CN101685571A - Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in series - Google Patents
Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in series Download PDFInfo
- Publication number
- CN101685571A CN101685571A CN200810010392A CN200810010392A CN101685571A CN 101685571 A CN101685571 A CN 101685571A CN 200810010392 A CN200810010392 A CN 200810010392A CN 200810010392 A CN200810010392 A CN 200810010392A CN 101685571 A CN101685571 A CN 101685571A
- Authority
- CN
- China
- Prior art keywords
- normally closed
- closed type
- temperature
- switch
- conductor
- 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
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention relates to a restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in series, which mainly comprises a closed-circuit signal acquisition circuit formed by respectively connecting two ends of a temperature sensing cable with a microcomputer demodulator 4 and a terminal resistor R. The restorable linear heat detector is characterized in that the temperature sensing cable comprises two or more parallel conductors, wherein the two or more parallel conductors are connected in series with a plurality of normally open type rate-of-rise and fixed temperature switches, one of the conductors can cover an insulating material or NTC and CTR characteristic material layer, because the normally open type rate-of-rise and fixed temperature switches are heated and the temperature rise rate is more than or equal to 5 DEG C per minute, the normally open type rate-of-rise and fixed temperature switches send responses, i.e. the normally open type rate-of-rise temperature switches are closed, the microcomputer demodulator judges and outputs rate-of-rise temperature alarm signals; when the temperature exceeds the action temperature of the normally open type fixed temperature switches, the normally open type fixed temperature switches are closed, the microcomputer demodulator judges and outputs fixed temperature alarm signals, and themicrocomputer demodulator has the function of judging and outputting short-circuit, open-circuit and power-down failure alarm according to the resistance value of the temperature sensing cable and the voltage change, and can be repeatedly used.
Description
Technical field
The present invention relates to fire alarm installation, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector.
Background technology
The parallel analog linear temperature-sensing fire detecting cable of discrete thermistor of the prior art referring to Fig. 1, is surveyed in the cable at this, is made up of a plurality of thermistor element R that are connected in parallel between two detecting conductors 14,15.When being heated for a certain section that surveys cable, with the rising of temperature, the resistance value of the thermistor in this section descends (or increase), causes the all-in resistance between the detector conductor to descend (or rising), reports to the police according to the variation of all-in resistance.The shortcoming of this detection cable is alarm temperature with the length of being heated, uses length relevant, and the long alarm temperature of the length of being heated is just low, and the short alarm temperature of the length of being heated is height just.So just unfavorable to the reliability of detector, report by mistake easily.For this reason, need to propose the higher line-type heat detector of a kind of reliability.
Summary of the invention
The object of the present invention is to provide a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector, this detector mainly is connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 4 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: by two or more parallel conductor, wherein one or two are with upper conductor a plurality of normally closed differential temperatures of connecting, the different constant temperature switch, but another strip conductor coated insulation material or NTC, CTR characteristic material layer, because normally closed type differential temperature, the different constant temperature switch is heated and heating rate 〉=5 ℃/send response during min, be that normally closed type differential temperature switch opens circuit, microcomputer modulator is judged output differential temperature alerting signal, when temperature surpasses the operating temperature of normally closed type thermostatic switch, the normally closed type thermostatic switch opens circuit, microcomputer modulator is judged output constant temperature alerting signal, microcomputer modulator is according to the temperature sensing cable resistance, change in voltage is judged output short-circuit, open circuit, the disconnection fault warning function, reusable.
Compared with the prior art, the advantage that a kind of normally closed type differential temperature of connecting of the present invention, thermostatic switch renewable type line-type heat detector have is: one, normally closed type differential temperature, thermostatic switch have reversibility, after normally closed type differential temperature, the thermostatic switch of line-type heat detector are reported to the police, along with the decline of normally closed type differential temperature, thermostatic switch environment temperature, normally closed type differential temperature, thermostatic switch auto-closing return to original state; Two, alarm temperature and temperature sensing cable environment temperature, use length have nothing to do, and have overcome differential temperature in the prior art, different constant temperature warning and be heated long, the relevant shortcoming of environment temperature.
Description of drawings
Fig. 1 surveys the cable structure synoptic diagram for the parallel analog linear temperature-sensing of existing discrete thermistor;
Fig. 2～Fig. 6 is the structural representation of a kind of normally closed type differential temperature of connecting of the present invention, thermostatic switch renewable type line-type heat detector.
Embodiment
A kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector, example 1, see Fig. 2, mainly be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 4 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be by conductor 1, conductor 2, wherein a plurality of normally closed type differential temperature switches 3 of a strip conductor 2 series connection be arranged in parallel with another strip conductor 1 mutual insulating.
Above-mentioned conductor 1 with the connected mode of normally closed type differential temperature switch 3 can be: conductor 1 cooperates crimping with the two ends conductor welding or the machinery of normally closed type differential temperature switch 3, and the interval of the normally closed type differential temperature switch 3 that its series connection is provided with can be designed to 1～10 every meter.
2 one kinds of series connection of embodiment normally closed type differential temperature, thermostatic switch renewable type line-type heat detector, see Fig. 3, mainly be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 4 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be by two strip conductors 1,2, a plurality of normally closed type differential temperature switches 3 of a strip conductor 2 series connection wherein, normally closed type differential temperature switch 3 is parallel resistance R1 again, be arranged in parallel with another strip conductor 1 mutual insulating then.
Above-mentioned conductor 1 with the connected mode of normally closed type differential temperature switch 3 can be: conductor 1 cooperates crimping with the two ends conductor welding or the machinery of normally closed type differential temperature switch 3, and the interval of the normally closed type differential temperature switch 3 that its series connection is provided with can be designed to 1～10 every meter.
3 one kinds of series connection of embodiment normally closed type differential temperature, thermostatic switch renewable type line-type heat detector, see Fig. 4, mainly be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 4 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be by three strip conductors 6,2,1, wherein a plurality of normally closed type different constant temperature switches 5 of conductor 6,2 series connection be arranged in parallel with a strip conductor 1 mutual insulating.One the tunnel be the normally closed type thermostatic switch in the normally closed type different constant temperature switch 5 wherein, be connected on the conductor 6; One the tunnel is that normally closed type differential temperature switch series is associated on the conductor 2.
Above-mentioned conductor 6,2 with the connected mode of normally closed type different constant temperature switch 5 can be: conductor 6,2 cooperates crimping with the two ends conductor welding or the machinery of normally closed type different constant temperature switch 5 respectively, and the interval of the normally closed type different constant temperature switch 5 that its series connection is provided with can be designed to 1～10 every meter.
Resistance or change in voltage between the conductor 1 and 2 and 1 and 6 of microcomputer modulator 4 detection temperature sensing cables, the differential temperature switch that is heated and heating rate 〉=5 ℃/sends in the response normally closed type different constant temperature switch 5 during min when temperature sensing cable opens circuit, and microcomputer modulator 4 is judged output differential temperature alerting signals.When the temperature sensing cable heating temperature surpassed constant temperature operating temperature in the normally closed type different constant temperature switch 5, promptly the thermostatic switch of normally closed type different constant temperature switch 5 opened circuit, and microcomputer modulator 4 is judged output constant temperature alerting signals.Resistance between two conductors 1 and 2,1 and 6 of temperature sensing cable is less than the resistance of terminal resistance R, and microcomputer modulator 4 is judged output short-circuit failure alarm signals, i.e. short circuit between conductor 1 and conductor 2 or conductor 1 and the conductor 6.Normally closed type differential temperature switch 5 has reversibility, and the temperature around the normally closed type differential temperature switch 5 of detector descends, and normally closed type differential temperature switch 5 auto-closings return to original state.
