Goods shelf fire test system

Abstract

The utility model provides a goods shelf fire test system, and belongs to the technical field of fire automatic alarm system early warning and monitoring, and the system comprises a fixed goods shelf fire test device which is used for constructing a fixed goods shelf to be subjected to a fire test; the optical smoke density tester is used for acquiring an optical smoke density value of smoke in a fire test process; the video image acquisition module is used for acquiring a video image of the fixed shelf fire test device in the fire test process; the temperature field acquisition module is used for acquiring the temperature of the ignition point of the fire scene and the space temperature in the fire test process; the air-breathing smoke-sensing fire test module, the pipeline-type shelf fire detection module and the point-type smoke-sensing fire detection module are respectively used for collecting smoke concentrations in different time periods. The system can more accurately simulate the whole process of the goods shelf fire, shortens the test period, and reduces the test cost and the risk coefficient.

Description

Technical Field

[0001] This application belongs to the field of fire alarm system early warning and monitoring technology, specifically relating to a shelf fire test system. Background Technology

[0002] With the rapid development of the modern warehousing and logistics industry, the scale and complexity of racking systems are constantly increasing, and the risk of fire is also rising. Once a racking fire occurs, it often causes huge property losses and casualties. Therefore, the prevention and research of racking fires are particularly important.

[0003] Traditional methods for studying shelf fires primarily involve observing and analyzing the fire process through actual fire experiments or full-scale simulations. However, these methods have many limitations, such as long testing cycles, high costs, significant safety risks, and difficulty in precisely controlling test conditions. Therefore, researchers have begun to explore new testing methods and technologies to better simulate and analyze shelf fire behavior. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application proposes a shelf fire testing system, comprising:

[0005] Fixed rack fire testing device, used to construct fixed racks for fire testing;

[0006] An optical smoke density meter is used to obtain the optical smoke density value of smoke during fire tests.

[0007] The video image acquisition module is used to acquire video images during the fire test of the fixed rack.

[0008] The temperature field acquisition module is used to collect the temperature at the ignition point of the fire and the ambient temperature during the fire test.

[0009] The aspirating smoke detection fire test module is used to collect smoke concentration during the first time period at the start of a fire test;

[0010] The pipeline rack fire detection module is used to collect smoke concentration during the second time period at the start of a fire test;

[0011] The point-type smoke detection module is used to collect smoke concentration during the third time period at the start of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

[0012] The fixed shelf fire test device includes one or more sets of shelves. Each set of shelves is equipped with a layer of beams and wire mesh panels at a first predetermined distance, and each layer of wire mesh panels is the upper layer panel.

[0013] The optical smoke density tester includes at least two units, one of which is installed at half the height of the fixed shelf fire test device, and the other is installed at the top of the fixed shelf fire test device.

[0014] The video image acquisition module includes at least two modules: one module is used to acquire frontal video images of the fixed-shelf fire testing device during the fire test, and the other module is used to acquire rear video images of the fixed-shelf fire testing device during the fire test.

[0015] The temperature field acquisition module includes a high-temperature thermocouple and an air-temperature thermocouple. The high-temperature thermocouple is installed in the fire field of the fire test to collect the temperature at the center of the fire. The air-temperature thermocouple is installed on different mesh shelves of the fixed shelf fire test device to collect the spatial temperature at different locations during the fire test.

[0016] The aspirating smoke detection fire test module includes multiple smoke collection units. The smoke collection units collect the smoke concentration in the first time period at the start of the fire test through sampling holes in a pre-arranged pipe network. The pre-arranged pipe network is a double or four-pipe network pre-arranged on a fixed shelf fire test device, and sampling holes are opened at a second pre-set distance in each vertical pipe.

[0017] The pipeline rack fire detection module includes multiple first detectors. The first detectors collect smoke concentration in a second time period at the start of the fire test through sampling holes in a pre-arranged pipeline network. One first detector is used in each pipeline, and the sampling pipeline networks between the first detectors are isolated from each other.

[0018] The point-type smoke fire detection module includes two sets of second detectors. The first set of second detectors is installed at 1 / 2 height of the fixed shelf fire test device, and the second set of second detectors is installed at the top of the fixed shelf fire test device.

