WO2007036097A1 - Switch volume linetype temp sensing fire detecting cable based on shape memory alloy wire - Google Patents

Switch volume linetype temp sensing fire detecting cable based on shape memory alloy wire Download PDF

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Publication number
WO2007036097A1
WO2007036097A1 PCT/CN2006/000881 CN2006000881W WO2007036097A1 WO 2007036097 A1 WO2007036097 A1 WO 2007036097A1 CN 2006000881 W CN2006000881 W CN 2006000881W WO 2007036097 A1 WO2007036097 A1 WO 2007036097A1
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Prior art keywords
detecting
conductors
memory alloy
switch
sensing fire
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PCT/CN2006/000881
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French (fr)
Chinese (zh)
Inventor
Weishe Zhang
Gangjin Li
Original Assignee
Weishe Zhang
Gangjin Li
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Application filed by Weishe Zhang, Gangjin Li filed Critical Weishe Zhang
Publication of WO2007036097A1 publication Critical patent/WO2007036097A1/en

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

Definitions

  • the invention relates to a switch wire type temperature sensing fire detecting cable based on a memory alloy wire, which uses a memory alloy wire as a detecting conductor, and the detecting conductor will automatically destroy its insulation when in an environment of alarm temperature. Layer, generating an alarm signal. Background technique
  • FIG. 1 shows the structure of a conventional switched-wire type temperature sensing cable in which the cable is detected.
  • an outer sheath 1 in which two elastic conductors 2, 3 are twisted together, and the outer surface of the conductor is covered with a plastic layer 4, 5 of a certain melting point.
  • the temperature reaches After a certain degree, the plastic softens or melts, and the conductors are in contact with each other, that is, a short circuit occurs, thereby achieving the purpose of reporting a fire alarm.
  • the advantage of this type of probe cable is: When the temperature of any point on the probe cable reaches the set alarm temperature, the probe cable can be short-circuited, and the sensitivity of the probe cable alarm is independent of the length of the heat, so the target is partially overheated.
  • the detection sensitivity of fires caused by external fire sources is high.
  • One of the disadvantages is that the conductor in the temperature sensing cable is as elastic as it is under normal conditions or in an alarm temperature environment, and is relatively hard and brittle. During installation and use, it is afraid of mechanical external force. And the construction is difficult.
  • the second disadvantage is that the conductor of the temperature sensing cable is prone to rust, thereby increasing the resistance value of the conductor and the wiring point, and greatly reducing the reliability of the alarm. To this end, it is necessary to propose a wire-type temperature-sensing fire detecting cable based on a memory alloy wire. Summary of the invention
  • the object of the present invention is to provide a switch halo type heat-sensitive fire detecting cable based on a memory alloy wire, wherein one of the detecting conductors is a wire alloy wire, and the detecting conductor is soft in a normal temperature range. When it is in the environment of the alarm temperature, the probe conductor will return to the alarm shape, automatically destroy its insulation layer and generate an alarm signal.
  • a switch wire type temperature sensing fire detecting cable based on a memory alloy wire the main points of which are: two detecting conductors, a smeltable insulating layer, wherein the two detecting conductors are disposed in parallel, and the smeltable insulating layer is disposed between the two detecting conductors, at least one of the two detecting conductors is a memory alloy wire.
  • the invention has the following advantages:
  • the conductor Since the invention adopts the memory alloy wire as the detecting conductor, the conductor has good flexibility under the normal temperature range, and is convenient for detecting the installation of the cable. When the temperature is in the alarm temperature environment, the detecting conductor will automatically destroy the insulating layer. , generate an alarm signal, effectively reducing the false alarm of the detection cable itself under normal temperature.
  • the memory alloy wire used in the present invention has corrosion resistance itself, the resistance value does not greatly change when it is in a corrosive environment for a long time, and the false alarm of the fire detection cable in a highly corrosive environment can be effectively reduced.
  • the elastic stress of the fire alarm can be improved by increasing the deformation amount of the memory alloy wire, and the action of the switch type linear temperature fire detection cable is greatly improved. reliability.
  • FIG. 1 Schematic diagram of a traditional switch-line type temperature sensing cable
  • Figure 2 is a schematic view showing the structure of the probe cable of the present invention.
  • Embodiment 2 of the present invention is a schematic structural view of Embodiment 2 of the present invention.
  • Embodiment 3 of the present invention is a schematic structural view of Embodiment 3 of the present invention.
  • Figure 5 is a schematic structural view of Embodiment 4 of the present invention.
  • Figure 6 is a schematic structural view of Embodiment 5 of the present invention.
  • Figure 7 is a schematic view showing the appearance of the fifth embodiment of the present invention.
  • Figure 8 is a schematic structural view of Embodiment 6 of the present invention.
  • Figure 9 is a schematic structural view of Embodiment 7 of the present invention.
  • FIG. 10 is a schematic structural view of Embodiment 8 of the present invention. detailed description
  • the temperature sensing fire detecting cable of the present invention is composed of two detecting conductors (or half) a conductor 6 , 7 , a fused insulating layer 8 , wherein the two detecting conductors 6 , 7 are arranged in parallel, and the smeltable insulating layer 8 is disposed between the two detecting conductors, At least one of the two probe conductors is a memory alloy wire.
  • the so-called parallel arrangement means that two detecting conductors are arranged in parallel, wound (one winding another or intertwined), and one circumferentially surrounding the other to form a coaxial cable arrangement.
  • the length of the detecting conductor can be designed to be 50 m to 200 m, one of the two detecting conductors is a common metal conductor, and the other is a memory alloy wire.
