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Short-circuit alarming method for irrecoverable linear temperature-sensitive detector

A technology of temperature sensing detector and short-circuit alarm, applied in the direction of electric fire alarm, etc., can solve the problems of poor reliability, false alarm, and the conversion box cannot send short-circuit fault alarm signal, etc., so as to improve the reliability of fire alarm and prevent The effect of false alarm problems

Inactive Publication Date: 2007-09-19
SURELAND IND FIRE SAFETY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the alarm method used in the non-recoverable linear temperature sensing detector of the prior art has the following problems: during the installation and use of this linear temperature sensing element, once it is subjected to excessive mechanical external force , it

Method used

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  • Short-circuit alarming method for irrecoverable linear temperature-sensitive detector
  • Short-circuit alarming method for irrecoverable linear temperature-sensitive detector
  • Short-circuit alarming method for irrecoverable linear temperature-sensitive detector

Examples

Experimental program
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Effect test

Embodiment 1

[0015] As shown in Figure 2, the non-recoverable linear temperature sensing detector provided by the present invention includes two linear temperature sensing elements A and B arranged in parallel, and terminal resistors 16 respectively connected to one end of the linear temperature sensing elements A and B, 17 and the conversion box 18 connected to the other end of the linear temperature sensing element A and B at the same time; wherein the linear temperature sensing element A consists of two detection conductors 10,11 arranged in parallel and an optional one between the detection conductors 10,11 arranged in parallel. Composed of a molten insulating layer 15; the linear temperature sensing element B is composed of two detection conductors 12, 13 arranged in parallel and an NTC characteristic barrier layer 14 arranged in parallel between the detection conductors 12, 13. The detection conductors 10 and 11, 12 and 13 can be arranged in parallel, winding or coaxial manner, while ...

Embodiment 2

[0017] As shown in Figure 3, this embodiment is an improvement on the basis of Embodiment 1: the two detection conductors 10 and 12 in Embodiment 1 are replaced by a detection conductor 19. At this time, the detection conductors 11, 19 and The fusible insulating layer 15 forms the linear temperature sensing element A, while the detection conductors 13, 19 and the NTC characteristic barrier layer 14 form the linear temperature sensing element B, and other structures remain unchanged.

Embodiment 3

[0019] This embodiment is an improvement on the basis of Embodiments 1 and 2: any conductor in the detection conductor 12, 13 or 19 is replaced by a thermocouple wire, thereby forming a line type with thermocouple characteristics with another detection conductor The temperature sensing element B and the conversion box 18 are used to detect the state of the linear temperature sensing element A and the voltage (potential) value and voltage value change rate of the linear temperature sensing element B in real time, and other structures remain unchanged.

[0020] When the linear temperature sensing elements A and B in the non-recoverable linear temperature sensing detector provided by the present invention are heated and reach a certain temperature, the meltable insulating layer 15 in the linear temperature sensing element A of the heated part will begin to soften Or melt, at this time the detection conductor 10, 11 or 10, 19 will eliminate the fusible insulating layer 15 between t...

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Abstract

A short circuit alarm method used in an unrecovery line-type temperature susceptibility detector comprises steps of: detecting a state of a line-type temperature perceiving member A, and resistance value, voltage value or change rate of a line-type temperature perceiving member B; when the line-type temperature perceiving member A is detected in a ''short circuit'' state, and one or more of the resistance value, the voltage value and the change rate of the line-type temperature perceiving member B are not exceeded a corresponding predetermined valve, a ''short circuit'' fault alarm signal is generated; when the line-type temperature perceiving member A is detected in the ''short circuit'' state, and one or more of the resistance value, the voltage value and the change rate of the line-type temperature perceiving member B are exceeded the corresponding predetermined valve, a ''short circuit'' fire alarm signal is generated. The short circuit alarm method used in the unrecovery line-type temperature susceptibility detector provided in the invention is capable of generating different alarm signals according to a short circuit fault or a fire circumstance, respectively, thereby preventing wrong alarm problems, and increasing fire alarm reliability.

Description

technical field [0001] The invention relates to a short-circuit alarm method, in particular to a short-circuit alarm method for a non-recoverable linear temperature-sensitive detector. Background technique [0002] Linear temperature detector is a kind of fire detector widely used at present. It is mainly divided into recovery type and non-recoverable type. It usually consists of a linear temperature sensing element, a terminal resistor connected to one end of the The other end of the type temperature sensing element can detect the alarm electrical parameter (or sampling value) on the linear temperature sensing element in real time, and output the conversion of the fire alarm signal according to the size or change value of the alarm electrical parameter (or sampling value) box composition. Fig. 1 is a longitudinal partial structure sectional view of a linear temperature sensing element in a non-recoverable linear temperature sensing detector in the prior art. As shown in F...

Claims

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Application Information

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IPC IPC(8): G08B17/06
Inventor 张卫社李刚进
Owner SURELAND IND FIRE SAFETY
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