[0019] Beneficial effects:

[0020] This application proposes a shelf fire testing system that can more accurately simulate the entire process of a shelf fire, shorten the testing cycle, reduce testing costs and risk factors, and can collect various data in real time and accurately during the fire process, providing reliable data assurance for shelf fire research. Attached Figure Description

[0021] Figure 1 A schematic diagram of a shelf fire test system according to an embodiment of this application;

[0022] Figure 2Top view of the shelf in an embodiment of this application;

[0023] Figure 3 Elevation view of the shelf according to an embodiment of this application;

[0024] Figure 4 Installation location diagram of the optical smoke density tester according to an embodiment of this application;

[0025] Figure 5 Layout diagram of the video image acquisition module in this application embodiment;

[0026] Figure 6 Location diagram of the temperature field acquisition module in this embodiment;

[0027] Figure 7 Layout diagram of the aspirating smoke detector fire test module in this application embodiment;

[0028] Figure 8 The system architecture of the pipeline rack fire detection module in this application embodiment;

[0029] Figure 9 Piping layout diagram of the piped rack fire detection module according to an embodiment of this application;

[0030] Figure 10 Piping layout diagram of the point-type smoke detection module in this application embodiment;

[0031] Figure 11 TF5A / B fuel arrangement diagram of an embodiment of this application;

[0032] Figure 12 Comparison of the light reduction coefficients of smoke from two n-heptane test fires in this application;

[0033] Among them, 1-crossbeam, 2-mesh plate, 3-column, 4-optical smoke density tester, 5-video image acquisition module, 6-temperature field acquisition module, 7-sampling hole, 8-pipeline, 9-first detector, 10-end cap, 11-second detector, 12-container, 13-container base. Detailed Implementation

[0034] The specific implementation methods of this application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] This application proposes a shelf fire testing system. By reducing the scale of the test, lowering testing costs and safety risks, and utilizing the principle of similarity, it simulates the conditions and processes of a real shelf fire as closely as possible. Through a carefully designed test device and control system, researchers can precisely control various fire parameters, such as temperature and smoke density, to study the spread patterns and characteristics of shelf fires under different conditions. Meanwhile, data acquisition methods play a crucial role in shelf fire testing. With the continuous development of sensor technology, image processing technology, and computer technology, researchers can collect various data during the fire process in real time and accurately, such as temperature, smoke concentration, and flame images. Through the analysis and processing of this data, in-depth understanding of the combustion characteristics, spread patterns, and effectiveness of fire extinguishing measures of shelf fires can be obtained.

[0036] Therefore, a shelf fire testing system is developed to meet the urgent need for shelf fire prevention and research. It combines the latest advancements and technologies in fire science research to better simulate and analyze shelf fire behavior, providing strong support for improving the fire prevention capabilities of storage facilities.

[0037] Example 1:

[0038] This embodiment proposes a shelf fire testing system, such as... Figure 1 As shown, it includes:

[0039] Fixed rack fire testing device, used to construct fixed racks for fire testing;

[0040] An optical smoke density meter is used to obtain the optical smoke density value of smoke during fire tests.

[0041] The video image acquisition module is used to acquire video images during the fire test of the fixed rack.

[0042] The temperature field acquisition module is used to collect the temperature at the ignition point of the fire and the ambient temperature during the fire test.

[0043] The aspirating smoke detection fire test module is used to collect smoke concentration during the first time period at the start of a fire test;

[0044] The pipeline rack fire detection module is used to collect smoke concentration during the second time period at the start of a fire test;

[0045] The point-type smoke detection module is used to collect smoke concentration during the third time period at the start of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

[0046] In this embodiment, the first time period at the start of the fire test is the very early stage of the fire, which should be earlier than the second time period in chronological order. The second time period is also the early stage of the fire, which should be earlier than the third time period in chronological order. The third time period is also the early stage of the fire, but later than the second time period. A shelf fire testing system can realistically reproduce the scene of a shelf fire, obtain the fire smoke spread pattern, study the technical parameters such as the arrangement of shelf fire detector pipelines, sampling hole positions, and hole diameters, determine the fire detection location and detection sensitivity, and provide basic support for the technological development, engineering design, and installation technology of shelf fire detectors.

[0047] The fixed shelf fire test device includes one or more sets of shelves. Each set of shelves is equipped with a layer of beams 1 and mesh shelves 2 at a first predetermined distance. Each layer of mesh shelves 2 is the upper shelf.

