Multi-station test exhaust fume collecting hood system

Abstract

The invention discloses a multi-station test exhaust fume collecting hood system which comprises a steel structure frame capable of walking on a track, a supporting platform is fixed to one side of the steel structure frame, and a conical exhaust fume collecting hood capable of sliding up and down and a hoisting system for controlling the conical exhaust fume collecting hood to move up and down are arranged in the steel structure frame. An opening in the upper end of the conical smoke collecting hood communicates with a smoke inlet of a smoke collecting pipeline through a flexible telescopic joint, a smoke outlet of the smoke collecting pipeline is connected with a smoke outlet pipe through a flexible telescopic joint, and an automatic telescopic butt joint device capable of controlling the extending amplitude of the smoke outlet pipe is arranged on the supporting platform. A high-temperature-resistant lifting curtain capable of stretching and contracting is further fixed to the lower end face of the circumferential edge of the conical exhaust fume collecting hood, a plurality of driving mechanisms capable of controlling the steel structure frame to walk are arranged at the bottom of the steel structure frame, and the multi-station and multi-range calorimetric test can be met only through one exhaust fume collecting hood system.

Description

technical field [0001] The invention relates to the field of fire experiment systems, in particular to a multi-station test smoke collection hood system. Background technique [0002] Fire is one of the major disasters that cause heavy casualties and economic losses in today's society, so the relevant experimental research involving fire has attracted more and more attention. At present, cone calorimeters are commonly used in fire tests to monitor the actual combustion of fires, and the smoke hood system of cone calorimeters is an important part that affects its calorimetric accuracy. However, the traditional large-scale smoke hood system is usually installed at a fixed position on the indoor roof and cannot be moved horizontally or vertically, so there are the following problems: (1) When the fire test needs to be carried out in different places, the same smoke hood system cannot be used Carry out calorimetric tests at different stations, and use of different smoke collect...

AI Technical Summary

Problems solved by technology

However, the traditional large-scale smoke hood system is usually installed at a fixed position on the indoor roof and cannot be moved horizontally or vertically, so there are the following problems: (1) When the fire test needs to be carried out in different places, the same smoke hood system cannot be used Carry out calorimetric tests at different stations, and use of different smoke collection systems may cause large errors in calorimetric results; (2) Since the traditional smoke collection hood system cannot be lifted vertically, it is necessary to meet the requirements of small fires or low-rise building fires. In order to achieve a good smoke collection effect, the test piece is usually raised to shorten the distance between it and the smoke collection hood system, but this will cause many restrictions on the loading of the test piece and the support and reaction force provided.

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