CN205722275U - Beyond-retrieve-type cable-type line-type heat fire detector - Google Patents
Beyond-retrieve-type cable-type line-type heat fire detector Download PDFInfo
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- CN205722275U CN205722275U CN201620638678.7U CN201620638678U CN205722275U CN 205722275 U CN205722275 U CN 205722275U CN 201620638678 U CN201620638678 U CN 201620638678U CN 205722275 U CN205722275 U CN 205722275U
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Abstract
The utility model proposes the temperature sensing cable for beyond-retrieve-type cable-type line-type heat fire detector, beyond-retrieve-type cable-type line-type heat fire detector and this fire detector of use including this temperature sensing cable carry out the method that fire alarm, fire alarm and short trouble are reported to the police.This utility model is by detecting between the second detecting conductor and the 3rd detecting conductor after short circuit, thermosensitive resistance between detection the first detecting conductor and the 3rd detecting conductor is to determine temperature and the variations in temperature of temperature sensing cable further, judging to produce the reason of short circuit is breaking out of fire or by non-temperature rise fault such as physical damnifications and export fire alarm signal or short trouble alarm signal accordingly, and determines the position of breaking out of fire or short trouble.
Description
Technical field
This utility model relates to a kind of beyond-retrieve-type cable-type line-type heat fire detector, particularly has location and temperature
The beyond-retrieve-type cable-type line-type heat fire detector of degree monitoring function.
Background technology
Cable linear temperature sensing fire detector has been widely used in detection in different industries.Cable linear temperature sensing
Fire detector includes beyond retrievable and renewable type cable linear temperature sensing fire detector two kinds.
Fig. 1 is that the structure of the temperature sensing cable of a kind of currently used beyond-retrieve-type cable-type line-type heat fire detector is shown
It is intended to.This temperature sensing cable is made up of sheath 1 and at least two detecting conductors 3 being positioned at sheath 1, the outside cladding of detecting conductor 3
There is the fusible insulation material layer 2 of certain fusing point.In detecting conductor 3 at least one is elastic conductor and the most stranded.When
When the heating temperature of temperature sensing cable reaches the fusion temperature of fusible insulation material layer, the fusing of fusible insulation material layer makes detection lead
Body 3 contacts with each other under elastic force effect and is short-circuited, and reaches the purpose of fire alarm by detecting this short-circuit condition.Tool
The advantage having the fire detector of this temperature sensing cable is that fire alarm temperature is unrelated with ambient temperature and use length, can be true
Determining the position of breaking out of fire, reliability is higher, but have a disadvantage in that do not have the temperature anomaly change that monitoring fire causes in early days
The ability changed and short trouble warning function.
Fig. 2 is the structure of the temperature sensing cable of another kind of currently used beyond-retrieve-type cable-type line-type heat fire detector
Schematic diagram.This temperature sensing cable is made up of restrictive coating 4 and two detecting conductors being positioned at restrictive coating 4, and wherein detecting conductor 1 is outside
Being coated with the temperature sensing material layer 3 with sensitive characteristic, detecting conductor 2 is outside is coated with the fusible insulant with certain fusing point
Layer 5.In two detecting conductors at least one be elastic conductor.When the temperature of detecting conductor is not reaching to fusible insulation material layer
5 fusion temperature time, be state of insulation between detecting conductor 1 and 2；When the temperature of detecting conductor meets or exceeds fusible insulation material
During the fusion temperature of the bed of material 5, fusible insulation material layer 5 melts, detecting conductor 2 under elastic force effect with detecting conductor 1 outside
Temperature sensing material layer 3 makes electrical contact with.The now resistance value (i.e. the resistance value of thermosensitive temperature sensing material layer 3) between detecting conductor 1 and 2 and spy
The temperature surveying conductor is correlated with.When being risen to setting by temperature determined by this resistance value, detector sends fire alarm letter
Number.This detector has detecting conductor short trouble warning function, but cannot determine the position of breaking out of fire.
Further, above two beyond-retrieve-type cable-type line-type heat fire detector all cannot detect and get rid of when sense
Temperature cable is owing to causing erroneous trigger fire alarm when the non-temperature such as scuffing, extruding raise the fusible insulation material layer breakage caused
The situation of signal, reduces the functional reliability of fire detector.
It addition, existing beyond-retrieve-type cable-type line-type heat fire detector there is also the space of improvement further.
Summary of the invention
The purpose of this utility model is to provide a kind of beyond retrievable cable formula at least overcoming at least one defect above-mentioned
Line-type heat detector.This beyond-retrieve-type cable-type line-type heat fire detector can produce fire when breaking out of fire
Alarm signal, can also detect temperature sensing cable owing to the non-temperature such as scuffing, extruding raise the short trouble caused and produce simultaneously
Short trouble alarm signal, it is to avoid fire is reported by mistake, further determines that the position of breaking out of fire or short trouble, and can be real-time
The ANOMALOUS VARIATIONS of monitoring ambient temperature residing for temperature sensing cable and by ambient temperature with use length inaccurate to temperature monitoring
The impact of degree.
Above-mentioned purpose is by including temperature sensing cable as described below and including the beyond retrievable cable formula line of this temperature sensing cable
Sensing fire detector realizes.
The utility model proposes a kind of temperature sensing cable for beyond-retrieve-type cable-type line-type heat fire detector, described
The most external of temperature sensing cable has restrictive coating, has the first detecting conductor, the second detection being arranged in juxtaposition in described restrictive coating
Conductor and the 3rd detecting conductor, the outside temperature sensing material layer with sensitive characteristic that is coated with of described first detecting conductor, described second
Detecting conductor is outside is coated with fusible insulation material layer.
Described fusible insulation material layer by polrvinyl chloride, polypropylene, high density polyethylene (HDPE), Low Density Polyethylene, paraffin and
At least one in stearic acid is constituted.The softening of described fusible insulation material layer or fusion temperature are between 40 DEG C-180 DEG C.
Described temperature sensing material layer is made pottery by NTC thermo-sensitive material, PTC thermo-sensitive material, CTR thermo-sensitive material, conductive rubber and conduction
At least one in porcelain is constituted.
Further, outside temperature sensing material layer outside described first detecting conductor, described second detecting conductor fusible absolutely
The outside coated with conductive layer of at least one in edge material layer.Described conductive layer moulds band, metallic film, gold selected from aluminum plastic belt, copper
Belong at least one in silk mesh grid and metallic paint overlay.
Described second detecting conductor is at least mutual with the one in described first detecting conductor and described 3rd detecting conductor
Stranded.The most stranded at least one in detecting conductor is elastic conductor.
The utility model proposes a kind of beyond-retrieve-type cable-type line-type heat fire detector, this fire detector is by as above
Described temperature sensing cable, terminal resistance and signal conversion unit are constituted, in the end of described temperature sensing cable, described first detection
Terminal resistance is connected, between described second detecting conductor and described 3rd detecting conductor between conductor and described 3rd detecting conductor
Connect another terminal resistance, at the other end of described temperature sensing cable, described first detecting conductor, described second detecting conductor and
Described 3rd detecting conductor connects described signal conversion unit respectively, and described signal conversion unit is configured to described first
Between detecting conductor and described 3rd detecting conductor, the signal of telecommunication of detection is converted to indicate the information of described temperature sensing cable temperature, will
Between described second detecting conductor and described 3rd detecting conductor, the signal of telecommunication of detection is converted to indicate the warning of short-circuit condition
Information, produces fire report according to the information of described instruction described temperature sensing cable temperature and the warning message of described instruction short-circuit condition
Alert signal or short trouble alarm signal.
Described signal conversion unit is further configured to determine the position of breaking out of fire or short trouble.
Described terminal resistance is arranged in termination box.
Described signal conversion unit has the temperature for showing described temperature sensing cable and variations in temperature, described alarm signal
The display of at least one in breath, described fire alarm signal and described short trouble alarm signal or indicator.
This utility model also proposes a kind of use beyond-retrieve-type cable-type line-type heat fire detector as above and enters
The method of row fire alarm, it comprises the steps:
Detect the electric loop of the first temperature sensing passage between described second detecting conductor and described 3rd detecting conductor
Resistance value；
Institute is determined when the resistance value in the electric loop of described first temperature sensing passage equals to or less than warning resistance threshold
The electric loop stating the first temperature sensing passage is short-circuited, and detects between described first detecting conductor and described 3rd detecting conductor
The resistance value in electric loop of the second temperature sensing passage to determine temperature and the variations in temperature of described temperature sensing cable；
When the temperature of described temperature sensing cable occurs abnormal equal to or higher than the temperature of alarm temperature and described temperature sensing cable
During change, export fire alarm signal；
When the temperature of described temperature sensing cable is less than described alarm temperature or the temperature no exceptions of described temperature sensing cable
During change, output short-circuit failure alarm signal.
The method further comprises determining that the step of the position of breaking out of fire or short trouble.
This utility model also proposes a kind of use beyond-retrieve-type cable-type line-type heat fire detector as above and enters
The method of row fire alarm, it comprises the steps:
Before determining breaking out of fire, by detecting between described first temperature sensing conductor and described 3rd detecting conductor
The resistance value in electric loop of temperature sensing passage, to determine temperature and the variations in temperature of described temperature sensing cable；And
The temperature of described temperature sensing cable determined by based on and variations in temperature carry out the early warning of fire.
Compared to existing technology, fire detector of the present utility model and fire alarm or method for early warning can monitor temperature-sensitive electricity
The variations in temperature of cable, the discovery to incipient fire provides foundation, and causes detecting conductor short in the fusing of fusible insulation material layer
When connecing, it is possible to accurately judge this short circuit be cause due to breaking out of fire or owing to the non-temperature aggravating reason such as physical damage draw
That rise thus correspondingly produce fire alarm signal or short circuit fault signal, and further determine that the position of breaking out of fire or fault
Put.It addition, fire detector of the present utility model and fire alarm or method for early warning can be avoided ambient temperature, use length etc.
The factor impact on detector alarm temperature, alarm temperature is accurate, reliability is high.
Accompanying drawing explanation
Below with reference to the accompanying drawing be given by non-limiting example mode feature of the present utility model explained in detail with
And implementation, in the accompanying drawings:
Fig. 1 is that in prior art, the structure of the temperature sensing cable of a kind of beyond-retrieve-type cable-type line-type heat fire detector is shown
It is intended to；
Fig. 2 is the structure of the temperature sensing cable of another kind of beyond-retrieve-type cable-type line-type heat fire detector in prior art
Schematic diagram；
Fig. 3 is the beyond-retrieve-type cable-type line-type heat fire detector according to detailed description of the invention of the present utility model
Structural representation；And
Fig. 4 is the beyond-retrieve-type cable-type line-type heat detection according to another detailed description of the invention of the present utility model
The structural representation of device.
Detailed description of the invention
This utility model will be described more fully hereinafter with reference to the accompanying drawings, illustrate of the present utility model exemplary wherein
Embodiment.In the accompanying drawings, for the sake of clarity, thus it is possible to vary region or the relative size of feature.But, this utility model is permissible
Implement with multiple different form and should not explain the restriction to embodiment described here；On the contrary, it is provided that these are implemented
Example will make the disclosure fully and completely, and will express scope of the present utility model fully to those skilled in the art.
Should be understood that, when mentioning that element " couples " or ' attach ' to other elements, it can directly couple or connect
Intermediary element maybe can also be there is to other elements.On the contrary, when mentioning that element " directly couples " or " being directly connected to " is to other yuan
During part, there is not intermediary element.Identical numeral indicates identical element all the time.Term "and/or" includes as used herein
Arbitrarily and all combining of one or more Listed Items being associated.
Term as used herein is only used for describing specific embodiment and being not used in restriction this utility model.As made at this
, singulative " ", " one " and " being somebody's turn to do " can also include plural form, unless context clearly indicates other to contain
Justice.It should be further understood that term " includes " and/or " comprising ", when using in the description, it is intended that described feature, whole
Number, step, operation, element and/or the existence of parts, but it is not excluded for other features one or more, and integer, step, operation, unit
The existence or additional of part, parts and/or group.Express as used herein "and/or" include one or more be associated listed
Arbitrarily and all combining of entry.
Unless otherwise defined, all entries as used herein (including technology and science term) have new with this practicality
The identical implication that the those of ordinary skill of the technical field belonging to type is generally understood that.It should be further understood that term, example
Dictionary definition as usual in those, it should be construed to that there is contain consistent with the implication in the context of correlative technology field
Justice and be not construed as Utopian or the most formal meaning, unless there is clear and definite definition at this.
As it is shown on figure 3, according to the beyond retrievable with location and temperature-monitoring function of embodiment of the present utility model
Cable linear temperature sensing fire detector comprises temperature sensing cable, signal conversion unit 6 and terminal resistance 7 three part.
Temperature sensing cable is made up of outermost restrictive coating 9 and three detecting conductors 1,2 and 3 being positioned at restrictive coating.Detection
The outside cladding of conductor 1 has the temperature sensing material layer 4 of sensitive characteristic, the outside cladding of detecting conductor 2 have certain fusing point fusible absolutely
Edge material layer 5, detecting conductor 3 is as the common port of signal measurement.Detecting conductor 2 at least with in detecting conductor 1 and detecting conductor 3
The most stranded and the most stranded detecting conductor of one at least one be elastomeric material.
Fusible insulation material layer 5 can be by polrvinyl chloride, polypropylene, high density polyethylene (HDPE), Low Density Polyethylene, paraffin and hard
At least one in fat acid is constituted.This is fusible, and insulation material layer 5 can also select its softening or fusion temperature at 40 DEG C-180 DEG C
Between any fusible insulant.There is the temperature sensing material layer 4 of sensitive characteristic by NTC thermistor, PTC thermistor, CTR
At least one material in critesistor, conductive rubber and conductivity ceramics is constituted.
At least one in the temperature sensing material layer outside detecting conductor 1, the fusible insulation material layer outside detecting conductor 2
Outside can be with coated with conductive layer.This conductive layer is selected from aluminum plastic belt, copper moulds band, metallic film, woven wire cloth and gold
Belong at least one in paint overlay.
Add conductive layer purpose be, it is ensured that the thermosensitive temperature sensing material layer outside detecting conductor 1 respectively with detecting conductor 2
And the excellent electric contact between detecting conductor 3, it is to avoid the thermosensitive temperature sensing material layer outside detecting conductor 1 is led with detection
Body 3 electrical-contact area is little and causes the critesistor rate of change between detecting conductor 1 and detecting conductor 3 relatively low and cannot measure,
And the part fusing of fusible insulation material layer cause cannot short circuit between detecting conductor 1 and detecting conductor 2.
At the end of temperature sensing cable, respectively between detecting conductor 1 and detecting conductor 3 and detecting conductor 2 and detecting conductor 3
Between connect terminal resistance 7.Based on three detecting conductors, the resistance of two resistance can be identical, it is also possible to different.Terminal resistance
7 can also exist with the termination box form comprising terminal resistance.
Two temperature sensing passages are constituted between detecting conductor 1 and detecting conductor 3, detecting conductor 2 and detecting conductor 3.Letter
Number converting unit 6 timesharing or monitor the state of the two temperature sensing passage in real time.Can also have aobvious on signal conversion unit 6
Show device or indicator elment, for showing the current state information of temperature sensing cable, including ambient temperature, the fire alarm of temperature sensing cable
Signal, short trouble alarm signal, breaking out of fire or the position of short trouble or the distance etc. to signal conversion unit.
The of the present utility model beyond-retrieve-type cable-type line-type heat with location and temperature-monitoring function is described below
The work process of fire detector.
After the temperature sensing cable of fire detector has been connected up, signal conversion unit 6 timesharing or in real time two temperature of monitoring
The state of the electric loop signal of detection channels.Now the resistance value in the electric loop between detecting conductor 2 and detecting conductor 3 is detection
The summation of the resistance value of conductor 2 and the respective resistance value of detecting conductor 3 and terminal resistance R1.
When temperature around temperature sensing cable is not higher than the fusion temperature of fusible insulation material layer 5, detecting conductor 2 and detection
Being not turned between conductor 3, resistance value R in the electric loop between them is constant.And the heat between detecting conductor 1 and detecting conductor 3
Sensitive adiabator layer 4 reduces along with the rising of temperature, signal conversion unit 6 monitor in real time detecting conductor 1 and detecting conductor 3 it
Between the resistance value in electric loop and be converted to temperature value and variations in temperature exports in real time or shows over the display, for the morning of fire
Phase finds and early warning provides foundation.
When fire occurs, when the temperature around temperature sensing cable is increased to make fusible insulation material layer 5 melt, the most stranded
Detecting conductor 2 make electrical contact with under elastic force effect with detecting conductor 3 and cause short circuit.Now between detecting conductor 2 and detecting conductor 3
The resistance value in electric loop be the position that is short-circuited to the resistance value of two detecting conductors between signal conversion unit 6
With, certainly less than the initial value of the resistance in electricity loop.Signal conversion unit 6 detects that the resistance value in this electricity loop is permissible after declining
The position being short-circuited is determined by equation below:
R=(r2+r3) * LX
Wherein R is the resistance value (ohm) between detecting conductor 2 and detecting conductor 3, and r2 is the unit length of detecting conductor 2
Resistance (ohm/meter), r3 is the resistance per unit length (ohm/meter) of detecting conductor 3, and LX is that signal conversion unit 6 is short to producing
The distance (rice) of the position on road.
By measuring resistance value R between detecting conductor 2 and detecting conductor 3, i.e. can determine that signal conversion unit 6 is to occurring
Distance LX of the position of short circuit:
LX=R/ (r2+r3)
But, by the detection of the signal of telecommunication in the electric loop between detecting conductor 2 and detecting conductor 3, only can determine that away from
Two from LX position conductors are short-circuited, and can not determine the reason causing this short circuit.
Short circuit reason will be sentenced by the monitoring information of the temperature sensing passage between detecting conductor 1 and detecting conductor 3
Disconnected.Signal conversion unit 6 is become by the electric loop resistance of the temperature sensing passage between detection detecting conductor 1 and detecting conductor 3
Change can obtain temperature and the temperature information of temperature sensing cable.
When detecting conductor 3 outside is not coated with fusible insulation material layer, between detecting conductor 1 and detecting conductor 3, there is heat
The resistance of the temperature sensing material layer 4 of quick characteristic changes along with the variations in temperature of temperature sensing cable.When temperature sensing cable is due to heating temperature
During rising, the resistance of temperature sensing material layer 4 declines, and signal conversion unit 6 monitors the electricity between detecting conductor 1 and detecting conductor 3
The resistance value in loop declines and is converted into temperature value and/or variations in temperature, shows the display at signal conversion unit 6
On.
The resistance variations in electric loop between detecting conductor 1 and detecting conductor 3 is monitored by signal conversion unit 6, permissible
Monitor the temperature changing trend of temperature-sensitive cable in real time.When different apparently higher than ambient temperature or its temperature of the temperature of temperature-sensitive cable
When often changing, synchronization is presented this change or this Parameters variation is exported external equipment by the display of signal conversion unit 6,
Early discovery for fire provides foundation.Wherein, the ANOMALOUS VARIATIONS of the temperature of so-called temperature sensing cable, refer to the fast of its temperature
Speed fluctuation or rising, or to be faster than velocity perturbation or the rising of variation of ambient temperature.
When a fire, the electric loop between detecting conductor 2 and detecting conductor 3 is short-circuited.Detecting conductor 1 and detection
The resistance value in the electric loop between conductor 3 is up to the warning resistance threshold set, the sense simultaneously changed by signal conversion unit 6
The temperature of temperature cable also meets or exceeds the alarm temperature of setting, and the variations in temperature of the temperature sensing cable monitored occurs abnormal.
Alarm temperature can be set equal to or higher than the fusing point of fusible insulation material layer 5 outside detecting conductor 2, resistance of i.e. reporting to the police
Threshold value is equal to or less than the electric loop between detecting conductor 1 and the detecting conductor 3 corresponding with the fusing point of fusible insulation material layer 5
Resistance value.
And when the fusible insulation material layer 5 detecting conductor 2 outside of temperature sensing cable owing to scratching, damaged, extrude, aging etc.
When non-temperature aggravating reason causes damage that detecting conductor 2 and detecting conductor 3 are made electrical contact with, the temperature of the temperature-sensitive cable now detected
Degree is less than the alarm temperature set, or the temperature of temperature-sensitive cable does not occur ANOMALOUS VARIATIONS.Signal conversion unit 6 will be the most logical
Cross indicator and produce short trouble alarm signal, simultaneously by measuring the electricity in the electric loop between detecting conductor 2 and detecting conductor 3
Resistance determine the location of fault that is short-circuited to the distance between signal conversion unit 6 to position this trouble point.
Signal conversion unit 6 is configured with and is capable of the electricity of detection between detecting conductor 1 and detecting conductor 3
Signal is converted to indicate temperature sensing cable temperature and/or the information of variations in temperature, will examine between detecting conductor 2 and detecting conductor 3
The signal of telecommunication surveyed is converted to indicate the warning message of short-circuit condition, according to indicating described temperature sensing cable temperature and/or variations in temperature
Information and the warning message of instruction short-circuit condition produce fire alarm signal or short trouble alarm signal, and determine generation
The structure of the position of fire or short trouble.Signal conversion unit 6 can include by such as processor, microprocessor, CPU,
DSP, controller, microcontroller, signal amplification circuit, signal comparator circuit or be capable of the parts of above-mentioned functions, and will
Said temperature information, warning message and alarm signal show on display or indicator and output being correlated with to miscellaneous equipment
Parts.
Therefore, when the electric loop between detecting conductor 2 and detecting conductor 3 is short-circuited, can lead in conjunction with based on detection
Temperature and the variations in temperature of temperature-sensitive cable determined by the resistance variations in the electric loop between body 1 and detecting conductor 3 determine this
Whether short circuit is to be caused by fire or the short trouble risen by non-temperature, it is to avoid fire is reported by mistake.
If during it addition, be also coated with fusible insulation material layer outside detecting conductor 3, the temperature at temperature sensing cable reaches can
Before the fusing point of molten insulation material layer, between detecting conductor 1 and detecting conductor 3, it is in state of insulation, therefore will be unable to monitoring sense
Temperature cable temperature changing trend before breaking out of fire.But, the fusible insulation when fire occurs, outside detecting conductor 3
Material layer also can melt so that the resistance value in the electric loop between detecting conductor 1 and detecting conductor 3 is reduced to threshold resistance, therefore
Still temperature or the temperature of temperature sensing cable can be judged by the electric loop resistance value between detection detecting conductor 1 and detecting conductor 3
Degree changes thus judges that the short circuit between detecting conductor 2 and detecting conductor 3 is by fire or the short circuit event risen by non-temperature
Barrier causes.
Fig. 4 illustrates another embodiment of the beyond-retrieve-type cable-type line-type heat fire detector of the application.Shown in Fig. 3
Embodiment compare, outside is coated with the temperature sensing material with sensitive characteristic of such as NTC thermo-sensitive material by this embodiment further
The detecting conductor 1 of layer 4 and detecting conductor 3 be arranged in parallel and are jointly covered by as in the aluminum plastic belt 8 of conductive layer, the most again
The detecting conductor 2 being coated with fusible insulation material layer 5 with outside is the most stranded.In the present embodiment, detecting conductor 1 and 2 is all
Elastic conductor, and detecting conductor 2 is the most stranded with the entirety that detecting conductor 1 and detecting conductor 3 are formed.As an alternative, at it
In its embodiment, detecting conductor 2 can also be the most stranded with detecting conductor 1 and detecting conductor 3, and the most stranded detection is led
At least one in body is elastic conductor.
Detecting conductor 1 and 3 forms the independent temperature detection channels of the temperature for monitoring temperature sensing cable.When breaking out of fire or
When causing the fusible insulation material layer 5 outside detecting conductor 2 to melt due to non-temperature risings such as external force or be damaged, detecting conductor 2
Contacting with the aluminum plastic belt 8 of conduction, and aluminum plastic belt 8 contacts with detecting conductor 3 so that detecting conductor 2 and 3 make electrical contact with cause them it
Between temperature sensing passage electric loop short circuit.
The principle that the embodiment of Fig. 4 is reported to the police for the temperature monitoring of temperature sensing cable and fire and short trouble and flow process with
Embodiment illustrated in fig. 3 is similar to, and is not described in detail in this.
Therefore, the beyond-retrieve-type cable-type line-type heat fire with location and temperature-monitoring function of the present utility model is visited
Surveying device compared to existing technology, it can monitor the variations in temperature of temperature sensing cable, has the temperature anomaly causing incipient fire and becomes
The function for monitoring changed, the discovery to incipient fire provides foundation, and causes detecting conductor short in the fusing of fusible insulation material layer
When connecing, it is possible to accurately differentiate this short circuit be cause due to breaking out of fire or owing to the non-temperature aggravating reason such as physical damage draw
That rise thus correspondingly produce fire alarm signal or short trouble alarm signal, and further determine that breaking out of fire or short circuit therefore
The position of barrier, it is simple to processing in time and the maintenance of detector of accident.It addition, fire detector of the present utility model can be avoided
The factor impacts on detector alarm temperature such as ambient temperature, use length, alarm temperature is accurate, reliability is high, and when temperature
When degree rises to setting value, also there is the temperature display function of heating section.
Specific embodiment described in the description be merely illustrative and not as to this utility model protection domain
Restriction.Although it have been described that exemplary embodiment of the present utility model, but the person skilled in the art will easily understand at this
Modify and modification without departing from the basis of this utility model teaching exemplary embodiment in matter, and all this amendments will
It is included in the range of this utility model.Protection domain of the present utility model will be by claims and arbitrarily with all
Equivalent technical solutions is given.
Claims (11)
1. the temperature sensing cable for beyond-retrieve-type cable-type line-type heat fire detector, it is characterised in that described temperature-sensitive
The most external of cable has restrictive coating, has the first detecting conductor, the second detecting conductor being arranged in juxtaposition in described restrictive coating
With the 3rd detecting conductor, the outside cladding of described first detecting conductor has the temperature sensing material layer of sensitive characteristic, described second detection
Conductor is outside is coated with fusible insulation material layer.
2. temperature sensing cable as claimed in claim 1, it is characterised in that described fusible insulation material layer by polrvinyl chloride, poly-third
At least one in alkene, high density polyethylene (HDPE), Low Density Polyethylene, paraffin and stearic acid is constituted.
3. temperature sensing cable as claimed in claim 1, it is characterised in that the softening of described fusible insulation material layer or fusion temperature
Between 40 DEG C-180 DEG C.
4. temperature sensing cable as claimed in claim 1, it is characterised in that described temperature sensing material layer is by NTC thermo-sensitive material, PTC warm
At least one in quick material, CTR critesistor, conductive rubber and conductivity ceramics is constituted.
5. temperature sensing cable as claimed in claim 1, it is characterised in that the temperature sensing material layer described first detecting conductor outside with
The outside coated with conductive layer of at least one in fusible insulation material layer outside described second detecting conductor.
6. temperature sensing cable as claimed in claim 5, it is characterised in that described conductive layer moulds band, metal foil selected from aluminum plastic belt, copper
At least one in film, woven wire cloth and metallic paint overlay.
7. temperature sensing cable as claimed in claim 1, it is characterised in that described second detecting conductor at least detects with described first
One in conductor and described 3rd detecting conductor is the most stranded.
8. temperature sensing cable as claimed in claim 7, it is characterised in that the most stranded at least one in detecting conductor is bullet
Property conductor.
9. a beyond-retrieve-type cable-type line-type heat fire detector, it is characterised in that this fire detector is wanted by such as right
The temperature sensing cable described in any one in 1 to 8, terminal resistance and signal conversion unit is asked to constitute, at the one of described temperature sensing cable
At end, between described first detecting conductor and described 3rd detecting conductor, connect terminal resistance, described second detecting conductor and institute
State and connect another terminal resistance between the 3rd detecting conductor, at the other end of described temperature sensing cable, described first detecting conductor,
Described second detecting conductor and described 3rd detecting conductor connect described signal conversion unit, described signal conversion unit quilt respectively
It is configured to be converted to indicate described sense by the signal of telecommunication of detection between described first detecting conductor and described 3rd detecting conductor
Temperature cable temperature and the information of variations in temperature, by the electricity of detection between described second detecting conductor and described 3rd detecting conductor
Signal is converted to indicate the warning message of short-circuit condition, according to described instruction described temperature sensing cable temperature and the information of variations in temperature
Fire alarm signal or short trouble alarm signal is produced with the warning message of described instruction short-circuit condition.
10. fire detector as claimed in claim 9, it is characterised in that described signal conversion unit is further configured to
Determine the position of breaking out of fire or short trouble.
11. fire detectors as claimed in claim 9, it is characterised in that described signal conversion unit has for showing
State temperature and variations in temperature, described warning message, described fire alarm signal and the described short trouble alarm signal of temperature sensing cable
The display of at least one in number or indicator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620638678.7U CN205722275U (en) | 2016-06-24 | 2016-06-24 | Beyond-retrieve-type cable-type line-type heat fire detector |
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| CN201620638678.7U CN205722275U (en) | 2016-06-24 | 2016-06-24 | Beyond-retrieve-type cable-type line-type heat fire detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545692A (en) * | 2016-06-24 | 2018-01-05 | 首安工业消防有限公司 | Beyond-retrieve-type cable-type line-type heat fire detector |
| CN107842262A (en) * | 2017-11-27 | 2018-03-27 | 深圳市鑫神科技开发有限公司 | A kind of disconnection method and disconnected device |
-
2016
- 2016-06-24 CN CN201620638678.7U patent/CN205722275U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545692A (en) * | 2016-06-24 | 2018-01-05 | 首安工业消防有限公司 | Beyond-retrieve-type cable-type line-type heat fire detector |
| CN107545692B (en) * | 2016-06-24 | 2023-12-19 | 首安工业消防有限公司 | Unrecoverable cable type linear temperature-sensing fire disaster detector |
| CN107842262A (en) * | 2017-11-27 | 2018-03-27 | 深圳市鑫神科技开发有限公司 | A kind of disconnection method and disconnected device |
| CN107842262B (en) * | 2017-11-27 | 2021-01-01 | 深圳市鑫神科技开发有限公司 | Disconnecting method and disconnector |
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