CN203422819U - Temperature-sensitive cable - Google Patents
Temperature-sensitive cable Download PDFInfo
- Publication number
- CN203422819U CN203422819U CN201320401568.5U CN201320401568U CN203422819U CN 203422819 U CN203422819 U CN 203422819U CN 201320401568 U CN201320401568 U CN 201320401568U CN 203422819 U CN203422819 U CN 203422819U
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- Prior art keywords
- temperature
- sensitive cable
- layer
- ntc characteristic
- insulating layer
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- 239000004020 conductor Substances 0.000 claims abstract description 20
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000004888 barrier function Effects 0.000 claims description 18
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- 230000000630 rising effect Effects 0.000 description 7
- 238000010257 thawing Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 1
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Abstract
The utility model discloses a temperature-sensitive cable, which is capable of guaranteeing a force which makes two detection conductors to move close to each other always exists between the two detection conductors, so as to improve reliability of a temperature sensing detector. The temperature-sensitive cable includes an insulative plastic external coating at the external layer, the two parallel detection conductors in the insulative plastic external coating, an NTC characteristic isolating layer, and a fusible insulative layer, wherein the NTC characteristic isolating layer and the fusible insulative layer are respectively wrapped outside the detection conductors. The temperature-sensitive cable also includes a plurality of binding belts which are located at the internal side of the insulative plastic external coating and wrap the NTC characteristic isolating layer and the fusible insulative layer at the same time, wherein the plurality of binding belts are arranged at intervals, and the fusing point of the binding belts is higher than the fusing point and melting point of the fusible insulative layer. The temperature-sensitive cable has advantages of being simple in structure, being capable of improving reliability and accuracy of the temperature sensing detector effectively, so as to avoid large scale fire hazard.
Description
Technical field
The utility model relates to a kind of fire control equipment, relates in particular to a kind of temperature-sensitive cable.
Background technology
In prior art, the analog linear temperature-sensing cable of conventional NTC characteristic is a kind of broad-spectrum disaster detection cable.The Chinese patent that for example patent No. is 200520121813.2 discloses a kind of analog linear temperature-sensing fire detecting cable based on fused insulating layer, as shown in Figure 1, comprise that two parallel detecting conductors, NTC characteristic barrier layer, fused insulating layer form, between two parallel detecting conductors 1,2, stack is provided with described NTC characteristic barrier layer 3, fused insulating layer 4, and the temperature of fusion scope of described fused insulating layer 4 is 20 ℃～140 ℃.This cable is coated by ambroin crust 5.This cable has advantages of reliability and the use length that improves analogue linear temperature-sensing detector.When there is fire, along with the rising of temperature, resistance reduces NTC characteristic barrier layer 3, fused insulating layer 4, along with rising fusing or the thawing of temperature, connect, thereby heat detector is reported to the police thereby make two detecting conductors 1,2 pass through the NTC characteristic barrier layer 3 that resistance is more and more lower.
Yet in reality is used, rising along with temperature, conventionally ambroin crust 5 melts and comes off, this just makes not make between two detecting conductors the two close power, thereby separation occurs, and two detecting conductors after separation, cannot be by 3 contacts of NTC characteristic barrier layer, thereby cannot complete warning, greatly increase fire risk.
Utility model content
The purpose of this utility model is to provide a kind of temperature-sensitive cable, can guarantee to exist all the time and make the two close power mutually between two detecting conductors, thus the reliability of raising heat detector.
For addressing the above problem, a kind of temperature-sensitive cable of the present utility model, comprise outer field ambroin crust, and two parallel detecting conductors, NTC characteristic barrier layer, the fused insulating layer of outer intracutaneous, at two parallel detecting conductors, be coated with respectively described NTC characteristic barrier layer and fused insulating layer outward; Described temperature-sensitive cable also comprises a plurality of bundling belts that are positioned at ambroin crust inner side, are also coated described NTC characteristic barrier layer and fused insulating layer simultaneously, described a plurality of bundling belts interval arranges, and the fusing point of bundling belt is higher than fusing point or the melting point of described fused insulating layer.
Described bundling belt is tinsel.
The spacing of described adjacent bundling belt is 0.2～0.7m.
