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Past retrieve cable type linear temperature-sensing fire disaster detector

A fire detector and wire-type technology, which is used in electrical fire alarms, thermometers and instruments using electrical/magnetic components directly sensitive to heat, etc., can solve problems such as short circuit false alarms, and achieve fast response and high quality. The effect of high reliability and low cost

Inactive Publication Date: 2008-09-03
张陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned non-recoverable linear temperature-sensitive detector with a short-circuit fault alarm is in use, because the detector can only output a first-level fire alarm, and it is also prone to short-circuit errors when detecting the conductor 11 and the semiconductor material layer 14 under an external force. report

Method used

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  • Past retrieve cable type linear temperature-sensing fire disaster detector
  • Past retrieve cable type linear temperature-sensing fire disaster detector
  • Past retrieve cable type linear temperature-sensing fire disaster detector

Examples

Experimental program
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Effect test

Embodiment 2

[0013] Embodiment 2, a non-recoverable cable-type linear temperature-sensitive fire detector, see image 3 , mainly by connecting the two ends of the temperature-sensing cable with the microcomputer modulator 4 and the terminal resistance R1 to form a closed-circuit signal acquisition circuit, which is characterized in that the structure of the temperature-sensing cable: it uses two elastic metal conductors 1, one of which is an elastic metal The conductor 1 is covered with a CTR insulating material layer 2 with a low Vicat softening point of 40°C to 180°C, and the other elastic metal conductor 1 is covered with a CTR insulating material layer 3 with a high Vicat softening point of 60°C to 300°C , one of which is covered with a CTR characteristic insulation material layer 3 and then coated with a conductive layer 5, and the two cores with different coating layers are twisted together in a back-twisted twisting method, and the twisting pitch is It is preferably between 20mm and...

Embodiment 3

[0014] Embodiment 3, a non-recoverable cable-type linear temperature-sensitive fire detector, see Figure 4 , the two ends of the temperature-sensing cable are respectively connected with the microcomputer modulator and the terminal resistor R1 to form a closed-circuit signal acquisition circuit, which is characterized in that the structure of the temperature-sensing cable is covered by two elastic metal conductors 1, one of which is covered CTR characteristic insulating material layer 3 with a high Vicat softening point of 60°C to 300°C, and then coated with a CTR characteristic insulating material layer 2 with a low Vicat softening point of 40°C to 180°C, or an elastic metal conductor 1 wrapped first Cover the CTR characteristic insulating material layer 2 with a low Vicat softening point of 40°C to 180°C, and then cover the CTR characteristic insulating material layer 3 with a high Vicat softening point of 60°C to 300°C, and another elastic metal conductor 1 Twisted togethe...

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Abstract

The invention is to provide an unrecoverable cable linear temperature sensing fire probe which realizes recoverable temperature sensing multilevel alarm. Both ends of the temperature sensing cable are respectively connected to a microcomputer modulator and a terminal resistor to form a closed circuit signal collecting circuit, characterized in that the structure of the temperature sensing cable is: two elastic metal conductors adopted respectively coat CTR special material layer with different Vicat softening point, two cores with different coat layers intertwisted in back-twist intertwist way. The intertwisted node distance is preferably between 20mm to 200mm to prepare the temperature sensing cable. The microcomputer modulator monitors the resistance value or voltage alternation between two elastic metal conductors, arranging two resistance values or voltage alarming signal starting values in a memory of the microcomputer modulator to realize double level constant temperature alarming signal output and realizes a malfunction alarming signal output according to the short circuit, the open circuit between the two elastic metal conductors and power cut of the microcomputer modulator.

Description

technical field [0001] The invention relates to a fire alarm device, a non-recoverable cable-type linear temperature-sensitive detector with a two-core structure. technical background [0002] A non-recoverable linear heat detector with short-circuit fault alarm in the prior art, application number ZL 200620133478.2 see figure 1 : The detector includes a detection cable, a resistance, and a resistance signal measuring device. The detection cable includes two detection conductors 11 and 12, a semiconductor material layer 14 and a meltable insulating layer 13 arranged between the two detection conductors. Under normal circumstances, the resistance between the two detection conductors 11 and 12 is infinite. When the temperature rises, the insulating layer 13 can be melted, and the detection conductor 11 and the semiconductor material layer 14 are short-circuited to report a fire alarm. When the two detection conductors 11 and 12 are under the action of heat or external force A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/06G01K7/16
Inventor 张陈王文江
Owner 张陈
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