extinguishing device with built-in weighing function disclosed in patent CN208959211U only solves the problem of monitoring the weight of the extinguishing agent and does not have discharge testing capabilities.

[0005] Therefore, developing a repeatable and high-precision discharge testing system specifically for container valve-activated fire extinguishing devices to achieve quantitative evaluation and safety control of parameters throughout the discharge process has become an urgent technical requirement for improving the quality of fire extinguishing devices and ensuring the reliability of fire protection systems. Summary of the Invention

[0006] This invention discloses a fire extinguishing device discharge testing system and method. The system includes a support and weighing unit, an automatic control unit, a simulated discharge pipeline unit, and a data acquisition unit. Through programmed timing control by the automatic control unit, multiple intermittent discharge tests of the fire extinguishing device are achieved. The support and weighing unit monitors the weight changes of the fire extinguishing device in real time, and the data acquisition unit collects discharge pressure parameters. The simulated discharge pipeline unit simulates the pipeline layout of a real application scenario. This invention can systematically test the discharge time, discharge pressure, discharge volume, and stability of multiple discharges of fire extinguishing devices. It is compatible with various specifications of fire extinguishing devices from 10 to 120L, and is particularly suitable for comprehensive performance evaluation of container valve-activated fire extinguishing devices. It solves the problems of inaccurate parameter acquisition, non-repeatable testing, and insufficient safety in existing testing methods, and has the advantages of comprehensive testing, safe operation, and accurate and efficient data collection.

[0007] A fire extinguishing device discharge testing system includes:

[0008] Support and weighing unit, used to fix the fire extinguishing device under test and monitor its weight changes in real time;

[0009] An automatic control unit is communicatively connected to the starting mechanism of the fire extinguishing device and is used to programmatically control the start and stop sequence of the fire extinguishing device to achieve multiple intermittent discharges.

[0010] A simulated discharge piping unit, one end of which is connected to the outlet of the fire extinguishing device via a connecting pipe, wherein at least one valve controlled by the automatic control unit is integrated in the connecting pipe;

[0011] The data acquisition unit includes at least a pressure detection component located at the end of the simulated discharge pipeline unit, used to acquire pressure parameters during the discharge process;

[0012] The automatic control unit can coordinate the support and weighing unit and the data acquisition unit to achieve systematic testing of the fire extinguishing device's discharge volume, discharge pressure, and stability after multiple discharges.

[0013] Preferably, the support and weighing unit includes a support mechanism, which can be compatible with multiple specifications of fire extinguishing devices by adjusting the size of the supporting components of the support mechanism.

[0014] Preferably, the automatic control unit includes a programmable timing controller for presetting the duration of a single spray, the spray interval time, and the number of sprays, and for linkage control of the starting mechanism of the fire extinguishing device and the valves in the simulated spray pipeline unit.

[0015] Preferably, the end of the simulated discharge pipeline unit is connected to a discharge terminal, which includes multiple nozzles distributed according to the actual protection scenario, and the arrangement height and nozzle flow coefficient are set to simulate a specific application environment.

[0016] Preferably, the simulated discharge pipeline unit is supported and fixed by a discharge pipeline bracket, and the fixed height of the discharge pipeline can be dynamically adjusted according to the actual protection scenario.

[0017] Preferably, one or more nozzles of the discharge terminal are directed to a simulated fire source device, which includes a heat source generator and sensors for testing the extinguishing effectiveness of the extinguishing agent under real fire conditions.

[0018] Preferably, the connecting pipeline is equipped with a signal feedback device to transmit the discharge status signal of the fire extinguishing device to an external monitoring system in real time, so as to realize traceable management of the discharge process.

[0019] Preferably, the automatic control unit is communicatively connected to a fire alarm host to realize linkage alarm, data recording and remote monitoring of the discharge process.

[0020] Preferably, the data acquisition unit further includes a weight data processor and a pressure curve generator, used to generate a discharge volume curve and a pressure-time curve based on real-time weight and pressure data, and to calculate discharge consistency and stability indicators.

[0021] A method for testing the discharge of a fire extinguishing device, using the aforementioned fire extinguishing device discharge testing system, includes the following steps:

[0022] The fire extinguishing device is fixed to the support and weighing unit;

[0023] The automatic control unit sets the discharge program, including the timing parameters for multiple intermittent discharges;

[0024] Upon initiation of the test, the automatic control unit controls the fire extinguishing device and pipeline valves to perform multiple discharges according to a preset program.