Temperature-sensitive cable of the present utility model, when there is fire, along with the thawing disengaging of ambroin crust, along with the rising of temperature, resistance reduces NTC characteristic barrier layer simultaneously; Fused insulating layer is along with the rising fusing of temperature or melt, but two detecting conductors all the time tied band bundle, cannot mutually depart from, thereby two detecting conductors are connected by the more and more lower NTC characteristic barrier layer of resistance, heat detector warning.The utility model is simple in structure, can effectively improve reliability and the accuracy of heat detector, thereby avoids fairly large fire to occur.
Accompanying drawing explanation
Fig. 1 is the structural representation of temperature-sensitive cable in prior art;
Fig. 2 is the structural representation of temperature-sensitive cable in the utility model.
Embodiment
In order to make those skilled in the art person understand better technical solutions of the utility model, below in conjunction with drawings and embodiments, the utility model is described in further detail.
As shown in the figure, a kind of temperature-sensitive cable of the present utility model, comprise outer field ambroin crust 5, and two parallel detecting conductors 1,2 of outer intracutaneous and NTC characteristic barrier layer 3, fused insulating layer 4, at outer described NTC characteristic barrier layer 3 and the fused insulating layer 4 of being coated with respectively of two parallel detecting conductors 1,2; Described temperature-sensitive cable also comprises a plurality of bundling belts 6 that are positioned at ambroin crust 5 inner sides, are also coated described NTC characteristic barrier layer 3 and fused insulating layer 4 simultaneously, described a plurality of bundling belt 6 intervals arrange, and the fusing point of bundling belt 6 is higher than fusing point or the melting point of described fused insulating layer, thereby when fused insulating layer occurs to melt or melts, it is solid-state that bundling belt 6 still can keep.Described bundling belt 6 is tinsel, and the spacing of adjacent bundling belt is 0.2～0.7m.
When there is fire, along with the thawing disengaging of ambroin crust, along with the rising of temperature, resistance reduces NTC characteristic barrier layer simultaneously; Fused insulating layer is along with the rising fusing of temperature or melt, but two detecting conductors all the time tied band bundle, cannot mutually depart from, thereby two detecting conductors are connected by the more and more lower NTC characteristic barrier layer of resistance, heat detector warning.
Claims (3)
1. a temperature-sensitive cable, it is characterized in that: comprise outer field ambroin crust, and two parallel detecting conductors, NTC characteristic barrier layer, the fused insulating layer of outer intracutaneous, at two parallel detecting conductors, be coated with respectively described NTC characteristic barrier layer and fused insulating layer outward; Described temperature-sensitive cable also comprises a plurality of bundling belts that are positioned at ambroin crust inner side, are also coated described NTC characteristic barrier layer and fused insulating layer simultaneously, described a plurality of bundling belts interval arranges, and the fusing point of bundling belt is higher than fusing point or the melting point of described fused insulating layer.
2. a kind of temperature-sensitive cable as claimed in claim 1, is characterized in that: described bundling belt is tinsel.
3. a kind of temperature-sensitive cable as claimed in claim 1, is characterized in that: the spacing of described adjacent bundling belt is 0.2～0.7m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401568.5U CN203422819U (en) | 2013-07-05 | 2013-07-05 | Temperature-sensitive cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401568.5U CN203422819U (en) | 2013-07-05 | 2013-07-05 | Temperature-sensitive cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422819U true CN203422819U (en) | 2014-02-05 |
Family
ID=50021911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320401568.5U Expired - Fee Related CN203422819U (en) | 2013-07-05 | 2013-07-05 | Temperature-sensitive cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621256A (en) * | 2018-12-07 | 2019-04-16 | 河南中消物联科技有限公司 | A kind of the condition of a disaster monitoring system and its improved fire trace tube of structure |
-
2013
- 2013-07-05 CN CN201320401568.5U patent/CN203422819U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621256A (en) * | 2018-12-07 | 2019-04-16 | 河南中消物联科技有限公司 | A kind of the condition of a disaster monitoring system and its improved fire trace tube of structure |
| CN109621256B (en) * | 2018-12-07 | 2023-11-10 | 河南中消物联科技有限公司 | Disaster monitoring system and fire detection tube with improved structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20140705 |
|
| EXPY | Termination of patent right or utility model |