[0048] In the specific implementation, based on the floor plan of the large-space fire laboratory, two sets of shelves were designed, and their top view is as follows. Figure 2 As shown in the diagram. Shelf group A is 3m long and 1m wide; shelf group B is 6m long and 1m wide. Elevation drawings of both shelving groups are shown below. Figure 3 As shown, Group A shelves are 8m high, with one layer of beams 1 and wire mesh shelves 2 installed every 1m (in this embodiment, the first preset distance is 1m), for a total of 7 layers of wire mesh shelves 2. Group B shelves are 8m high at their highest point, with one layer of beams 1 and wire mesh shelves 2 installed every 1m, for a total of 7 layers of wire mesh shelves 2. Each layer of wire mesh shelves 2 is designed as a man-access shelf to facilitate the installation of data collection equipment. Each shelf also includes uprights 3 for support.

[0049] The optical smoke density tester 4 includes at least two units, one of which is installed at 1 / 2 height of the fixed shelf fire test device, and the other of which is installed at the top of the fixed shelf fire test device.

[0050] In this embodiment, the optical smoke density tester 4 is an instrument used to test optical smoke density values. This device, model Lorenz AMI, measures smoke concentration based on the principle that the light radiation energy attenuates exponentially after a light beam is subjected to smoke particles. The device uses a contrast light method, measuring the distance the jet passes through the absorption point, and then projecting it parallel to the measuring light sensor via a reflector, thus passing through the absorption point again. In addition to the measuring light, a contrast light beam is also detected to compensate for changes in the intensity of the measuring light source. Two sets of the optical smoke density tester 4 are installed on the shelf, and their specific installation locations are as follows... Figure 4 As shown, one optical smoke density tester 4 is installed at 4m on the shelf, and another optical smoke density tester 4 is installed at 8m.

[0051] Smoke concentration is measured using the principle that light radiation energy decays exponentially. The attenuation coefficient *m* is calculated as follows:

[0052] m=(10 / d)×1g(p0 / p)

[0053] Wherein, the tolerance is m·5%+0.02dB / m, m is the light reduction coefficient in dB / m, d is the optical measurement length of the test smoke in m, p0 is the radiation power received in smoke-free conditions in W, and p is the radiation power received in smoke in W.

[0054] The video image acquisition module 5 includes at least two modules: one module is used to acquire a front video image of the fixed shelf fire test device during the fire test, and the other module is used to acquire a rear video image of the fixed shelf fire test device during the fire test.

[0055] In this embodiment, the video image acquisition module 5 consists of key components such as a Sony high-definition camera, an image sensor, a data processing unit, and a transmission interface, which are respectively arranged on the east and west walls of the laboratory, at heights of 4m and 8m above the ground. Figure 5 As shown, it can capture various situations in the laboratory from all angles and perspectives, accurately recording everything from complex experimental procedures to the operating status of instruments and equipment. Its high frame rate and high resolution ensure that no critical moment is missed, even in rapidly changing experimental scenarios.

[0056] The temperature field acquisition module 6 includes a high-temperature thermocouple and an air-temperature thermocouple. The high-temperature thermocouple is installed in the fire field of the fire test to collect the temperature at the center of the fire and the space temperature. The air-temperature thermocouple is installed on different mesh shelves 2 of the fixed shelf fire test device to collect the space temperature at different locations during the fire test.

[0057] In this embodiment, the temperature field acquisition module 6 consists of a control unit, high-temperature thermocouples, and air-temperature thermocouples. The control unit is mainly used to detect the temperature at the ignition point of the fire at the test site. Utilizing its built-in data acquisition unit, it completes the acquisition of temperature information data at the test site and transmits the temperature data to the data processing module via an interface circuit to complete the temperature information acquisition task. The high-temperature thermocouples are arranged in the fire field at the test site to test the temperature at the center of the fire. The air-temperature thermocouples are arranged on different shelves of the shelf to test the temperature at different locations, as shown in the diagram below. Figure 6 As shown.

[0058] The aspirating smoke fire test module includes multiple smoke collection units. The smoke collection units collect the smoke concentration in the first time period at the start of the fire test through sampling holes 7 in a pre-arranged pipe network. The pre-arranged pipe network is a pipe network with two or four pipes 8 pre-arranged on a fixed shelf fire test device, and sampling holes 7 are opened at a second pre-set distance in each vertical pipe.

[0059] In this embodiment, the aspirating smoke detector fire testing module consists of an aspirating smoke detector fire detection and control host and a sampling pipeline network. The control host comprises a suction pump, a smoke collection unit, a data analysis unit, and an alarm device. Generally, the control host for the aspirating smoke detector fire testing module uses either a dual-pipeline (8 lines) or a quad-pipeline (8 lines) configuration. The number of pipes is selected based on the actual shelving scenario. The pipeline network layout is as follows: Figure 7 As shown, air pumps with openings at 4m and 8m in each vertical pipe draw air samples from the monitored area through a sampling network and deliver them to the detection unit. Once the system determines that the smoke concentration exceeds a preset safety threshold, the alarm device will immediately issue an audible and visual alarm to alert relevant personnel. Simultaneously, the system also has a linkage function with the fire control system, enabling it to automatically activate fire extinguishing equipment or take other emergency measures in an emergency.

[0060] The pipeline-type rack fire detection module includes multiple first detectors 9. The smoke concentration is collected in the sampling holes 7 in the pre-arranged pipeline network during the second time period at the start of the fire test through the first detectors 9. One first detector is used in each pipeline, and the sampling pipeline networks between the first detectors 9 are isolated from each other.

[0061] In this embodiment, the fire detection module for the tubular shelving mainly consists of a fire detection host and its detection tubing. The host performs monitoring functions but does not have sensing capabilities. The host outputs alarm signals to a dedicated fire alarm controller. Multiple first detectors 9 communicate with the host via a bus, and their architecture is as follows: Figure 8 As shown. It features low cost to prevent an increase in overall system cost, and each detector is only responsible for detection within a small area, serving as a positioning component. The sampling networks between each first detector 9 are isolated from each other, and their arrangement is as follows. Figure 9 As shown, an end cap 10 is installed at the end of the tube.

[0062] The point-type smoke fire detection module includes two sets of second detectors 11. The first set of second detectors 11 is installed at 1 / 2 height of the fixed shelf fire test device, and the second set of second detectors 11 is installed at the top of the fixed shelf fire test device.

[0063] In this embodiment, the point-type smoke detection module consists of a fire alarm controller and photoelectric point-type smoke detectors. Seven second detectors 11 are installed at a distance of 4m on the shelf, and seven more second detectors 11 are installed at a distance of 8m. Figure 10 As shown. The detector is primarily used to detect smoke concentration at the test site. The data processing unit collects and analyzes smoke concentration data, and transmits the relevant data to the control center via a signal transmission circuit, thus completing the smoke concentration detection task. The second detector 11 can sensitively sense the presence of smoke particles and convert them into electrical signals. The data processing unit processes and calculates these electrical signals to determine whether the smoke concentration reaches a preset alarm threshold. When the threshold is reached or exceeded, a fire alarm signal is sent to the fire alarm controller. The controller then determines whether the alarm is a real fire.

[0064] Table 1 compares the fuel, heating plate, arrangement, heating rate, and test termination conditions of the national standard test fire SH4 (n-heptane open flame) and the EN 54-20 test fire (small-sized n-heptane open flame) TF5A / B.

[0065] Table 1 Comparison of SH4 and TF5A / B

[0066]

[0067] For field tests of "standard test fire" and "scaled-down test fire" (fuel 300ml-TF5B), the smoke light reduction coefficients of the two test fires were compared as follows: Figure 12 As shown. (Through) Figure 12 Analysis shows that the smoke concentration of the "scaled-down test fire" (200ml fuel fire) is the lowest, with a light reduction coefficient of less than 0.1dB / m, and none of the three fire detectors alarm. The smoke concentration of the "scaled-down test fire" (300ml fuel fire) is lower than that of the "standard test fire", with a light reduction coefficient of less than 0.2dB / m. The light reduction coefficient of the "standard test fire" can reach the highest, which can reach 0.6 to 0.8 (dB / m).

