Testing device and aerosol product polymer sheet fire resistance testing system

Abstract

The utility model discloses a test device and an aerosol product polymer sheet fire resistance test system, which comprise a test chamber, an opening and closing door is arranged on the side wall of the test chamber, an aerosol fire extinguishing device is arranged in the test chamber, and the test device is positioned in the test chamber; the test device comprises a test rack, the test rack comprises a weighing unit, a test platform, a fire disc and a fixing frame, the test platform is installed on the upper side of the weighing unit, the fixing frame is installed on the upper side of the test platform, the fire disc is installed in the middle of the upper side of the test platform, and the fixing frame is used for installing polymer sheets. By means of the structure, the actual fire extinguishing environment can be better simulated, and therefore the maximum fire extinguishing capacity of the fire extinguishing device can be more truly verified.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing test devices, in particular to a test device and an aerosol product polymer sheet fire resistance test system. Background Art

[0002] The fire rescue industry standard XF499 specifies that the fire extinguishing model for Class B fire extinguishing tests for hot aerosol fire extinguishing devices simply requires the device to be placed in the test space, with the nozzle facing away from the fuel tray. The tray is then ignited for a 30-second pre-burn, and the device is then manually activated to extinguish the fire. Even if the fire is successfully extinguished, this fire extinguishing model does not truly reflect the device's ability to extinguish fires in real-world conditions. Because hot aerosol fire extinguishing devices are fixed and the fire source is uncertain, actual fires differ from existing aerosol fire extinguishing models. Existing fire extinguishing models typically do not have objects blocking or covering the actual fire source. Actual fire scenes are not simply fire sources and fire extinguishing devices. For example, fires originating from internal equipment or fires caused by battery failures in energy storage cabinets that serve as a collection of high-energy-density batteries are likely to occur. In such fires, the fire extinguishing device may not be directly opposite the fire source, and there may be obstructions or covered fire sources between the fire source and the fire extinguishing device, preventing the aerosol extinguishing agent ejected from the aerosol device from reaching the fire source. Therefore, the actual fire extinguishing environment is much more complex than existing fire extinguishing models. In order to verify the maximum fire extinguishing capability of the fire extinguishing device, it is necessary to design a Class B fire extinguishing system that is closer to actual fires. Utility Model Content

[0003] The technical problem to be solved by the present invention is to solve the problems existing in the above-mentioned background technology and provide a test device and an aerosol product polymer sheet fire resistance test system for verifying the maximum fire extinguishing ability of the fire extinguishing device under complex conditions.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a test device, including a test frame, the test frame includes a weighing unit, a test platform, a fire tray and a fixed frame, the test platform is installed on the upper side of the weighing unit, the fixed frame is installed on the upper side of the test platform, the fire tray is installed in the middle of the upper side of the test platform, and the fixed frame is used to install polymer sheets.

[0005] A baffle is provided at the edge of the test platform.

[0006] A plurality of bayonet holes are symmetrically arranged inside the fixing frame.

[0007] A shielding cover is also included, and the test stand is located below the shielding cover.

[0008] The device further comprises at least one enclosure frame, which surrounds the exterior of the shielding cover and has a bottom supported by a support block.

[0009] There are two enclosure frames, which are stacked up and down and staggered.

[0010] An aerosol product polymer sheet fire resistance test system includes a test chamber and a test device; the side wall of the test chamber is provided with an opening and closing door, and an aerosol fire extinguishing device is installed inside the test chamber; the test device is located inside the test chamber.

[0011] The test chamber is also equipped with an observation window and / or an explosion relief device.

[0012] An oxygen concentration detection device is also installed inside the test chamber.

[0013] The oxygen concentration detection device is installed on a crossbar, and the crossbar is installed on a bracket in an adjustable manner.

[0014] Compared with the prior art, the present invention has the following technical effects:

[0015] 1. The weighing unit of this utility model is used to measure the weight loss of a polymer sheet in real time during the fire extinguishing process. The test platform is used to support the mounting bracket, which is used to mount and secure the polymer sheet during the test. The fire tray is used to place fuel to ignite the polymer sheet above. The weight loss of the polymer sheet is observed in real time on the weighing unit's display screen to determine the fire extinguishing status and whether the fire extinguishing effect meets the requirements.

[0016] 2. The test device of the present invention also includes a shielding cover, and the test frame is located below the shielding cover, simulating the situation where the actual fire source is covered directly above, making the flame and heat more concentrated.

[0017] 3. The test device of the present invention further comprises at least one enclosure frame, which cooperates with the shielding cover to form a semi-open space, simulating a scene where the fire source is blocked and covered.

[0018] 4. The aerosol product polymer sheet fire resistance test system disclosed in the present invention can better simulate the actual fire extinguishing environment, thereby more realistically verifying the maximum fire extinguishing capability of the fire extinguishing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description:

[0020] Figure 1 This is a schematic diagram of the external structure of the test cabin of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the test device of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the shielding cover of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of a polymer sheet installed on the test stand of the utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the test stand of the utility model.

[0025] Reference numerals

[0026] Test chamber 100, opening and closing door 101, observation window 102, explosion relief device 103;

[0027] Test device 200;

[0028] Test stand 210, weighing unit 211, test platform 212, fire tray 213, fixing frame 214, bayonet 215, baffle 216;

[0029] Shielding cover 220;

[0030] Enclosure frame 230, support block 231;

[0031] Oxygen concentration detection device 240, crossbar 242, bracket 241;

[0032] Polymer sheet 250 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] Example 1:

[0035] See also Figure 5A test apparatus 200 includes a test frame 210, which includes a weighing unit 211, a test platform 212, a fire tray 213, and a fixing frame 214. The test platform 212 is mounted above the weighing unit 211, the fixing frame 214 is mounted above the test platform 212, the fire tray 213 is mounted in the middle of the upper side of the test platform 212, and the fixing frame 214 is used to mount a polymer sheet 250. The weighing unit 211 is used to measure the weight loss of the polymer sheet 250 in real time during the fire extinguishing process. The test platform 212 is used to support the fixing frame 214, which is used to mount the polymer sheet 250 during the test. The fire tray 213 is used to place fuel to ignite the polymer sheet 250 located above.

[0036] In a preferred solution, the weighing unit 211 adopts a precision electronic scale, and the display screen of the precision electronic scale is separated from the electronic scale body.

[0037] Furthermore, a baffle 216 is provided at the edge of the test platform 212. By providing the baffle 216, water can be stored on the test platform 212, so that the test platform 212 can be cooled during the test process.

[0038] Furthermore, a plurality of bayonet holes 215 are symmetrically arranged inside the fixing frame 214 to facilitate longitudinal insertion of the polymer sheet 250 through the bayonet holes 215 .

[0039] See also Figure 4 When the polymer sheet 250 is inserted and installed, the two sides can be clamped by multiple metal clips respectively, and the polymer sheet 250 is supported on the fixing frame 214 by the metal clips.

[0040] Example 2:

[0041] Based on Example 1, see Figure 3 The test device 200 further includes a shielding cover 220 , and the test frame 210 is located below the shielding cover 220 , simulating the situation where the actual fire source is covered directly above, so that the flame and heat are more concentrated.

[0042] In practice, the shielding cover 220 may be a metal plate, and a plurality of metal supporting legs are provided on the lower side of the metal plate, and the shielding cover 220 is supported by the plurality of metal supporting legs.

[0043] Example 3:

[0044] Based on Example 2, see Figure 2 The test device 200 further includes at least one enclosure frame 230, which surrounds the exterior of the shielding cover 220. The bottom of the enclosure frame 230 is supported by support blocks 231. The enclosure frame 230 and the shielding cover 220 cooperate to form a semi-open space, simulating a scenario where the fire source is blocked and covered.

[0045] Furthermore, in this embodiment, two enclosure frames 230 are provided, and the two enclosure frames 230 are stacked up and down and arranged alternately.

[0046] Example 4:

[0047] See also Figure 1 、 2 An aerosol product polymer sheet fire resistance test system includes a test chamber 100 and a test device 200. The test chamber 100 has a sidewall with an opening and closing door 101, and an aerosol fire extinguishing device is installed inside the test chamber 100. The test device 200 is located inside the test chamber 100. The opening and closing door 101 is used for the entry of test personnel and test materials.

[0048] In this embodiment, the display screen of the weighing unit 211 is located outside the test chamber 100. The display screen is connected to the electronic scale body via a cable, which is fireproof. The aerosol fire extinguishing device is remotely controlled and activated using an electronic ignition head.

[0049] Furthermore, the test chamber 100 is equipped with an observation window 102 and / or an explosion relief device 103. Observation window 102 is used for observation and is made of fire-resistant tempered glass. Explosion relief device 103 is used to prevent explosions from deflagration within the test chamber 100 and relieves pressure in the event of a deflagration. Explosion relief device 103 is conventional technology, for example, employing the structure disclosed in CN216862508U.

[0050] Furthermore, an oxygen concentration detection device 240 is installed inside the test chamber 100. This device is used to detect the oxygen concentration inside the test chamber 100 before testing. The device 240 includes a detector and a main unit. During operation, the detector is mounted high inside the test chamber 100 and connected to the main unit via a cable. The main unit is located outside the test chamber 100, and the cable is protected from fire.

[0051] Further, see Figure 2 The oxygen concentration detection device 240 is mounted on a crossbar 242, which is adjustable up and down on a bracket 241. With the above structure, the height of the oxygen concentration detection device 240 can be adjusted according to different test standards, thereby detecting the oxygen concentration in spaces of different heights.

[0052] Preferably, see Figure 2 The bracket 241 is made of industrial aluminum profile, and the cross bar 242 is also made of industrial aluminum profile. The cross bar 242 is installed on the vertical pole of the bracket 241 with bolts through the matching angle code.

[0053] The working process or principle of this utility model is as follows:

[0054] During the test, the polymer sheet 250 is first mounted on the test frame 210, fuel is added to the fire tray 213, and the shield 220 and enclosure frame 230 are installed and placed. The tester then ignites the fire tray 213 and quickly evacuates the test chamber 100. At this time, the door 101 is open to ensure an aerobic environment inside the test chamber 100.

[0055] After burning for several seconds, the polymer sheet 250 is ignited, the door 101 is closed, and the aerosol fire extinguishing device inside the test chamber 100 is activated to extinguish the fire. The fire extinguishing needs to be completed in a relatively short time.

[0056] During the fire extinguishing process, since the visibility inside the test chamber 100 is very poor, the weight loss of the polymer sheet 250 is observed in real time through the display screen of the weighing unit 211 to judge the fire extinguishing status and whether the fire extinguishing effect meets the requirements, thereby more realistically verifying the maximum fire extinguishing capability of the fire extinguishing device.

Claims

1. A test device (200), characterized in that: The invention comprises a test frame (210), wherein the test frame (210) comprises a weighing unit (211), a test platform (212), a fire tray (213) and a fixing frame (214), wherein the test platform (212) is mounted on the upper side of the weighing unit (211), the fixing frame (214) is mounted on the upper side of the test platform (212), the fire tray (213) is mounted in the middle of the upper side of the test platform (212), and the fixing frame (214) is used for mounting a polymer sheet (250).

2. A test device (200) according to claim 1, characterized in that: A baffle (216) is provided at the edge of the test platform (212).

3. A test device (200) according to claim 1, characterized in that: A plurality of bayonet holes (215) are symmetrically arranged inside the fixing frame (214).

4. A test device (200) according to claim 1, characterized in that: The test frame (210) is located below the shielding cover (220).

5. A test device (200) according to claim 4, characterized in that: It also includes at least one enclosure frame (230), the enclosure frame (230) surrounding the outside of the shielding cover (220), and the bottom of the enclosure frame (230) is supported by a support block (231).

6. A test device (200) according to claim 5, characterized in that: Two enclosure frames (230) are provided, and the two enclosure frames (230) are stacked up and down and arranged in a staggered manner.

7. An aerosol product polymer sheet fire resistance test system, characterized by: The invention comprises a test chamber (100) and a test device (200) according to any one of claims 1 to 6; the side wall of the test chamber (100) is provided with an opening and closing door (101); an aerosol fire extinguishing device is installed inside the test chamber (100); and the test device (200) is located inside the test chamber (100).

8. The aerosol product polymer sheet fire resistance test system according to claim 7, characterized in that: The test chamber (100) is further equipped with an observation window (102) and / or an explosion relief device (103).

9. The aerosol product polymer sheet fire resistance test system according to claim 7, characterized in that: An oxygen concentration detection device (240) is also installed inside the test chamber (100).

10. The aerosol product polymer sheet fire resistance test system according to claim 9, characterized in that: The oxygen concentration detection device (240) is mounted on a crossbar (242), and the crossbar (242) is mounted on a bracket (241) in an adjustable vertical position.

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