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Combined underground pipe gallery space fire safety research model device

An underground pipe gallery and model device technology, which is applied to teaching models, educational appliances, instruments, etc., can solve the problems of the inability to change the slope of the pipe gallery at multiple angles, difficulties in full-scale experiments and small-scale experiments, and high experimental costs.

Active Publication Date: 2019-02-15
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] According to the shortcomings of the underground pipeline space, especially the complex interior of the comprehensive pipeline gallery, the difficulty of comprehensive observation, and the difficulty of conducting full-scale fire experiments in multiple working conditions, the present invention provides a convenient and flexible comprehensive pipeline gallery fire smoke movement model device to solve the problem. It solves the problem of difficulties in full-scale experiments and small-scale experiments in the early stage of the development of integrated utility tunnels, and makes up for the blank spots in the experimental models of utility tunnels
This model device overcomes the difficulty of observing the smoke movement in the experiment, the inability to change the slope of the pipe gallery from multiple angles, the high cost of the experiment, the difficulty of realizing the comparison experiment of high-pressure water mist or other gas fire extinguishing facilities, and the difficulty of describing different structures and cabin pipe gallery models. The law of fire smoke, the difficulty of comparing the specific efficiency and effect of different fire detection devices in the pipe gallery, and the inability to change the ventilation mode can be used to analyze different pipe gallery structures, fire protection systems, fire detection devices, ventilation modes, fire source types, pipe Arbitrary combinations of corridor slopes, etc., to meet the needs of experimenters to carry out comprehensive pipe gallery ventilation and fire smoke simulation experiments under various complex working conditions

Method used

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  • Combined underground pipe gallery space fire safety research model device
  • Combined underground pipe gallery space fire safety research model device
  • Combined underground pipe gallery space fire safety research model device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 - Effect of Simulated Water Mist System on Smoke Diffusion and Fire Control of Cable Fire in Pipe Gallery

[0050] Make preliminary preparations first, and check whether all parts of the device are operating normally. The adjusting device achieves the set fire scene, simulating the fire condition of the comprehensive pipe gallery with single ignition source of the cable. The scale of the fire is set as a small-scale fire.

[0051] In the experiment, the fire source was placed in the middle of the pipe gallery. Start each test system according to the operation specification, start the computer to start temperature data collection, add the prepared fuel in the oil pan 23, put it in the trolley 25, set up the cables on the multi-layer cable rack 24, and light the oil pan 23 after the test system runs stably ignite the cable with an oil pan fire, and after the fuel in the oil pan 23 is completely burned and ignites the cable, observe the combustion characteristi...

Embodiment 2

[0052] Example 2 – Studying the smoke spread characteristics of pipe gallery under different ventilation modes and different slopes

[0053] Make preliminary preparations first, and check whether all parts of the device are operating normally. According to the ventilation mode, multiple sections of the main corridor 5 need to be connected, and the following three ventilation modes and different slope combinations are respectively simulated to simulate the fire conditions of the integrated pipe gallery with a single ignition source. The scale of the fire is set as a small-scale fire. Use the jack 12 to change the height of the end of the pipe gallery to simulate different slopes.

[0054] Ventilation mode a: The ventilation mode adopts air intake on both sides and exhaust air in the middle; the pipe gallery is composed of multi-section main corridors 5 connected, both ends are respectively connected to frequency conversion fans 1, and the top of the middle main corridor 5 is l...

Embodiment 3

[0058] Example 3 - Simulating the temperature distribution and fire control of the pipe gallery fire under the double-cabin or multi-layer pipe gallery structure

[0059] After the preparatory work in the early stage of the experiment was completed, in order to simulate the temperature distribution and fire control of the pipe gallery fire under the double-cabin pipe gallery structure, the separate modules of the two pipe gallery models prepared in advance were passed through Figure 9a The assembly and splicing are carried out in the same way, and the joints are fixed, and the temperature detection equipment is respectively arranged in the two pipe galleries. In the experiment, the fixed fire source was placed in the middle of the pipe gallery through the trolley 25, the fire scale was set as a small fire scale, the slope of the pipe gallery was 0°, and the ventilation speed was 0m / s. Ignite the fire on the side of one pipe gallery close to the other pipe gallery, start the d...

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Abstract

The invention relates to a combined underground pipeline space fire safety research model device. The device is formed by freely combining a plurality of integrated pipe gallery modules which are of the same structure and detachably assembled together. The combined module includes a variable-frequency ventilation device, a fire source device, a slope adjustment device, a fire detection device anda fire fighting system. One end of main pipe galleries is fixed on a support frame, and the other end is supported by a jack and the slope thereof can be adjusted. A mobile trolley equipped with a burning oil pan and a cable rack can slide in the pipe galleries to change the position of the fire source. The pipe gallery modules can be disassembled and assembled freely. Combined modules can be combined to form a multilayer or multi-compartment pipe gallery. After the fire detection device issues a warning, corresponding fire extinguishing media (such as water or gas) can be provided for fires of different fire source power through the control on the fire fighting system. The device provides an integrated, convenient and flexible small-size comprehensive pipe gallery scale experimental model, which can realize arbitrary combination of different pipe gallery structures, fire fighting systems, fire detection devices, ventilation modes, fire source types and pipe gallery slopes and meet theneeds of experimenters to carry out simulation experiments on the fire conditions of various complex pipe galleries.

Description

technical field [0001] The invention relates to a combined underground pipeline space fire safety research model device. A plurality of underground pipe space experimental device modules with simple structures and different sizes that can be disassembled and assembled are designed, and are connected to each other through groove combinations. Inside, slots are reserved for replaceable facilities such as fire protection systems, fire detection devices, ventilation devices, and fire sources, so as to realize combined experiments under various working conditions in the underground pipeline space, especially in the comprehensive pipeline gallery space. Background technique [0002] The urban comprehensive utility corridor specifically refers to a tunnel structure in which two or more types of municipal pipelines on the ground, underground or overhead are collectively arranged in the same underground artificial space, and a passage for maintenance personnel is left. With the rapi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 李俊梅徐晨亮王致远李炎锋王红艺
Owner BEIJING UNIV OF TECH
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