[0068] This application proposes a shelf fire testing system, which belongs to the following funded project: Early and Accurate Identification Technology and Demonstration of Fire Signs in Public Buildings (Project No.: 2021YFC3001600). The system employs a fixed shelf fire testing device to construct the shelf to be tested in a fire; uses an optical smoke density meter to acquire the optical smoke density value during the fire test; uses a video image acquisition module to acquire video images of the fixed shelf fire testing device during the fire test; uses a temperature field acquisition module to acquire the temperature at the ignition point of the fire and the ambient temperature during the fire test; uses an aspirating smoke detection fire testing module to acquire smoke concentration in the first time period at the start of the fire test; uses a pipeline shelf fire detection module to acquire smoke concentration in the second time period at the start of the fire test; and uses a point-type smoke detection fire detection module to acquire smoke concentration in the third time period at the start of the fire test. This system can more accurately simulate the entire process of a shelf fire, shorten the testing cycle, reduce testing costs and risk factors, and can accurately acquire various data during the fire process in real time, providing reliable data assurance for shelf fire research.

[0069] Example 2:

[0070] This embodiment proposes a method for acquiring test data in a shelf fire test, which is implemented using the shelf fire test system described in Embodiment 1, including:

[0071] The optical smoke density value of the smoke was obtained during the fire test;

[0072] Video images of the fixed-shelf fire testing device were captured during the fire test.

[0073] Temperature at the ignition point and ambient temperature during the fire test;

[0074] Smoke concentration was collected during the first time period at the start of the fire test;

[0075] Smoke concentration was collected during the second time period at the start of the fire test;

[0076] Smoke concentration was collected during the third time period at the start of the fire test, with the first time period preceding the second time period, and the second time period preceding the third time period.

[0077] The method for collecting test data from the shelf fire test also includes:

[0078] The optical smoke density value, video images, temperature at the ignition point of the fire, ambient temperature, smoke concentration in the first time period, smoke concentration in the second time period, and smoke concentration in the third time period are processed and converted.

[0079] The processed and transformed results are sent to the analysis and testing terminal.

[0080] In this embodiment, a method for collecting test data during a shelf fire test is described, and the collected information is shown in Table 2:

[0081] Table 2: Data Collection Table

[0082]

[0083] The collected optical smoke density, smoke concentration, and temperature information are converted into digital signals and transmitted to the data acquisition, analysis, and testing terminal via wired transmission. The terminal then performs tasks such as storing, recording, and displaying the relevant data.

[0084] (1) Data Acquisition Stage

[0085] Optical smoke density information acquisition:

[0086] The optical smoke density value of smoke was measured using an optical smoke density meter (model Lorenz AMI). This device measures smoke concentration based on the principle that the light radiation energy decays exponentially after a light beam is subjected to smoke particles. It employs a contrast light method, measuring the distance the jet travels through the absorption field, and then projects the light back parallel to the measuring light sensor via a reflector, thus passing through the absorption field again. In addition to the measuring light, a contrast light beam is also detected to compensate for changes in the intensity of the measuring light source.

[0087] Smoke concentration information collection:

[0088] The aspirating smoke detector fire testing module consists of a main component including an air intake pump, sampling piping network, smoke detectors, a data analysis unit, and an alarm device. It features a dual-pipeline layout, with openings at 4m and 8m in each vertical pipe. The air intake pump draws air samples from the monitored area through the sampling piping network and delivers them to the smoke detectors. Once the system determines that the smoke concentration exceeds a preset safety threshold, the alarm device immediately issues an audible and visual alarm to alert relevant personnel. Simultaneously, the system also has a linkage function with the fire control system, enabling automatic activation of fire extinguishing equipment or other emergency measures in case of emergencies.

[0089] Point-type smoke fire detection module:

[0090] It consists of smoke detection sensors, a data processing unit, and a signal transmission circuit. Seven sensors are installed at a distance of 4 meters from the shelf, and seven are installed at a distance of 8 meters. The smoke detection sensors are mainly used to detect the smoke concentration in the environment. The data processing unit collects and analyzes the smoke concentration information, and the signal transmission circuit transmits the relevant data information to the control center to complete the smoke concentration detection task.

[0091] Temperature Information Acquisition: The temperature field acquisition module consists of a control unit, high-temperature thermocouples, and air-temperature thermocouples. After the test fire is ignited, the control unit powers on and communicates with the thermocouple array to acquire real-time temperature data at the test site. The control unit then stores the acquired data. The thermocouple array measures the temperature at different locations. The control unit's data acquisition unit collects the temperature data and transmits it to the data processing module via its internal interface circuit, completing the temperature information acquisition task.