  • the common metal conductor may be a hollow conductor, a solid conductor or a wire braided conductor, and the fused insulating layer disposed between the two probe conductors may take the form of being coated on the surface of the probe conductor.
  • the detecting conductor may be a common metal wire or a conductive carbon fiber wire or a carbon elastic steel wire, or a conductive plastic or rubber wire having a semiconductor property.
  • the memory alloy wire may be one of a nickel-titanium memory alloy, a nickel-titanium copper memory alloy, an iron-based memory alloy, and a copper-based memory alloy material;
  • the meltable insulating layer may be a low density polyethylene, and a high density.
  • the melting point of the meltable insulating layer is in the range of 40 ° C to 220 ° C.
  • the conductor and the insulator in the present invention are opposite conductors and opposite insulators, and the conductor and the insulator can be distinguished by using a ratio of the electrical resistivity of the insulator to the electrical resistivity of the conductor at room temperature greater than 10 8 .
  • the temperature sensing fire detecting cable includes two detecting conductors 9, 10, a smelable insulating layer 11, and an insulating guard. Set of 12.
  • the two detecting conductors 9, 10 are arranged in parallel, and a smelable insulating layer 11 is disposed between the two detecting conductors, and one of the two detecting conductors is a memory alloy wire 10.
  • An insulating sheath 12 is disposed outside the two detecting conductors for insulation from the outside.
  • the conductor and the insulator in the present invention are opposite conductors and opposite insulators, and the conductor and the insulator can be distinguished by using a ratio of the electrical resistivity of the insulator to the electrical resistivity of the conductor at room temperature greater than 10 8 .
  • a temperature-sensing fire detecting cable is composed of two detecting conductors, a fused insulating layer and an insulating sheath, and the two detecting conductors 13 and 14 are entangled with each other.
  • a smeltable insulating layer 15 is disposed between the strip detecting conductors, at least one of the two detecting conductors is a memory alloy wire, and two conductors are provided with an insulating guard
  • the sleeve 16 is used to insulate from the outside.
  • the two probe conductors are helically twisted together with a twist pitch of less than 1500 mm.
  • One of the two detecting conductors is coated with a smable insulating layer.
  • the memory alloy wire is excellent in flexibility at a normal temperature range, and once it exceeds this phase transition temperature, the strength and rigidity of the memory alloy wire become large.
  • the conventional temperature range of the present invention refers to the temperature range of the martensite phase of the memory alloy wire, and the design value of the martensitic reverse phase transition temperature A f can be selected and set in the range of 20 ° C to 160 ° C.
  • the conventional temperature range of the embodiment design is -40 ° C ⁇ 40 ° C, when the detection cable is heated, its temperature rises, when the temperature reaches the memory alloy wire martensite reverse phase transformation temperature A f
  • the memory alloy wire undergoes martensite reverse phase transformation, the strength increases and generates a large elastic force, and returns to the initial high-temperature design shape, that is, the alarm shape (generally a linear shape), and the temperature continues to rise to reach the meltable insulating layer 15
  • the two detecting conductors are pressed against each other, destroying the meltable insulating layer between the two detecting conductors, and the two detecting conductors make electrical contact, that is, a short circuit occurs. Call the police.
  • the temperature sensing cable includes two detecting conductors 17, 18, a smelable insulating layer 19, and an insulating guard. Set of 20.
  • the two detecting conductors 17, 18 are spirally twisted together, and the twisting pitch is less than 1500 mm.
  • the two detecting conductors are respectively covered with a smable insulating layer 19, at least one of the two detecting conductors is a memory alloy wire, and an outer insulating conductor 20 is disposed outside the two detecting conductors for being insulated from the outside.
  • the temperature sensing fire detecting cable includes three detecting conductors 21, 22, 25, and the first and second meltable insulating layers 23 are respectively wrapped on the two detecting conductors 21 and 22 disposed in parallel. 24.
  • the third detecting conductor 25 is wound around the two detecting conductors 21, 22.
  • the third detecting conductor 25 is a memory alloy wire, and the three detecting conductors are covered with an insulating sheath 26.
  • the first meltable insulating layer 23 and the second meltable insulating layer 24 have different melting point (or softening) temperature ranges.
  • the first meltable insulating layer When the temperature rises to the softening or melting temperature of the first meltable insulating layer, under the elastic force of the memory alloy wire, the first meltable insulating layer is destroyed, and the memory alloy wire is coated with the first meltable insulating layer.
  • the detecting conductor is electrically connected, that is, a short circuit occurs and a first-level alarm occurs; when the temperature continues to rise to reach the second
  • the meltable insulating layer is broken, and the memory alloy wire is electrically connected with the detecting conductor coated with the second meltable insulating layer, that is, occurs Short circuit and perform secondary alarm.
  • one of the two detecting conductors included in the fire detecting cable is a core conductor 27, and the other It is a sleeve conductor 28, the two detecting conductors are arranged together in a coaxial cable manner, and a smeltable insulating layer 29 is disposed between the two detecting conductors 27, 28, and the core conductor 27 is a memory alloy wire.
  • the original design shape of the memory alloy wire in a high temperature state is a sine wave shape or a coil spring shape, which is in a straight line state in a normal temperature range.
  • the memory alloy wire 27 undergoes martensite reverse phase transformation, the memory alloy wire elastic force increases, and the original design shape returns to a high temperature state, and when the temperature continues to rise,
  • the softening or melting temperature of the meltable insulating layer is under the elastic force of the memory alloy wire, the two detecting conductors are pressed against each other, destroying the meltable insulating layer between the two detecting conductors, and the two detecting conductors make electrical contact, That is, a short circuit occurs and an alarm is issued.
  • Figure 9 is a cross section of a fire detecting cable according to a seventh embodiment of the present invention.
  • one of the two detecting conductors is a core conductor 30, and the other is a sleeve conductor 31.
  • the two detecting conductors are arranged together in a coaxial cable structure, and a smelting insulating layer 32 is disposed between the two detecting conductors.
  • the core conductor is a memory alloy wire, and the insulating sheath 33 is laid on the sleeve conductor. Outside.
  • Fig. 10 is a longitudinal appearance view showing a fire detecting cable according to an eighth embodiment of the present invention.
  • the temperature-sensing fire detecting cable includes two detecting conductors, a smelable insulating layer, and an insulating sheath.
  • the two detecting conductors 34, 35 are arranged in parallel, and the smeltable insulating layer 36 is disposed between the two detecting conductors, at least one of the two detecting conductors is a memory alloy wire.
  • An insulating sheath 37 is disposed outside the two detecting conductors.
  • the conductor and the insulator in the present invention are opposite conductors and opposite insulators, and the conductor and the insulator can be distinguished by using a ratio of the electrical resistivity of the insulator to the electrical resistivity of the conductor at room temperature greater than 10 8 .
  • the original design high temperature state of the memory alloy wire is a coil spring shape which is in a straight line state in a normal temperature range.
  • the probe cable When the probe cable is heated, its temperature rises, the martensite reverse phase change occurs in the memory alloy wire, the memory alloy wire elastic force increases, and the original high temperature design shape (coil spring shape) is restored, when the temperature continues When rising to the softening or melting temperature of the meltable insulating layer 36, under the elastic force of the memory alloy wire, the two detecting conductors are pressed against each other, destroying the meltable insulating layer between the two detecting conductors, and the two detecting conductors are realized. Electrical contact, that is, a short circuit occurs and an alarm is issued.
  • the switch-type linear temperature-sensing fire detecting cable of the present invention needs to electrically connect one terminal resistor at one end of two detecting conductors (the resistance value is between 10 ⁇ and 100 ⁇ ⁇ ), and the two detecting conductors The other end is connected to the resistance signal measuring device, thereby forming a switch-line type temperature-sensing fire detector. Since the resistance signal detecting means and the connection method are conventional techniques, detailed description will not be given here.

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Abstract

A Kind of switch volume linetype temp sensing fire detecting cable based on shape memory alloy wire, which includes a pair of detecting conductors and insulated meltable layer.Said a pair of detecting conductors are parallel each other, said insulated meltable layer is deposited between said a pair of detecting conductors, and at least one of said a pair of detecting conductors is formed of a shape memory alloy wire.The invention can improve the working reliability of the switch volume linetype temp sensing fire detecting cable.

Description

基于记忆合金丝的开关量线型感温火灾探测线缆 技术领域  Switched wire type temperature sensing fire detection cable based on memory alloy wire
本发明涉及一种基于记忆合金丝的开关量线型感温火灾探测线 缆， 该探测线缆采用记忆合金丝作为探测导体， 当处在报警温度的 环境中时该探测导体将自动破坏其绝缘层， 产生报警信号。 背景技术  The invention relates to a switch wire type temperature sensing fire detecting cable based on a memory alloy wire, which uses a memory alloy wire as a detecting conductor, and the detecting conductor will automatically destroy its insulation when in an environment of alarm temperature. Layer, generating an alarm signal. Background technique
目前使用的传统的开关量线型感温探测线缆是一种用途广泛的 火灾探测线缆， 附图 1显示了传统的开关量线型感温探测线缆的结 构，在该探测线缆中，有一个外护套 1，该护套内有两条弹性导体 2、 3绞合在一起， 导体外面用一定融点的塑料层 4、 5包覆， 当探测线 缆某段受热时， 温度达到一定程度后， 塑料软化或熔融， 导体之间 相互接触， 即发生短路， 从而达到报告火警的目的。 这种探测线缆 的优点是： 当探测线缆上任意一点的温度达到设定的报警温度后， 探测线缆均可短路报警， 探测线缆报警灵敏度与受热长度无关， 因 此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。 缺点之一是这种感温探测线缆中的导体无论在正常情况下还是处在 报警温度的环境中时其弹性一样大， 同时比较硬、 脆， 在安装使用 过程中， 很怕机械外力， 而且施工难度大。 缺点之二是这种感温探 测电缆的导体容易生锈， 从而增大了导体及接线点的电阻值， 大大 地降低了报警的可靠性。 为此， 需要提出一种基于记忆合金丝的开 关量线型感温火灾探测线缆。 发明内容  The conventional switched-wire type temperature sensing cable currently used is a widely used fire detecting cable, and FIG. 1 shows the structure of a conventional switched-wire type temperature sensing cable in which the cable is detected. There is an outer sheath 1 in which two elastic conductors 2, 3 are twisted together, and the outer surface of the conductor is covered with a plastic layer 4, 5 of a certain melting point. When a certain section of the cable is heated, the temperature reaches After a certain degree, the plastic softens or melts, and the conductors are in contact with each other, that is, a short circuit occurs, thereby achieving the purpose of reporting a fire alarm. The advantage of this type of probe cable is: When the temperature of any point on the probe cable reaches the set alarm temperature, the probe cable can be short-circuited, and the sensitivity of the probe cable alarm is independent of the length of the heat, so the target is partially overheated. The detection sensitivity of fires caused by external fire sources is high. One of the disadvantages is that the conductor in the temperature sensing cable is as elastic as it is under normal conditions or in an alarm temperature environment, and is relatively hard and brittle. During installation and use, it is afraid of mechanical external force. And the construction is difficult. The second disadvantage is that the conductor of the temperature sensing cable is prone to rust, thereby increasing the resistance value of the conductor and the wiring point, and greatly reducing the reliability of the alarm. To this end, it is necessary to propose a wire-type temperature-sensing fire detecting cable based on a memory alloy wire. Summary of the invention
本发明的目的在于提供一种基于记忆合金丝的开关暈线型感温 火灾探测线缆， 该探测线缆中的一条探测导体是忆合金丝， 该探测 导体在常规温度范围下柔软性很好， 当其处在报警温度的环境中时 该探测导体将恢复到报警形状， 自动破坏其绝缘层， 产生报警信号。  The object of the present invention is to provide a switch halo type heat-sensitive fire detecting cable based on a memory alloy wire, wherein one of the detecting conductors is a wire alloy wire, and the detecting conductor is soft in a normal temperature range. When it is in the environment of the alarm temperature, the probe conductor will return to the alarm shape, automatically destroy its insulation layer and generate an alarm signal.
本发明的目的是由下述技术方案实现的： 一种基于记忆合金丝 的开关量线型感温火灾探测线缆， 其要点在于： 由两条探测导体、 可熔融绝缘层组成， 所述的两条探测导体成并行设置， 在所述的两 条探测导体之间设置有所述的可熔融绝缘层， 所述的两条探测导体 中至少一条是记忆合金丝。 The object of the present invention is achieved by the following technical solutions: A switch wire type temperature sensing fire detecting cable based on a memory alloy wire, the main points of which are: two detecting conductors, a smeltable insulating layer, wherein the two detecting conductors are disposed in parallel, and the smeltable insulating layer is disposed between the two detecting conductors, at least one of the two detecting conductors is a memory alloy wire.
本发明与已有技术相比具有如下优点：  Compared with the prior art, the invention has the following advantages:
1、 由于本发明采用了记忆合金丝作为探测导体， 该导体在常规 温度范围下柔软性良好， 便于探测线缆的安装， 当处在报警温度的 环境中时该探测导体将自动破坏其绝缘层， 产生报警信号， 有效的 减少了正常温度下探测线缆本身的误报警。  1. Since the invention adopts the memory alloy wire as the detecting conductor, the conductor has good flexibility under the normal temperature range, and is convenient for detecting the installation of the cable. When the temperature is in the alarm temperature environment, the detecting conductor will automatically destroy the insulating layer. , generate an alarm signal, effectively reducing the false alarm of the detection cable itself under normal temperature.
2、 由于本发明采用的记忆合金丝本身具有抗腐蚀性， 长期处于 腐蚀环境中时的电阻值不会发生很大变化， 可以有效的减少高腐蚀 环境下火灾探测线缆的误报警。  2. Since the memory alloy wire used in the present invention has corrosion resistance itself, the resistance value does not greatly change when it is in a corrosive environment for a long time, and the false alarm of the fire detection cable in a highly corrosive environment can be effectively reduced.
3、 由于本发明采用的记忆合金丝本身的弹性变化特性， 可以通 过提高记忆合金丝变形量的办法提高其报火警时的弹性应力， 大大 提高了开关量线型感温火灾探测线缆动作的可靠性。 附图说明  3. Due to the elastic variation characteristics of the memory alloy wire itself used in the present invention, the elastic stress of the fire alarm can be improved by increasing the deformation amount of the memory alloy wire, and the action of the switch type linear temperature fire detection cable is greatly improved. reliability. DRAWINGS
以下结合附图及实施例对本发明作进一步说明。  The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
图 1、 传统的开关量线型感温探测线缆的结构示意图  Figure 1. Schematic diagram of a traditional switch-line type temperature sensing cable
图 2、 本发明的探测线缆结构示意图；  Figure 2 is a schematic view showing the structure of the probe cable of the present invention;
图 3、 本发明实施例二的结构示意图；  3 is a schematic structural view of Embodiment 2 of the present invention;
图 4、 本发明实施例三的结构示意图；  4 is a schematic structural view of Embodiment 3 of the present invention;
图 5、 本发明实施例四的结构示意图；  Figure 5 is a schematic structural view of Embodiment 4 of the present invention;
图 6、 本发明实施例五的结构示意图；  Figure 6 is a schematic structural view of Embodiment 5 of the present invention;
图 7、 本发明实施例五的外观示意图；  Figure 7 is a schematic view showing the appearance of the fifth embodiment of the present invention;
图 8、 本发明实施例六的结构示意图；  Figure 8 is a schematic structural view of Embodiment 6 of the present invention;
图 9、 本发明实施例七的结构示意图； 和  Figure 9 is a schematic structural view of Embodiment 7 of the present invention; and
图 10、 本发明实施例八的结构示意图。 具体实施方式  FIG. 10 is a schematic structural view of Embodiment 8 of the present invention. detailed description
参见图 2 (附图仅显示探测线缆的横截面， 探测线缆的纵向外 观图省略） ， 本发明的感温火灾探测线缆， 由两条探测导体 （或半 导体） 6、 7、 可熔融绝缘层 8组成， 所述的两条探测导体 6、 7成并 行设置， 在所述的两条探测导体之间设置有所述的可熔融绝缘层 8， 所述的两条探测导体中至少一条是记忆合金丝。 所谓并行设置是指 两条探测导体平行设置、 缠绕设置（一根缠绕另一根或相互缠绕） 、 一条沿圆周方向包围另一条形成同轴线缆设置。 Referring to FIG. 2 (the drawing only shows the cross section of the detecting cable, the longitudinal appearance of the detecting cable is omitted), the temperature sensing fire detecting cable of the present invention is composed of two detecting conductors (or half) a conductor 6 , 7 , a fused insulating layer 8 , wherein the two detecting conductors 6 , 7 are arranged in parallel, and the smeltable insulating layer 8 is disposed between the two detecting conductors, At least one of the two probe conductors is a memory alloy wire. The so-called parallel arrangement means that two detecting conductors are arranged in parallel, wound (one winding another or intertwined), and one circumferentially surrounding the other to form a coaxial cable arrangement.
在本实施例中， 探测导体的长度可以设计成 50米〜 200米， 两 条探测导体中的一条是普通金属导体， 另一条是记忆合金丝。 普通 金属导体可以是空心导体、 实心导体或金属丝编织的导体， 两条探 测导体之间设置的可熔融绝缘层可以采取包覆在探测导体的表面上 的形式。  In this embodiment, the length of the detecting conductor can be designed to be 50 m to 200 m, one of the two detecting conductors is a common metal conductor, and the other is a memory alloy wire. The common metal conductor may be a hollow conductor, a solid conductor or a wire braided conductor, and the fused insulating layer disposed between the two probe conductors may take the form of being coated on the surface of the probe conductor.
本实施例中， 所述探测导体可以是常用金属丝或导电碳纤维丝 或碳素弹性钢丝， 或具有半导体性质的导电塑料或橡胶丝等。 所述 的记忆合金丝可以是镍钛记忆合金、 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； 所述的可熔融绝缘层可以是低密 度聚乙烯、 高密度聚乙烯、 线性低密度聚乙烯、 聚丙烯、 聚氯乙稀、 天然橡胶、 丁腈橡胶、 三元乙丙橡胶绝缘层中的一种。 可熔融绝缘 层的熔点在 40°C〜220°C范围。 本发明中的导体及绝缘体为相对导 体及相对绝缘体， 可以用在常温下绝缘体的电阻率与导体的电阻率 之比大于 108来区分导体与绝缘体。 In this embodiment, the detecting conductor may be a common metal wire or a conductive carbon fiber wire or a carbon elastic steel wire, or a conductive plastic or rubber wire having a semiconductor property. The memory alloy wire may be one of a nickel-titanium memory alloy, a nickel-titanium copper memory alloy, an iron-based memory alloy, and a copper-based memory alloy material; the meltable insulating layer may be a low density polyethylene, and a high density. One of polyethylene, linear low density polyethylene, polypropylene, polyvinyl chloride, natural rubber, nitrile rubber, and ethylene propylene diene rubber insulation. The melting point of the meltable insulating layer is in the range of 40 ° C to 220 ° C. The conductor and the insulator in the present invention are opposite conductors and opposite insulators, and the conductor and the insulator can be distinguished by using a ratio of the electrical resistivity of the insulator to the electrical resistivity of the conductor at room temperature greater than 10 8 .
图 3示出根据本发明第二实施例的火灾探测线缆的横截面， 在 本发明实施例二， 感温火灾探测线缆包括两条探测导体 9、 10、 可 熔融绝缘层 11、 绝缘护套 12。 其中， 两条探测导体 9、 10成并行设 置， 在两条探测导体之间设置有可熔融绝缘层 11， 两条探测导体中 的一条是记忆合金丝 10。两条探测导体外面设置有绝缘护套 12， 用 于与外界绝缘。本发明中的导体及绝缘体为相对导体及相对绝缘体， 可以用在常温下绝缘体的电阻率与导体的电阻率之比大于 108来区 分导体与绝缘体。 3 shows a cross section of a fire detection cable according to a second embodiment of the present invention. In the second embodiment of the present invention, the temperature sensing fire detecting cable includes two detecting conductors 9, 10, a smelable insulating layer 11, and an insulating guard. Set of 12. Wherein, the two detecting conductors 9, 10 are arranged in parallel, and a smelable insulating layer 11 is disposed between the two detecting conductors, and one of the two detecting conductors is a memory alloy wire 10. An insulating sheath 12 is disposed outside the two detecting conductors for insulation from the outside. The conductor and the insulator in the present invention are opposite conductors and opposite insulators, and the conductor and the insulator can be distinguished by using a ratio of the electrical resistivity of the insulator to the electrical resistivity of the conductor at room temperature greater than 10 8 .
参见图 4， 本发明实施例三的感温火灾探测线缆， 由两条探测 导体、 可熔融绝缘层、 绝缘护套组成， 所述的两条探测导体 13、 14 互相缠绕在一起， 在两条探测导体之间设置有可熔融绝缘层 15， 两 条探测导体中至少一条是记忆合金丝， 两条导体外面设置有绝缘护 套 16， 用于与外界绝缘。 两条探测导体呈螺旋式绞合在一起， 其绞 合节距小于 1500毫米。所述的两条探测导体中的一条探测导体上包 覆可熔融绝缘层。 Referring to FIG. 4, a temperature-sensing fire detecting cable according to a third embodiment of the present invention is composed of two detecting conductors, a fused insulating layer and an insulating sheath, and the two detecting conductors 13 and 14 are entangled with each other. A smeltable insulating layer 15 is disposed between the strip detecting conductors, at least one of the two detecting conductors is a memory alloy wire, and two conductors are provided with an insulating guard The sleeve 16 is used to insulate from the outside. The two probe conductors are helically twisted together with a twist pitch of less than 1500 mm. One of the two detecting conductors is coated with a smable insulating layer.
在本发明中， 记忆合金丝在常规温度范围下柔软性很好， 一旦 超过这个相变温度， 记忆合金丝的强度及刚性将变得很大。 本发明 的常规温度范围指的是记忆合金丝马氏体相温度范围， 其马氏体逆 相变终了温度 Af 的设计值可以在 20°C〜160°C范围内进行选择设 定， 本实施例设计的常规温度范围是 -40°C〜40°C， 在当所述探测线 缆受热时， 其温度随之上升， 当温度达到记忆合金丝马氏体逆相变 终了温度 Af时， 记忆合金丝发生马氏体逆相变， 强度增大并产生很 大的弹力， 并且恢复到初始的高温设计形状即报警形状 （一般是直 线形状）， 当温度继续上升达到可熔融绝缘层 15的软化或熔融温度 时， 在记忆合金丝的弹力作用下， 两条探测导体相互挤压， 破坏了 两条探测导体之间的可熔融绝缘层， 两条探测导体实现电接触， 即 发生短路进行报警。 In the present invention, the memory alloy wire is excellent in flexibility at a normal temperature range, and once it exceeds this phase transition temperature, the strength and rigidity of the memory alloy wire become large. The conventional temperature range of the present invention refers to the temperature range of the martensite phase of the memory alloy wire, and the design value of the martensitic reverse phase transition temperature A f can be selected and set in the range of 20 ° C to 160 ° C. The conventional temperature range of the embodiment design is -40 ° C ~ 40 ° C, when the detection cable is heated, its temperature rises, when the temperature reaches the memory alloy wire martensite reverse phase transformation temperature A f The memory alloy wire undergoes martensite reverse phase transformation, the strength increases and generates a large elastic force, and returns to the initial high-temperature design shape, that is, the alarm shape (generally a linear shape), and the temperature continues to rise to reach the meltable insulating layer 15 At the softening or melting temperature, under the elastic force of the memory alloy wire, the two detecting conductors are pressed against each other, destroying the meltable insulating layer between the two detecting conductors, and the two detecting conductors make electrical contact, that is, a short circuit occurs. Call the police.
图 5示出根据本发明第四实施例的火灾探测线缆的横截面， 在 本发明实施例四， 感温火灾探测线缆包括两条探测导体 17、 18、 可 熔融绝缘层 19、 绝缘护套 20。 其中， 所述的两条探测导体 17、 18 呈螺旋式绞合在一起， 其绞合节距小于 1500毫米。两条探测导体上 分别包覆可熔融绝缘层 19， 两条探测导体中至少一条是记忆合金 丝， 两条探测导体外面设置有绝缘护套 20， 用于与外界绝缘。  5 shows a cross section of a fire detection cable according to a fourth embodiment of the present invention. In the fourth embodiment of the present invention, the temperature sensing cable includes two detecting conductors 17, 18, a smelable insulating layer 19, and an insulating guard. Set of 20. Wherein, the two detecting conductors 17, 18 are spirally twisted together, and the twisting pitch is less than 1500 mm. The two detecting conductors are respectively covered with a smable insulating layer 19, at least one of the two detecting conductors is a memory alloy wire, and an outer insulating conductor 20 is disposed outside the two detecting conductors for being insulated from the outside.
图 6、 图 7示出本发明第五实施例的感温火灾探测线缆。 在本 实施例中， 感温火灾探测线缆中包括有三条探测导体 21、 22、 25 , 在两条并行设置的探测导体 21、 22上分别包覆第一、第二可熔融绝 缘层 23、 24， 第三条探测导体 25缠绕两条探测导体 21、 22上。 第 三条探测导体 25是一条记忆合金丝，三条探测导体外包覆绝缘护套 26。其中，第一可熔融绝缘层 23与第二可熔融绝缘层 24的熔点（或 软化） 温度范围不同。 当温度上升达到第一可熔融绝缘层的软化或 熔融温度时， 在记忆合金丝的弹力作用下， 破坏了其间的第一可熔 融绝缘层， 记忆合金丝与包覆有第一可熔融绝缘层的探测导体发生 电连接， 即发生短路并进行一级报警； 当温度继续上升达到第二可 熔融绝缘层的软化或熔融温度时， 在记忆合金丝的弹力作用下， 破 坏了其间的可熔融绝缘层， 记忆合金丝与包覆有第二可熔融绝缘层 的探测导体发生电连接， 即发生短路并进行二级报警。 6 and 7 show a temperature-sensing fire detecting cable according to a fifth embodiment of the present invention. In the present embodiment, the temperature sensing fire detecting cable includes three detecting conductors 21, 22, 25, and the first and second meltable insulating layers 23 are respectively wrapped on the two detecting conductors 21 and 22 disposed in parallel. 24. The third detecting conductor 25 is wound around the two detecting conductors 21, 22. The third detecting conductor 25 is a memory alloy wire, and the three detecting conductors are covered with an insulating sheath 26. The first meltable insulating layer 23 and the second meltable insulating layer 24 have different melting point (or softening) temperature ranges. When the temperature rises to the softening or melting temperature of the first meltable insulating layer, under the elastic force of the memory alloy wire, the first meltable insulating layer is destroyed, and the memory alloy wire is coated with the first meltable insulating layer. The detecting conductor is electrically connected, that is, a short circuit occurs and a first-level alarm occurs; when the temperature continues to rise to reach the second When the softening or melting temperature of the molten insulating layer is under the elastic force of the memory alloy wire, the meltable insulating layer is broken, and the memory alloy wire is electrically connected with the detecting conductor coated with the second meltable insulating layer, that is, occurs Short circuit and perform secondary alarm.
图 8示出根据本发明第六实施例的火灾探测线缆的横截面， 在 本发明的实施例六中， 火灾探测线缆包括的两条探测导体中的一条 是芯状导体 27， 另一条是套状导体 28， 两条探测导体套装在一起设 置成呈同轴电缆的方式， 两条探测导体 27、 28之间设有可熔融绝缘 层 29， 芯状导体 27是记忆合金丝。 在本实施例中， 记忆合金丝在 高温状态的原始设计形状是正弦波形状或螺旋弹簧形状， 在常规温 度范围下呈直线状态。在当所述探测线缆受热时， 其温度随之上升， 记忆合金丝 27发生马氏体逆相变， 记忆合金丝弹力增大， 并且恢复 到高温状态的原始设计形状， 当温度继续上升达到可熔融绝缘层的 软化或熔融温度时， 在记忆合金丝的弹力作用下， 两条探测导体相 互挤压， 破坏了两条探测导体之间的可熔融绝缘层， 两条探测导体 实现电接触， 即发生短路并进行报警。  8 shows a cross section of a fire detecting cable according to a sixth embodiment of the present invention. In the sixth embodiment of the present invention, one of the two detecting conductors included in the fire detecting cable is a core conductor 27, and the other It is a sleeve conductor 28, the two detecting conductors are arranged together in a coaxial cable manner, and a smeltable insulating layer 29 is disposed between the two detecting conductors 27, 28, and the core conductor 27 is a memory alloy wire. In the present embodiment, the original design shape of the memory alloy wire in a high temperature state is a sine wave shape or a coil spring shape, which is in a straight line state in a normal temperature range. When the probe cable is heated, its temperature rises, the memory alloy wire 27 undergoes martensite reverse phase transformation, the memory alloy wire elastic force increases, and the original design shape returns to a high temperature state, and when the temperature continues to rise, When the softening or melting temperature of the meltable insulating layer is under the elastic force of the memory alloy wire, the two detecting conductors are pressed against each other, destroying the meltable insulating layer between the two detecting conductors, and the two detecting conductors make electrical contact, That is, a short circuit occurs and an alarm is issued.
图 9示根据本发明第七实施例的火灾探测线缆的横截面， 在本 发明的实施例七中， 所述两条探测导体中的一条是芯状导体 30， 另 一条是套状导体 31， 两条探测导体套装在一起呈同轴线缆式的结 构， 两条探测导体之间设有可熔融绝缘层 32， 所述芯状导体是记忆 合金丝， 绝缘护套 33敷设在套状导体的外面。  Figure 9 is a cross section of a fire detecting cable according to a seventh embodiment of the present invention. In the seventh embodiment of the present invention, one of the two detecting conductors is a core conductor 30, and the other is a sleeve conductor 31. The two detecting conductors are arranged together in a coaxial cable structure, and a smelting insulating layer 32 is disposed between the two detecting conductors. The core conductor is a memory alloy wire, and the insulating sheath 33 is laid on the sleeve conductor. Outside.
图 10 示出根据本发明第八实施例的火灾探测线缆的纵向外观 图。 在本发明实施例八， 感温火灾探测线缆包括两条探测导体、 可 熔融绝缘层、 绝缘护套。 其中， 两条探测导体 34、 35成平行设置， 在两条探测导体之间设置有所述的可熔融绝缘层 36， 两条探测导体 中至少一条是记忆合金丝。 两条探测导体外面设置有绝缘护套 37。 本发明中的导体及绝缘体为相对导体及相对绝缘体， 可以用在常温 下绝缘体的电阻率与导体的电阻率之比大于 108来区分导体与绝缘 体。 在本实施例中， 记忆合金丝的原始设计高温状态是螺旋弹簧形 状， 在常规温度范围下呈直线状态。 在当所述探测线缆受热时， 其 温度随之上升， 记忆合金丝发生马氏体逆相变， 记忆合金丝弹力增 大， 并且恢复到原始高温设计形状 （螺旋弹簧形状） ， 当温度继续 上升达到可熔融绝缘层 36的软化或熔融温度时，在记忆合金丝的弹 力作用下， 两条探测导体相互挤压， 破坏了两条探测导体之间的可 熔融绝缘层， 两条探测导体实现电接触， 即发生短路并进行报警。 Fig. 10 is a longitudinal appearance view showing a fire detecting cable according to an eighth embodiment of the present invention. In the eighth embodiment of the present invention, the temperature-sensing fire detecting cable includes two detecting conductors, a smelable insulating layer, and an insulating sheath. Wherein, the two detecting conductors 34, 35 are arranged in parallel, and the smeltable insulating layer 36 is disposed between the two detecting conductors, at least one of the two detecting conductors is a memory alloy wire. An insulating sheath 37 is disposed outside the two detecting conductors. The conductor and the insulator in the present invention are opposite conductors and opposite insulators, and the conductor and the insulator can be distinguished by using a ratio of the electrical resistivity of the insulator to the electrical resistivity of the conductor at room temperature greater than 10 8 . In the present embodiment, the original design high temperature state of the memory alloy wire is a coil spring shape which is in a straight line state in a normal temperature range. When the probe cable is heated, its temperature rises, the martensite reverse phase change occurs in the memory alloy wire, the memory alloy wire elastic force increases, and the original high temperature design shape (coil spring shape) is restored, when the temperature continues When rising to the softening or melting temperature of the meltable insulating layer 36, under the elastic force of the memory alloy wire, the two detecting conductors are pressed against each other, destroying the meltable insulating layer between the two detecting conductors, and the two detecting conductors are realized. Electrical contact, that is, a short circuit occurs and an alarm is issued.
