CN200983191Y - A linear temperature sensing part with window at insulation layer - Google Patents
A linear temperature sensing part with window at insulation layer Download PDFInfo
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- CN200983191Y CN200983191Y CN 200620151553 CN200620151553U CN200983191Y CN 200983191 Y CN200983191 Y CN 200983191Y CN 200620151553 CN200620151553 CN 200620151553 CN 200620151553 U CN200620151553 U CN 200620151553U CN 200983191 Y CN200983191 Y CN 200983191Y
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- insulation course
- window
- linear temperature
- temperature sensor
- detecting
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Abstract
A linear temperature sensing element with windows in the insulating layer comprises an outer jacket, two strips detecting conductors and an insulating layer, wherein the two strips detecting conductors are parallel-arranged in the outer jacket in the style of twist and at least one strip is a memory alloy wire, the insulating layer is coated around any one strip of the two strips detecting conductors, and the twist extruded surface between the two trips detecting conductors on the insulating layer is formed to a strip or a plurality of apart spacing windows. The linear temperature sensing element with windows in the insulating layer of the utility model can make the detecting conductor made from memory alloy wire stretch out of the windows in the insulating layer in heating and contact with the other parallel-arranged detecting conductor to make short circuit to achieve the goal of alarm. Due to the memory alloy wire having good suppleness at normal temperature, thereby the memory alloy wire is convenient to construct and be installed and has strong corrosion resistance; thereby the product has high reliability.
Description
Technical field
The utility model relates to the linear temperature sensor that uses in a kind of line-type heat detector, particularly relates to the linear temperature sensor that a kind of insulation course is provided with window.
Background technology
Line-type heat detector is a kind of broad-spectrum fire detector, mainly form, and be divided into two kinds of recovery formula and beyond retrievables according to the structure difference of linear temperature sensor by linear temperature sensor (also claim survey cable) and the boxcar that is connected linear temperature sensor one end.Fig. 1 and Fig. 2 are respectively vertical partial structurtes of linear temperature sensor and lateral cross section cut-open view in the traditional irrecoverable linear temperature-sensitive detector.As shown in Figure 1 and Figure 2, this traditional linear temperature sensor comprises an oversheath 1; With parallel two detecting conductors 2,3 that are arranged on oversheath 1 inside of stranded mode; On the outer circumference surface that is coated on detecting conductor 2,3, have certain melting point, and the insulation course of making by plastic material 4,5.After a certain section of this linear temperature sensor reaches uniform temperature because of being heated, its inner insulation course 4,5 begins softening or fusion, be in contact with one another together thereby make between the detecting conductor 2,3, promptly be short-circuited, at this moment, the boxcar that links to each other with linear temperature sensor one end will be according to electrical quantity (or sampled value) changing value between the detecting conductor 2,3 size output alarm signal, thereby reaches the purpose of warning.The advantage of this linear temperature sensor is: but after arbitrarily the temperature of any reaches the alarm temperature of setting on this element equal short-circuit alarmings; be that warning sensitivity is irrelevant with the length of being heated; therefore, the detection sensitivity of its fire that object of protection local overheating or external burning things which may cause a fire disaster are caused is very high.But one of shortcoming be in this linear temperature sensor detecting conductor no matter under normal circumstances or be in the alarm temperature environment its elasticity without any variation, simultaneously harder, crisp, therefore in installation and use, can not bear excessive mechanical external force, so difficulty of construction is big; Two of shortcoming is that the detecting conductor in this linear temperature sensor gets rusty easily, and will increase the resistance value of himself and wiring point like this, thereby reduces the reliability of reporting to the police greatly.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of and is convenient to construction and installation, good corrosion resistance, thereby the high insulation course of reliability is provided with the linear temperature sensor of window.
In order to achieve the above object, the insulation course that provides of the utility model linear temperature sensor that is provided with window comprises an oversheath, two detecting conductors and an insulation course; Wherein two detecting conductors are with the parallel inside that is arranged on oversheath of stranded mode, and at least one are memory alloy wire wherein; Insulation course is coated in two detecting conductors on arbitrary the outer circumference surface, and is formed with the window of or a plurality of spacings of being separated by on it on the stranded compressive plane between two detecting conductors.
Window on the described insulation course is rectangle, circle or the annular opening of the even or non-homogeneous setting of a plurality of length directions along insulation course, and every meter is provided with one at least, an or linear opening that forms continuously along the length direction of insulation course, or helical opening that forms continuously along the circumferencial direction of insulation course.
Described insulation course adopts resilient material to make, so window has elasticity.
Described insulation course and between the detecting conductor of insulation course outside the parallel semi-conductor layer that is provided with.
One in described two detecting conductors is memory alloy wire, and another is a thermocouple wire.
The parallel conductive layer that is provided with an interrupted conducting between described semiconductor layer and the insulation course.
The linear temperature sensor that the insulation course that the utility model provides is provided with window can make the detecting conductor of being made by memory alloy wire utilize its characteristic to stretch out from the window on the insulation course when being heated, and contact and be short-circuited, thereby reach the purpose of warning with another parallel detecting conductor that is provided with.Because the memory alloy wire flexibility is good under the normal temperature, therefore be convenient to construction and installation, and good corrosion resistance, so the reliability of products height.
Description of drawings
Fig. 1 and Fig. 2 are respectively vertical partial structurtes of linear temperature sensor and lateral cross section cut-open view in the traditional irrecoverable linear temperature-sensitive detector.
The insulation course that Fig. 3 provides for the utility model is provided with the linear temperature sensor one embodiment longitudinal component structure cut-open view of window.
Fig. 4 be among Fig. 3 A-A to cut-open view.
Insulation layer structure synoptic diagram in the linear temperature sensor that Fig. 5 provides for the utility model.
Fig. 6 is the linear temperature sensor alarm condition synoptic diagram among Fig. 4.
Embodiment
The linear temperature sensor that the insulation course that the utility model is provided below in conjunction with the drawings and specific embodiments is provided with window is elaborated.The parts identical with prior art adopt identical drawing reference numeral, and omit its explanation of carrying out.
Embodiment one:
As Fig. 3～shown in Figure 4, the linear temperature sensor that the insulation course that the utility model provides is provided with window comprises an oversheath, 6,7 and insulation courses 8 of two detecting conductors; Wherein two detecting conductors 6,7 are with the parallel inside that is arranged on oversheath of stranded mode, and at least one are memory alloy wire wherein; Insulation course 8 is coated in two detecting conductors 6,7 on arbitrary the outer circumference surface, and is formed with the window 9 of or a plurality of spacings of being separated by on it on the stranded compressive plane between two detecting conductors 6,7.The thickness of insulation course 8 is 1mm in the present embodiment, the detecting conductor 7 that is coated on insulation course 8 inside is memory alloy wire, its martensite reverse transformation finishing temperature Af is set in 50 ℃～100 ℃ the scope, detecting conductor 6 then is the common metal silk, certainly also detecting conductor 7 can be arranged on the outside of insulation course 8, and with detecting conductor 6 portion that sets within it.Window 9 on the insulation course 8 can be rectangle, circle or the annular opening 10,11,12 of the even or non-homogeneous setting of a plurality of length directions along insulation course 8, width is 0.2～3mm, and every meter is provided with one at least, shown in Fig. 5 a, also can be a linear opening 13 that forms continuously along the length direction of insulation course 8, width is 0.1～3mm, shown in Fig. 5 b, or a helical opening 14 that forms continuously along the circumferencial direction of insulation course 8, width is 0.1～3mm, shown in Fig. 5 c.In addition, the insulation course that the utility model provides is provided with the linear temperature sensor of window can make two kinds of recovery formula or beyond retrievables according to the material difference that insulation course 8 adopts, promptly when insulation course 8 adopts resilient material, can be made into the recovery formula, otherwise be beyond retrievable.In addition, the stranded mode of two detecting conductors 6,7 can be mutual strand, also can be one and be wrapped on another, but also can adopt the stranded mode of other routine.