[0092] Video image information acquisition: The video image acquisition module consists of key components such as a Sony high-definition camera, image sensor, data processing unit and transmission interface, which are arranged on the east and west walls of the laboratory, at heights of 4m and 8m above the ground, respectively, and can collect various situations in the laboratory from all directions and multiple angles.

[0093] (2) Data processing stage

[0094] In this stage, the data acquired during the data acquisition phase needs to be converted and organized. Based on the protocol formats of each acquisition sensor, through a series of data processing procedures such as mathematical operations and code conversion, the acquired data is transformed into a form that accurately expresses the actual measured values ​​of various parameters related to shelf fires (such as optical smoke density, smoke concentration, temperature, and fire size), facilitating subsequent analysis and application.

[0095] (3) Data transmission stage

[0096] This stage primarily involves transmitting the data collected and processed in the first two stages to a visualization data analysis and testing terminal (e.g., a ground control host) via a specific transmission channel. The specific transmission method and path can be designed based on the actual equipment and system configuration to ensure stable and rapid data transmission, enabling relevant personnel to promptly obtain and analyze the data from the shelf fire experiment.

[0097] The various embodiments in this application are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0098] The scope of protection of this application is not limited to the embodiments described above. Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from the scope and spirit of this disclosure. If such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, then the intent of this disclosure also includes such modifications and variations.

Claims

1. A shelf fire testing system, characterized in that, include: Fixed rack fire testing device, used to construct fixed racks for fire testing; An optical smoke density meter is used to obtain the optical smoke density value of smoke during fire tests. The video image acquisition module is used to acquire video images during the fire test of the fixed rack. The temperature field acquisition module is used to collect the temperature at the ignition point of the fire and the ambient temperature during the fire test. The aspirating smoke detection fire test module is used to collect smoke concentration during the first time period at the start of a fire test; The pipeline rack fire detection module is used to collect smoke concentration during the second time period at the start of a fire test; The point-type smoke detection module is used to collect smoke concentration during the third time period at the start of the fire test, wherein the first time period is earlier than the second time period, and the second time period is earlier than the third time period.

2. The shelf fire testing system according to claim 1, characterized in that, The fixed shelf fire test device includes one or more sets of shelves. Each set of shelves is equipped with a layer of beams and wire mesh panels at a first predetermined distance, and each layer of wire mesh panels is the upper layer panel.

3. The shelf fire testing system according to claim 1, characterized in that, The optical smoke density tester includes at least two units, one of which is installed at half the height of the fixed shelf fire test device, and the other is installed at the top of the fixed shelf fire test device.

4. The shelf fire testing system according to claim 1, characterized in that, The video image acquisition module includes at least two modules: one module is used to acquire frontal video images of the fixed-shelf fire testing device during the fire test, and the other module is used to acquire rear video images of the fixed-shelf fire testing device during the fire test.

5. The shelf fire testing system according to claim 1, characterized in that, The temperature field acquisition module includes a high-temperature thermocouple and an air-temperature thermocouple. The high-temperature thermocouple is installed in the fire field of the fire test to collect the temperature at the center of the fire. The air-temperature thermocouple is installed on different mesh shelves of the fixed shelf fire test device to collect the spatial temperature at different locations during the fire test.

6. The shelf fire testing system according to claim 1, characterized in that, The aspirating smoke detection fire test module includes multiple smoke collection units. The smoke collection units collect the smoke concentration in the first time period at the start of the fire test through sampling holes in a pre-arranged pipe network. The pre-arranged pipe network is a double or four-pipe network pre-arranged on a fixed shelf fire test device, and sampling holes are opened at a second pre-set distance in each vertical pipe.

7. The shelf fire testing system according to claim 1, characterized in that, The pipeline rack fire detection module includes multiple first detectors. The first detectors collect smoke concentration in a second time period at the start of the fire test through sampling holes in a pre-arranged pipeline network. One first detector is used in each pipeline, and the sampling pipeline networks between the first detectors are isolated from each other.

8. The shelf fire testing system according to claim 1, characterized in that, The point-type smoke fire detection module includes two sets of second detectors. The first set of second detectors is installed at 1 / 2 height of the fixed shelf fire test device, and the second set of second detectors is installed at the top of the fixed shelf fire test device.

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