CN1936985A - Double-criterion simulation quantity linear temperature-sensitive five disaster detection cable - Google Patents
Double-criterion simulation quantity linear temperature-sensitive five disaster detection cable Download PDFInfo
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Abstract
The detection cable is composed of two pairs of detection conductor, diaphragm layer in NTC characteristic, and diaphragm layer in temperature sensing characteristic. Diaphragming layer in NTC characteristic is setup between a pair of paralleled detection conductor so as to constitute detection cable A. diaphragm layer in temperature sensing characteristic is setup between another pair of paralleled detection conductor so as to constitute detection cable B. the detection cable A and the detection cable B are composite each other. Temperature coefficient of diaphragm layer in NTC characteristic is alpha TA. Temperature coefficient of diaphragm layer in temperature sensing characteristic is alpha TB. The alpha TA is not equal to the alpha TB. The diaphragm layer in temperature sensing characteristic is selected from diaphragm layer in NTC, PTC, or CTR characteristic. Advantages are: reducing rate of false alarm, repeated use, raised reliability and length of use.
Description
Technical field
The present invention relates to a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable, this detection cable is composited by NTC material and other thermo-sensitive material, can form constant temperature, differential temperature or different constant temperature analog linear temperature-sensing fire detecting device with resistance signal measurement mechanism (microcomputer head), report to the police based on two criterions, overcome the false alarm of Conventional detectors, improved the reliability of analog linear temperature-sensing fire detecting cable and used length.
Background technology
In the prior art, it is a kind of broad-spectrum disaster detection cable that the analog linear temperature-sensing of NTC characteristic commonly used is surveyed cable, accompanying drawing 1 (view in transverse section of cable) has shown traditional analog linear temperature-sensing detection cable structure synoptic diagram, survey in the cable at this, two detecting conductors 1 and 2 are arranged, two detecting conductors are parallel together, the barrier layer 3 of one NTC characteristic is arranged between two detecting conductors, and (the NTC characteristic is a negative temperature coefficient feature, be that temperature rising resistance reduces, use temperature coefficient α
TThe temperature variant speed of resistance of expression material, α
TUsually between-0.1%～-40%), when the detection cable is heated, rising along with temperature, the resistance of the NTC barrier layer between two detecting conductors can diminish, (electric capacity increase), form line style constant temperature or differential fire detector according to the order of magnitude of resistance variations or the size of rate of change, reach the purpose that thermometric is reported a fire thus.The disclosed sensing cable of Chinese patent ZL03242897.9 is exactly wherein a kind of.The alarm temperature of detection cable of the prior art is relevant with the four big factors such as the length of being heated, heating temperature, environment temperature and whole length of surveying cable; The alarm temperature that we wish to survey cable is surveyed the heating temperature of cable relevant with two factors of length of being heated to other factors during only with breaking out of fire and is had nothing to do or concern less.For other two factors, heat detection cable of the prior art can't be eliminated, like this will be influential to reliability and the sensitivity of surveying cable.For this reason, need to propose a kind of new analog linear temperature-sensing fire detecting cable.
Summary of the invention
The object of the present invention is to provide a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable, this detection cable is composited by two pairs of detecting conductors, adopt a kind of NTC characteristic barrier layer of temperature coefficient between a pair of parallel detecting conductor, another is to adopting the sensitive characteristic barrier layer of another kind of temperature coefficient between the parallel detecting conductor, can form constant temperature with resistance signal measurement mechanism (microcomputer head), differential temperature or different constant temperature analog linear temperature-sensing fire detecting device, report to the police based on two criterions, overcome traditional heat detector owing to survey length of cable, the environment temperature factor is to its false alarm that causes, and improved the reliability of analog linear temperature-sensing fire detecting cable and used length.
The objective of the invention is to realize: a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable by following technical proposals, form by two pairs of detecting conductors, NTC characteristic barrier layer, sensitive characteristic barrier layer, between the described a pair of parallel detecting conductor NTC characteristic barrier layer is set, constitutes and survey cable A; Described another between the parallel detecting conductor sensitive characteristic barrier layer being set, constitute and survey cable B; Described detection cable A and described detection cable B are combined with each other; The temperature coefficient of described NTC characteristic barrier layer is α
TA, the temperature coefficient of described sensitive characteristic barrier layer are α
TB; α
TA is not equal to α
TB, described sensitive characteristic barrier layer are a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer.
Purpose of the present invention can also be realized by following technical proposals: a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable, form by detecting conductor, NTC characteristic barrier layer, sensitive characteristic barrier layer, between the described a pair of parallel detecting conductor NTC characteristic barrier layer is set, constitutes and survey cable A; A detecting conductor in the described a pair of parallel detecting conductor is set to shared detecting conductor, dispose isometric with it and mate a detection line body side by side with this shared detecting conductor, a sensitive characteristic barrier layer is set between this detection line body and the shared detecting conductor, constitutes and survey cable B.Described detection cable A and described detection cable B are combined with each other; The temperature coefficient of described NTC characteristic barrier layer is α
TA, the temperature coefficient of described sensitive characteristic barrier layer are α
TB; α
TA is not equal to α
TB, described sensitive characteristic barrier layer are a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer.
Purpose of the present invention can also be realized by another kind of technical scheme: a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable, article three, coating the sensitive characteristic barrier layer on the parallel detecting conductor respectively is isosceles triangle and combines, article three, detecting conductor sets gradually shell-like detecting conductor, insulating sheath outward, article one, between detecting conductor and the shell-like detecting conductor sensitive characteristic barrier layer is set, constitutes and survey cable A; Between second detecting conductor and the shell-like detecting conductor sensitive characteristic barrier layer is set, constitutes and survey cable B; Article three, between detecting conductor and the shell-like detecting conductor sensitive characteristic barrier layer is set, constitutes and survey cable C; Wherein, the shell-like detecting conductor is shared detecting conductor, detection cable A, detection cable B, detection cable C are combined with each other, described sensitive characteristic barrier layer is a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer, and the temperature coefficient of described three kinds of sensitive characteristic barrier layers is homophase not.
Compared with the prior art the present invention has following advantage:
1, owing to the present invention the negative temperature coefficient feature of NTC characteristic barrier layer and the temperature coefficient characteristics of sensitive characteristic barrier layer are organically combined, two criterions of reporting to the police are provided, eliminated the detection cable and used length and survey the residing environment temperature of cable, reduced rate of false alarm widely surveying cable alarm temperature effect.
2, the NTC characteristic barrier layer and the sensitive characteristic barrier layer of the present invention's employing all have reversibility, after the detection cable is finished once warning task, along with the releasing of alert, the recovery naturally of environment temperature, described barrier layer can recover its initial resistance, so can reuse after reporting to the police.
3, the present invention can improve the reliability of surveying cable and use length.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1, traditional analog linear temperature-sensing are surveyed the cable structure synoptic diagram
Fig. 2, detection cable schematic cross-section of the present invention
The schematic cross-section of Fig. 3, embodiments of the invention two
Fig. 4, the analog linetype temperature-fixing fire detecting device synoptic diagram that has used the present invention to constitute
Fig. 5, the detector Ω that uses wall scroll NTC detection cable and the trial curve figure of L
Fig. 6, used the first trial curve figure of detector Ω of the present invention and L
Fig. 7, used the second trial curve figure of detector Ω of the present invention and L
Fig. 8, the analog linear differential fire detector synoptic diagram that has used the present invention to constitute
Fig. 9, the detector RR that uses wall scroll NTC detection cable and the trial curve figure of L
Figure 10, used the trial curve figure of detector RR of the present invention and L
Figure 11, the analog linear different constant temperature fire detector synoptic diagram that has used the present invention to constitute
The schematic cross-section of Figure 12, embodiments of the invention three
The schematic cross-section of Figure 13, embodiments of the invention four
Figure 14, detection cable of the present invention improve structural representation for first kind
Figure 15, detection cable of the present invention improve structural representation for second kind
Figure 16, the third improvement structural representation of detection cable of the present invention
Figure 17, detection cable of the present invention improve structural representation for the 4th kind
Figure 18, detection cable of the present invention improve structural representation for the 5th kind
Figure 19, detection cable of the present invention improve structural representation for the 6th kind
Figure 20, detection cable of the present invention improve structural representation for the 7th kind
Figure 21, the second kind of different constant temperature fire detector synoptic diagram that has used the present invention to constitute
Figure 22, the third different constant temperature fire detector synoptic diagram that has used the present invention to constitute
The schematic cross-section of Figure 23, embodiments of the invention five
The schematic cross-section of Figure 24, embodiments of the invention six
The schematic cross-section of Figure 25, embodiments of the invention seven
The schematic cross-section of Figure 26, embodiments of the invention eight
The schematic cross-section of Figure 27, embodiments of the invention nine
Figure 28, the 4th kind of different constant temperature fire detector synoptic diagram that has used the present invention to constitute
Embodiment
(accompanying drawing only shows the xsect of surveying cable referring to Fig. 2, surveying the longitudinal profile of cable omits), analog linear temperature-sensing fire detecting cable of the present invention, form by two pairs of detecting conductors, NTC characteristic barrier layer, sensitive characteristic barrier layer, between a pair of parallel detecting conductor 4,5 NTC characteristic barrier layer 8 is set, constitutes and survey cable A; Another constitutes and surveys cable B between the parallel detecting conductor 6,7 sensitive characteristic barrier layer 9 being set; Described detection cable A and described detection cable B are combined with each other; The temperature coefficient of described NTC characteristic barrier layer is α
TA, the temperature coefficient of described sensitive characteristic barrier layer are α
TB; α
TA is not equal to α
TB, described sensitive characteristic barrier layer are a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer.In order to improve the performance of present embodiment, described temperature coefficient α
TA and described temperature coefficient α
TThe absolute value of the difference of B is divided by described temperature coefficient α
TThe merchant of the absolute value of A should be not less than 0. 1 percent.Perhaps temperature coefficient α
TA and temperature coefficient α
TB meets the following relationship formula:
α
TA≠α
TB；|α
TA-α
TB|/|α
TA|≥0.1％；
Wherein, α
TA and α
TB is 25 ℃ of temperatures coefficient under the standard temperature.
In the present embodiment, described NTC characteristic barrier layer and sensitive characteristic barrier layer are that the coating form with routine combines with detecting conductor, and the combining form that Fig. 2 shows only is for the convenience on describing and is convenient to understand the present invention.
In the present embodiment, so-called parallel is meant two detecting conductor settings parallel to each other, or one twine another setting, or with etc. the stranded mode of spiral of pitch twine setting, or one be core shape conductor, another is the coaxial cable structure setting of shell-like conductor.Detecting conductor can be hollow core conductor, solid conductor or metal fibre braided wire, and the length-diameter ratio of this lead is greater than 100.
In the present embodiment, surveying cable A and surveying version that cable B is combined with each other to have multiplely, and the first is stranded to be intertwined, and can adopt one to survey cable and twine another detection cable form, or the form of twining mutually in twos; It two is that one is formed in parallel placement, and during parallel placement, the spacing of surveying cable A and surveying cable B is chosen between 0～3 meter.The length of surveying cable can be designed to 50 meters～200 meters.
In the present embodiment, the NTC characteristic barrier layer is meant that the material of barrier layer has negative temperature coefficient feature.The ptc characteristics barrier layer is meant that the material of barrier layer has ptc characteristics.The CTR characteristic barrier layer is meant that the material of barrier layer has the critical temperature characteristic.NTC characteristic barrier layer 8 can be that general performance was the NTC characteristic after two or more thermo-sensitive material was superimposed.Ptc characteristics barrier layer 9 can be that general performance was a ptc characteristics after two or more thermo-sensitive material was superimposed.The CTR characteristic barrier layer can be that general performance was the CTR characteristic after two or more thermo-sensitive material was superimposed.
In the present embodiment, described NTC characteristic barrier layer is a polyacetylene, and polyaniline, polythiophene, the poly-phthalein mountain valley with clumps of trees and bamboo are a kind of in the macromolecular material of main conductive materials.Can also be NiO, CoO, ZnO, AL
2O
3, SiC, BaTiO3 are a kind of in the stupalith of main conductive materials.
Present embodiment should be installed together with the resistance signal measurement mechanism when using, and two detecting conductors surveying among the cable A are electrically connected with the signal input part of described resistance signal measurement mechanism; Two detecting conductors surveying among the cable B are electrically connected with the signal input part of described resistance signal measurement mechanism.Because resistance signal pick-up unit and connected mode are routine techniquess, do not show its connected mode among the figure.
(accompanying drawing only shows the xsect of surveying cable referring to Fig. 3, surveying the longitudinal profile of cable omits), embodiments of the invention two, this embodiment is the improvement on the foregoing description one basis, form by two pairs of detecting conductors, NTC characteristic barrier layer, sensitive characteristic barrier layer, between a pair of parallel detecting conductor 4,5 NTC characteristic barrier layer 8 is set, constitutes and survey cable A; Another constitutes and surveys cable B between the parallel detecting conductor 6,7 sensitive characteristic barrier layer 9 being set; Described detection cable A and described detection cable B are combined with each other; Survey insulating sheath 10 of coating outside the cable at described two kinds, insulating sheath is used for and external insulation.
Referring to Fig. 4, the analog linetype temperature-fixing fire detecting device that has used the present invention to constitute, this detector are to add a resistance signal pick-up unit (also can be described as constant temperature microcomputer head), two terminating resistors formations on embodiment one and two basis.Four signal output parts 4,5,6,7 of surveying cable A and described detection cable B right-hand member are electrically connected with the input end of resistance signal pick-up unit 11, and its left end is connected with terminating resistor Ra, Rb respectively.Wherein, the resistance of Ra and Rb is chosen between 10 Ω～500M Ω.Because the resistance signal pick-up unit is a routine techniques, omits its detailed structure view.When a certain section detection cable of described detector is heated, along with the rising of temperature, resistance decline (electric capacity increase) between the detecting conductor 4,5; Resistance decline (when the sensitive characteristic barrier layer of surveying cable B is NTC or CTR characteristic material) between the detecting conductor 6,7, or rise (when the sensitive characteristic barrier layer of surveying cable B is ptc material), because two groups of temperature coefficient differences of surveying the barrier layer of cable, resistance fall are also different; The resistance signal pick-up unit detects between the detecting conductor 4,5 and the size of two resistance values between the detecting conductor 6,7 simultaneously, and analytical calculation, thereby confirm whether to report to the police, when reaching predetermined alarm temperature value, the resistance signal pick-up unit will produce also output alarm signal.
The function that the analog linetype temperature-fixing fire detecting device that has used the present invention to constitute reduces the wrong report fire alarm can illustrate with a following type testing:
According to the technical requirement of line style constant temperature cable formula heat fire detector and the requirement in the experimental technique, detector must be by the action experiment and the experiment of being failure to actuate, what Fig. 5 showed is the resistance R (Ω) of fixed temperature detector when action is tested and be failure to actuate experiment and the graph of a relation of experiment length L (m) that traditional wall scroll NTC characteristic barrier layer is surveyed cable, and the curve among the figure is the trial curve of fixed temperature detector.As seen from the figure, detector is that the resistance when reaching alarm temperature is a certain value X1a in the action experiment of 1 ℃/min. (1 meter of the length of being heated) at heating rate, and detector is reported a fire.Equally, detector in the various length of being heated (from the random length of the maximal use length of 0.1L～1.0L, heating rate is 1 ℃/min., be warming up to the highest temperature of being failure to actuate) be failure to actuate the experiment in, detector is heated length when being Lx1, resistance has also reached X1a, this means when the length of being heated surpasses Lx1, detector should be reported a fire, promptly in the experiment of being failure to actuate that should not move, produce wrong report, the false alarm problem the when constant temperature of visible wall scroll NTC characteristic barrier layer is surveyed cable and can't be solved detector and be failure to actuate test.
Fig. 6 shows has been to use fixed temperature detector of the present invention in the action experiment with the resistance R (Ω) when being failure to actuate experiment and test the graph of a relation of length L (m).Curve among the figure is the trial curve of fixed temperature detector.A detection cable of this fixed temperature detector is the NTC characteristic barrier layer, and another surveys cable is CTR characteristic barrier layer or NTC characteristic barrier layer, two temperature coefficient differences of surveying the barrier layer of cables.As seen from the figure, detector is in the action experiment of 1 ℃/min. (1 meter of the length of being heated) at heating rate, article two, the resistance of surveying cable has reached value X1a, X1b respectively, and two resistance sizes of resistance signal pick-up unit analysis of detector are come intelligent decision determine to report a fire (resistance value of two surveying cable is all identical with the preset value of software in the resistance signal pick-up unit).Equally, detector in the various length of being heated (from the random length of the maximal use length of 0.1L～1.0L, heating rate is that 1 ℃/min. is heated to the maximum temperature of being failure to actuate) the experiment of being failure to actuate in, detector is heated length when being Lx1, the resistance of surveying cable A has reached X1a, but because two temperature coefficient differences of surveying the sensitive characteristic barrier layer of cable, the resistance of surveying cable B does not reach X1b (actual resistance is X1c), the resistance signal pick-up unit is according to two resistance X1b, the difference of X1c and do not report a fire (| X1b-X1c|/| X1b|＞0.01%), so just can distinguish the action experiment of detector and the difference between experiment of being failure to actuate, and principle is come intelligent decision report fire alarm or is not reported fire alarm according to this, and this meaning has reduced the false alarm of fixed temperature detector.
Fig. 7 shows has been to use fixed temperature detector of the present invention in the action experiment with the resistance R (Ω) when being failure to actuate experiment and test the graph of a relation of length L (m).A detection cable of this fixed temperature detector is the NTC characteristic barrier layer, and another surveys cable is the ptc characteristics barrier layer.Curve among the figure is the trial curve of fixed temperature detector.As seen from the figure, detector is in the action experiment of 1 ℃/min. (1 meter of the length of being heated) at heating rate, article two, the resistance of surveying cable (A, B) has reached X1a, X1d respectively, and two resistance sizes of resistance signal pick-up unit analysis of detector are come intelligent decision determine to report a fire (resistance value of two surveying cable is all identical with the preset value of software in the resistance signal pick-up unit).Equally, detector in the various length of being heated (from the random length of the maximal use length of 0.1L～1.0L, heating rate is that 1 ℃/min. is heated to the maximum temperature of being failure to actuate) the experiment of being failure to actuate in, detector is heated length when being Lx1, the resistance of surveying cable A has reached X1a, but because two sensitive characteristic barrier layer temperature variation characteristic differences of surveying cable, the change in resistance of surveying cable B does not reach X1d (actual resistance is X1e), the resistance signal pick-up unit is according to two resistance X1d, the difference of X1e is not reported fire alarm (| X1d-X1e|/| X1d|＞0.01%), so just can distinguish the action experiment of detector and the difference between experiment of being failure to actuate, and principle is come intelligent decision report fire alarm or is not reported fire alarm according to this, and this meaning has reduced the false alarm of detector.
Referring to Fig. 8, the analog linear differential fire detector that has used the present invention to constitute, this detector are to add a resistance signal pick-up unit (also can be described as differential temperature microcomputer head), two terminating resistors formations on embodiment one and two basis.Four signal output parts 4,5,6,7 of surveying cable A and detection cable B right-hand member are electrically connected with the input end of resistance signal pick-up unit 12, and its left end is connected with terminating resistor Ra, Rb respectively.Wherein, the resistance of Ra and Rb is chosen between 10 Ω～500M Ω.Because the resistance signal pick-up unit is a routine techniques, omits its detailed structure view.When a certain section detection cable of described detector is heated, along with the rising of temperature, resistance decline (electric capacity increase) between the detecting conductor 4,5; Resistance decline (when the sensitive characteristic barrier layer of surveying cable B is NTC or CTR characteristic material) between the detecting conductor 6,7, or rise (when the sensitive characteristic barrier layer of surveying cable B is ptc material), because the temperature coefficient difference of two groups of temperature-sensitive insulating material, resistance fall off rate are also different; The resistance signal pick-up unit detects between the detecting conductor 4,5 and the size of the rate of change of two resistance values between the detecting conductor 6,7 simultaneously, and analytical calculation, thereby confirm whether report to the police, when reaching predetermined temperature rate of change value, the resistance signal pick-up unit will produce and output alarm signal.
The function that the analog linear differential fire detector that has used the present invention to constitute reduces the wrong report fire alarm can illustrate with a following type testing:
According to the technical requirement of analog linear differential fire detector and the requirement in the experimental technique, rate-of-rise detector must be through the action experiment and the experiment of being failure to actuate, Fig. 9 shows be traditional wall scroll NTC characteristic barrier layer survey cable rate-of-rise detector in the action experiment and the absolute value RR of the resistance varying-ratio when being failure to actuate experiment (graph of a relation of Ω/min.) and experiment length L (m), the curve among the figure is the trial curve of fixed temperature detector.As seen from the figure, detector is that the rate of change that reaches the resistance when reporting to the police is a certain value Y1a in the action experiment of 10 ℃/min. (1 meter of the length of being heated) at heating rate, and detector is reported fire alarm.Equally, detector in the various length of being heated (from the random length of the maximal use length of 0.1L～1.0L, heating rate be 1 ℃/min.) be failure to actuate the experiment in, detector is heated length when being Ly1, resistance varying-ratio has also reached Y1a, this means that detector should be reported fire alarm when the length of being heated surpasses Ly1, promptly in the experiment of being failure to actuate that should not move, produce wrong report, the false alarm problem when visible wall scroll differential temperature is surveyed cable and can't be solved rate-of-rise detector and be failure to actuate test.
Figure 10 shows has been to use rate-of-rise detector of the present invention in the action experiment with the absolute value RR of the resistance varying-ratio when being failure to actuate experiment (Ω/min.) and the graph of a relation of experiment length L (m).A detection cable of this rate-of-rise detector is the NTC characteristic barrier layer, and another surveys cable is the sensitive characteristic barrier layer, two temperature coefficient differences of surveying the barrier layer of cables.Curve among the figure is the trial curve of fixed temperature detector.As seen from the figure, detector is in the action experiment of 10 ℃/min. (1 meter of the length of being heated) at heating rate, article two, (Ω/min.) has reached value Y1a, Y1b respectively, and two resistance sizes of resistance signal pick-up unit analysis are come intelligent decision determine to report a fire (two resistance change rates are all identical with the preset value of software in the resistance signal pick-up unit) to survey the absolute value RR of cable (A, B) resistance varying-ratio.Equally, detector in the various length of being heated (from the random length of the maximal use length of 0.1L～1.0L, heating rate be 1 ℃/min.) be failure to actuate the experiment in, detector is heated length when being Ly1, the absolute value of surveying the resistance varying-ratio of cable A has reached Y1a, but because two temperature coefficient differences of surveying the temperature-sensitive insulation course of line, the absolute value of surveying the resistance varying-ratio of cable B does not reach Y1b (actual value is Y1c), the resistance signal pick-up unit is according to two value Y1b, the difference of Y1c (| Y1b-Y1c|/| Y1b|＞0.01%), so just can distinguish the action experiment of detector and the difference between experiment of being failure to actuate, and principle is come intelligent decision report fire alarm or is not reported fire alarm according to this, and this meaning has reduced the false alarm of rate-of-rise detector.
The analog linear different constant temperature fire detector that has been to use the present invention to constitute that Figure 11 shows, this detector are to add a resistance signal pick-up unit (also can be described as different constant temperature microcomputer head), two terminating resistors formations on embodiment one and two basis.Four signals outputs surveying cable A and detection cable B right-hand member are electrically connected with the input end of resistance signal pick-up unit 13, and its left end is connected with terminating resistor Ra, Rb respectively.Wherein, the resistance of Ra and Rb is chosen between 10 Ω～500M Ω.Because the resistance signal pick-up unit is a routine techniques, omits its detailed structure view.Survey cable by two and finish differential temperature detection and two of constant temperature detections (differential temperature is reported to the police and constant temperature is reported to the police) functions, the analysis of surveying the electrical quantity of cables to two is all depended in differential temperature or constant temperature warning.In the present embodiment, different constant temperature microcomputer head is measured wherein one resistance (rate of change of resistance value and resistance value) between the terminal of surveying cable at least, timesharing or measure resistance between the terminal of another detection cable simultaneously or other electrical quantitys (electric capacity or the inductance that cause by resistance variations, or variable quantity and the rate of change of the duration of charging of the concussion frequency of the oscillating circuit of forming with peripheral circuit or oscillating circuit or oscillating circuit discharge time).
Referring to Figure 12, present embodiment three is the improvement on the foregoing description one basis, considers the cost of detector, and in the present embodiment, surveying cable B and survey cable A can a shared detecting conductor, constitutes compound detection cable.In the present embodiment, form, between a pair of parallel detecting conductor 18,20 NTC characteristic barrier layer 19 is set, constitute and survey cable A by detecting conductor, NTC characteristic barrier layer, sensitive characteristic barrier layer; A detecting conductor 18 in a pair of parallel detecting conductor is set to shared detecting conductor, dispose isometric with it and mate a detection line body 16 side by side with this shared detecting conductor, a sensitive characteristic barrier layer 17 is set between this detection line body and the shared detecting conductor, constitutes and survey cable B.Described detection cable A and described detection cable B are combined with each other; The temperature coefficient of described NTC characteristic barrier layer is α
TA, the temperature coefficient of described sensitive characteristic barrier layer are α
TB; α
TA is not equal to α
TB, described sensitive characteristic barrier layer are a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer.
Referring to Figure 13, present embodiment four is the improvement on the foregoing description three bases, in order to improve reliability of the present invention, insulating sheath 21 of the outer coating of described detection cable A and described detection cable B.Insulating sheath is used for and external insulation.
Referring to Figure 14, (accompanying drawing only shows an xsect of surveying cable, surveying the longitudinal profile of cable omits), present embodiment is that the detection cable in the foregoing description one is improved structure for first kind, in the present embodiment, one in two detecting conductors is core shape conductor 23, and another is a shell-like conductor 26, article two, detecting conductor is sleeved on and constitutes coaxial cable formula structure together, is provided with sensitive characteristic barrier layer 25 between core shape conductor and the shell-like conductor.Can also outside surveying cable, coat an insulating sheath 24.Detection cable A among the embodiment one and described detection cable B can adopt this structure.
Referring to Figure 15, (accompanying drawing only shows an xsect of surveying cable, surveying the longitudinal profile of cable omits), present embodiment is that the detection cable in the foregoing description one is improved structure for second kind, in the present embodiment, article two, in the detecting conductor is a core shape conductor 23, and this conductor coats sensitive characteristic barrier layer 25, insulating sheath 24 outward successively.Another detecting conductor 22 is set between sensitive characteristic barrier layer and insulating sheath.This detecting conductor can twine in a spiral manner and be arranged between sensitive characteristic barrier layer and the insulating sheath.
Referring to Figure 16, (accompanying drawing only shows an xsect of surveying cable, surveying the longitudinal profile of cable omits), present embodiment is that the third improves structure to the detection cable in the foregoing description one, in the present embodiment, survey two detecting conductors, 22, the 23 outer sensitive characteristic barrier layers 25, outermost coated insulation sheath 24 of coating respectively in the cable.Article two, the detecting conductor stranded mode of spiral that pitch such as is is twined setting.
Referring to Figure 17, (accompanying drawing only shows an xsect of surveying cable, surveying the longitudinal profile of cable omits), present embodiment is that the detection cable in the foregoing description one is improved structure for the 4th kind, in the present embodiment, two detecting conductors 22,23 of surveying in the cable are coated in the same sensitive characteristic barrier layer 25 outermost coated insulation sheath 24 jointly.Article two, the detecting conductor stranded mode of spiral that pitch such as is is twined setting.
Referring to Figure 18, (accompanying drawing only shows the xsect of detection cable of the present invention, surveying the longitudinal profile of cable omits), present embodiment is the improvement to the detection cable structure in the foregoing description three, in the present embodiment, survey two detecting conductors, 27, the 28 outer sensitive characteristic barrier layers 30,31 that coat respectively in the cable, detecting conductor 29 is shared detecting conductor, detecting conductor 27,29 and sensitive characteristic barrier layer 30 constitute surveys cable A, detecting conductor 28,29 and sensitive characteristic barrier layer 31 constitute surveys cable B, surveys cable and coats insulating sheath 24 outward.
Referring to Figure 19, (accompanying drawing only shows the xsect of detection cable of the present invention, surveying the longitudinal profile of cable omits), present embodiment is the improvement to the detection cable structure in the foregoing description three, in the present embodiment, one in the detecting conductor is core shape conductor 27, and this conductor coats sensitive characteristic barrier layer 30, shell-like conductor 34, sensitive characteristic barrier layer 32, shell-like conductor 33, insulating sheath 24 outward successively.Wherein, shell-like conductor 34 is shared detecting conductor, and detecting conductor 27,34 and sensitive characteristic barrier layer 30 constitute surveys cable A, and shell-like conductor 33,34 and sensitive characteristic barrier layer 32 constitute surveys cable B.
Referring to Figure 20, (accompanying drawing only shows the xsect of detection cable of the present invention, surveying the longitudinal profile of cable omits), present embodiment is the improvement to the detection cable structure in the foregoing description three, in the present embodiment, one in the detecting conductor is core shape conductor 27, and this conductor coats sensitive characteristic barrier layer 30, sensitive characteristic barrier layer 32, insulating sheath 24 outward successively.One shared detecting conductor 35 is set between sensitive characteristic barrier layer 30,32, a detecting conductor 36 is set between sensitive characteristic barrier layer 32, insulating sheath.Detecting conductor 27, shared detecting conductor 35 and sensitive characteristic barrier layer 30 constitute surveys cable A, and detecting conductor 36, shared detecting conductor 35 and sensitive characteristic barrier layer 32 constitute surveys cable B.
Referring to Figure 21, the second kind of analog linear different constant temperature fire detector that has used the present invention to constitute selected two detection cables and surveyed cable as constant temperature in the detection cable in embodiment one, two, three, four; Select two other detection cable and survey cable as differential temperature; This is surveyed cable one end and is connected another termination terminating resistor Ra, Rb, Rc, the Rd of detection cable, formation rate-of-rise and fixed temperature detector with different constant temperature microcomputer head 14.
Referring to Figure 22, the third analog linear different constant temperature fire detector that uses the present invention to constitute is selected two and is surveyed cable as constant temperature or differential temperature detection cable in the detection cable in embodiment one, two, three, four; Select the sensitive characteristic detection cable (ptc characteristics or NTC characteristic) of going out else and survey cable formation differential temperature or constant temperature detection cable (wherein is the NTC characteristic, and is the different temperature-sensitive cable of temperature coefficient) with a sensitive characteristic in the aforesaid detection cable; This detection cable one end is connected with different constant temperature microcomputer head 14, surveys another termination terminating resistor Ra, Rb, the Rc of cable, constitutes complete rate-of-rise and fixed temperature detector.
(accompanying drawing only shows the xsect of surveying cable referring to Figure 23, surveying the longitudinal profile of cable omits), embodiments of the invention five are made up of three pairs of detecting conductors and sensitive characteristic barrier layer, sensitive characteristic is set between first pair of parallel detecting conductor intercepts, constitute and survey cable A; Between second pair of parallel detecting conductor the sensitive characteristic barrier layer is set, constitutes and survey cable B; Between the 3rd pair of parallel detecting conductor sensitive characteristic barrier layer is set, constitutes and survey cable C; Described detection cable A, described detection cable B, detection cable C are combined with each other; Described detection cable A, survey cable B, survey two of cable C and once constitute constant temperature to survey cable (be that AB, AC or BC make up, wherein a sensitive characteristic barrier layer of surveying cable is the NTC characteristic, all the other two the temperature coefficient differences of surveying the sensitive characteristic barrier layer of cable); Two of detection cable A, detection cable B, detection cable C are carried out secondary and constitute (the i.e. combination after eliminating is once made up of differential temperature detection cable, wherein a sensitive characteristic barrier layer of surveying cable is the NTC characteristic, all the other two the temperature coefficient differences of surveying the sensitive characteristic barrier layer of cable); This differential temperature is surveyed cable and is constituted different constant temperature detection cable with constant temperature detection cable.
(accompanying drawing only shows the xsect of surveying cable referring to Figure 24, surveying the longitudinal profile of cable omits), embodiments of the invention six, form by detecting conductor and sensitive characteristic barrier layer, shared four detecting conductors, three sensitive characteristic barrier layers in the present embodiment, between per two detecting conductors a sensitive characteristic barrier layer is set, forming is combined with each other surveys cable A, survey cable B, survey cable C; Article three, survey cable and use jointly, constitute different constant temperature and survey cable.Its constituted mode can reference example five.
(accompanying drawing only shows the xsect of surveying cable referring to Figure 25, surveying the longitudinal profile of cable omits), embodiments of the invention seven are made up of detecting conductor and sensitive characteristic barrier layer, sensitive characteristic is set between first pair of parallel detecting conductor 50,52 intercepts 51, constitute and survey cable A; Between second pair of parallel detecting conductor 52,54 sensitive characteristic barrier layer 53 is set, constitutes and survey cable B; Between the 3rd pair of parallel detecting conductor 52,55 sensitive characteristic barrier layer 56 is set, constitutes and survey cable C; Wherein, detecting conductor 52 is shared detecting conductors.Detection cable A, detection cable B, detection cable C are combined with each other and constitute T shape different constant temperature detection cable.Its constituted mode can reference example five.
(accompanying drawing only shows the xsect of surveying cable referring to Figure 26, surveying the longitudinal profile of cable omits), embodiments of the invention eight are made up of detecting conductor and sensitive characteristic barrier layer, sensitive characteristic is set between first pair of parallel detecting conductor 60,62 intercepts 61, constitute and survey cable A; Between second pair of parallel detecting conductor 62,64 sensitive characteristic barrier layer 63 is set, constitutes and survey cable B; Between the 3rd pair of parallel detecting conductor 64,60 sensitive characteristic barrier layer 65 is set, constitutes and survey cable C; Wherein, two detecting conductors being arranged is shared detecting conductors.Detection cable A, detection cable B, detection cable C are combined with each other and constitute triangle different constant temperature detection cable.Its constituted mode can reference example five.
(accompanying drawing only shows the xsect of surveying cable referring to Figure 27, surveying the longitudinal profile of cable omits), embodiments of the invention nine, form by detecting conductor and sensitive characteristic barrier layer, article three, coat the sensitive characteristic barrier layer on the parallel detecting conductor respectively and be isosceles triangle and combine, three detecting conductors set gradually shell-like detecting conductor 70, insulating sheath 80 outward.Article one, between detecting conductor 72 and the shell-like detecting conductor sensitive characteristic barrier layer 71 is set, constitutes and survey cable A; Between second detecting conductor 73 and the shell-like detecting conductor sensitive characteristic barrier layer 74 is set, constitutes and survey cable B; Article three, between detecting conductor 76 and the shell-like detecting conductor sensitive characteristic barrier layer 75 is set, constitutes and survey cable C; Wherein, the shell-like detecting conductor is shared detecting conductor.Detection cable A, detection cable B, detection cable C are combined with each other and constitute different constant temperature detection cable.Its constituted mode can reference example five.
Referring to Figure 28, the different constant temperature shown in the embodiments of the invention nine is surveyed the cable right-hand member and is electrically connected with different constant temperature microcomputer head 15, and this different constant temperature is surveyed the cable left end and is electrically connected terminating resistor Ra, Rb, Rc, constitutes the 4th kind of different constant temperature fire detector thus.
In an embodiment of the present invention, described NTC characteristic barrier layer can be the stupalith of NTC characteristic, and this stupalith is NiO, CoO, Al
2O
3, SiC, BaTiO3 (in its resistance shows as the temperature range of NTC characteristic), CTR pottery V
2O
5(general performance is the NTC characteristic), the thickness of this sensitive characteristic barrier layer can be selected for use in 0.01-10 millimeter scope.Described NTC characteristic barrier layer also can be with polyacetylene, polyaniline, and polythiophene, the poly-phthalein mountain valley with clumps of trees and bamboo etc. is the NTC macromolecular material of main conductive materials, the thickness of this sensitive characteristic barrier layer can be selected for use in 0.1-10 millimeter scope.Described sensitive characteristic barrier layer can be NTC characteristic material or ptc characteristics material, and NTC characteristic material can be a kind of in the aforementioned NTC characteristic material; PTC sensitive characteristic material can be the BaTiO3 pottery, thickness can be selected for use in 0.01-10 millimeter scope, also can be that the polyolefins macromolecule adds PTC high molecule plastics such as certain density conducting metal particles, metal oxide, graphite, carbon black, thickness can be selected for use in 0.1-10 millimeter scope, it also can be the metal of ptc characteristics, as Cu, Pt, (condition is that the variation of the electrical quantity between its corresponding terminal depends primarily on Cu to Ni etc., Pt, Ni layer changes in resistance), thickness can be selected for use in 0.1-10 millimeter scope.
Claims (10)
1, a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable, it is characterized in that: form by two pairs of detecting conductors, NTC characteristic barrier layer, sensitive characteristic barrier layer, between the described a pair of parallel detecting conductor NTC characteristic barrier layer is set, constitutes and survey cable A; Described another between the parallel detecting conductor sensitive characteristic barrier layer being set, constitute and survey cable B; Described detection cable A and described detection cable B are combined with each other; The temperature coefficient of described NTC characteristic barrier layer is α
TA, the temperature coefficient of described sensitive characteristic barrier layer are α
TB; α
TA is not equal to α
TB, described sensitive characteristic barrier layer are a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer.
2, analog linear temperature-sensing fire detecting cable according to claim 1 is characterized in that: described temperature coefficient α
TA and described temperature coefficient α
TThe absolute value of the difference of B is divided by described temperature coefficient α
TThe merchant of the absolute value of A is not less than 0. 1 percent.
3, analog linear temperature-sensing fire detecting cable according to claim 2 is characterized in that: survey at described two kinds and coat an insulating sheath outside the cable.
4, according to claim 1 or 2 or 3 described analog linear temperature-sensing fire detecting cables, it is characterized in that: described NTC characteristic barrier layer is a polyacetylene, and polyaniline, polythiophene, the poly-phthalein mountain valley with clumps of trees and bamboo are a kind of in the macromolecular material of main conductive materials.