As shown in Figure 4; the linear temperature sensor that the insulation course that provides when the utility model is provided with window is in Normal Environmental Temperature following time; be arranged on the inside of insulation course 8 and can not undergo phase transition by the detecting conductor 7 that memory alloy wire is made; this moment its better softness; article two, detecting conductor 6,7 is separated by insulation course 8 and is in state of insulation, therefore short circuit can not occur.And when sending fire, as shown in Figure 6, the position local temperature that is on the linear temperature sensor that the utility model provides in this environment will rise because of being heated, when external temperature reaches the martensite reverse transformation finishing temperature Af of detecting conductor 7 settings, the martensite reverse transformation will take place in it, be that rigidity improves, and elastic force is undergone mutation, thereby the trend of the linear state of initial high temperature design appears being returned to by spiral status, but, because the external packets of detecting conductor 7 is covered with insulation course 8, therefore it can only be to the direction generation deformation of window 9, thereby the both sides of window 9 are squeezed open and reach its outside, the result contacts with detecting conductor 6 and short circuit occurs, at this moment, being provided with the boxcar that linear temperature sensor one end of window links to each other with insulation course will be according to detecting conductor 6, electrical quantity between 7 (or sampled value) changing value size output alarm signal, thus reach the purpose of warning.If insulation course 8 is to be made by resilient material, window 9 on it also has elasticity, therefore working as temperature recovers just often, detecting conductor 7 will undergo phase transition once more and revert to martensite, be that rigidity reduces, thereby be withdrawn into the inside of insulation course 8 under the elastic force effect of window 9, at this moment the state between two detecting conductors 6,7 becomes state of insulation again.
Described memory alloy wire is a kind of in Ultimum Ti, NiTi copper memorial alloy, iron-based memorial alloy, the copper-based memory alloy material.Insulation course 8 is thermoplastic elastic material, elastomeric material or other rubber-like macromolecular material, and its thickness is 0.1～3 millimeter.
Embodiment two:
Present embodiment is in the improvement on embodiment one basis: promptly walking abreast between insulation course 8 and detecting conductor 6 is provided with semi-conductor layer, and this semiconductor layer is coated on the detecting conductor 6 with conventionally form.The linear temperature sensor that the insulation course that provides when the utility model is provided with window is heated and when reaching the martensite reverse transformation finishing temperature Af that detecting conductor 7 sets, detecting conductor 7 will be protruding from the window on the insulation course 89, thereby contact with semiconductor layer, at this moment, the boxcar that links to each other with this linear temperature sensor one end will be according to the size of electrical quantity (or sampled value) changing value between the detecting conductor 6,7 output alarm signal.
Described semiconductor layer be selected from have PTC, a kind of in the conductive rubber of characteristics such as CTR, NTC, conductive plastics, conductivity ceramics.
Embodiment three:
Present embodiment is the improvement on embodiment two bases: promptly detecting conductor 6 adopts thermocouple wire, and two detecting conductors 6,7 constitute interim thermopair when being heated, and boxcar then carries out fire alarm according to voltage between two detecting conductors 6,7 or electromotive force size.
Described thermocouple wire can adopt constantan (copper nickel), nisiloy, tungsten, chemical pure iron, examine a kind of in the metal materials such as copper, molybdenum, chemical fine copper, nickel chromium triangle, nickel, platinum, silver, also can adopt nonmetallic materials or semiconductor materials such as N type bismuth telluride, P type bismuth telluride such as graphite, silit, boron, chromium oxide.
Embodiment four:
Present embodiment is the improvement on embodiment two bases: the conductive layer that promptly increases by a parallel interrupted conducting that is provided with between insulation course 8 and semiconductor layer.This conductive layer can be eliminated environment temperature on the one hand to the line-type heat detector Effect on Performance of reporting to the police, can make on the other hand between detecting conductor 6 and the semiconductor layer contact more reliable, thereby fire alarm signal more accurately can be provided.
The conductive layer of described interrupted conducting is selected from a kind of in the materials such as tinsel, nonmetal wire, sheet metal, metallic foil, open column shape metallic sheath, conducting resinl or electrically-conducting paint.The conductive layer of interrupted conducting can be to make in advance, also can be earlier the conductive layer of continuous conducting be set, and then is made into the state of interrupted conducting with physics such as machine cuts or chemical method.The length that the conductive layer of interrupted conducting is every section is generally greater than 0.5m, the distance between each conductive segment, promptly non-conductive section the preferred 0.1～10mm of length.
Embodiment five:
Present embodiment is the improvement on embodiment three bases: the conductive layer that promptly increases by a parallel interrupted conducting that is provided with between insulation course 8 and semiconductor layer.
Claims (7)
1, a kind of insulation course is provided with the linear temperature sensor of window, comprises an oversheath, two detecting conductors (6,7) and an insulation course (8); Wherein two detecting conductors (6,7) are with the parallel inside that is arranged on oversheath of stranded mode, and at least one are memory alloy wire wherein; It is characterized in that: described insulation course (8) is coated in two detecting conductors (6,7) on arbitrary the outer circumference surface, and is positioned at the window (9) that is formed with or a plurality of spacings of being separated by on the stranded compressive plane between two detecting conductors (6,7) on it.
2, insulation course according to claim 1 is provided with the linear temperature sensor of window, it is characterized in that: the window (9) on the described insulation course (8) is rectangle, circle or the annular opening (10,11,12) of the even or non-homogeneous setting of a plurality of length directions along insulation course (8), and every meter is provided with one at least, an or linear opening (13) that forms continuously along the length direction of insulation course (8), or helical opening (14) that forms continuously along the circumferencial direction of insulation course (8).
3, insulation course according to claim 1 is provided with the linear temperature sensor of window, it is characterized in that: described insulation course (8) adopts resilient material to make, so window (9) has elasticity.
4, insulation course according to claim 1 is provided with the linear temperature sensor of window, it is characterized in that: described insulation course (8) and be positioned at the parallel semi-conductor layer that is provided with between outside detecting conductor (6) of insulation course (8) or the detecting conductor (7).
5, insulation course according to claim 4 is provided with the linear temperature sensor of window, it is characterized in that: one in described two detecting conductors (6,7) is memory alloy wire, and another is a thermocouple wire.
6, insulation course according to claim 4 is provided with the linear temperature sensor of window, it is characterized in that: the parallel conductive layer that is provided with an interrupted conducting between described semiconductor layer and the insulation course (8).
7, insulation course according to claim 5 is provided with the linear temperature sensor of window, it is characterized in that: the parallel conductive layer that is provided with an interrupted conducting between described semiconductor layer and the insulation course (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620151553 CN200983191Y (en) | 2006-12-06 | 2006-12-06 | A linear temperature sensing part with window at insulation layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620151553 CN200983191Y (en) | 2006-12-06 | 2006-12-06 | A linear temperature sensing part with window at insulation layer |
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| Publication Number | Publication Date |
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| CN200983191Y true CN200983191Y (en) | 2007-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620151553 Expired - Fee Related CN200983191Y (en) | 2006-12-06 | 2006-12-06 | A linear temperature sensing part with window at insulation layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426331C (en) * | 2006-12-06 | 2008-10-15 | 首安工业消防有限公司 | Linear temperature sensing element with window on insulating layer |
-
2006
- 2006-12-06 CN CN 200620151553 patent/CN200983191Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426331C (en) * | 2006-12-06 | 2008-10-15 | 首安工业消防有限公司 | Linear temperature sensing element with window on insulating layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHOU AN INDUSTRY FIRE LTD. Free format text: FORMER OWNER: ZHANG WEISHE; PATENTEE Effective date: 20080627 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080627 Address after: BeiJing Capital Airport South Industrial Zone Banbidian Lee Road No. 22, zip code: 101304 Patentee after: Sureland Industry Fire-Fighting Co., Ltd. Address before: The construction of the road in the middle of Xiqing Yangliuqing town, Tianjin District 55, zip code: 300380 Co-patentee before: Li Gangjin Patentee before: Zhang Wei |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |