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Automatic detection and alarm system for fire resistance test of wire and cable

A technology of fire-resistant characteristics and automatic detection, which is applied in alarms, short-circuit tests, instruments, etc., can solve problems such as time-consuming and labor-intensive efficiency, and achieve the effects of improving detection efficiency, overcoming time-consuming and labor-intensive, and reducing the influence of human factors

Pending Publication Date: 2021-08-10
海检检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the time-consuming, labor-intensive, low-efficiency, and potential safety hazards of existing fire-resistant characteristic test devices, and to provide an automatic detection and alarm system for fire-resistant characteristic tests of wires and cables, which can realize automatic adjustment of test parameters And real-time monitoring, as well as automatic recording and storage of test results. In addition, it can automatically alarm unqualified cable samples and cut off the power supply and extinguish the flame of the blowtorch in time, which can improve the detection efficiency while reducing the influence of human factors, and improve the detection results. On the basis of accuracy, ensure the safety of testing equipment and testing process

Method used

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  • Automatic detection and alarm system for fire resistance test of wire and cable
  • Automatic detection and alarm system for fire resistance test of wire and cable
  • Automatic detection and alarm system for fire resistance test of wire and cable

Examples

Experimental program
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Effect test

Embodiment approach 1

[0032] Implementation mode 1: if figure 1 , 2 As shown, the automatic detection and alarm system for the fire resistance test of wires and cables includes a sample support frame 1 for fixing the tested cable sample 0, and a blowtorch 2 for generating a simulated fire flame to perform a combustion test on the tested cable sample 0 , a fire source control system 3 for supplying combustion-supporting gas to the blowtorch 2, a loop control system 4 for connecting the tested cable sample 0 and supplying power to simulate the working conditions and simultaneously testing the integrity of the electrical circuit, for centralized control The fire source control system 3 and the PLC control system 5 of the loop control system 4, wherein the torch 2 is connected to the fire source control system 3 through a gas pipeline, and the tested cable sample 0 is connected to the loop control system 4 constitutes an energization circuit, and the fire source control system 3 and the loop control s...

Embodiment approach 2

[0033] Implementation mode 2: if image 3 As shown, the fire source control system 3 of the electric wire and cable fire resistance test automatic detection and alarm system includes an ignition control circuit 31 and a main gas control circuit 32; wherein, the ignition control circuit 31 includes an ignition device 311, automatic ignition / extinguishing Control device 312 ; the main gas control circuit 32 includes a propane cylinder 322 , a propane electric regulating valve 321 , a compressed air cylinder 324 and an air electric regulating valve 323 . The ignition device 311 is fixed on the front side of the torch burner 21, the ignition device 311 is electrically connected to the automatic ignition / fire extinguishing control device 312, and the propane gas cylinder 322 passes through the gas pipeline through the propane electric regulating valve 321 The Venturi mixer 22 is connected, and the compressed air cylinder 324 is connected to the Venturi mixer 22 through an air elect...

Embodiment approach 3

[0034] Implementation mode 3: if Figure 4 As shown, the loop control system 4 of the automatic detection and alarm system for the fire resistance test of electric wires and cables includes a power supply 41 connected to the tested cable sample 0 and the sample support frame 1 (if there is no metal layer), a transformer 42, and a voltage transmitter. Device 43, current sensor 44. The primary side of the transformer 42 is connected to the power supply 41, and each phase line on the secondary boost side of the transformer 42 is connected to the tested cable sample 0 and the sample support frame 1 (if there is no metal layer) through the fuse 45. The current sensor 44 is connected to the tested cable sample 0 and the sample support frame 1 (if there is no metal layer) through a variable resistor 46, and a voltage regulator 47 and a power control switch are arranged between the primary side of the transformer 42 and the power supply 41 48. The corresponding phase line of the curr...

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Abstract

The invention relates to an automatic detection and alarm system for fire resistance test of a wire and cable. The system comprises a sample supporting frame, a blow lamp, a fire source control system, a loop control system and a PLC control system; the blow lamp is connected with the fire source control system through a gas pipeline; a tested cable sample is connected to the loop control system to form an electrified loop, and the fire source control system and the loop control system are connected with the PLC control system. The automatic detection and alarm system for the fire resistance test of the wire and cable can realize automatic adjustment and real-time monitoring of test parameters and automatic recording and storage of test results, can also automatically give an alarm for unqualified cable samples and timely cut off a power supply and extinguish flame of a blow lamp, improves the detection efficiency, reduces the influence of human factors, and ensures the safety of detection equipment and a test process on the basis of improving the accuracy of a detection result.

Description

technical field [0001] The invention relates to the field of an automatic detection and alarm system for a fire-resistant characteristic test of electric wires and cables, in particular to an automatic detection and alarm system for a fire-resistant characteristic test of a low-voltage electric wire and cable. Background technique [0002] The basic function of wires and cables is to transmit electricity to electrical loads. The fire-resistant cable can supply power and run normally for a certain period of time after a fire or at the fire scene, ensuring the electricity demand of emergency power supply, fire-fighting equipment, fire alarm equipment, emergency lighting equipment and other important equipment. The fire-resistant characteristic test is a detection test for detecting the fire-resistant performance of fire-resistant wires and cables. The implementation method is to fix the fire-resistant cable on the sample support device in a straight line, and the sample is con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12G01R31/52G08B21/18
CPCG01N31/12G01R31/52G08B21/185
Inventor 刘玉凤胡振兴李传增何文斌杨启贤孙德辉刘娜
Owner 海检检测有限公司
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