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A analog linetype temperature-fixing fire detecting cable

A technology of fire detection and analog quantity, applied in fire rescue, electric fire alarms, cables, etc., can solve problems such as false alarms and the influence of detection cable reliability, and achieve the effect of overcoming false alarms

Inactive Publication Date: 2007-05-23
SURELAND IND FIRE SAFETY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the other two factors, the NTC principle analog line type fixed temperature detection cable in the prior art cannot be eliminated, which will affect the reliability of the detection cable, and it is easy to generate false alarms in high temperature environments, which is not suitable for for outdoor use

Method used

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  • A analog linetype temperature-fixing fire detecting cable
  • A analog linetype temperature-fixing fire detecting cable
  • A analog linetype temperature-fixing fire detecting cable

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Embodiment Construction

[0017] Referring to Fig. 2 (Fig. 2 only shows the cross section of the detection cable, and the longitudinal section of the detection cable is omitted), the analog quantity line type constant temperature fire detection cable of the present invention consists of two parallel detection conductors and an NTC characteristic barrier layer , a fusible insulating layer, and an NTC characteristic barrier layer 7 and a fusible insulating layer 6 are superimposed between two parallel detection conductors 4 and 5, and the melting temperature range of the fusible insulating layer is 20° C. to 140° C. ℃. In the present invention, the so-called parallel setting can adopt the following three forms:

[0018] One form: two detection conductors 4, 5 are arranged parallel to each other, as shown in Figure 3 (the figure shows the longitudinal section structure of the detection cable, and the cross section of the detection cable is omitted);

[0019] The second form: two detection conductors 4 an...

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Abstract

This invention relates to the analog linear fixed temperature fire detector cable, its features are: comprising two parallel detection conductors, NTC featured barrier layer, melting insulation layer, and fold setting the said NTC featured barrier layer and the melting insulation layer between the two parallel detection conductors, and the said melting insulation layer has melting temperature range of 20degreeC to 140degreeC. The invention improves the reliability and the usage length of analog linear fixed temperature detectors.

Description

technical field [0001] The invention relates to an analog quantity line type constant temperature fire detection cable. The detection cable adds a layer of fusible insulating layer between two detection conductors, which solves the problem of the analog quantity line type constant temperature detector due to the length of the detector and the False alarms caused by ambient temperature. Background technique [0002] In the prior art, the commonly used analog line type fixed temperature detection cable with NTC characteristics is a fire detection cable with a wide range of uses. Attached drawing 1 (transverse section view of the cable) shows the traditional analog line type constant temperature Schematic diagram of the detection cable structure. In the detection cable, there are two detection conductors 1 and 2. The two detection conductors are parallel together. There is an NTC characteristic barrier layer 3 between the two detection conductors (NTC characteristic refers to n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/06G01K7/22H01B7/00
CPCA62C3/00G08B17/06
Inventor 李刚进张卫社
Owner SURELAND IND FIRE SAFETY
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