CN101149864A - Double temperature alarming irrecoverable type line type temperature-sensing detector - Google Patents
Double temperature alarming irrecoverable type line type temperature-sensing detector Download PDFInfo
- Publication number
- CN101149864A CN101149864A CNA200710157969XA CN200710157969A CN101149864A CN 101149864 A CN101149864 A CN 101149864A CN A200710157969X A CNA200710157969X A CN A200710157969XA CN 200710157969 A CN200710157969 A CN 200710157969A CN 101149864 A CN101149864 A CN 101149864A
- Authority
- CN
- China
- Prior art keywords
- material layer
- conductor
- temperature
- resistance
- elastic metallic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
Abstract
The wire-type non-restored two-temperature-alarming heat-sensing detector realizes two-grade fixed-temperature alarming and outputting of short-circuit break-circuit fault and the cut-off fault of a micro-computer modulator. Two ends of a heat-sensing cable are connected respectively with the micro-computer modulator and a terminal resistor to form a closed-circuit signal collection circuit. It is characterized in that the structure of the cable is three elastic metal conductors in which one is coated with an insulation material layer whose Vicat softening point is between 40-180 degree C, which can also be coated with or no aluminium-plastic or copper-plastic composite band or metal foil or conductive material layer, the other is coated with an insulation layer whose Vicat softening point is between 40-180 degree C and coated again with aluminium-plastic or copper-plastic composite band or metal foil or conductive material layer. The two conductor wires with same coatings or different coatings are twisted or wound together with a third conductor wire coated with a semi-conductor material layer and an external jacket is extruded on at same. The twisting or winding pitch of the three wires is optimized between 20mm-200mm.
Description
Technical field
The present invention relates to fire alarm installation, a kind of double temperature alarming irrecoverable type line type temperature-sensing detector.
Technical background
Line-type heat detector of the prior art is a kind of purposes fire detector very widely, the line-type heat detector that uses is at present: multistage alarm switch amount line-type heat detector, referring to Fig. 1, in this detector, an oversheath 14 is arranged, two elastic conductors 11 in this sheath coat with the plastic layer 12 and the conductor lapping layer 13 of different melting points respectively, and twist together.When the cable heating temperature of detector rises to the melting point after-tack or the thawing of plastic layer 12, elastic conductor 11 is in contact with one another with plastic layer 12 or conductor lapping layer 13 respectively under the elastic force effect, twice short circuit takes place, thereby reach the purpose of repeatedly reporting a fire.The advantage of this detector is: after the temperature of any point on the detector arrives the alarm temperature of setting; but detector is short-circuit alarming all; detector alarm sensitivity is irrelevant, therefore, very high to the detection sensitivity of protected object local overheating or fire with the length of being heated.Shortcoming is that detector is output alarm signal also when being subjected to accidents such as mechanical external force extruding or damaged by rats to cause short circuit when detector, can't distinguish short-circuit, open circuit, the output of microcomputer modulator disconnection fault.
Summary of the invention
The purpose of this invention is to provide a kind of double temperature alarming irrecoverable type line type temperature-sensing detector, realize the warning of twin-stage constant temperature, short trouble output, open circuit fault output, the output of microcomputer modulator disconnection fault.
A kind of double temperature alarming irrecoverable type line type temperature-sensing detector, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator and terminal resistance respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable is that an elastic metallic conductor coating Vicat softening point is the insulation material layers in 40 ℃～180 ℃ scopes, also can coat or not coat plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer again; It is the interior insulation material layers of 40 ℃～180 ℃ scopes that another root elastic metallic conductor coats Vicat softening point, coats plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer again; Two cores that identical or different clad arranged are stranded or twine with the 3rd conductor that is coated with semiconductor material layer, and it is stranded or to twine pitch preferred between 20mm～200mm, then extrusion molding external sheath layer together.The resistance of insulation material layer and semiconductor material layer or the alerting signal startup value amount of voltage are set in the microcomputer modulator internal memory, the resistance or the voltage variety that produce between the conductor of two elastic metallic conductors of microcomputer modulator monitoring and coating semiconductor material layer, utilize two elastic conductors elder generation and plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer short circuit when identical or different temperature, and then with the semiconductor material layer short circuit, realize two Wen Dingwen alerting signals outputs.When temperature sensing cable is short-circuited, opens circuit, during the microcomputer modulator outage, by the microcomputer modulator output short-circuit, open circuit, microcomputer modulator disconnection fault signal.