5, according to claim 1 or 2 or 3 described analog linear temperature-sensing fire detecting cables, it is characterized in that: described NTC characteristic barrier layer is NiO, CoO, ZnO, AL
2O
3, SiC, BaTiO
3A kind of in the stupalith of main conductive materials.
6, a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable is characterized in that: be made up of detecting conductor, NTC characteristic barrier layer, sensitive characteristic barrier layer, between the described a pair of parallel detecting conductor NTC characteristic barrier layer be set, constitute and survey cable A; A detecting conductor in the described a pair of parallel detecting conductor is set to shared detecting conductor, dispose isometric with it and mate a detection line body side by side with this shared detecting conductor, a sensitive characteristic barrier layer is set between this detection line body and the shared detecting conductor, constitutes and survey cable B.Described detection cable A and described detection cable B are combined with each other; The temperature coefficient of described NTC characteristic barrier layer is α
TA, the temperature coefficient of described sensitive characteristic barrier layer are α
TB; α
TA is not equal to α
TB, described sensitive characteristic barrier layer are a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer.
7, analog linear temperature-sensing fire detecting cable according to claim 6 is characterized in that: coat an insulating sheath outside described detection cable A and described detection cable B.
8, analog linear temperature-sensing fire detecting cable according to claim 1 is characterized in that: be made up of three pairs of detecting conductors and sensitive characteristic barrier layer, sensitive characteristic be set between first pair of parallel detecting conductor intercept, constitute and survey cable A; Between second pair of parallel detecting conductor the sensitive characteristic barrier layer is set, constitutes and survey cable B; Between the 3rd pair of parallel detecting conductor sensitive characteristic barrier layer is set, constitutes and survey cable C; Described detection cable A, detection cable B, detection cable C are combined with each other.
9, analog linear temperature-sensing fire detecting cable according to claim 6, it is characterized in that: form by detecting conductor and sensitive characteristic barrier layer, sensitive characteristic is set between first pair of parallel detecting conductor (60,62) intercepts (61), constitute and survey cable A; Between second pair of parallel detecting conductor (62,64) sensitive characteristic barrier layer (63) is set, constitutes and survey cable B; Between the 3rd pair of parallel detecting conductor (64,60) sensitive characteristic barrier layer (65) is set, constitutes and survey cable C; Wherein, it is shared detecting conductors that two detecting conductors are arranged, and described detection cable A, detection cable B, detection cable C are combined with each other and constitute triangle detection cable.
10, a kind of double-criterion simulation quantity linear temperature-sensitive five disaster detection cable, it is characterized in that: coat the sensitive characteristic barrier layer on three parallel detecting conductors respectively and be isosceles triangle and combine, article three, detecting conductor sets gradually shell-like detecting conductor (70), insulating sheath (80) outward, sensitive characteristic barrier layer (71) article one is set between detecting conductor (72) and the shell-like detecting conductor, constitutes and survey cable A; Sensitive characteristic barrier layer (74) is set between second detecting conductor (73) and the shell-like detecting conductor, constitutes and survey cable B; Article three, sensitive characteristic barrier layer (75) is set between detecting conductor (76) and the shell-like detecting conductor, constitutes and survey cable C; Wherein, the shell-like detecting conductor is shared detecting conductor, detection cable A, detection cable B, detection cable C are combined with each other, described sensitive characteristic barrier layer is a kind of in NTC characteristic barrier layer, ptc characteristics barrier layer, the CTR characteristic barrier layer, and the temperature coefficient of described three kinds of sensitive characteristic barrier layers is homophase not.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510104904 CN1936985A (en) | 2005-09-22 | 2005-09-22 | Double-criterion simulation quantity linear temperature-sensitive five disaster detection cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510104904 CN1936985A (en) | 2005-09-22 | 2005-09-22 | Double-criterion simulation quantity linear temperature-sensitive five disaster detection cable |
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| CN1936985A true CN1936985A (en) | 2007-03-28 |
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| CN 200510104904 Pending CN1936985A (en) | 2005-09-22 | 2005-09-22 | Double-criterion simulation quantity linear temperature-sensitive five disaster detection cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101450733B (en) * | 2007-12-03 | 2011-02-16 | 佛山普立华科技有限公司 | Buffering frame |
| CN101667318B (en) * | 2009-10-22 | 2011-11-16 | 曾学义 | Linear heat fire detector and method for improving non-operating temperature rating |
| CN102034573B (en) * | 2009-09-28 | 2012-07-18 | 重庆仪表材料研究所 | Dynamic hot spot type surface thermocouple temperature alarming thermosensitive cable |
| CN113450525A (en) * | 2021-07-13 | 2021-09-28 | 唐山微探电子设备有限公司 | Temperature sensing cable, temperature alarm device and alarm method |
-
2005
- 2005-09-22 CN CN 200510104904 patent/CN1936985A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101450733B (en) * | 2007-12-03 | 2011-02-16 | 佛山普立华科技有限公司 | Buffering frame |
| CN102034573B (en) * | 2009-09-28 | 2012-07-18 | 重庆仪表材料研究所 | Dynamic hot spot type surface thermocouple temperature alarming thermosensitive cable |
| CN101667318B (en) * | 2009-10-22 | 2011-11-16 | 曾学义 | Linear heat fire detector and method for improving non-operating temperature rating |
| CN113450525A (en) * | 2021-07-13 | 2021-09-28 | 唐山微探电子设备有限公司 | Temperature sensing cable, temperature alarm device and alarm method |
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