4 one kinds of series connection of embodiment normally closed type differential temperature, thermostatic switch renewable type line-type heat detector, see Fig. 5, Fig. 6, mainly be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 4 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be by three strip conductors 6,2,1, a plurality of normally closed type different constant temperature switches 5 of conductor 6,2 series connection wherein, four contacts of the constant temperature of normally closed type different constant temperature switch 5, differential temperature are distinguished parallel resistance R1 again, be arranged in parallel with another strip conductor 1 mutual insulating.Wherein the part of normally closed type different constant temperature switch 5 series conductors 6 is the normally closed type thermostatic switch, and the part of series conductor 2 is a normally closed type differential temperature switch.
Above-mentioned conductor 6,2 with the connected mode of normally closed type different constant temperature switch 5 can be: conductor 6,2 cooperates crimping with the two ends conductor welding or the machinery of normally closed type different constant temperature switch 5 respectively, and the interval of the normally closed type different constant temperature switch 5 that its series connection is provided with can be designed to 1～10 every meter.
Resistance or change in voltage between the conductor 1 and 2,1 and 6 of microcomputer modulator 4 detection temperature sensing cables, when temperature sensing cable be heated and heating rate 〉=5 ℃/the send during min differential temperature switch of response normally closed type different constant temperature switch 5 opens circuit, microcomputer modulator 4 is judged output differential temperature alerting signals.When the temperature sensing cable heating temperature surpassed the constant temperature operating temperature of normally closed type different constant temperature switch 5, promptly the thermostatic switch of normally closed type different constant temperature switch 5 opened circuit, and microcomputer modulator 4 is judged output constant temperature alerting signal.Resistance between two conductors 1 and 2,1 and 6 of temperature sensing cable is less than the resistance of terminal resistance R, and microcomputer modulator is judged the output short-circuit failure alarm signal, i.e. conductor 1 and conductor 2, conductor 1 and conductor 6 one of them short circuit.When the resistance between two conductors 1 and 2,1 and 6 of temperature sensing cable was infinitely great, microcomputer modulator 4 was judged output open circuit fault alerting signals, promptly conductor 1,2,6 one of them open circuit.Normally closed type different constant temperature switch 5 has reversibility, and the temperature around the normally closed type different constant temperature switch 5 of detector of the present invention descends, and normally closed type different constant temperature switch 5 auto-closings return to original state.
The foregoing description 1～example 4, the conductor 6,2,1 that connects normally closed type differential temperature switch 3 or normally closed type different constant temperature switch 5 can be to be parallel to each other, and keeps the parallel extrusion molding of a determining deviation in NTC or CTR characteristic material or insulating material.
The foregoing description 1～example 4, conductor 6,2,1 can be distinguished or part coats NTC or CTR characteristic material layer or insulation material layer.After the coating NTC at the place of being connected in series of normally closed type differential temperature switch 3, normally closed type different constant temperature switch 5 and bonding conductor 6,2,1 or CTR characteristic material or insulation material layer remove, with expose conductor and be connected, the junction seals with insulating material then, its outer outer jacket or braiding oversheath of also can coating. Conductor 6,2,1 can be distinguished or part coats NTC or CTR characteristic material layer, can by microcomputer modulator 4 judge conductors 1 with 6 or/and resistance or change in voltage or when resistance or voltage change ratio are failed greater than a setting value at the appointed time between 1 and 2 are exported constant temperature or differential temperature alerting signal.
The foregoing description 1～example 4, the structure of temperature sensing cable can also increase by one group of analog quantity (renewable type) on the basis of embodiment 1～embodiment 4 or the on-off value linear temperature sensing cable is connected with microcomputer modulator 4.In a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector or when increasing by one group of analog quantity or on-off value linear temperature sensing cable outward, can reach the purpose of surveying the small size fire.
The foregoing description 1～example 2, a plurality of normally closed type thermostatic switches of series connection that between a plurality of normally closed type differential temperature switches 3 of conductor 2 series connection, can evenly distribute again, can also be in series connection normally closed type thermostatic switch two ends or normally closed type thermostatic switch parallel resistance or thermistor R1.
Material behavior explanation used in the present invention:
1, normally closed type differential temperature switch: send response during heating rate 〉=5 ℃/min.
2, normally closed type different constant temperature switch: send response during differential temperature heating rate 〉=5 ℃/min.The constant temperature operating temperature can be made into any one of 60 ℃, 70 ℃, 85 ℃, 105 ℃, 138 ℃, 180 ℃.
3, conductor: specification is selected for use between φ 0.2mm～φ 3mm.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.Conductor can select in the above-mentioned metal wherein one or more.
4, outer jacket: can be the wherein a kind of of high molecular polymer plastic insulation material.Also can have the specific volume resistance of NTC, CTR, ptc characteristics 10
-4～10
20Between material.
5, insulation material layer: can be the wherein a kind of of high molecular polymer plastic insulation material.Also can have the specific volume resistance of NTC, CTR, ptc characteristics 10
8～10
20Between material.
6, braiding oversheath: can be that plastic monofilament or wire diameter are preferred between 0.01～0.5mm.
7, NTC or CTR characteristic material layer: can be the wherein a kind of of high molecular polymer plastic insulation material.Also can have the specific volume resistance of NTC, CTR, characteristic 10
-4～10
16Between material.
8, resistance R 1: can be resistance or thermistor.Resistance is preferred at 50 Ω～10M Ω.
9, resistance R: resistance is preferred at 50 Ω～50M Ω.
Claims (7)
1, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector, mainly be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator (4) and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be by a wherein strip conductor (2) series connection a plurality of normally closed type differential temperature switches (3) of two strip conductors (1), (2) or three strip conductors (1), (2), (6), be arranged in parallel with another strip conductor (1) mutual insulating; Or conductor (6), (2) series connection a plurality of normally closed type different constant temperature switches (5) wherein, be arranged in parallel with another conductor (1) mutual insulating.One the tunnel be the normally closed type thermostatic switch in the normally closed type different constant temperature switch (5) wherein, the one tunnel is normally closed type differential temperature switch.
2, according to claim 1, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector is characterized in that the structure of temperature sensing cable: the interval of the normally closed type different constant temperature switch (5) that series connection is provided with can be designed to 1～10 every meter.Send response during the normally closed type differential temperature switch heating rate in the normally closed type different constant temperature switch (5) 〉=5 ℃/min; Normally closed type is decided the operating temperature of switch and can be selected for use between 60 ℃～180 ℃.
3, according to claim 1, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector is characterized in that the structure of temperature sensing cable can also be: conductor (2), (1) or (6), (2), (1) that connects normally closed type differential temperature switch (3) or normally closed type different constant temperature switch (5) can be to be parallel to each other to keep the parallel extrusion molding of a determining deviation in NTC or CTR characteristic material or insulating material.
4, according to claim 1, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector is characterized in that the structure of temperature sensing cable can also be: conductor (6), (2), (1) can be distinguished or part coats NTC or CTR characteristic material layer or insulation material layer.After the coating NTC at normally closed type differential temperature switch (3), normally closed type different constant temperature switch (5) and the place of being connected in series of conductor (6), (2), (1) or CTR characteristic material or insulation material layer remove, and expose conductor and be connected, the junction seals with insulating material then.Outermost coats outer jacket or braiding external sheath layer again.
5, described according to claim 1～4, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector is characterized in that the structure of temperature sensing cable can also be: in the outer jacket of temperature sensing cable or braiding external sheath layer or outside increase by one group of analog quantity (renewable type) or the on-off value linear temperature sensing cable is connected with microcomputer modulator (4).
6, described according to claim 1～5, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector is characterized in that the structure of temperature sensing cable can also be: normally closed type differential temperature switch (3) or normally closed type different constant temperature switch (5) be parallel resistance or thermistor R1 again.
7, according to claim 1, a kind of series connection normally closed type differential temperature, thermostatic switch renewable type line-type heat detector is characterized in that the structure of temperature sensing cable can also be: series connection a plurality of normally closed type thermostatic switches more evenly distribute between a plurality of normally closed type differential temperature switches (3) of conductor (2) series connection.Parallel resistance or thermistor R1 in outer two ends of the normally closed type thermostatic switch of can also connecting again or the normally closed type thermostatic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810010392A CN101685571A (en) | 2008-02-15 | 2008-02-15 | Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810010392A CN101685571A (en) | 2008-02-15 | 2008-02-15 | Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101685571A true CN101685571A (en) | 2010-03-31 |
Family
ID=42048709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810010392A Pending CN101685571A (en) | 2008-02-15 | 2008-02-15 | Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101685571A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104574771A (en) * | 2015-01-20 | 2015-04-29 | 江苏中实电子有限公司 | Combined type linear temperature-sensing fire detector and alarm method of combined type linear temperature-sensing fire detector |
| CN105044488A (en) * | 2015-06-15 | 2015-11-11 | 中煤科工集团上海研究院 | Serial signal detection positioning system and method |
-
2008
- 2008-02-15 CN CN200810010392A patent/CN101685571A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104574771A (en) * | 2015-01-20 | 2015-04-29 | 江苏中实电子有限公司 | Combined type linear temperature-sensing fire detector and alarm method of combined type linear temperature-sensing fire detector |
| CN104574771B (en) * | 2015-01-20 | 2017-11-14 | 江苏中实电子有限公司 | A kind of composite linear temperature-sensing fire disaster detector and its alarm method |
| CN105044488A (en) * | 2015-06-15 | 2015-11-11 | 中煤科工集团上海研究院 | Serial signal detection positioning system and method |
| CN105044488B (en) * | 2015-06-15 | 2018-05-15 | 中煤科工集团上海研究院 | A kind of serial signal detection alignment system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101164639B (en) | Recovery-free type linear temperature-sensitive detector with short-circuit fault alarm | |
| CN101017594A (en) | Multifunctional cable linear temperature sensing fire detector | |
| CN101251943A (en) | Series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector | |
| CN201138504Y (en) | Parallel line type temperature-sensing fire disaster detector with discrete temperature sensing switch serially connected with resistor | |
| CN100492427C (en) | Linear temperature sensing detector based on thermocouple principle | |
| CN101685570A (en) | Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in parallel | |
| CN101188038A (en) | A separated recoverable multi-level alarming linear temperature sensing detector | |
| CN101216979A (en) | A restorable multistage alarming line style heat detector based on bimetal temperature switch | |
| CN101046414B (en) | Composite on-off and analog quantity sensing linear temperature detector in two-chip structure | |
| CN101246629A (en) | Switch double-temperature alarm short-circuit fault reporting linear detector and alarm method | |
| CN101320506A (en) | Series connection separated recoverable linear temperature-sensitive detector | |
| CN101290703B (en) | Multi-loop sectional monitoring temperature-sensing electrical signal cable type linear temperature-sensitive detector | |
| CN100495458C (en) | Irrecoverable type cable type line type fixed temperature fire detector | |
| CN101055212B (en) | Parallel connection double metal temperature switch linear temperature-sensing detector | |
| CN101685571A (en) | Restorable linear heat detector of normally open type rate-of-rise and fixed temperature switches connected in series | |
| CN100588921C (en) | Recoverable cable type linear temperature-sensing detector | |
| CN101055211B (en) | Melted NTC property resumable temperature-sensing detector | |
| CN201262774Y (en) | Linetype heat detector for multi-loop sectional monitoring temperature-sensing electrical signal | |
| CN201117046Y (en) | Composite type simulation quantity line-type temperature-sensing fire hazard detector | |
| CN100552737C (en) | A kind of beyond retrievable linear temperature-sensing fire disaster detector short circuit fault and alarm method | |
| CN201203924Y (en) | Past retrieve cable type linetype temperature-sensing fire disaster detector | |
| CN101136128A (en) | Beyond retrieve type single temperature alarming functional failure output linetype temperature-sensitive detector | |
| CN202916947U (en) | Linear temperature sensing detector capable of detecting faults of parallel-connection bimetal temperature switches | |
| CN100426332C (en) | Short circuit warning method for non-recoverable linear temperature sensing detector | |
| CN101050983B (en) | Double temperature warning linear temperature-sensing 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 |
Open date: 20100331 |