CN100426331C - Linear temperature sensing element with window on insulating layer - Google Patents
Linear temperature sensing element with window on insulating layer Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/005—Circuits arrangements for indicating a predetermined temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
- G01K5/483—Measuring temperature based on the expansion or contraction of a material the material being a solid using materials with a configuration memory, e.g. Ni-Ti alloys
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Abstract
一种绝缘层上设有窗口的线型温度感知元件。其包括一个外护套、两条探测导体和一个绝缘层；其中两条探测导体以绞合的方式并行设置在外护套的内部，并且其中至少一条为记忆合金丝；绝缘层包覆在两条探测导体中任一条的外圆周面上，且其上位于两条探测导体之间的绞合挤压面上形成有一条或多个相隔间距的窗口。本发明提供的绝缘层上设有窗口的线型温度感知元件可在受热时使由记忆合金丝制成的探测导体利用其特性从绝缘层上的窗口伸出，并与另一条并行设置的探测导体相接触而发生短路，从而达到报警的目的。由于常温下记忆合金丝柔软性良好，因此便于施工安装，而且耐腐蚀性好，所以产品的可靠性高。
The utility model relates to a linear temperature sensing element with a window on an insulating layer. It includes an outer sheath, two detection conductors and an insulation layer; two detection conductors are arranged in parallel inside the outer sheath in a twisted manner, and at least one of them is a memory alloy wire; the insulation layer covers the two One or more windows at intervals are formed on the outer peripheral surface of any one of the detection conductors, and on the stranded extruded surface between the two detection conductors. The linear temperature sensing element provided with a window on the insulation layer provided by the present invention can make the detection conductor made of memory alloy wire stretch out from the window on the insulation layer by utilizing its characteristics when heated, and connect with another detection conductor arranged in parallel. The conductors are in contact with each other and a short circuit occurs, so as to achieve the purpose of alarm. Because the memory alloy wire has good flexibility at room temperature, it is convenient for construction and installation, and it has good corrosion resistance, so the reliability of the product is high.
Description
技术领域 technical field
本发明涉及一种线型感温探测器中使用的线型温度感知元件，特别是涉及一种绝缘层上设有窗口的线型温度感知元件。The invention relates to a linear temperature sensing element used in a linear temperature sensing detector, in particular to a linear temperature sensing element with a window on an insulating layer.
背景技术 Background technique
线型感温探测器是一种用途广泛的火灾探测器，主要由线型温度感知元件(也称探测线缆)及连接在线型温度感知元件一端的转换盒组成，并且根据线型温度感知元件的结构不同分为恢复式和不可恢复式两种。图1和图2分别为传统的不可恢复式线型感温探测器中线型温度感知元件纵向局部结构及横向截面剖视图。如图1、图2所示，这种传统的线型温度感知元件包括一个外护套1；以绞合的方式并行设置在外护套1内部的两条探测导体2、3；和包覆在探测导体2、3的外圆周面上，具有一定的融点，且由塑料材料制成的绝缘层4、5。当该线型温度感知元件的某一段因受热而达到一定温度后，其内部的绝缘层4、5开始软化或熔融，从而使探测导体2、3之间相互接触在一起，即发生短路，此时，与线型温度感知元件一端相连的转换盒将根据探测导体2、3之间的电参数(或采样值)变化值大小输出报警信号，从而达到报警的目的。这种线型温度感知元件的优点是：当该元件上任意一点的温度达到设定的报警温度后均可短路报警，即报警灵敏度与受热长度无关，因此，其对保护对象局部过热或外来火源引起的火灾的探测灵敏度很高。但缺点之一是这种线型温度感知元件中的探测导体无论在正常情况下还是处于报警温度环境中其弹性没有任何变化，同时比较硬、脆，因此在安装及使用过程中不能承受过大的机械外力，所以施工难度大；缺点之二是这种线型温度感知元件中的探测导体容易生锈，这样就会增大其自身及接线点的电阻值，从而大大降低报警的可靠性。The linear temperature sensing detector is a widely used fire detector, mainly composed of a linear temperature sensing element (also known as a detection cable) and a conversion box connected to one end of the linear temperature sensing element, and according to the According to the different structure, it is divided into two types: recoverable and non-recoverable. Fig. 1 and Fig. 2 are the vertical partial structure and the transverse cross-sectional view of the linear temperature sensing element in the traditional non-recoverable linear temperature sensing element respectively. As shown in Fig. 1 and Fig. 2, this traditional linear temperature sensing element comprises an
发明内容 Contents of the invention
为了解决上述问题，本发明的目的在于提供一种便于施工安装、耐腐蚀性好，因而可靠性高的绝缘层上设有窗口的线型温度感知元件。In order to solve the above problems, the object of the present invention is to provide a linear temperature sensing element with a window on the insulating layer which is convenient for construction and installation, has good corrosion resistance and high reliability.
为了达到上述目的，本发明提供的绝缘层上设有窗口的线型温度感知元件包括一个外护套、两条探测导体和一个绝缘层；其中两条探测导体以绞合的方式并行设置在外护套的内部，并且其中至少一条为记忆合金丝；绝缘层包覆在两条探测导体中任一条的外圆周面上，且其上位于两条探测导体之间的绞合挤压面上形成有一条或多个相隔间距的窗口。In order to achieve the above object, the linear temperature sensing element provided with windows on the insulating layer of the present invention includes an outer sheath, two detection conductors and an insulation layer; wherein the two detection conductors are arranged in parallel on the outer sheath in a twisted manner. The inside of the sleeve, and at least one of them is a memory alloy wire; the insulating layer is covered on the outer circumferential surface of any one of the two detection conductors, and a twisted extrusion surface between the two detection conductors is formed on it. One or more windows that are spaced apart.
所述的绝缘层上的窗口为多个沿绝缘层的长度方向均匀或非均匀设置的长方形、圆形或环形开口，并且每米至少设置一个，或一条沿绝缘层的长度方向连续形成的直线形开口，或一条沿绝缘层的圆周方向连续形成的螺旋状开口。The windows on the insulating layer are a plurality of rectangular, circular or annular openings arranged uniformly or non-uniformly along the length direction of the insulating layer, and at least one is provided per meter, or a straight line continuously formed along the length direction of the insulating layer shaped opening, or a spiral opening formed continuously along the circumferential direction of the insulating layer.
所述的绝缘层采用弹性材料制成，因此窗口具有弹性。The insulating layer is made of elastic material, so the window has elasticity.
所述的绝缘层和位于绝缘层外部的探测导体之间并行设有一半导体层。A semiconductor layer is arranged in parallel between the insulating layer and the detection conductor outside the insulating layer.
所述的两条探测导体中的一条为记忆合金丝，另一条为热电偶丝。One of the two detection conductors is a memory alloy wire, and the other is a thermocouple wire.
所述的半导体层和绝缘层之间并行设有一断续导通的导电层。An intermittent conduction conductive layer is arranged in parallel between the semiconductor layer and the insulating layer.
本发明提供的绝缘层上设有窗口的线型温度感知元件可在受热时使由记忆合金丝制成的探测导体利用其特性从绝缘层上的窗口伸出，并与另一条并行设置的探测导体相接触而发生短路，从而达到报警的目的。由于常温下记忆合金丝柔软性良好，因此便于施工安装，而且耐腐蚀性好，所以产品的可靠性高。The linear temperature sensing element provided with a window on the insulation layer provided by the present invention can make the detection conductor made of memory alloy wire stretch out from the window on the insulation layer by utilizing its characteristics when heated, and connect with another detection conductor arranged in parallel. The conductors are in contact with each other and a short circuit occurs, so as to achieve the purpose of alarm. Because the memory alloy wire has good flexibility at room temperature, it is convenient for construction and installation, and it has good corrosion resistance, so the reliability of the product is high.
附图说明 Description of drawings
图1和图2分别为传统的不可恢复式线型感温探测器中线型温度感知元件纵向局部结构及横向截面剖视图。Fig. 1 and Fig. 2 are the vertical partial structure and the transverse cross-sectional view of the linear temperature sensing element in the traditional non-recoverable linear temperature sensing element respectively.
图3为本发明提供的绝缘层上设有窗口的线型温度感知元件一实施例纵向部分结构剖视图。Fig. 3 is a longitudinal partial structural cross-sectional view of an embodiment of the linear temperature sensing element provided with windows on the insulating layer provided by the present invention.
图4为图3中A-A向剖视图。Fig. 4 is a sectional view along A-A in Fig. 3 .
图5为本发明提供的线型温度感知元件中绝缘层结构示意图。Fig. 5 is a schematic diagram of the insulating layer structure in the linear temperature sensing element provided by the present invention.
图6为图4中的线型温度感知元件报警状态示意图。FIG. 6 is a schematic diagram of an alarm state of the linear temperature sensing element in FIG. 4 .
具体实施方式 Detailed ways
下面结合附图和具体实施例对本发明提供的绝缘层上设有窗口的线型温度感知元件进行详细说明。与已有技术相同的部件采用相同的附图标号，并省略对其进行的说明。The linear temperature sensing element provided with windows on the insulating layer provided by the present invention will be described in detail below with reference to the drawings and specific embodiments. Components that are the same as those in the prior art are assigned the same reference numerals, and their descriptions are omitted.
实施例一：Embodiment one:
如图3～图4所示，本发明提供的绝缘层上设有窗口的线型温度感知元件包括一个外护套、两条探测导体6、7和一个绝缘层8；其中两条探测导体6、7以绞合的方式并行设置在外护套的内部，并且其中至少一条为记忆合金丝；绝缘层8包覆在两条探测导体6、7中任一条的外圆周面上，且其上位于两条探测导体6、7之间的绞合挤压面上形成有一条或多个相隔间距的窗口9。本实施例中绝缘层8的厚度为1mm，包覆在绝缘层8内部的探测导体7为记忆合金丝，其马氏体逆相变终了温度Af设定在50℃～100℃的范围内，而探测导体6则为常规金属丝，当然也可将探测导体7设置在绝缘层8的外部，而将探测导体6设置在其内部。绝缘层8上的窗口9可以是多个沿绝缘层8的长度方向均匀或非均匀设置的长方形、圆形或环形开口10、11、12，宽度为0.2～3mm，并且每米至少设置一个，如图5a所示，也可以是一条沿绝缘层8的长度方向连续形成的直线形开口13，宽度为0.1～3mm，如图5b所示，或一条沿绝缘层8的圆周方向连续形成的螺旋状开口14，宽度为0.1～3mm，如图5c所示。另外，本发明提供的绝缘层上设有窗口的线型温度感知元件可根据绝缘层8采用的材料不同制成恢复式或不可恢复式两种，即当绝缘层8采用弹性材料时可制成恢复式，否则为不可恢复式。另外，两条探测导体6、7的绞合方式可以是互绞，也可以是一条缠绕在另一条上，而且还可以采用其它常规的绞合方式。As shown in Figures 3 to 4, the linear temperature sensing element provided with a window on the insulation layer provided by the present invention includes an outer sheath, two
如图4所示，当本发明提供的绝缘层上设有窗口的线型温度感知元件处于正常环境温度下时，设置在绝缘层8的内部且由记忆合金丝制成的探测导体7不会发生相变，此时其柔软性较好，两条探测导体6、7由绝缘层8隔开而处于绝缘状态，因此不会出现短路。而当发出火灾时，如图6所示，本发明提供的线型温度感知元件上处于该环境中的部位局部温度就会因受热而上升，当外部温度达到探测导体7设定的马氏体逆相变终了温度Af时，其将会发生马氏体逆相变，即刚度提高，并且弹力发生突变，从而出现由螺旋状态恢复到初始高温设计的直线状态的趋势，但是，由于探测导体7的外部包覆有绝缘层8，因此其只能向窗口9的方向发生形变，从而将窗口9的两侧挤开而伸出到其外部，结果与探测导体6相接触而出现短路，此时，与绝缘层上设有窗口的线型温度感知元件一端相连的转换盒将根据探测导体6、7之间的电参数(或采样值)变化值大小输出报警信号，从而达到报警的目的。如果绝缘层8是由弹性材料制成，其上的窗口9也具有弹性，因此当温度恢复正常时，探测导体7将再次发生相变而恢复成马氏体，即刚性减小，从而在窗口9的弹力作用下缩回到绝缘层8的内部，这时两条探测导体6、7之间的状态又变成绝缘状态。As shown in Figure 4, when the linear temperature sensing element provided with a window on the insulating layer provided by the present invention is at normal ambient temperature, the detection conductor 7 which is arranged inside the
