Fire resistance test device and fire resistance test method for hanging laying cable for super high-rise building

A withstand voltage test device, a technology for laying cables, applied in the direction of measuring device, measuring device casing, using stable tension/pressure to test the strength of materials, etc. stability and reliability, stable and convenient flame temperature control

Inactive Publication Date: 2020-06-12
FAR EAST CABLE +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this invention discloses the cable structure and production process, it does not mention the line integrity test device and test method for the fire-resistant low-smoke halogen-free medium-voltage suspension cable under the conditions of fire, tension and voltage application

Method used

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  • Fire resistance test device and fire resistance test method for hanging laying cable for super high-rise building
  • Fire resistance test device and fire resistance test method for hanging laying cable for super high-rise building
  • Fire resistance test device and fire resistance test method for hanging laying cable for super high-rise building

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Embodiment 1

[0036] see Figure 1 to Figure 3 , The hanging cable fire resistance test device for super high-rise buildings of this embodiment includes a cable sample 1, a blowtorch 2, a tensile test device 3, and a pressure test device 4.

[0037] Cable sample 1 is a vertical section of a fire-resistant hanging cable, including a cable insulated core 11 and a load-bearing unit 12. After three cable insulated cores 11 and three load-bearing units 12 are twisted into a cable, the fire-resistant layer and outer protective layer are wrapped outside.

[0038] In order to control the flame temperature more stably and conveniently, the burner 2 of this embodiment adopts a belt-shaped propane gas burner, which includes a nozzle, a burner controller and a venturi mixer, and the outlet of the venturi mixer is connected to the nozzle through the burner controller. The blowtorch adopts a central air supply blowtorch. The nozzle has a nominal length of 500mm and a nominal width of 15m. The nozzle has three...

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Abstract

The invention discloses a fire resistance test device and a fire resistance test method for a hanging laying cable for a super high-rise building. The fire resistance test device comprises a combustion device, a tension test device and a pressure resistance test device; wherein the combustion device is arranged in the middle of the lower part of a cable sample and is suitable for providing a firesource required by a test for the cable sample, and the tension test device is suitable for fixing the cable sample and providing tension required by the test for the cable sample. A withstand voltagetest device is connected with the cable sample, and is suitable for providing test voltage for the cable sample and detecting whether insulation of the cable sample is broken down or not. The invention can practically and effectively simulate the state of the fire-resistant suspended laid cable in case of a fire, i.e., a harsher line integrity test under the conditions of fire and self-gravity bearing, so that the safety and reliability of the cable are ensured.

Description

Technical field [0001] The invention belongs to the technical field of cable testing, and specifically relates to a fire resistance test device and a test method for hanging cables for super high-rise buildings. Background technique [0002] With the development of urbanization, super high-rise buildings over 100 meters are constantly emerging, and people basically rely on elevators to get on and off. Therefore, in high-rise buildings, even if there is a fire, they must escape from the elevator. In addition, all security facilities also require electric drive. Therefore, as the main channel for power transmission to the building, the hanging cable must have the ability to keep the power on during the fire, that is, have the fire resistance characteristics. At the same time, it must have low-smoke, halogen-free and flame-retardant properties to ensure a safer escape environment for building personnel in the event of a fire. [0003] Existing fire-resistant hanging cables such as C...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01R31/16G01R1/04G01N31/12G01N3/18G01N3/02
CPCG01N3/02G01N3/18G01N31/12G01R1/0408G01R31/1272G01R31/16
Inventor 刘学徐静周锋汪传斌蒋洪平蒋华娟
Owner FAR EAST CABLE
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