Switch quantity composite reparable cable-type line-type heat fire detector

A technology of fire detector and switching value, which is applied in fire alarms with electric action, thermometers and instruments with electric/magnetic elements that are directly sensitive to heat, and can solve the problem of low accuracy of alarm temperature and inability to correctly judge fires Alarm temperature and other issues to achieve high security and reliability

Inactive Publication Date: 2008-10-01
张陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this detector is: the alarm temperature set by the analog signal is related to the service length and the ambient temperature, and the fire alarm temperature cannot be correctly judged, so that the accuracy of the alarm temperature of the detector is low

Method used

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  • Switch quantity composite reparable cable-type line-type heat fire detector
  • Switch quantity composite reparable cable-type line-type heat fire detector
  • Switch quantity composite reparable cable-type line-type heat fire detector

Examples

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Embodiment Construction

[0010] A switch value compound recoverable cable-type linear temperature-sensing fire detector, see Example 1 figure 2 , image 3 , the two ends of the temperature-sensing cable are respectively connected with the microcomputer modulator 7 and the terminal resistors R1, R2 to form a closed-circuit signal acquisition circuit, which is characterized in that the structure of the temperature-sensing cable: two elastic metal conductors 1 are respectively coated with an insulating material layer 2 , wherein an elastic metal conductor 1 with a coating layer is coated with a conductive layer 5, the conductive layer 5 is intermittently coated, and the intermittent coating layer 5 can be extrusion coating, wrapping, longitudinal wrapping, coating coating, wherein the duration length of the intermittent coating is less than 5000mm, and the longitudinal disconnection distance of the conductive layer 5 is preferably between 0.2mm and 500mm. Split vertically. It can be directly and inter...

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Abstract

A switch amount resumable cable linetype temperature-sensing fire detector is provided, which can realize switch amount fixed temperature alarming, resumable temperature-sensing multi-stage alarming, short circuit fault alarming, circuit broken fault alarming, and electric signal processing device fault outputting. Two ends of a temperature-sensing cable are respectively connected with a microcomputer modulator and terminal resistors R1, R2 to form a closed-circuit signal collecting circuit, the fire detector is characterized in that, the structure of the temperature-sensing cable is configurated that, two elastic metal conductors are respectively coated with an insulative material layer, one of the elastic metal conductor coated with an insulative material layer is coated with an conductive layer which is an incontinuous conductive aluminium-plastic composite strip or copper plastic composite strip or metal foil; another metal wire is coated with a thermo-sensitive material layer with a critical temperature CTR; the three wire cores with coated layers are twisted together, wherein, the two elastic metal conductors with coated layers are twisted in a backtwist way, the metal wire with the coat layer is twisted with the two elastic metal conductors with coated layers in a filling way and then to extrusion-mold an oversheath layer.

Description

technical field [0001] The invention relates to a fire alarm device, in particular to a switching value composite and recoverable cable-type linear temperature-sensing fire detector. technical background [0002] The linear temperature-sensitive fire detector in the prior art is a kind of fire detector that is not widely used, and the linear temperature-sensitive detector used at present, see figure 1 The invention comprises a four-core structure temperature detector consisting of a switching value linear temperature-sensitive fire detector and an analog quantity linear temperature-sensitive fire detector. The two conductors 11 are coated with NTC plastic layers 9 respectively, and the two conductors are twisted together, and the other two elastic conductors 12 are respectively coated with meltable plastic layers 10 and twisted together. There is an outer sheath 14 on the outside, and the signal input end of the resistance signal measuring device 13 is connected to the cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/06G01K7/16G01R31/02
Inventor 张陈王文江
Owner 张陈
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