所述的的记忆合金丝为镍钛记忆合金、镍钛铜记忆合金、铁基记忆合金、铜基记忆合金材料中的一种。绝缘层8为热塑性弹性体材料、橡胶材料或其它具有弹性的高分子材料，其厚度为0.1～3毫米。The memory alloy wire is one of nickel-titanium memory alloy, nickel-titanium-copper memory alloy, iron-based memory alloy and copper-based memory alloy. The insulating
实施例二：Embodiment two:
本实施例是在实施例一基础上的改进：即在绝缘层8和探测导体6之间并行设置一半导体层，并且该半导体层以常规形式包覆在探测导体6上。当本发明提供的绝缘层上设有窗口的线型温度感知元件受热并达到探测导体7设定的马氏体逆相变终了温度Af时，探测导体7将从绝缘层8上的窗口9向外伸出，从而与半导体层接触，此时，与该线型温度感知元件一端相连的转换盒将根据探测导体6、7之间的电参数(或采样值)变化值大小输出报警信号。This embodiment is an improvement on the basis of the first embodiment: that is, a semiconductor layer is arranged in parallel between the
所述的半导体层选自具有PTC、CTR、NTC等特性的导电橡胶、导电塑料、导电陶瓷中的一种。The semiconductor layer is selected from one of conductive rubber, conductive plastic, and conductive ceramics with characteristics such as PTC, CTR, and NTC.
实施例三：Embodiment three:
本实施例是在实施例二基础上的改进：即探测导体6采用热电偶丝，受热时两根探测导体6、7构成临时热电偶，转换盒则根据两个探测导体6、7之间的电压或电势大小进行火灾报警。This embodiment is an improvement on the basis of Embodiment 2: that is, the
所述的热电偶丝可以采用康铜(铜镍)、镍硅、钨、化学纯铁、考铜、钼、化学纯铜、镍铬、镍、铂、银等金属材料中的一种，也可以采用石墨、碳化硅、硼、氧化铬等非金属材料或N型碲化铋、P型碲化铋等半导体材料。Described thermocouple wire can adopt a kind of in metal materials such as constantan (copper-nickel), nickel silicon, tungsten, chemically pure iron, test copper, molybdenum, chemically pure copper, nickel chromium, nickel, platinum, silver, also Non-metallic materials such as graphite, silicon carbide, boron, and chromium oxide, or semiconductor materials such as N-type bismuth telluride and P-type bismuth telluride can be used.
实施例四：Embodiment four:
本实施例是在实施例二基础上的改进：即在绝缘层8和半导体层之间增加一并行设置的断续导通的导电层。该导电层一方面可以消除环境温度对线型感温探测器报警性能的影响，另一方面可以使探测导体6与半导体层之间的接触更加可靠，从而能够提供更准确的火灾报警信号。This embodiment is an improvement on the basis of the second embodiment: that is, a conductive layer with intermittent conduction arranged in parallel is added between the
所述的断续导通的导电层选自金属丝、非金属丝、金属片、金属箔带、空心柱状金属套、导电胶或导电涂料等材料中的一种。断续导通的导电层可以是预先制好，也可以先将连续导通的导电层设置好，然后再用机械切割等物理或化学方法将其制成断续导通的状态。断续导通的导电层每段的长度一般大于0.5m，各导电段之间的距离，即不导电段的长度优选0.1～10mm。The intermittent conduction conductive layer is selected from one of materials such as metal wire, non-metal wire, metal sheet, metal foil strip, hollow cylindrical metal sleeve, conductive glue or conductive paint. The conductive layer for discontinuous conduction can be prefabricated, or the conductive layer for continuous conduction can be set up first, and then made into a discontinuous conduction state by physical or chemical methods such as mechanical cutting. The length of each section of the intermittently conducting conductive layer is generally greater than 0.5m, and the distance between each conductive section, that is, the length of the non-conductive section is preferably 0.1-10mm.
实施例五：Embodiment five:
本实施例是在实施例三基础上的改进：即在绝缘层8和半导体层之间增加一并行设置的断续导通的导电层。This embodiment is an improvement on the basis of the third embodiment: that is, a conductive layer with intermittent conduction arranged in parallel is added between the insulating
Claims (7)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610129894XA CN100426331C (en) | 2006-12-06 | 2006-12-06 | Linear temperature sensing element with window on insulating layer |
| PCT/CN2006/003343 WO2008067690A1 (en) | 2006-12-06 | 2006-12-08 | A linear temperature-sensing element with windows on an insulating layer |
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|---|---|---|---|
| CNB200610129894XA CN100426331C (en) | 2006-12-06 | 2006-12-06 | Linear temperature sensing element with window on insulating layer |
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| CN1971644A CN1971644A (en) | 2007-05-30 |
| CN100426331C true CN100426331C (en) | 2008-10-15 |
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| CNB200610129894XA Expired - Fee Related CN100426331C (en) | 2006-12-06 | 2006-12-06 | Linear temperature sensing element with window on insulating layer |
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| WO (1) | WO2008067690A1 (en) |
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| CN102116678B (en) * | 2010-01-04 | 2013-05-15 | 泷川工程株式会社 | Thermometer for moving body |
| CN103345970A (en) * | 2013-07-15 | 2013-10-09 | 中利科技集团股份有限公司 | Intelligent on-line railway-signal-monitoring cable |
| CN118746374B (en) * | 2024-06-26 | 2025-05-16 | 山东德泰光电科技有限公司 | Temperature sensing cable made of high polymer material with negative temperature coefficient and application method thereof |
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| JPH0896630A (en) * | 1994-09-26 | 1996-04-12 | Furukawa Electric Co Ltd:The | Fire detection line |
| JPH08128903A (en) * | 1994-10-31 | 1996-05-21 | Tokin Corp | Temperature sensor |
| CN1842829A (en) * | 2003-08-29 | 2006-10-04 | 和田耕一 | Temperature detection device |
| CN200983191Y (en) * | 2006-12-06 | 2007-11-28 | 张卫社 | A linear temperature sensing part with window at insulation layer |
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|---|---|---|---|---|
| US3485101A (en) * | 1968-02-13 | 1969-12-23 | John E Lindberg | Continuously supported sensor |
| PL138268B1 (en) * | 1982-08-13 | 1986-08-30 | Politechnika Warszawska | Linear fire detector of warning fire protection system |
| JPS607334A (en) * | 1983-06-28 | 1985-01-16 | Sumitomo Electric Ind Ltd | Temperature detecting device |
| CN2809746Y (en) * | 2005-07-12 | 2006-08-23 | 张卫社 | A flexible corrosion-resistant switching value linear heat sensitive detector |
| CN2812147Y (en) * | 2005-07-13 | 2006-08-30 | 张卫社 | An analogue linear temperature-sensing detector with fusible or meltable insulation layer |
| CN2814542Y (en) * | 2005-08-08 | 2006-09-06 | 张卫社 | Analog quantity linear temperature-sensing detector based on memory alloy filament and pressure-sensitive material layer |
| CN2921981Y (en) * | 2006-04-25 | 2007-07-11 | 张卫社 | Linear temperature sensing element based on memory alloy filament |
| CN2924666Y (en) * | 2006-05-17 | 2007-07-18 | 张卫社 | Memory alloy wire based linetype temperature sensing element |
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2006
- 2006-12-06 CN CNB200610129894XA patent/CN100426331C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0896630A (en) * | 1994-09-26 | 1996-04-12 | Furukawa Electric Co Ltd:The | Fire detection line |
| JPH08128903A (en) * | 1994-10-31 | 1996-05-21 | Tokin Corp | Temperature sensor |
| CN1842829A (en) * | 2003-08-29 | 2006-10-04 | 和田耕一 | Temperature detection device |
| CN200983191Y (en) * | 2006-12-06 | 2007-11-28 | 张卫社 | A linear temperature sensing part with window at insulation layer |
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