WO2000045395A1 - An over-load resistant fireproof wire - Google Patents

An over-load resistant fireproof wire Download PDF

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Publication number
WO2000045395A1
WO2000045395A1 PCT/CN1999/000012 CN9900012W WO0045395A1 WO 2000045395 A1 WO2000045395 A1 WO 2000045395A1 CN 9900012 W CN9900012 W CN 9900012W WO 0045395 A1 WO0045395 A1 WO 0045395A1
Authority
WO
WIPO (PCT)
Prior art keywords
mica tape
conductor
wire
over
resistant
Prior art date
Application number
PCT/CN1999/000012
Other languages
French (fr)
Chinese (zh)
Inventor
Xinhua Tang
Original Assignee
Xinhua Tang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xinhua Tang filed Critical Xinhua Tang
Priority to PCT/CN1999/000012 priority Critical patent/WO2000045395A1/en
Priority to AU21479/99A priority patent/AU2147999A/en
Publication of WO2000045395A1 publication Critical patent/WO2000045395A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame

Definitions

  • the invention relates to an overload-resistant fire-resistant electric wire. Background technique
  • the overload-resistant fire-resistant electric wire of the present invention is composed of a conductor, a mica tape, and an insulating layer.
  • the mica tape is provided between the conductor and the insulating layer, and the mica tape is longitudinally wrapped on the outer surface of the conductor. Bands are 1-8 layers.
  • the speed of the longitudinal mica tape can be synchronized with the speed of the existing cable extruder during the production process.
  • a small wire diameter of less than 10 square is taken as an example. Can produce 50-120 meters per minute per shift It can produce more than 30 kilometers in 8 hours.
  • the coating of the mica tape and the extrusion of the wire are formed at the same time in the same process, so the production cost is greatly reduced. As a result, wires with mica tapes as high-temperature insulators have entered the civilian field.
  • FIG. 1 is a detailed structural diagram of an overload-resistant anti-inflammatory wire of the present invention. The best way to implement the invention
  • the overload-resistant fire-resistant wire shown in FIG. 1 is composed of a conductor 1, a mica tape 2, and an insulation layer 3.
  • the mica tape 2 is provided between the conductor 1 and the insulation layer 3.
  • the outer surface of the conductor 1 is covered with a layer of mica tape. 2.
  • the insulation sheath is damaged (melted or carbonized), because the high-melting insulation material is longitudinally wrapped on the outer surface of the conductor 1;-mica tape, will not cause the wire phase
  • the zero-phase contact causes a short circuit, thereby avoiding a fire caused by a short circuit of the wire.
  • the number of layers of longitudinally wrapped mica tapes can be determined according to specific needs.
  • the mica tape longitudinal wrapping process of the overload-resistant fire-resistant wire of the present invention is first wrapped on a conductor through a molding die, and then enters a core sleeve with a bell mouth for insulation extrusion.
  • the diameter of the inner hole of the mold core is equal to the outer diameter of the conductor plus three times the thickness of the mica tape, and then an appropriate margin is placed. It is advisable for the mica tape to wrap around the conductor surface at 30% -50%.
  • the molding die can be omitted because the mica tape is narrow.
  • the mica tape should be a single-sided mica tape with a thickness of not more than 0.14mm, and the short-term heat resistance can reach 1000 degrees.

Landscapes

  • Insulated Conductors (AREA)

Abstract

The invention discloses a over-load resistant fireproof wire which consists of conductor, mica tape, and insulative layer, in which mica tape is disposed between conductor and insulative layer, and mica tape lapped longitudinal on the outer surface of the conductor, during the production mica tape and insulative layer can process in one step, resulting in simply manufactory process and the effect of reducing cost.

