CN-117517558-B - Fire resistance test method for marine wind distributor

CN117517558BCN 117517558 BCN117517558 BCN 117517558BCN-117517558-B

Abstract

The invention discloses a fire resistance test method of a marine air distributor, which relates to the technical field of fire safety, and comprises the steps of preparing an experiment, installing a sample, setting experiment conditions, carrying out flame contact test, carrying out heat radiation test, evaluating combustion performance, analyzing and reporting results, making a test method according to the marine air distributor, filling the blank of the test method of the air distributor in the marine industry, observing and recording the combustion condition of the air distributor sample under the flame contact and the fire resistance under the heat radiation through the combustion performance evaluation step, evaluating according to evaluation standards, effectively evaluating the fire resistance of the air distributor, ensuring the fire safety of the air distributor when the air distributor is used on a ship, installing the air distributor on a ceiling, ensuring the air distributor and the ceiling to form a sample box body by combining the air distributor sample, enabling the air distributor sample to be compatible with the marine ceiling test device, setting test environment, ensuring that the test result is closer to the actual application condition, and ensuring the fire resistance test result of the marine air distributor to be more accurate and more reliable.

Inventors

HE GUISHENG
LAI HONGYU
HU JINJIN
Weng Xuejiang
WANG YONG
QIAN JUN
HAO YANFEI
WU YANPENG

Assignees

中国船级社上海规范研究所

Dates

Publication Date: 20260512
Application Date: 20231030

Claims (9)

1. The fire resistance test method of the marine wind distributor is characterized by comprising the following steps of: S1, preparing an experiment, preparing a prototype wind distributor for a ship as a sample, preparing experiment equipment and instruments and selecting proper experimental materials; S2, installing a sample, namely installing a prototype air distributor on a ceiling, and combining the ceiling and the prototype air distributor to form an air distributor sample box body so that an air distributor sample is compatible with a marine ceiling test device; S3, setting experimental conditions, setting temperature and humidity of a laboratory, simulating the internal environment of a ship, setting air flow and speed, and simulating the normal working state of a wind distributor; S4, a flame contact test is carried out, a fire source is ignited, the flame is contacted with the surface of the air distribution device sample, and the combustion condition of the flame, the combustion degree of the air distribution device sample and the development condition of the fire are observed and recorded; s5, a heat radiation test, namely placing a heat radiometer at a position of a standard distance of the marine wind distribution device, measuring heat radiation intensity, and recording and evaluating the fire resistance of the marine wind distribution device under heat radiation; S6, evaluating the combustion performance of the marine air distributor, wherein when the test reaches the preset time, the combustion performance of the marine air distributor is evaluated, and the fire resistance of the marine air distributor is evaluated by observing the combustion condition of a sample and residues after combustion, and the evaluation standards comprise a B15-level air distributor and a B0-level air distributor; And S7, analyzing and reporting the result, and analyzing the experimental result to judge whether the fireproof performance of the marine wind distributor meets the requirements.
2. The fire resistance test method of the marine wind distributor according to claim 1, wherein the wind distributor is installed according to the step S2, the installation mode of the wind distributor and the ceiling is an actual installation mode, and when the wind distributor is installed, the air outlet is positioned on the fire facing side of the ceiling, and the box body of the wind distributor is positioned on the back fire facing side of the ceiling.
3. The method for testing fire resistance of marine wind distributor according to claim 2, wherein the ceiling structure is formed by stacking galvanized steel sheets with thickness of 0.7mm, rock sheets with thickness of 28.6mm and galvanized steel sheets with thickness of 0.7mm, wherein the volume weight of the rock sheets is 120kg/m 3 .
4. The method for testing the fire resistance of marine wind distributors according to claim 3, wherein the ceiling comprises a plurality of wind distributors, the distance between every two adjacent wind distributors is larger than 200mm, and the distance between each wind distributor and the edge of the ceiling is larger than 200mm.
5. The fire resistance test method of marine wind distributor according to claim 1, wherein 5 thermocouples are arranged at the center of 4 1/4 areas on the back surface of the wind distributor sample box body and the center of the whole back surface according to the step S2 for measuring the average temperature rise of the wind distributor, and thermocouples are respectively arranged on the surfaces of ventilation pipes sleeved at the center positions of four side surfaces of the box body and the air inlets and 25mm away from the box body, and if the air inlets are arranged on the side surfaces of the box body, the positions of the thermocouples are offset by 100mm from the center positions of the side surfaces of the box body.
6. The fire resistance test method of the marine wind distributor according to claim 1, wherein the temperature and the humidity of the test conditions are set, the temperature in a test room is controlled to be between 20 and 40 ℃, and the humidity is controlled to be between 45 and 75 percent; wherein the flame temperature is controlled to be 800 ℃ to 1000 ℃ and the test time is 30 minutes to 120 minutes.
7. The fire resistance test method of marine wind distributor according to claim 1, wherein the test of the wind distributor sample is performed by selecting vertical flame according to the flame contact test in the step S4; where the standing flame is in the form of a vertically upwardly burning flame, by contacting the standing flame to the surface of the sample of the air distributor and maintaining it for the duration of the test.
8. The method for fire resistance test of marine wind distributor according to claim 1, wherein the heat radiation test according to step S5 is performed by starting a heat radiation meter and measuring, recording the value of the heat radiation intensity, displaying the result as the heat radiation power received per unit area, performing the measurement of the heat radiation intensity a plurality of times, and calculating the average value.
9. The marine wind distributor fire resistance test method according to claim 1, wherein: the evaluation criterion of the marine wind distributor according to the step S6, wherein, The evaluation standard of the B15-level air distributor is that the air distributor sample has no flame penetration and complete structure through a standard fire resistance test for 30min, the average temperature of the back surface of the air distributor sample is not higher than 140 ℃ higher than the initial temperature at the end of the test for 15min, and the temperature of any point of the back surface of the air distributor sample is not higher than 225 ℃ higher than the initial temperature; the evaluation standard of the B0-class air distributor is that the test sample is subjected to a standard fire resistance test for 30 minutes, has no flame penetration and has a complete structure.