The outstanding advantage of a kind of double temperature alarming irrecoverable type line type temperature-sensing detector of the present invention is: realize the double-temperature alarm function, temperature sensing cable is short-circuited, opens circuit, microcomputer modulator outage newspaper fault function, and the use length of temperature sensing cable is unrestricted.Still can keep the cross-section of cable less although increased plastic-aluminum or compound copper-plastics band or metal forming or conductive material clad in the temperature sensing cable, and to conductor cladding plastic-aluminum or compound copper-plastics band or metal forming or conductive material clad, the temperature sensing cable external and internal compositions is heated simultaneously, and with heat rapidly conduction reach the alarm temperature value that sets, the fire response time is reported to the police more than 5 seconds at least in advance than prior art, for the incipient fire forecast gains time.
Be provided with two resistances or the voltage alarm set point corresponding in the microcomputer modulator, when temperature surpasses a setting value, send the constant temperature alerting signal with temperature.Two constant temperature alarm temperatures are any two in 60 ℃, 70 ℃, 85 ℃, 105 ℃, 138 ℃, 180 ℃ six grades.The product quality reliability height, cost is low.
Description of drawings
Fig. 1 is a kind of multistage alarm switch amount line-type heat detector structural representation of tradition;
Fig. 2 is a kind of double temperature alarming irrecoverable type line type temperature-sensing detector cross-sectional view;
Fig. 3 is a kind of double temperature alarming irrecoverable type line type temperature-sensing detector structural representation;
Embodiment
A kind of double temperature alarming irrecoverable type line type temperature-sensing detector, see Fig. 2, Fig. 3, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 8 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable is: it is insulation material layers 4 in 40 ℃～180 ℃ scopes that two elastic metallic conductors 1 coat Vicat softening point respectively, then wherein one or two coat plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer 5 again; Two cores that identical or different clad arranged are stranded or twine with a conductor that is coated with semiconductor material layer 32, and it is stranded or to twine pitch preferred between 20mm～200mm, at last extrusion molding external sheath layer 6 together.Terminal resistance R resistance value is preferred at 50 Ω～50M Ω.
When temperature sensing cable when allowing to use high ambient temperature following, between the elastic metallic conductor 1 and and be in all the time under the high-impedance state as the plastic-aluminum of public pole or the resistance between compound copper-plastics band or metal forming or the conductive material layer 5, microcomputer modulator 8 detects less than the change in resistance between two elastic metallic conductors 1 and the conductor 2.In microcomputer modulator 8, be provided with the electric signal warning startup value of a plurality of resistances or voltage signal variation range, change in resistance between microcomputer modulator two elastic metallic conductors 1 of 8 monitorings and the conductor 2, when temperature sensing cable is heated and surpass the Vicat softening point of the insulation material layer 4 of an outer coating of elastic metallic conductor 1 wherein, under the elastic force effect, this root elastic metallic conductor 1 and plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer 5 are short-circuited, contact with semiconductor material layer 3 simultaneously, and this Standard resistance range between the conductor 2 is by microcomputer modulator 8 outputs one alerting signal; When temperature continues to raise, when surpassing the Vicat softening point of another root elastic metallic conductor 1 outer insulation material layer 4 that coats, under the elastic force effect, this root elastic metallic conductor 1 and plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer 5 are short-circuited, contact simultaneously, and this resistance between the conductor 2 or voltage range are exported another heat alarm by microcomputer modulator 8 with semiconductor material layer 3; When non-pyric factor make be short-circuited between two elastic metallic conductors 1 or two elastic metallic conductors 1 and conductor 2 between be short-circuited this resistance or voltage range, by microcomputer modulator 8 output short-circuit fault-signals, when wherein one when opening circuit of root three metallic conductor, this resistance or voltage range, then judge output open circuit fault signal by microcomputer modulator 8, the relay of microcomputer modulator 8 is judged the output of output disconnection fault signal.Terminal resistance R resistance value is preferred at 50 Ω～50M Ω.