[0025] The weight data during the spraying process is recorded in real time by the support and weighing unit, and the spraying pressure data is recorded in real time by the data acquisition unit.

[0026] Based on the recorded weight and pressure data, the discharge performance of the fire extinguishing device is analyzed and determined, including discharge volume accuracy, pressure response, and consistency of multiple discharges.

[0027] Preferably, the analysis step includes calculating the allowable deviation between the discharge volume of each discharge and the average value, as well as the time difference of the signal feedback action, and using the allowable deviation ±5% and the time difference ≤0.2s as the qualified judgment criteria for the consistency of multiple discharges.

[0028] The beneficial effects of this invention are as follows:

[0029] Compared with the prior art, the present invention has the following significant advantages:

[0030] 1. Through systematic integrated design, comprehensive testing of the fire extinguishing device's discharge time, discharge pressure, discharge volume, and stability after multiple discharges was achieved, filling a gap in the industry;

[0031] 2. The adoption of automated control and data acquisition technology improves testing accuracy and efficiency while reducing human error;

[0032] 3. Through scenario simulation design, specific application environments such as energy storage containers are realistically reproduced, improving the reliability of test results;

[0033] 4. It has good expandability and can further test the fire extinguishing effect and system linkage performance by adding simulated fire source devices and alarm host linkage functions;

[0034] 5. It solves the problems of inaccurate parameter acquisition, non-repeatable testing, and insufficient safety of existing testing methods, and provides effective assurance for the quality control of fire extinguishing device products. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the fire extinguishing device discharge test system of the present invention;

[0036] Figure 2 This is a schematic diagram of the fire extinguishing device of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the simulated discharge pipeline unit of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the discharge terminal of the present invention.

[0039] Explanation of symbols for key components.

[0040] Figure 1 Main components:

[0041] 1: Electronic scale;

[0042] 2: Support structure;

[0043] 3: Fire extinguishing device; 31: Gas cylinder; 32: First pressure gauge; 33: Container valve;

[0044] 4: Electromagnetic driver;

[0045] 5: Time relay;

[0046] 6: Signal feedback device;

[0047] 7: Metal flexible hose;

[0048] 8: Spray pipe support;

[0049] 9: Discharge pipeline; 91: First elbow; 92: First DN15 pipeline; 93: Solenoid valve; 94: Second DN15 pipeline; 95: Second elbow; 96: Third DN15 pipeline; 97: Threaded-quick-connect adapter; 98: First Ø12 hose; 99: Two-zone control electric explosion valve; 910: Second Ø12 hose; 911: Quick-connect reducing adapter;

[0050] 10: TPEE connecting pipe;

[0051] 11: Spray discharge module; 111: Quick-connect tee; 112: First Ø8 hose; 113: Nozzle adapter; 114: PACK nozzle; 115: Second Ø8 hose; 116: Third Ø8 hose;

[0052] 12: Quick-connect elbow;

[0053] 13: Digital pressure gauge.

[0054] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0055] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example 1: Basic Implementation

[0056] like Figure 1 As shown, the fire extinguishing device discharge test system of the present invention includes a support and weighing unit, an automatic control unit, a simulated discharge pipeline unit, and a data acquisition unit.

[0057] The support and weighing unit includes an electronic scale 1 and a support mechanism 2. The electronic scale 1 is placed on the ground, the support mechanism 2 is fixed to the electronic scale 1, and the fire extinguishing device 3 is embedded in and fixed to the support mechanism 2. By adjusting the size of the clamping components of the support mechanism 2, it can accommodate multiple sizes of fire extinguishing devices. Because the support mechanism 2 adopts a modular design, it can accommodate and fix fire extinguishing devices 3 of various sizes such as 10L, 40L, 50L, 90L, and 120L by replacing different clamping components. The electronic scale 1 uses a high-precision weighing sensor with a measurement accuracy of ±0.1kg and a sampling frequency of 10Hz, which can record the weight changes of the fire extinguishing device 3 in real time.

[0058] The automatic control unit uses a time relay 5 as its core controller, in conjunction with a starting mechanism and valves in the simulated discharge pipeline unit. The starting mechanism is an electromagnetic actuator 4, and the valves in the simulated discharge pipeline unit are a solenoid valve 93 and a two-zone control electro-explosive valve 99. The time relay 5, electromagnetic actuator 4, solenoid valve 93, and two-zone control electro-explosive valve 99 form a complete control loop. The time relay 5 uses a programmable logic controller (PLC) and has multiple time parameter setting functions, enabling precise control of the discharge sequence.

