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Test device for fire detector response performance under low-temperature environment, and experiment method

A technology for fire detectors and low temperature environments, which is applied in the testing, measuring devices, instruments, etc. of machine/structural components, and can solve the problem of not considering the fire response performance of fire detectors.

Active Publication Date: 2020-02-04
SHENYANG FIRE RES INST OF MEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this test does not consider testing the fire response performance of fire detectors in low temperature environments.

Method used

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  • Test device for fire detector response performance under low-temperature environment, and experiment method
  • Test device for fire detector response performance under low-temperature environment, and experiment method

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Experimental program
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Embodiment 1

[0023] like Figure 1-2 As shown, a test device for the response performance of a fire detector in a low-temperature environment includes a test box 9, a refrigerator 1, a combustion furnace 8, a fan 14, and a measurement and control system for the entire device. The two ends of the refrigerator 1 are respectively There is a cold air outlet 2 and a return air outlet 13, and the two ends of the test box 9 are respectively opened with an air inlet 4 and a hot air outlet 11. The cold air outlet 2 of the refrigerator 1 passes through the cold air connection pipe 3 and the air inlet of the test box 9 4 connection, the hot air outlet 11 of the test box 9 is connected with the air return port 13 of the refrigerator 1 through the hot air connection pipe 12 to form a closed-loop air circulation loop, and the fan 14 is installed inside the refrigerator 1 to blow the cold air out to form a cold The air flow, the normal temperature air flow and the cold air flow are all blown into the tes...

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Abstract

The invention relates to a test device for fire detector response performance under low-temperature environment, and an experiment method. The test device comprises a test box, a refrigerator, a combustion furnace and a measurement and control system of the whole device, wherein two ends of the refrigerator are respectively connected with two ends of the test box through a cold air current connection tube and a warm air current connection tube to form an air current circulation closed loop, at the side of an air intake of the test box is provided with a smoke entrance, the combustion furnace is provided with a smoke outtake , the smoke entrance is connected with the smoke outtake through a smoke pipe, and a tested fire detector is mounted in the test box; and the measurement and control system comprises a smoke dust optical densimeter, a hygrothermograph, an anemometer and a measurement control host. The method can measure fire response capability of a point type smoke-sensitive fire detector under low temperature environment, and provides scientific evidence for correctly evaluating the fire detection capability at low temperature of the fire detector.

Description

technical field [0001] The invention belongs to the technical field of fire detector performance testing, and in particular relates to a test device and a test method for the response performance of a fire detector in a low-temperature environment. Background technique [0002] At present, the application of fire detectors has been very popular all over the world. It realizes early detection of fires by detecting early fire products such as smoke, temperature rise and certain gases, so as to realize timely fire fighting. In some application scenarios, such as some ancient buildings, parking lots, warehouses, etc. in northern my country, fire detectors may operate in cold environments, and the lowest temperature may reach minus 20 degrees. In this case, whether the fire detector can have the same fire detection capability as that at normal temperature is a matter of great concern to users, manufacturers and researchers. [0003] The national standard GB4715-2005 "Point Smoke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B29/04G08B29/14G01M99/00G01N15/06
CPCG08B29/043G08B29/145G01M99/002G01M99/005G01N15/06G01N15/075
Inventor 董文辉王勇俞龚溥王卓甫
Owner SHENYANG FIRE RES INST OF MEM
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