Material and behavioral illustrations that conductor of the present invention and conductor clad are adopted:
1. insulation material layer:
Select the performance of insulating material to be: Vicat softening point is 40 ℃～180 ℃, and specific insulation is 10
10～10
18All plastics of Ω cm, elastomeric material.
2, elastic metallic conductor: specification is selected for use between Φ 0.2～3.0mm.
Material can be selected the alloy material of steel wire, copper cash, iron wire, nickel wire, platinum line, stainless steel wire and above-mentioned material for use, wire external layer or zinc-plated, zinc-plated, copper facing, silver-plated, chromium plating, nickel plating.Because of metal wire rod is subjected to have certain intensity and elasticity after stretching, the extension, so be called the elastic metallic conductor.
3, conductor: specification is selected for use between Φ 0.2～3.0mm, and material is all conductive wires.
4, semiconductor material layer: adopt specific volume resistance 10
-2～10
9All plastics, rubber, lacquer, stupalith or above-mentioned material with NTC characteristic or CTR characteristic.
5, conductive layer: specific volume resistance is 10
-2～10
4Between all plastics, rubber, lacquer, stupalith or above-mentionedly have NTC, a CTR characteristic material.
6, plastic-aluminum or compound copper-plastics band, metal forming: thickness is to select for use between 0.01～1.0mm, and width is preferred between 5～20mm.
7, extrusion molding external sheath layer: material can be high molecular polymer insulating material or PTC, NTC, CTR characteristic macromolecule polymer material, also can be the semiconductor macromolecule polymer material.The thickness of extrusion molding restrictive coating is selected between 0.1～2.0mm.
Claims (2)
1. double temperature alarming irrecoverable type line type temperature-sensing detector, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator (8) and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable is: it is insulation material layers (4) in 40 ℃～180 ℃ scopes that two elastic metallic conductors (1) coat Vicat softening point respectively, then wherein one or two coat plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer (5) again; Two cores that identical or different clad arranged are stranded or twine with conductor (2) that is coated with semiconductor material layer (3), and it is stranded or to twine pitch preferred between 20mm～200mm, at last extrusion molding external sheath layer (6) together.Resistance or change in voltage between microcomputer modulator (8) monitoring two elastic metallic conductors (1) and the conductor (2), when temperature sensing cable is heated and surpass the Vicat softening point of the insulation material layer (4) of the outer coating of an elastic metallic conductor (1) wherein, under the elastic force effect, this root elastic metallic conductor (1) and plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer (5) are short-circuited, contact with semiconductor material layer (3) simultaneously, and when resistance or voltage reach a warning startup value between conductor (2), microcomputer modulator (8) output one heat alarm; When temperature continues to raise, when surpassing the Vicat softening point of the outer insulation material layer (4) that coats of another root elastic metallic conductor (1), under the elastic force effect, this root elastic metallic conductor (1) and plastic-aluminum or compound copper-plastics band or metal forming or conductive material layer (5) are short-circuited, contact with semiconductor material layer (3) simultaneously, and this resistance or voltage range between the conductor (2) are exported another heat alarm by microcomputer modulator (8); When non-pyric factor make be short-circuited between two elastic metallic conductors (1) or two elastic metallic conductors (1) and conductor (2) between be short-circuited this resistance or voltage range, by microcomputer modulator (8) output short-circuit fault-signal; When three metallic conductors wherein one this resistance or voltage range are then judged output open circuit fault signal by microcomputer modulator (8) when opening circuit, the relay of microcomputer modulator (8) is judged output disconnection fault signal.
2. a kind of double temperature alarming irrecoverable type line type temperature-sensing detector according to claim 1, its terminal resistance R resistance value is preferred at 50 Ω～50M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710157969XA CN101149864A (en) | 2007-11-06 | 2007-11-06 | Double temperature alarming irrecoverable type line type temperature-sensing detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710157969XA CN101149864A (en) | 2007-11-06 | 2007-11-06 | Double temperature alarming irrecoverable type line type temperature-sensing detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101149864A true CN101149864A (en) | 2008-03-26 |
Family
ID=39250371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710157969XA Pending CN101149864A (en) | 2007-11-06 | 2007-11-06 | Double temperature alarming irrecoverable type line type temperature-sensing detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101149864A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837281A (en) * | 2016-11-15 | 2017-06-13 | 中国石油天然气股份有限公司 | Heating early warning method and device for electric heating cable |
| CN111154935A (en) * | 2020-01-06 | 2020-05-15 | 广西柳钢东信科技有限公司 | Device and system for detecting corrosion degree of molten iron runner based on cable fusing characteristic |
-
2007
- 2007-11-06 CN CNA200710157969XA patent/CN101149864A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837281A (en) * | 2016-11-15 | 2017-06-13 | 中国石油天然气股份有限公司 | Heating early warning method and device for electric heating cable |
| CN111154935A (en) * | 2020-01-06 | 2020-05-15 | 广西柳钢东信科技有限公司 | Device and system for detecting corrosion degree of molten iron runner based on cable fusing characteristic |
| CN111154935B (en) * | 2020-01-06 | 2023-05-12 | 广西柳钢东信科技有限公司 | Device and system for detecting erosion degree of molten iron runner based on cable fusing characteristics |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101017594A (en) | Multifunctional cable linear temperature sensing fire detector | |
| CN101226670B (en) | Shorted fault and alarming method for beyond-retrieve-type cable-type line-type heat fire detector | |
| CN104484973B (en) | A kind of composite cable heat fire detector | |
| CN100495458C (en) | Irrecoverable type cable type line type fixed temperature fire detector | |
| CN101046414B (en) | Composite on-off and analog quantity sensing linear temperature detector in two-chip structure | |
| CN101251943A (en) | Series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector | |
| CN101246629A (en) | Switch double-temperature alarm short-circuit fault reporting linear detector and alarm method | |
| CN100588921C (en) | Recoverable cable type linear temperature-sensing detector | |
| CN101290703B (en) | Multi-loop sectional monitoring temperature-sensing electrical signal cable type linear temperature-sensitive detector | |
| CN101188038A (en) | A separated recoverable multi-level alarming linear temperature sensing detector | |
| CN101055211B (en) | Melted NTC property resumable temperature-sensing detector | |
| CN101050983B (en) | Double temperature warning linear temperature-sensing detector | |
| CN101149864A (en) | Double temperature alarming irrecoverable type line type temperature-sensing detector | |
| CN101251944A (en) | Rapid response on-off value linear temperature-sensitive detector and alarming method | |
| CN101320506A (en) | Series connection separated recoverable linear temperature-sensitive detector | |
| CN201203924Y (en) | Past retrieve cable type linetype temperature-sensing fire disaster detector | |
| CN101685570A (en) | Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in parallel | |
| CN101276505A (en) | Switch quantity composite reparable cable-type line-type heat fire detector | |
| CN101136128A (en) | Beyond retrieve type single temperature alarming functional failure output linetype temperature-sensitive detector | |
| CN100552737C (en) | A kind of beyond retrievable linear temperature-sensing fire disaster detector short circuit fault and alarm method | |
| CN201262774Y (en) | Linetype heat detector for multi-loop sectional monitoring temperature-sensing electrical signal | |
| CN101149863B (en) | Irrecoverable type double-temperature alarming short circuit, breakage fault output line type temperature-sensing detector | |
| CN100437650C (en) | Linear temperature sensor | |
| CN101256704A (en) | Past retrieve cable type linear temperature-sensing fire disaster detector | |
| CN201083553Y (en) | Two-core structure switch signal, analog combined linear temperature-sensitive detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |