CN105809876B - A kind of line type temperature-sensitive detection cable - Google Patents
A kind of line type temperature-sensitive detection cable Download PDFInfo
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- CN105809876B CN105809876B CN201610301318.2A CN201610301318A CN105809876B CN 105809876 B CN105809876 B CN 105809876B CN 201610301318 A CN201610301318 A CN 201610301318A CN 105809876 B CN105809876 B CN 105809876B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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Abstract
Line-type heat detector provided by the invention is set together using two detecting conductors wherein one and the contact of meltable conductor, and the line type temperature-sensitive detection cable structure that netted insulating layer is constituted is set between wherein another detecting conductor, the softening point temperature of netted insulating layer is relatively high, meltable conductor hardness is much stronger than fused insulating layer hardness in the prior art, detecting conductor uses normal metal conductors simultaneously, does not use elastic wire in the prior art.Not only be greatly reduced in line type temperature-sensitive detection cable two detecting conductor stranding process in or line style heat detection cable cladding cable jacket extrusion process in shorted contacts probability；And it greatly reduces line type temperature-sensitive and detects the probability that cable mechanical external force effect during transport or use causes accidental damage.In addition, in order to efficiently differentiate two kinds of situations of fire alarm and short-circuit alarming that above-mentioned line type temperature-sensitive detects cable, the present invention also provides at least one in two detecting conductors that line type temperature-sensitive detects cable to be previously provided with temperature coefficient materials layer or semiconductor material layer.
Description
Technical field
The invention belongs to fire alarm technique fields, and cable is detected more particularly to a kind of line type temperature-sensitive.
Background technology
Line-type heat detector is divided into renewable type and beyond retrievable two extensively using fire detection alarm field
Major class.A kind of irrecoverable line type temperature-sensitive fire alarmed with short trouble is disclosed in Chinese Patent No. 200620133478.2
Fire detector, the detector can distinguish short trouble and the short-circuit two kinds of situations of fire.It include line type temperature-sensitive detection cable and
The connected signal processing unit of one end and its other end connect termination box, and line type temperature-sensitive detection cable thereon includes at least two
The detecting conductor and fused insulating layer of the twisted setting of root, it further includes semiconductor layer that the line type temperature-sensitive, which detects cable, wherein institute
It states semiconductor material layer and fused insulating layer is arranged between two conductors, to separate the detecting conductor.
Chinese utility model patent (patent No. ZL200520113373.6), disclosing a kind of have fusible or can melt insulation
The analogue linear temperature-sensing detector of layer, by two detecting conductors, NTC characteristics plastic layer, insulating layer, resistance signal measuring device
Composition, the detecting conductor described in two twist together, and it is special that the NTC has been superposed between two detecting conductors
Property the plastic layer and insulating layer, the fusing of the insulating layer or softening temperature region are 40 DEG C -120 DEG C.
First, fused insulating layer is arranged at two in the line type temperature-sensitive detection cable of above-mentioned line-type heat detector
It is relatively soft in the case of room temperature between detecting conductor, it is not only twisted together in two detecting conductors during processing
It is susceptible to the detecting conductor adjacent with fused insulating layer when wire stranding and semiconductor layer occurs or NTC characteristic plastic layers office
Portion's point contact phenomenon；Secondly equally occur and fusible insulation in the extrusion molding process that line style heat detection cable coats oversheath
Partial points contact phenomena occurs for layer adjacent detecting conductor and semiconductor layer or NTC characteristic plastic layers；To cause line type temperature-sensitive
The processing technology for detecting cable requires difficulty big, and product qualified rate is very low.In addition, the line-type heat detector in order to ensure
Fire alarm is exported in case of fire, an at least root uses elastic conductor in the detecting conductor of line type temperature-sensitive detection cable,
It such as elastic wire, not only results in that heat detection cable is too hard, and construction is inconvenient in this way, is easy to make under mechanical external force effect
It is damaged at the local fused insulating layer of heat detection cable, to cause detector can not normal operation progress fire spy
It surveys.
Invention content
To solve the above-mentioned problems, it include two parallel the purpose of the present invention is to provide a kind of line type temperature-sensitive detection cable
Or twisted setting detecting conductor, a netted insulating layer, meltable conductor and enclosed type oversheath；Wherein two detecting conductors wherein one
Root and the contact of meltable conductor are set together, and netted insulating layer is arranged between wherein another detecting conductor.
It includes two parallel or twisted setting detecting conductors, two netted insulation to provide another line type temperature-sensitive detection cable
Layer, meltable conductor and enclosed type oversheath；A netted insulating layer is wherein respectively provided between two detecting conductors and meltable conductor, and
It is separated by least one netted insulating layer between two detecting conductors.
Line type temperature-sensitive detection cable described above, which is further improved, is：Two in the line type temperature-sensitive detection cable
Detecting conductor is coaxially disposed together, and China and foreign countries' detecting conductor is enclosed type detecting conductor layer, cancels the enclosed type oversheath.
Preferably, the outer detecting conductor, which is aluminium strip, aluminium foil, copper strips, copper foil, at least inside, the aluminum plastic belt or extremely of aluminium
There is the copper modeling band of copper material in few inside.
Preferably, the melting point temperature of the meltable conductor is within 40 DEG C~200 DEG C ranges；The netted insulating layer
Softening point temperature is chosen within 80 DEG C~250 DEG C ranges.
Preferably, the meltable conductor is interrupted or continuous, wherein the meltable conductor length being discontinuously arranged is 0.001~1
Rice range within choose, and between each section of meltable conductor along line style temp.-sensing wire cable cable axial spacing within 0.001~1 meter of range
It chooses.
Preferably, the meltable conductor is fusible alloy material.
Preferably, the meltable conductors cross is rectangle, circle, ellipse or rectangular, and thickness is in 0.1~2 milli
It is chosen within rice range.
Preferably, the netted insulating layer by polyethylene, polypropylene, polyvinyl chloride, nylon and polytetrafluoroethylene (PTFE) at least
One kind is made, or by least one of dacron thread, spandex thread, polypropylene fiber silk, nylon yarn, cotton thread, linen thread, Si Mao and carbon fiber wire
It weaves, thickness is chosen within 0.1~2 millimeter of range.
In order to solve the indistinguishable short trouble of line type temperature-sensitive detection cable of structure described above and asking for fire alarm
Topic, line type temperature-sensitive detection cable described above, which is further improved, is：Two detecting conductors are extremely in line type temperature-sensitive detection cable
Few one increases by one temperature coefficient materials layer of cladding or semiconductor material layer in advance.
Preferably, the temperature coefficient materials are PTC, NTC or CTR temperature-coefficient of electrical resistance elastomeric material, and thickness is 0.1
It is chosen within~5 millimeters of ranges.
Preferably, the melting point temperature of the meltable conductor is within 40 DEG C~200 DEG C ranges；The netted insulating layer
Softening point temperature is chosen within 80 DEG C~250 DEG C ranges.
Preferably, the meltable conductor is interrupted or continuous, wherein the meltable conductor length being discontinuously arranged is 0.001~1
Rice range within choose, and between each section of meltable conductor along line style heat detection cable axial spacing 0.001~1 meter of range with
Interior selection.
Preferably, the meltable conductor is made of fusible alloy material.
Line type temperature-sensitive detection cable provided by the invention is set using two detecting conductors wherein one and the contact of meltable conductor
It sets together, and the line type temperature-sensitive that netted insulating layer is constituted is set between wherein another detecting conductor and detects cable structure,
The softening point temperature of netted insulating layer is relatively high, and meltable conductor hardness is much better than fusible insulation in the prior art under room temperature
Layer hardness, while detecting conductor does not use elastic wire in the prior art, using normal metal conductors, such as copper wire, tin-coated steel
Silk, galvanized wire etc., be not only greatly reduced in this way line type temperature-sensitive detection cable two detecting conductor stranding process in or
The probability of shorted contacts in the cladding cable jacket extrusion process of line style heat detection cable；And greatly reduce line
Mechanical external force effect during transport or use of type heat detection cable causes the probability of accidental damage.In addition, in order to more have
Two kinds of situations of fire alarm and short-circuit alarming of above structure line type temperature-sensitive detection cable are distinguished on effect ground, and the present invention also provides line styles
At least one has additional temperature coefficient materials layer or semiconductor material layer in advance in two detecting conductors of heat detection cable.
Description of the drawings
Fig. 1 is heat detector structural schematic diagram disclosed in the prior art.
Fig. 2 is that the run-in index line type temperature-sensitive that the embodiment of the present invention one provides detects one of cable axial arrangement schematic diagram.
Fig. 3 is that line type temperature-sensitive shown in Fig. 2 detects cable cross-sectional structure schematic diagram.
Fig. 4 is the two axial arrangement schematic diagrames that the run-in index line type temperature-sensitive that the embodiment of the present invention one provides detects cable.
Fig. 5 is that line type temperature-sensitive shown in Fig. 4 detects cable cross-sectional structure schematic diagram.
Fig. 6 is that the twisting type line type temperature-sensitive that the embodiment of the present invention one provides detects one of cable axial arrangement schematic diagram.
Fig. 7 is that line type temperature-sensitive shown in fig. 6 detects cable cross-sectional structure schematic diagram.
Fig. 8 is the two axial arrangement schematic diagrames that the twisting type line type temperature-sensitive that the embodiment of the present invention one provides detects cable.
Fig. 9 is that line type temperature-sensitive shown in Fig. 8 detects cable cross-sectional structure schematic diagram.
Figure 10 is that the coaxial-type line type temperature-sensitive that the embodiment of the present invention one provides detects cable cross-sectional structure schematic diagram.
Figure 11 is that run-in index line type temperature-sensitive provided by Embodiment 2 of the present invention detects cable cross-sectional structure schematic diagram.
Figure 12 is that provided by Embodiment 2 of the present invention parallel or twisting type line type temperature-sensitive detects the signal of cable cross-sectional structure
Figure.
Figure 13 is that coaxial-type line type temperature-sensitive provided by Embodiment 2 of the present invention detects cable cross-sectional structure schematic diagram.
Figure 14 is that the twisting type line type temperature-sensitive that the embodiment of the present invention three provides detects one of cable axial arrangement schematic diagram.
Figure 15 is that line type temperature-sensitive shown in Figure 14 detects cable cross-sectional structure schematic diagram.
Figure 16 is the two axial arrangement schematic diagrames that the twisting type line type temperature-sensitive that the embodiment of the present invention three provides detects cable.
Figure 17 is that line type temperature-sensitive shown in Figure 16 detects cable cross-sectional structure schematic diagram.
Specific implementation mode
Line-type heat detector provided by the invention is described in detail below in conjunction with the drawings and specific embodiments below, but this
The protection domain of invention is not limited to the following contents.
Embodiment one
As shown in Figure 2,3, respectively one of run-in index line type temperature-sensitive provided in this embodiment detection cable axial arrangement and
Cross-sectional structure schematic diagram, line-type heat detector include that line type temperature-sensitive detection cable detects line with line type temperature-sensitive is connected to
The signal processing unit (not shown) and terminal resistance (not shown) at cable both ends；Wherein line type temperature-sensitive detects cable master
Will by the axially stacking parallel detecting conductor 11,13 equipped with together with netted insulating layer 15 and meltable conductor 16 between two, and
The enclosed type oversheath 17 being coated on outside it forms.The resistance value R of wherein terminal resistance is preferably 100 Ω~20M Ω.
Now line-type heat detector operation principle provided by the invention is described below：
Under normal circumstances, i.e., fire does not occur, also without failure in the case of, meltable conductor 16 also stands intact, with net
In the case that shape insulating layer 15 separates detecting conductor 11,13, ignore the resistance value of detecting conductor 11,13, at this moment signal processing unit
Detection resistance value r to line type temperature-sensitive detection cable detection is the resistance value R, i.e. r=R of terminal resistance.
When there is open circuit fault, as open circuit occurs for line type temperature-sensitive detection cable somewhere (in detecting conductor 11 and 13 at least
Piece generation open circuit etc.), meltable conductor 16 still remains intact at this time, separates detecting conductor 11,13 with netted insulating layer 15, still
Open circuit occurs for the circuit somewhere that detecting conductor 11,13 and terminal resistance R are formed.Therefore, at this time signal processing unit to line style sense
The detection resistance value r of temperature detection cable is infinity, and at this moment signal processing unit exports open circuit fault signal.
When a fire, that is, increased when line type temperature-sensitive detects cable heat affected zone temperature, reach meltable conductor 16
Fusion temperature when, can meltable conductor 16 melt approximate liquid, in 17 wrapping layer of surface tension, gravity and enclosed type oversheath
Under pressure, the meltable conductor of liquid 16 infiltrates netted insulating layer 15, and across netted insulating layer 15 press to both sides detecting conductor 11,
13, as a result cause two detecting conductors to melt localized contact by meltable conductor 16, at this moment, signal processing unit detects line style sense
The detection resistance value r of temperature detection cable is approximately zero.At this moment signal processing unit exports fire alarm signal.
As shown in Figure 4,5, respectively two axial arrangements of run-in index line type temperature-sensitive provided in this embodiment detection cable and
Cross-sectional structure schematic diagram.Line type temperature-sensitive detects cable processing technology：Meltable conductor 16 and detecting conductor 11 are contacted first
Be set together, then netted insulating layer 15 is arranged in parallel with detecting conductor 13 again together with, finally coat outside enclosed type and protect
Set 17.Wherein netted insulating layer 15 separates detecting conductor 13 and the insulation of detecting conductor 11 and meltable conductor 16.Its operation principle
It is identical as above-mentioned operation principle.
As shown in Figure 6,7, respectively one of twisting type line type temperature-sensitive provided in this embodiment detection cable axial arrangement and
Cross-sectional structure schematic diagram.Line type temperature-sensitive detects cable processing technology：First by netted insulating layer 15 from wire stranding machine capstan winch
Heart hole is extracted out, and netted insulating layer does not rotate；Then a core, detecting conductor 13 are used as after detecting conductor 11 and Yi Rong conductors 16 and conjunction
As another core, respectively from the symmetrical both ends of the hole extraction of wire stranding machine capstan winch, as the rotation of wire stranding machine capstan winch surrounds netted insulating layer
15 rotations are twisted integral；Finally cladding enclosed type sheath 17.Wherein netted insulating layer 15 is by detecting conductor 13 and detecting conductor
11 and meltable conductor 16 insulation separate.Its operation principle is identical as above-mentioned operation principle.
As shown in Figure 8,9, respectively two axial arrangements of twisting type line type temperature-sensitive provided in this embodiment detection cable and
Cross-sectional structure schematic diagram.Line type temperature-sensitive detects cable processing technology：First in the netted insulating layer of 13 outer cladding of detecting conductor
15；Then a core is used as by detecting conductor 11 and Yi Rong conductors 16 and after closing, and around the spy by being coated with netted insulating layer 15
Another core that conductor 13 is constituted is surveyed, respectively from the symmetrical both ends of the hole extraction of wire stranding machine capstan winch, is rotated as wire stranding machine capstan winch rotates
It is twisted integral；Finally cladding enclosed type oversheath 17.Wherein netted insulating layer 15 by detecting conductor 13 and detecting conductor 11 and
The insulation of meltable conductor 16 separates.Its operation principle is identical as above-mentioned operation principle.
As shown in Figure 10, it is that coaxial-type line type temperature-sensitive provided in this embodiment detects cable cross-sectional structure schematic diagram.Line
Type heat detection cable processing technology is：First in the netted insulating layer of 13 outer cladding of detecting conductor 15；Then will conductor 16 easily be melted
With the detecting conductor 13 for being coated with hole barrier layer 15 and after being combined, detecting conductor 11 is externally wrapped with or wrapped up (again at it
Claim outer detecting conductor).Wherein detecting conductor 11, which can be aluminium strip, aluminium foil, copper strips, copper foil, at least inside, the aluminium of aluminium
Modeling band or at least inside have the copper modeling band of copper material is equal to have the conductor material closed and coated.Its operation principle and above-mentioned operation principle
It is identical.
The line type temperature-sensitive of various different structures described above detects cable, there is following problem：
1, since detecting conductor 11 and the contact of meltable conductor 16 are set together, when broken string situation occurs for detecting conductor 11
Under, there may be defects the problem of can not detecting open circuit fault for detector.
When 2, exporting fire alarm signal due to signal processing unit, the detection resistance value of line style heat detection cable is detected
R is approximately zero, and it is one that this detection resistance value r occurred between detecting conductor 11,13 under short circuit fault condition, which is also approximately at zero,
Sample, therefore short trouble and fire condition cannot be distinguished.
Embodiment two
Open circuit fault can not be detected in order to solve the problems, such as that detector described in embodiment one can not detect detecting conductor 11,
To carry out being further improved in structure to above-mentioned line type temperature-sensitive detection cable, it is described as follows：
As shown in figure 11, it is that run-in index line type temperature-sensitive provided in this embodiment detects cable cross-sectional structure schematic diagram, line
Type heat detector includes line type temperature-sensitive detection cable and the signal processing list for being connected to line type temperature-sensitive detection cable both ends
First (not shown) and terminal resistance (not shown)；Wherein line type temperature-sensitive detection cable is mainly disposed in parallel by two
Detecting conductor 11,13, it is axial in-between to be sequentially overlapped equipped with netted insulating layer 15 ' in parallel, meltable conductor 16 and net
Shape insulating layer 15, and the outermost enclosed type oversheath 17 of cladding form.
As shown in figure 12, it is that twisted or run-in index line type temperature-sensitive provided in this embodiment detects the signal of cable cross-sectional structure
Figure, line-type heat detector include line type temperature-sensitive detection cable and are connected at the signal at line type temperature-sensitive detection cable both ends
Manage unit (not shown) and terminal resistance (not shown)；Wherein line type temperature-sensitive detection cable mainly by two it is parallel or
Twisted setting and be respectively coated by netted insulating layer 15 ', 15 detecting conductor 11,13, and with meltable conductor 16 it is parallel together or
Twisted setting, and the outermost enclosed type oversheath 17 of cladding form.
As shown in figure 13, it is that coaxial-type line type temperature-sensitive provided in this embodiment detects cable cross-sectional structure schematic diagram, line
Type heat detector includes line type temperature-sensitive detection cable and the signal processing list for being connected to line type temperature-sensitive detection cable both ends
First (not shown) and terminal resistance (not shown)；Wherein line type temperature-sensitive detects cable mainly by being coated with netted insulation
The detecting conductor 13 of layer 15 it is parallel with meltable conductor 16 or it is twisted be set together, and successively in the netted insulating layer of its outer cladding
15 ' form with detecting conductor 11 (also known as outer detecting conductor) layer.Wherein detecting conductor 11 can be aluminium strip, aluminium foil, copper strips, copper
Foil, at least inside have the aluminum plastic belt of aluminium or at least there is the conductor material that copper modeling band of copper material etc. has closing cladding in inside.
Since the line type temperature-sensitive of above-mentioned different structure detects cable, increased between detecting conductor 11 and meltable conductor 16
If a netted insulating layer 15 ', in this way, in the case of detecting conductor 11 breaks, due to detecting conductor 11 and meltable conductor
16 are separated by netted insulating layer 15 ', and detector can detect open circuit fault.But detector provided in this embodiment still can not area
It is divided to short circuit and two kinds of situations of fire.
Embodiment three
It is right in order to solve the problems, such as that there are detectors, and short circuit and two kinds of situations of fire still cannot be distinguished in embodiment one, two
Embodiment one, two structures line type temperature-sensitive detection cable be further improved, it is specific as follows：
As shown in Figure 14,15, one of twisting type line type temperature-sensitive detection cable respectively provided in this embodiment axial arrangement
With cross-sectional structure schematic diagram, line-type heat detector includes that line type temperature-sensitive detection cable is detected with line type temperature-sensitive is connected to
The signal processing unit (not shown) and terminal resistance (not shown) at cable both ends；Wherein line type temperature-sensitive detects cable
Mainly by being coated with the detecting conductor 13 of semiconductor barrier layer 18, netted insulating layer 15 successively, and detecting conductor 11 and meltable lead
Body 16 twists together, and the enclosed type oversheath 17 being coated on outside it forms.Wherein, the resistance value of terminal resistance is preferably
100 Ω~20M Ω.
Now line-type heat detector operation principle provided in this embodiment is described below：
Under normal circumstances, i.e., fire does not occur, also without failure in the case of, meltable conductor 16 also stands intact, with net
In the case that shape insulating layer 15 and semiconductor barrier layer 18 are spaced together detecting conductor 11,13, at this moment signal processing unit is to line
The resistance value r of type heat detection cable detection is the resistance value R, i.e. r=R of terminal resistance.
When there is open circuit fault, as open circuit occurs for line type temperature-sensitive detection cable somewhere (in detecting conductor 11 and 13 at least
A piece generation open circuit etc.), meltable conductor 16 still remains intact at this time, with netted insulating layer 15 and semiconductor barrier layer 18 together every
Detecting conductor 11,13 is opened, but open circuit occurs for the circuit somewhere that detecting conductor 11,13 and terminal resistance are formed.Therefore, believe at this time
The resistance detection value r that number processing unit detects line type temperature-sensitive cable is more than the resistance value R of terminal resistance, i.e. at this moment r > R believe
Number processing unit exports open circuit fault signal.
When there is short trouble, such as in the case of no fire, line type temperature-sensitive detects two detecting conductors of cable
11, somewhere occur conducting contact completely between 13, that is, short trouble occur, ignore the resistance value of detecting conductor 11,13, this
When, the resistance value r that signal processing unit detects line style heat detection cable is approximately zero.At this moment signal processing unit output short-circuit
Fault-signal.
When a fire, that is, increased when line type temperature-sensitive detects cable heat affected zone temperature, reach meltable conductor 16
Fusion temperature when, due to coating sheath outside line type temperature-sensitive detection cable, meltable conductor 16 melts approximate liquid, on surface
Under the pressure of 17 wrapping layer of power, gravity and enclosed type oversheath, the meltable conductor 16 in the region presses to spy across netted insulating layer 15
Conductor 11 is surveyed, detecting conductor 11 is as a result caused to be contacted with semiconductor barrier layer 18 by meltable conductor 16 after fusing, at this moment, signal
Processing unit detect line style heat detection cable resistance value r by mediate contact region semiconductor barrier layer resistance value and end
Hold resistor coupled in parallel resistance value size to determine, i.e., 0<r<R, signal processing unit exports fire alarm according to this detection resistance value to be believed
Number.
In the present embodiment line type temperature-sensitive detection cable in semiconductor barrier layer 18 semi-conducting material also alternatively at
Temperature coefficient materials, in this way, when a fire, also resulting in detecting conductor 11 and passing through meltable conductor 16 and temperature after fusing
Coefficient barrier layer contacts, and at this moment, signal processing unit detects the resistance value r of line style heat detection cable by mediate contact region
Variable resistance and terminal resistance parallel connection variable resistance the size decision of temperature coefficient barrier layer, i.e., 0<r<R, signal processing list
Detection resistance value size or change rate export single-stage or multistage fire alarm signal (such as single-stage difference temperature alarming, list to primitive root accordingly
The alarm of grade constant temperature, multistage differential temperature alarm, multistage constant temperature alarm or multistage different constant temperature degree alarm), also improve line type temperature-sensitive detection
The reliability of device.Since temperature coefficient barrier layer can also be returned to initial state of insulation when temperature reduces, it is possible to
That realizes line-type heat detector restores performance.It other operation principles and above-mentioned is made of semiconductor barrier layer 18
It is identical that line type temperature-sensitive detects cable operation principle.
As shown in Figure 16,17, two axial arrangements of twisting type line type temperature-sensitive detection cable respectively provided in this embodiment
With cross-sectional structure schematic diagram, line-type heat detector includes that line type temperature-sensitive detection cable is detected with line type temperature-sensitive is connected to
The signal processing unit (not shown) and terminal resistance (not shown) at cable both ends；Wherein line type temperature-sensitive detects cable
It is mainly set together by detecting conductor 11 and the contact of meltable conductor 16 and is coated with netted insulating layer 15, and be coated with semiconductor
The detecting conductor 13 of barrier layer 18 twists together, and the enclosed type oversheath 17 being coated on outside it forms.Wherein, terminal resistance
Resistance value be preferably 100 Ω~20M Ω.Other operation principles and above-mentioned twisting type line type temperature-sensitive detection provided in this embodiment
Two operation principles of cable are identical.
Line type temperature-sensitive detection cable in the present embodiment can produce parallel in similar embodiment one or coaxial structure
Line type temperature-sensitive detect cable.
Detector in the present embodiment the problem of there is also structure line styles heat detection cable described in embodiment one, equally
Using measure identical as embodiment two, i.e., a netted insulating layer 15 ' is additionally arranged between detecting conductor 11 and meltable conductor 16,
This is no longer described in detail, referring to an embodiment part.
It is common detection conductor in the present invention, in two detecting conductors 11,13；Detecting conductor is selected from multiply conductor, sub-thread
At least one of conductor；Meltable conductor 16 is made of fusible alloy material, and melting point temperature is in 40 DEG C~200 DEG C ranges
Interior, cross section is circle, rectangle, square, ellipse etc., can be interrupted or continuous, wherein what is be discontinuously arranged is easy
Molten conductor length is chosen within 0.001~1 meter of range, along temperature sensing cable axial spacing 0.001 between each section of meltable conductor
It is chosen within~1 meter of range；Netted insulating layer 15,15 ' are at least by polyethylene, polypropylene, polyvinyl chloride, nylon, polytetrafluoroethyl-ne
The materials such as alkene are made, and for softening point temperature within the scope of 80 DEG C~250 DEG C, thickness can be preferentially in 0.1~2 millimeter of range；Net
Shape insulating layer can also use the softening points such as dacron thread, spandex thread, polypropylene fiber silk, nylon yarn, cotton thread, linen thread, silk hair, carbon fiber wire to exist
Fiber wire within the scope of 80 DEG C~250 DEG C weaves, and fiber wire diameter can be preferentially in 0.1~2 millimeter of range；Enclosed type
Oversheath is made of PVC, PE, rubber, chemical fibre.
In the present invention, semiconductor barrier layer 18 is by one of semi-conductive rubber, semiconductive ceramic, semiconductive plastics or several
Material is mixed, and thickness can be preferentially in 0.1~2 millimeter of range, electrical resistivity range 10-4-1010Ω·cm。
In the present invention, temperature coefficient barrier layer be PTC (resistance positive temperature coefficient), CTR (resistance critical-temperature coefficient) or
NTC (resistance negative temperature coefficient), thickness can be preferentially in 0.1~2 millimeter of ranges.
No matter line-type heat detector provided by the invention is utilized in two detecting conductors one and meltable conductor connects
Parallel setting is touched, then the structure of netted insulating layer is set between another parallel setting detecting conductor, or using two spies
It surveys conductor and meltable conductor is arranged parallel, netted insulating layer and two spies are both provided between meltable conductor and two detecting conductors
The line type temperature-sensitive detection cable structure of at least one netted insulating layer is set between survey conductor, all generates following effect：It is online first
(using common soft state conductor, the active force between them is far smaller than existing skill to two detecting conductors of type heat detection cable
The active force between elastic conductor in art) in stranding process, since at least one netted insulation being arranged between two detecting conductors
Barrier layer, while meltable conductor hardness is much better than fused insulating layer hardness in the prior art (twisted wire work under normal temperature environment
During skill), the possibility that shorted contacts are directly generated between two detecting conductors is 0；Secondly in line style heat detection cable
Cladding cable jacket extrusion process in, it is soft since at least one netted insulated barriers layer being arranged between two detecting conductors
Change point significantly larger than fused insulating layer softening point in the prior art and equally directly generates shorted contacts between detecting conductor
Possibility be 0；Last line type temperature-sensitive detects cable during transport or use, due to be arranged between two detecting conductors to
A few netted insulated barriers layer, while meltable conductor hardness is much better than fused insulating layer hardness (room temperature in the prior art
Environment), direct short-circuit probability is 0 between causing line type temperature-sensitive to detect cable detecting conductor under the action of mechanical external force, significantly
Ground reduces detector wrong report fire alarm possibility.In short, line type temperature-sensitive using the present invention detects cable structure, not only greatly
Product factory process process product qualified rate is improved, and avoids line type temperature-sensitive and detects cable during transport or use
Mechanical external force effect causes accidental damage, at the same this line type temperature-sensitive detection cable be easy as General Instrument instrument cable it is curved
Song has greatly facilitated the construction of its in-site installation.
In addition, provided by the invention use adds the spy of semiconductor barrier layer (or temperature coefficient barrier layer) structure line type temperature-sensitive
Survey line cable structure can better discriminate between the line type temperature-sensitive detection cable of embodiment one, two in short trouble and fire two occurs
In the case of kind, the reliability of detector fire alarm is increased.
Although above in association with attached drawing and implementation technical solution, the present invention is described, it will be understood that this field skill
Art personnel can be changed or improve to the present invention without departing from the true spirit and scope of the present invention.Though for example,
The case where line type temperature-sensitive detection cable includes two detecting conductors is only shown in right above-mentioned implementation technical solution, but to this field
Technical staff comes, and can detect the detecting conductor, etc. that cable uses three and three or more by line type temperature-sensitive as needed completely.
Claims (13)
1. a kind of line type temperature-sensitive detects cable, it is characterised in that：Including two parallel or twisted setting detecting conductors (11,13),
Two netted insulating layers (15,15 '), meltable conductor (16) and enclosed type oversheath (17)；Wherein two detecting conductors (11,13) with
A netted insulating layer (15,15 ') is respectively provided between meltable conductor (16), and by least one netted insulation between two detecting conductors
Layer separates.
2. line type temperature-sensitive according to claim 1 detects cable, it is characterised in that：Two in the line type temperature-sensitive detection cable
Root detecting conductor (11,13) is coaxially disposed together, and China and foreign countries' detecting conductor is enclosed type detecting conductor layer, cancels the closing
Type oversheath (17).
3. line type temperature-sensitive according to claim 2 detects cable, it is characterised in that：The outer detecting conductor is aluminium strip, aluminium
Foil, copper strips, copper foil, at least there is the aluminum plastic belt of aluminium in inside or at least there is the copper modeling band of copper material in inside.
4. line type temperature-sensitive according to claim 1 detects cable, it is characterised in that：The melting point of the meltable conductor (16)
Temperature is within 40 DEG C~200 DEG C ranges；The softening point temperature of the netted insulating layer (15,15 ') is in 80 DEG C~250 DEG C ranges
Within choose.
5. line type temperature-sensitive according to claim 1 detects cable, it is characterised in that：The meltable conductor is interrupted or connects
It is continuous, wherein the meltable conductor length being discontinuously arranged is chosen within 0.001~1 meter of range, and between each section of meltable conductor along
Type heat detection cable axial spacing is chosen within 0.001~1 meter of range.
6. line type temperature-sensitive according to claim 1 detects cable, it is characterised in that：The meltable conductor is fusible alloy material
Material.
7. line type temperature-sensitive according to claim 1 detects cable, it is characterised in that：The meltable conductors cross is rectangular
Shape, circle, ellipse or rectangular, thickness are chosen within 0.1~2 millimeter of range.
8. line type temperature-sensitive according to claim 1 detects cable, it is characterised in that：The netted insulating layer by polyethylene,
At least one of polypropylene, polyvinyl chloride, nylon and polytetrafluoroethylene (PTFE) are made, or by dacron thread, spandex thread, polypropylene fiber silk, Buddhist nun
At least one of nylon yarn, cotton thread, linen thread, Si Mao and carbon fiber wire weave, and thickness selects within 0.1~2 millimeter of range
It takes.
9. line type temperature-sensitive according to claim 1 detects cable, it is characterised in that：Two in the line type temperature-sensitive detection cable
Root detecting conductor (11,13) at least one coats a temperature coefficient materials layer or semiconductor material layer (18) in advance.
10. line type temperature-sensitive according to claim 9 detects cable, it is characterised in that：The temperature coefficient materials be PTC,
NTC or CTR temperature-coefficient of electrical resistance elastomeric materials, thickness are chosen within 0.1~5 millimeter of range.
11. line type temperature-sensitive according to claim 9 detects cable, it is characterised in that：The fusing of the meltable conductor (16)
Point temperature is within 40 DEG C~200 DEG C ranges；The softening point temperature of the netted insulating layer (15,15 ') is in 80 DEG C~250 DEG C models
It is chosen within enclosing.
12. line type temperature-sensitive according to claim 9 detects cable, it is characterised in that：The meltable conductor is interrupted or connects
It is continuous, wherein the meltable conductor length being discontinuously arranged is chosen within 0.001~1 meter of range, and between each section of meltable conductor along
Type heat detection cable axial spacing is chosen within 0.001~1 meter of range.
13. line type temperature-sensitive according to claim 9 detects cable, it is characterised in that：The meltable conductor is fusible alloy
Material.
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| CN201610301318.2A CN105809876B (en) | 2016-05-06 | 2016-05-06 | A kind of line type temperature-sensitive detection cable |
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| CN201610301318.2A CN105809876B (en) | 2016-05-06 | 2016-05-06 | A kind of line type temperature-sensitive detection cable |
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| CN105809876B true CN105809876B (en) | 2018-11-02 |
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| US11614369B2 (en) * | 2019-11-17 | 2023-03-28 | Littelfuse, Inc. | Thermal sensing wire and techniques for thermal sensing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967608A (en) * | 2005-11-14 | 2007-05-23 | 李刚进 | Fire detecting cable based on memory alloy wire and pressure-sensing conductive rubber and alarm method |
| CN101055211A (en) * | 2007-05-25 | 2007-10-17 | 张陈 | Melted NTC property resumable temperature-sensing detector |
| CN101078654A (en) * | 2007-07-05 | 2007-11-28 | 张陈 | Recoverable cable type linear temperature-sensing detector |
| CN101101693A (en) * | 2006-07-07 | 2008-01-09 | 张卫社 | Analog quantity linear temperature-sensing fire hazard exploration cable |
| CN101164639A (en) * | 2006-10-19 | 2008-04-23 | 张卫社 | Recovery-free type linear temperature-sensitive detector with short-circuit fault alarm |
| CN202013625U (en) * | 2011-04-18 | 2011-10-19 | 李永停 | Restorable temperature-sensing cable |
| CN103337124A (en) * | 2013-07-05 | 2013-10-02 | 天津思科英杰科技发展有限公司 | Net-fixed temperature sensing cable |
| CN103345810A (en) * | 2013-07-05 | 2013-10-09 | 天津思科英杰科技发展有限公司 | Temperature sensing cable for fire protection |
| CN205136852U (en) * | 2015-10-23 | 2016-04-06 | 贵州同益塑料制品有限公司 | Possesses compound pipe of two attribute PE |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ191174A (en) * | 1978-08-24 | 1983-03-15 | Dreamland Electrical Appliance | Electric blanket heating and overheating disconnect circuit |
| US4933658A (en) * | 1989-05-10 | 1990-06-12 | Ingersoll-Rand Company | High temperature fluid sensor |
| CN101059898B (en) * | 2006-04-20 | 2010-05-12 | 首安工业消防有限公司 | A memory alloy wire-based linear temperature induction element |
| CN101138669B (en) * | 2006-09-08 | 2012-08-29 | 首安工业消防有限公司 | Irrecoverable type line-type heat detector of broken circuit warning |
| WO2008046249A1 (en) * | 2006-10-19 | 2008-04-24 | Weishe Zhang | A nonrenewable linear temperature-sensing detector with alarm about short-circuit trouble |
| CN200969134Y (en) * | 2006-10-19 | 2007-10-31 | 张卫社 | Linetype temperature-sensitive detector with short circuit fault alarm |
| CN100504322C (en) * | 2007-05-21 | 2009-06-24 | 张锋社 | Warning method for linear temperature sensitive detector |
| CN104318704A (en) * | 2014-10-11 | 2015-01-28 | 青岛中阳消防科技有限公司 | Switching linear passive temperature sensing element |
| CN104484973B (en) * | 2014-12-23 | 2017-08-04 | 沈阳普泰安科技有限公司 | A kind of composite cable heat fire detector |
| CN204946592U (en) * | 2015-09-15 | 2016-01-06 | 谢斌鑫 | A kind of temperature sensing cable and heat detector |
| CN105139949A (en) * | 2015-09-22 | 2015-12-09 | 重庆瑞普电缆有限公司 | Fire-proof and water-proof and temperature sensing cable and manufacturing method thereof |
-
2016
- 2016-05-06 CN CN201610301318.2A patent/CN105809876B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967608A (en) * | 2005-11-14 | 2007-05-23 | 李刚进 | Fire detecting cable based on memory alloy wire and pressure-sensing conductive rubber and alarm method |
| CN101101693A (en) * | 2006-07-07 | 2008-01-09 | 张卫社 | Analog quantity linear temperature-sensing fire hazard exploration cable |
| CN101164639A (en) * | 2006-10-19 | 2008-04-23 | 张卫社 | Recovery-free type linear temperature-sensitive detector with short-circuit fault alarm |
| CN101055211A (en) * | 2007-05-25 | 2007-10-17 | 张陈 | Melted NTC property resumable temperature-sensing detector |
| CN101078654A (en) * | 2007-07-05 | 2007-11-28 | 张陈 | Recoverable cable type linear temperature-sensing detector |
| CN202013625U (en) * | 2011-04-18 | 2011-10-19 | 李永停 | Restorable temperature-sensing cable |
| CN103337124A (en) * | 2013-07-05 | 2013-10-02 | 天津思科英杰科技发展有限公司 | Net-fixed temperature sensing cable |
| CN103345810A (en) * | 2013-07-05 | 2013-10-09 | 天津思科英杰科技发展有限公司 | Temperature sensing cable for fire protection |
| CN205136852U (en) * | 2015-10-23 | 2016-04-06 | 贵州同益塑料制品有限公司 | Possesses compound pipe of two attribute PE |
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