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Multifunctional cable linear temperature sensing fire detector

A fire detector, multi-functional technology, applied in the direction of electrical fire alarms, cables, instruments, etc., can solve the problems of false alarms, inability to correctly judge fire and alarm temperature, and low accuracy of alarm temperature.

Inactive Publication Date: 2007-08-15
张陈 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of detector is: when the detector is heated and the temperature reaches a certain alarm temperature, the detector can predict the fire alarm. The alarm temperature is related to the length of the detector and the heating length. The longer the heating length, the lower the alarm temperature value. That is, the fire and alarm temperature cannot be correctly judged, so that the accuracy of the detector alarm temperature is low
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
During the use of the above-mentioned recoverable cable-type heat-sensitive fire detector, because the set alarm temperature is related to the heated length, service length and ambient temperature of the heat-sensitive detector, the actual heated temperature cannot be correctly judged. Therefore, the set The set alarm temperature value is inaccurate, which may easily cause false or missed fire alarms.

Method used

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  • Multifunctional cable linear temperature sensing fire detector
  • Multifunctional cable linear temperature sensing fire detector
  • Multifunctional cable linear temperature sensing fire detector

Examples

Experimental program
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Effect test

Embodiment 2

[0061] Embodiment 2, the structure of the recoverable temperature-sensing cable is as shown in Fig. 5: two elastic metal conductors 21, one of which is coated with high molecular polymer insulating material or PTC characteristic high molecular polymer material layer 22, and the other is Cover NTC or CTR characteristic high molecular polymer material layer 23, and then cover a layer of high molecular polymer insulating material or PTC characteristic high molecular polymer material layer 22, two wire bodies with different material coating layers, stranded Combined or twisted together, extruding or wrapping a layer of outer sheath 24 to make a temperature-sensing cable.

Embodiment 3

[0062] Embodiment 3 The structure of the recoverable temperature-sensing cable is as shown in Figure 6: two elastic metal conductors 21 are respectively coated with NTC or CTR characteristic high molecular polymer material layer 23, and then respectively coated with a layer of high molecular polymer insulating material Or the PTC characteristic high molecular polymer material layer 22, two wires with the same covering layer are twisted or twisted together, and a layer of outer sheath 24 is extruded or wrapped to make a temperature-sensitive cable.

Embodiment 4

[0063] Embodiment 4, the structure of the recoverable temperature-sensing cable is as shown in Figure 7: two elastic metal conductors 21 are respectively coated with NTC or CTR characteristic polymer material layer 23, and then respectively coated with a layer of polymer insulation material or PTC characteristic high molecular polymer material layer 22, and then respectively coated with a layer of aluminum-plastic composite tape or copper-plastic composite tape or metal foil layer 25, two wires with the same coating layer, twisted or wound on Together, extrude or wrap a layer of outer sheath 24 to make a temperature-sensitive cable; one of them is covered with NTC or CTR characteristic high molecular polymer material layer 23 and high molecular polymer insulating material or PTC characteristic high molecular polymer The wire body of the material layer 22 may not be coated with aluminum-plastic composite tape or copper-plastic composite tape or metal foil layer 25 .

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Abstract

This invention relates to one multi-function cable linear temperature fire detector, of which tow ends are connected to resistance signal process device and terminal case to form enclosed signal collection circuit to realize the temperature degrees and change rate warm system and the monitor system, and which is characterized by the following: the two spring metal conductors on cable are set with macromolecule polymer insulation materials or PTC property materials layers and NTC or CTR or semiconductor materials or insulation layers covered with two pieces of wires impacted into one layer of insulation protection cover for cable; the resistance signal process device monitors the change between the cover layers.

Description

technical field [0001] The invention relates to a fire alarm device, which is a multifunctional cable-type linear temperature-sensitive fire detector. technical background [0002] The linear temperature-sensitive fire detector in the prior art is a fire detector with a wide range of uses. The linear temperature-sensitive detectors currently used can be divided into five types according to different operating principles: [0003] The first is a switch value line type temperature-sensitive detector, see Fig. 1, in this detector, there is an outer sheath 1, and two (or three, four) elastic conductors 3 are twisted in this sheath At the same time, the outside of the conductor is covered with a plastic layer 2 with a certain melting point. When the temperature of the detector rises until the plastic softens or melts, under the action of the elastic force of the elastic conductor, the conductors contact each other, that is, a short circuit occurs, so as to achieve the purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/06G01K7/00H01B7/00
CPCG01K3/005G08B17/06
Inventor 张陈王文江
Owner 张陈
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