本发明的开关量线型感温火灾探测线缆在实际的应用中需要在 两条探测导体一端电连接一个终端电阻器 （其电阻值在 10Ω〜 100ΜΩ之间取值） ， 两条探测导体的另一端接电阻信号测量装置， 由此构成开关量线型感温火灾探测器。 由于电阻信号检测装置及连 接方式是常规技术， 在此不进行详细说明。  In the practical application, the switch-type linear temperature-sensing fire detecting cable of the present invention needs to electrically connect one terminal resistor at one end of two detecting conductors (the resistance value is between 10 Ω and 100 Μ Ω), and the two detecting conductors The other end is connected to the resistance signal measuring device, thereby forming a switch-line type temperature-sensing fire detector. Since the resistance signal detecting means and the connection method are conventional techniques, detailed description will not be given here.

Claims

权利要求书 Claim
1、一种基于记忆合金丝的开关量线型感温火灾探测线缆， 其特 征在于： 它包括两条探测导体、 和至少一个可熔融绝缘层， 所述的 两条探测导体成并行设置， 所述的可熔融绝缘层设置在所述的两条 探测导体之间， 所述的两条探测导体中至少一条是记忆合金丝。 A switch wire type temperature sensing fire detecting cable based on a memory alloy wire, comprising: two detecting conductors, and at least one smeltable insulating layer, wherein the two detecting conductors are arranged in parallel, The smeltable insulating layer is disposed between the two detecting conductors, and at least one of the two detecting conductors is a memory alloy wire.
2、根据权利要求 1所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述的两条探测导体互相缠绕在一起。 A switch-type, temperature-sensing fire detecting cable according to claim 1, wherein: said two detecting conductors are entangled with each other.
3、根据权利要求 2所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述的两条探测导体或其中的一条探测导体上包覆有可熔 融绝缘层。 A switch-line type temperature-sensing fire detecting cable according to claim 2, wherein said two detecting conductors or one of said detecting conductors are coated with a fusible insulating layer.
4、根据权利要求 1所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述两条探测导体中的一条是芯状导体， 另一条是套状导 体， 两条探测导体设置成同轴地套装在一起。 4. The switch-line type temperature-sensing fire detecting cable according to claim 1, wherein: one of the two detecting conductors is a core conductor, and the other one is a sleeve conductor, and two detecting conductors are disposed. Set together in a coaxial manner.
5、根据权利要求 4所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述芯状导体是记忆合金丝。 The switch-line type temperature-sensing fire detecting cable according to claim 4, wherein the core conductor is a memory alloy wire.
6、根据权利要求 4所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述的两条探测导体或其中的一条探测导体上包覆有可熔 融绝缘层。 The switch-line type temperature-sensing fire detecting cable according to claim 4, wherein the two detecting conductors or one of the detecting conductors are coated with a fusible insulating layer.
7、根据权利要求 1所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述的两条探测导体设置成相互平行。 A switch-line type temperature-sensing fire detecting cable according to claim 1, wherein said two detecting conductors are disposed in parallel with each other.
8、根据权利要求 7所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述的两条探测导体或其中的一条探测导体上包覆有可熔 融绝缘层。 The switch-line type temperature-sensing fire detecting cable according to claim 7, wherein the two detecting conductors or one of the detecting conductors are coated with a meltable insulating layer.
9、根据权利要求 1所述的开关量线型感温火灾探测线缆， 其特 征在于： 所述的两条探测导体上分别包覆有可熔融绝缘层， 所述火 灾探测线缆包括缠绕在所述两条探测导体上的第三条探测导体。 The switch-type temperature sensing fire detecting cable according to claim 1, wherein: the two detecting conductors are respectively coated with a smelable insulating layer, and the fire detecting cable comprises a winding a third strip of conductors on the two probe conductors.
10、 根据权利要求 1-9任意一个所述的幵关量线型感温火灾探 测线缆， 其特征在于： 它进一步包括绝缘护套， 设置在所述的两条 探测导体的外面。 10. A shut-off type line type temperature sensing fire detecting cable according to any one of claims 1-9, characterized in that it further comprises an insulating sheath disposed outside said two detecting conductors.
11、根据权利要求 1-10任意一个所述的开关量线型感温火灾探 测线缆， 其特征在于： 所述的记忆合金丝可以是镍钛记忆合金、 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； 所述 的可熔融绝缘层可以是低密度聚乙烯、 高密度聚乙烯、 线性低密度 聚乙烯、 聚丙烯、 聚氯乙稀、 天然橡胶、 丁腈橡胶、 三元乙丙橡胶 绝缘层中的一种。 The switch-type linear temperature-sensing fire detecting cable according to any one of claims 1 to 10, wherein: the memory alloy wire is a nickel-titanium memory alloy, a nickel-titanium-copper memory alloy, and an iron-based memory. One of an alloy or a copper-based memory alloy material; the meltable insulating layer may be low density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, polyvinyl chloride, natural rubber, butyronitrile One of rubber, EPDM insulation.
更正页（細则 ¥ 91条） Correction page (rules ¥ 91)
PCT/CN2006/000881 2005-09-29 2006-04-30 Switch volume linetype temp sensing fire detecting cable based on shape memory alloy wire WO2007036097A1 (en)

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CNA2005101058157A CN1941013A (en) 2005-09-29 2005-09-29 Switch linear temperature-sensing fire detecting cable based on memory alloy wire
CN200510105815.7 2005-09-29

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CN103877688A (en) * 2014-03-10 2014-06-25 青岛中阳消防科技有限公司 Self-starting thermal power generation device
CN104318704A (en) * 2014-10-11 2015-01-28 青岛中阳消防科技有限公司 Switching linear passive temperature sensing element

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