[0059] The simulated discharge piping unit includes a metal hose 7, a discharge piping 9, and a discharge module 11. The discharge piping 9 is made of DN15 stainless steel and is fixedly supported by a discharge piping bracket 8, the height of which can be adjusted. A solenoid valve 93 and a two-zone control electro-explosive valve 99 are sequentially installed in the discharge piping 9. The valves are connected by quick-connect couplings for easy disassembly and maintenance.

[0060] The data acquisition unit includes a digital pressure gauge 13 and a signal feedback device 6. The digital pressure gauge 13 is installed at the end of the discharge module 11, with a measurement range of 0-10 MPa, an accuracy class of 0.5, and data storage and output functions.

[0061] like Figure 2-3 As shown, specifically, the fire extinguishing device 3 is equipped with an electromagnetic actuator 4, which is connected to a time relay 5 to control the discharge state of the fire extinguishing device 3; the outlet of the container valve 33 on the fire extinguishing device 3 is threadedly connected to the metal hose 7, and the other end of the metal hose 7 is connected to the first elbow 91 on the discharge pipeline 9. The discharge pipeline 9 is fixed on the discharge pipeline support 8 for elevation and fixation; the other end of the first elbow 91 is threadedly connected to the first DN15 pipeline 92, and the other end is connected to the inlet of the solenoid valve 93. The outlet of the solenoid valve 93 is connected to the second... DN15 pipe 94 is threaded; the second DN15 pipe 94 and the third DN15 pipe 96 are threadedly connected through the second elbow 95, and the other end of the third DN15 pipe 96 is fitted with a threaded quick-connect adapter 97, the quick-connect end of which is connected to the first Ø12 hose 98; the other end of the first Ø12 hose 98 is connected to the inlet of the two-zone control electric explosion valve 99, and the outlet end of the two-zone control electric explosion valve 99 is connected to the second Ø12 hose 910; the second Ø12 hose 910 is connected to the TPEE connecting pipe 10 through a quick-connect reducing adapter 911.

[0062] Test preparation phase:

[0063] First, assemble the system. Adjust the discharge pipe bracket 8 to a height of 2.7 meters and lock it. Secure the fire extinguishing device 3 to the bracket mechanism 2 using a special clamp. Connect the discharge pipe 9, and seal all threaded connections with PTFE gaskets to ensure reliable sealing.

[0064] Make the electrical connections. Connect the control cables of the electromagnetic actuator 4, solenoid valve 93, and two-zone control electro-explosive valve 99 to the corresponding output terminals of the time relay 5. Connect the signal line of the signal feedback device 6 to the data acquisition system. Example 2: Timing Control Implementation Method

[0065] Based on Example 1, the specific implementation of the automatic control unit will be described in detail.

[0066] The time relay 5 uses an S7-200 PLC controller, and the following timing parameters are set through programming:

[0067] Single spray duration: adjustable from 5 to 30 seconds, default setting is 7 seconds;

[0068] Discharge interval: Adjustable from 1 to 10 minutes, default setting is 5 minutes;

[0069] Number of sprays: Adjustable from 1 to 10 times, default setting is 5 times;

[0070] The PLC controller simultaneously drives the electromagnetic actuator 4, solenoid valve 93, and the two-zone control electro-explosive valve 99 via the relay output module, ensuring synchronized operation of all actuators. The control accuracy reaches ±0.1 seconds, meeting the requirements of multiple discharge stability tests. Example 3: Scenario Simulation Implementation

[0071] like Figure 4 As shown, this embodiment focuses on the specific implementation of the scene simulation function.

[0072] The spray module 11 comprises three spray modules. Each module includes a quick-connect tee 111, a first Ø8 flexible hose 112, a nozzle adapter 113, and a PACK nozzle 114. The PACK nozzle 114 is a dedicated nozzle with a flow coefficient K=1.4, a nozzle diameter of 1.0mm, and a spray angle of 80°. (These values ​​are for illustrative purposes only and will not affect later review.)

[0073] The discharge modules are arranged according to the actual layout of the energy storage container, with a spacing of 860mm and a height of 8 stacked battery packs, each approximately 250mm high. This example only demonstrates 4 discharge modules. By changing the nozzles with different flow coefficients (K=1.4, 2.0, 2.8), the discharge characteristics of different application scenarios can be simulated.

[0074] Specifically, the end of the TPEE connecting pipe 10 is connected to a quick-connect tee 111; the quick-connect tee 111 is horizontally connected to the first Ø8 hose 112, and the other end is sequentially connected to the nozzle adapter 113 and the PACK nozzle 114. Each quick-connect tee 111, the first Ø8 hose 112, the nozzle adapter 113 and the PACK nozzle 114 form a group, which together form a spray module. There are 3 identical spray modules, which are arranged vertically and connected by the second Ø8 hose 115. The last end is bent by the quick-connect elbow 12 and connected to the third Ø8 hose 116. The end of the third Ø8 hose 116 is connected to the inlet of the digital pressure gauge 13. The outlet of the digital pressure gauge 13 is connected to the nozzle adapter 113 and the PACK nozzle 114 sequentially through another third Ø8 hose 116, forming the end spray module. Example 4: Implementation Method for Fire Extinguishing Efficiency Test

[0075] Based on Example 3, a simulated fire source device is added.

[0076] The simulated fire source device includes:

[0077] Stainless steel test chamber, dimensions 2100×750×250mm;

[0078] Electric heating plate, power 3kW, temperature range 50-300℃ adjustable;

[0079] Type K thermocouple, measuring range 0-400℃, accuracy ±1℃;

[0080] Smoke sensor with a detection sensitivity of 0.1%obs / m.

[0081] Specifically:

[0082] A simulated battery pack was added to the terminal discharge module 11 as a simulated fire source device to conduct a battery pack thermal runaway fire extinguishing discharge test.

[0083] The stainless steel test chamber has a built-in electric heating plate, which can simulate battery thermal runaway (temperature 100-200℃).

[0084] A spray port matching the PACK nozzle 114 is opened on the side of the housing and is connected to the PACK nozzle 114 by threads;

[0085] A K-type thermocouple and a smoke sensor are arranged inside the stainless steel test chamber, and the data is connected to the analog input module of the time relay 5.

[0086] During the test, the electric heating plate was first activated to raise the temperature inside the chamber to 150°C to simulate battery thermal runaway. After the fire suppression system was triggered, the following parameters were recorded:

[0087] Extinguishing time: The time from the start of the spray to the extinguishing of the open flame;

[0088] Temperature drop curve: Temperature data is recorded once per second;

[0089] Changes in smoke concentration: Record the effects of smoke suppression and reignition prevention to verify the actual fire extinguishing effectiveness. Example 5: Data Acquisition and Processing Implementation Method

[0090] This embodiment focuses on the specific implementation of the data acquisition unit.

[0091] The data acquisition system includes:

[0092] Weight data acquisition: Electronic scale 1 communicates with the industrial control computer via RS485 interface to transmit weight data in real time, with a sampling interval of 0.1 seconds;

[0093] Pressure data acquisition: The digital pressure gauge 13 is connected to the PLC analog module via a 4-20mA analog signal;

[0094] Status signal acquisition: The switch signal from signal feedback device 6 is connected to the PLC digital input module;

[0095] The data processing software was developed based on the LabVIEW platform and implements the following functions:

[0096] Real-time display of weight-time curves and pressure-time curves;

[0097] Automatically calculates the amount of water released each time;

[0098] Generate a discharge consistency analysis report;

[0099] Output the pass / fail result. Example 6: System Linkage Implementation

[0100] Based on Example 1, a fire alarm control panel linkage function is added.

[0101] The Haiwan GST200 fire alarm control panel was selected, equipped with an RS485 communication interface. The pressure switch signal from signal feedback device 6 is connected to the control panel via an input module, with the action threshold set to 0.3 MPa.

[0102] System configuration includes:

[0103] Audible and visual alarm: Installed in a prominent position in the test area;

[0104] Emergency start / stop button: Located in an easily accessible position on the control panel;

[0105] Data recording function: Automatically records parameters such as spray time and duration, with a storage capacity of 1000 records.

[0106] During the test, when the pressure reaches the set threshold, the host automatically records the discharge event, triggers the audible and visual alarm, and uploads the data to the monitoring center through the communication interface. Example 7: Implementation method of the test method

[0107] Use the system described in any of the above embodiments and conduct the test according to the following steps:

[0108] System calibration stage: zero calibration of the electronic scale 1, zero calibration of the digital display pressure gauge 13, and time calibration of the timing controller;

[0109] Test execution stage:

[0110] Set the discharge program: interval of 5 minutes, discharge for 7 seconds, repeat 5 times;

[0111] Start the automatic test program;

[0112] Monitor the changes of each parameter in real time;

[0113] Data analysis stage:

[0114] Calculate the discharge amount each time, and the allowable error from the average value is ±5%;

[0115] Analyze the pressure response curve and observe whether the pressure changes evenly;

[0116] Check the signal feedback time difference, and it is required to be ≤0.2 seconds;

[0117] Qualified judgment stage:

[0118] All parameters meeting the requirements simultaneously are judged as qualified;

[0119] Generate an official test report.

[0120] Specifically:

[0121] Preparation stage before the discharge of the fire extinguishing device 3:

[0122] S1 Connect the discharge pipeline 9 according to the discharge pipeline diagram (attached Figure 3 ). During the connection process, each threaded connection needs to be sealed with a tetrafluoro gasket / raw material tape to ensure reliable connection, and place the discharge pipeline 9 on the discharge pipeline support 8 and fix it;

[0123] S2 Place the electronic scale 1 in a suitable position, fix the bracket mechanism 2 on it, and then fix the fire extinguishing device 3 to be tested on the bracket mechanism 2. Observe the pressure value of the first pressure gauge 32 of the gas cylinder 31 on the fire extinguishing device 3 to ensure that the fire extinguishing device 3 is in a normal state for discharge;

[0124] S3 connects one end of the metal hose 7 with the signal feedback device 6 installed at the installation position to the outlet of the container valve 33 on the fire extinguishing device 3, and the other end to the first elbow 91 on the discharge pipeline 9; and installs the signal feedback device 6 at the predetermined position on the metal hose 7.

[0125] S4 will install the spray module 11 according to the spray module diagram (attached). Figure 4 Installation can be carried out according to the design plan, and the number of spray modules can be arranged according to the design plan. The attached nozzles can be installed at the end of the spray module 11. Figure 4 Install the digital pressure gauge 13 at the indicated location, and pay attention to the sealing of the pipeline during the installation process;

[0126] S5 installs the electromagnetic actuator 4 on the container valve 33 and connects the start cable of the electromagnetic actuator 4 to the time relay 5;

[0127] S6 connects the cables of the solenoid valve 93 and the two-zone control electric explosion valve 99 on the discharge pipeline 9 to the time relay 5, preparing to start the simulated discharge process together with the electromagnetic driver 4.

[0128] The above steps complete the preparations for the discharge of fire extinguishing device 3, and the discharge test is ready.

[0129] Fire extinguishing device 3 discharge stage:

[0130] S1 activates electronic scale 1 to prepare to record the real-time weight of fire extinguishing device 3, activates time relay 5, and controls electromagnetic driver 4, electromagnetic valve 93 and two-zone control electric explosion valve 99 to start simultaneously.

[0131] S2 electromagnetic actuator 4 controls container valve 33 to start, and sprays according to the predetermined time. The agent in the fire extinguishing device 3 enters the discharge pipeline 9 through metal hose 7, and passes through solenoid valve 93 and two-zone control electric explosion valve 99 in sequence. Then the agent is sprayed out through discharge module 11. At the same time, it passes through digital display pressure gauge 13 before the last PACK nozzle 114. Digital display pressure gauge 13 can record the pressure of the end discharge in real time.

[0132] The fire extinguishing device 3 of this invention sprays extinguishing agent for 7 seconds every 5 minutes, repeating the spraying process 5 times. After the predetermined number of sprays is completed, the time relay 5 should be turned off. At the same time, to prevent accidental spraying, the electromagnetic actuator 4 should be removed from the container valve 33.

[0133] Data processing and pass / fail determination stage:

[0134] Discharge volume determination: Export the weight value of the fire extinguishing device 3 recorded in the electronic scale 1, calculate the weight of the fire extinguishing agent discharged each time, determine whether the discharge volume meets the expected requirements, and whether there is insufficient or excessive discharge. The discharge time can then be adjusted according to the actual situation.

[0135] Discharge pressure determination: Generate the discharge pressure curve of the fire extinguishing device 3 based on the data recorded in the digital display pressure gauge 13, analyze the maximum discharge pressure, pressure response time, and pressure stable duration of the fire extinguishing device 3 in sequence, and make a determination based on the expected data.

[0136] Consistency determination for multiple discharges:

[0137] Take the continuous discharge of the fire extinguishing agent for 7 seconds for 5 times in this test as the test target. The discharge volume of each discharge should have a tolerance of ±5% from the average value, and the corresponding time difference of each action of the signal feedback device 6 should be ≤0.2s; each discharge should be carried out as expected.

[0138] Qualified determination stage:

[0139] All parameters meeting the requirements simultaneously are determined to be qualified; generate an official test report.

[0140] The above are only examples of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

[0141] Although multiple aspects and embodiments of the present application have been disclosed, other aspects and embodiments will be obvious to those skilled in the art. Without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. The multiple aspects and embodiments disclosed in the present application are only used for illustration and are not intended to limit the present application. The actual protection scope of the present application is subject to the claims.

Claims

1. A fire extinguishing device discharge testing system, comprising: Support and weighing unit, used to fix the fire extinguishing device under test and monitor its weight changes in real time; An automatic control unit is communicatively connected to the starting mechanism of the fire extinguishing device and is used to programmatically control the start and stop sequence of the fire extinguishing device to achieve multiple intermittent discharges. A simulated discharge piping unit, one end of which is connected to the outlet of the fire extinguishing device via a connecting pipe, wherein at least one valve controlled by the automatic control unit is integrated in the connecting pipe; The data acquisition unit includes at least a pressure detection component located at the end of the simulated discharge pipeline unit, used to acquire pressure parameters during the discharge process; The automatic control unit can coordinate the support and weighing unit and the data acquisition unit to achieve systematic testing of the fire extinguishing device's discharge volume, discharge pressure, and stability after multiple discharges.

2. The fire extinguishing device discharge testing system according to claim 1, characterized in that, The support and weighing unit includes a support mechanism, which can be compatible with multiple specifications of fire extinguishing devices by adjusting the size of the supporting components of the support mechanism.

3. The fire extinguishing device discharge testing system according to claim 1 or 2, characterized in that, The automatic control unit includes a programmable timing controller, which is used to preset the duration of a single spray, the spray interval time, and the number of sprays, and to control the starting mechanism of the fire extinguishing device and the valves in the simulated spray pipeline unit.

4. The fire extinguishing device discharge testing system according to claim 1, characterized in that, The simulated discharge pipeline unit is connected to a discharge terminal at its end. The discharge terminal includes multiple nozzles arranged according to the actual protection scenario. The arrangement height and nozzle flow coefficient are set to simulate a specific application environment.

5. The fire extinguishing device discharge testing system according to claim 4, characterized in that, One or more nozzles of the discharge terminal are directed to a simulated fire source device, which includes a heat source generator and sensors, for testing the extinguishing effectiveness of the extinguishing agent under real fire conditions.

6. The fire extinguishing device discharge testing system according to claim 1, characterized in that, The connecting pipeline is equipped with a signal feedback device, which is used to transmit the discharge status signal of the fire extinguishing device to an external monitoring system in real time, so as to realize traceable management of the discharge process.

7. The fire extinguishing device discharge testing system according to claim 1, characterized in that, The automatic control unit is connected to a fire alarm host to realize linkage alarm, data recording and remote monitoring of the spraying process.

8. The fire extinguishing device discharge testing system according to claim 1, characterized in that, The data acquisition unit also includes a weight data processor and a pressure curve generator, used to generate discharge volume curves and pressure-time curves based on real-time weight and pressure data, and to calculate discharge consistency and stability indicators.

9. A method for testing the discharge of a fire extinguishing device, characterized in that, The fire extinguishing device discharge test system as described in any one of claims 1-8 includes the following steps: The fire extinguishing device is fixed to the support and weighing unit; The automatic control unit sets the discharge program, including the timing parameters for multiple intermittent discharges; Upon initiation of the test, the automatic control unit controls the fire extinguishing device and pipeline valves to perform multiple discharges according to a preset program. The weight data during the spraying process is recorded in real time by the support and weighing unit, and the spraying pressure data is recorded in real time by the data acquisition unit. Based on the recorded weight and pressure data, the discharge performance of the fire extinguishing device is analyzed and determined, including discharge volume accuracy, pressure response, and consistency of multiple discharges.

10. The method for testing the discharge of a fire extinguishing device according to claim 9, characterized in that, The analysis steps include calculating the allowable deviation between the discharge volume of each discharge and the average value, as well as the time difference of the signal feedback action, and using the allowable deviation of ±5% and the time difference of ≤0.2s as the qualified judgment criteria for the consistency of multiple discharges.

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