Description

Fire resistance test method for marine wind distributor Technical Field The invention relates to the technical field of fire safety, in particular to a fire resistance test method of a marine wind distributor. Background The marine air distributor is equipment for distributing air from an air conditioner in a cabin to be uniformly mixed with indoor air and form proper air flow speed, is an end device of an air conditioning ventilation system, can be allowed to be used on a ship only after a pattern approval certificate is obtained based on a pattern test, and cannot effectively evaluate fire resistance because the marine air distributor lacks corresponding pattern test standards, is difficult to ensure fire safety of the air distributor used on the ship, and prevents wide application of the marine air distributor. At present, no type test method for the wind distributor exists in the ship industry, so that a test method suitable for the wind distributor for the ship is formulated by researching and designing the field of the fire test method for the wind distributor for the ship by referring to the test method for the ship ceiling. Disclosure of Invention The invention aims to provide a fire resistance test method for a marine air distributor, which is characterized in that the air distributor is arranged on a ceiling, and the air distributor and the ceiling are combined to form a sample box body, so that an air distributor sample is compatible with a marine ceiling test device, specific test environments and conditions are set, the test results are ensured to be closer to the actual application conditions, and the fire resistance test results of the marine air distributor are more accurate and reliable. The aim of the invention can be achieved by the following technical scheme: The application provides a fire resistance test method of a marine wind distributor, which comprises the following steps: S1, preparing an experiment, preparing a prototype wind distributor for a ship as a sample, preparing experiment equipment and instruments and selecting proper experimental materials; S2, installing a sample, namely installing a prototype air distributor on a ceiling, and combining the ceiling and the prototype air distributor to form an air distributor sample box body so that an air distributor sample is compatible with a marine ceiling test device; S3, setting experimental conditions, setting temperature and humidity of a laboratory, simulating the internal environment of a ship, setting air flow and speed, and simulating the normal working state of a wind distributor; S4, a flame contact test is carried out, a fire source is ignited, the flame is contacted with the surface of the air distribution device sample, and the combustion condition of the flame, the combustion degree of the air distribution device sample and the development condition of the fire are observed and recorded; s5, a heat radiation test, namely placing a heat radiometer at a position of a standard distance of the marine wind distribution device, measuring heat radiation intensity, and recording and evaluating the fire resistance of the marine wind distribution device under heat radiation; S6, evaluating the combustion performance of the marine air distributor, wherein when the test reaches the preset time, the combustion performance of the marine air distributor is evaluated, and the fire resistance of the marine air distributor is evaluated by observing the combustion condition of a sample and residues after combustion, and the evaluation standards comprise a B15-level air distributor and a B0-level air distributor; And S7, analyzing and reporting the result, and analyzing the experimental result to judge whether the fireproof performance of the marine wind distributor meets the requirements. Preferably, according to the installation of the air distributor in step S2, the installation mode of the air distributor and the ceiling should be a practical installation mode, and when the air distributor is installed, the air outlet is located on the fire facing side of the ceiling, and the box body of the air distributor is located on the back fire facing side of the ceiling. Preferably, the ceiling structure is formed by stacking galvanized steel sheets with the thickness of 0.7mm, rock sheets with the thickness of 28.6mm and galvanized steel sheets with the thickness of 0.7mm, wherein the volume weight of the rock sheets is 120kg/m 3. In this embodiment, the ceiling includes a plurality of air distributors, the interval between adjacent air distributors is greater than 200mm, and the distance between the air distributors and the edge of the ceiling is greater than 200mm. Preferably, 5 thermocouples are arranged at the center of 4 1/4 areas on the back surface of the air distribution device sample box body and the center of the whole back surface according to the step S2, the thermocouples are used for measuring the average temperature rise of th