Description

一种耐过载防火电线 技术领域  TECHNICAL FIELD
本发明涉及一种耐过载防火电线。 背景技术  The invention relates to an overload-resistant fire-resistant electric wire. Background technique
目前， 国内的电线电缆行业， 现有的云母带使用技术有两 种， 一种是切线式绕包， 另一种是同心式绕包， 这两种绕包方式 有一共同点就是在导体处将云母按一定角度搭界 50 %左右作圆 周运动， 绕包 2 - 4层， 成盘后再去挤塑机作绝缘护套的挤出。 切线式绕包每班按 8小时计， 产量一般在 800 - 1200米； 同心式 绕包一 it 也在 1500 - 2000米。 这两种方式在生产过程中的工艺 复杂。 近年来， 因电流过载， 导体过热， 导线短路引发的火灾很 多。 并且采用云母带包复的形式， 成本大而不能进入民用电线领 域。 发明的概要  At present, in the domestic wire and cable industry, there are two types of existing mica tape use technologies, one is tangential wrapping and the other is concentric wrapping. The two wrapping methods have one thing in common at the conductor. Mica makes a circular motion around 50% of the boundary at a certain angle, and wraps around 2-4 layers, and then it is extruded into an extruder for insulation sheath after forming a disk. Tangent winding is based on 8 hours per shift, and the output is generally 800-1200 meters; concentric winding is also 1500-2000 meters. These two methods are complicated in the production process. In recent years, due to current overload, conductors have overheated, and many short circuits have caused fires. In addition, it is in the form of mica tape wrapping, which costs a lot and cannot enter the field of civilian electric wires. Summary of the invention
本发明的目的在于克服已有技术之不足， 提供一种能简化 制造工艺、 加快生产速度、 降低成本的耐过载防火电线。 为了达到上述目的， 本发明的耐过载防火电线由导体、 云 母带、 绝缘层组成， 所述的云母带设在导体与绝缘层之间， 在导 体的外表面纵包云母带， 纵包的云母带为 1 - 8层。 工业应用性  The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an overload resistant fire resistant wire which can simplify the manufacturing process, speed up the production speed, and reduce the cost. In order to achieve the above object, the overload-resistant fire-resistant electric wire of the present invention is composed of a conductor, a mica tape, and an insulating layer. The mica tape is provided between the conductor and the insulating layer, and the mica tape is longitudinally wrapped on the outer surface of the conductor. Bands are 1-8 layers. Industrial applicability
采用了上述的结构后， 由于导体表面纵包云母带， 在生产 过程中， 纵包云母带的速度就可与现有的线缆挤塑机速度同步， 以 10平方以下的小线径为例， 每分钟可生产 50 - 120米， 每班 8 小时可生产 30公里以上； 另外云母带的包复与电线挤出是在 同一工序上一次成型， 所以大大降低了生产成本。 因而使以云母 带作高温绝缘体的电线进入民用领域。 附图的简要说明 After the above structure is adopted, since the mica tape is longitudinally wrapped on the surface of the conductor, the speed of the longitudinal mica tape can be synchronized with the speed of the existing cable extruder during the production process. A small wire diameter of less than 10 square is taken as an example. Can produce 50-120 meters per minute per shift It can produce more than 30 kilometers in 8 hours. In addition, the coating of the mica tape and the extrusion of the wire are formed at the same time in the same process, so the production cost is greatly reduced. As a result, wires with mica tapes as high-temperature insulators have entered the civilian field. Brief description of the drawings
图 1为本发明的耐过载防炎电线的具体的结构示意图。 实现本发明的最佳方式  FIG. 1 is a detailed structural diagram of an overload-resistant anti-inflammatory wire of the present invention. The best way to implement the invention
如图 1所示的耐过载防火电线， 它由导体 1、 云母带 2、 绝 缘层 3组成， 云母带 2设在导体 1与绝缘层 3之间， 导体 1的外 表面纵包一层云母带 2。 应用过程中， 当电流过载、 导体过热致 使绝缘护套损坏 （熔化或炭化） ， 由于在导体 1外表面纵包有高 熔点的绝缘材; —云母带， 不会引起电线相-相、 相-零相接触 而短路， 从而避免了导线短路引起的火灾发生。 对于纵包的云母 带的层数可根据具体的需要而定， 如用于小规 氏压线路， 只需 纵包一层， 对于高压线路可以纵色云母带 3层或 4层。 本发明耐过载防火电线的云母带纵包工艺， 先通过一成型模 包复在导体上， 再进入带有喇叭口的模芯套筒进行绝缘挤出。 所 述的模芯内孔直径， 其大小为导体外径加三倍云母带厚度再放适 当余量。 云母带在导体表面纵包以 30%— 50%搭界为宜。 对于标 称截面 4mm2以下的电线， 因云母带较窄， 成型模可以省去。 云母带宜用厚度不大于 0.14mm的单面云母带， 短期耐热可达 1000度。 The overload-resistant fire-resistant wire shown in FIG. 1 is composed of a conductor 1, a mica tape 2, and an insulation layer 3. The mica tape 2 is provided between the conductor 1 and the insulation layer 3. The outer surface of the conductor 1 is covered with a layer of mica tape. 2. In the application process, when the current is overloaded or the conductor is overheated, the insulation sheath is damaged (melted or carbonized), because the high-melting insulation material is longitudinally wrapped on the outer surface of the conductor 1;-mica tape, will not cause the wire phase The zero-phase contact causes a short circuit, thereby avoiding a fire caused by a short circuit of the wire. The number of layers of longitudinally wrapped mica tapes can be determined according to specific needs. For example, for small gauge pressure lines, only one longitudinally wrapped layer is required. For high-voltage lines, three or four layers of longitudinally colored mica tapes can be used. The mica tape longitudinal wrapping process of the overload-resistant fire-resistant wire of the present invention is first wrapped on a conductor through a molding die, and then enters a core sleeve with a bell mouth for insulation extrusion. The diameter of the inner hole of the mold core is equal to the outer diameter of the conductor plus three times the thickness of the mica tape, and then an appropriate margin is placed. It is advisable for the mica tape to wrap around the conductor surface at 30% -50%. For wires with a nominal cross-section of 4 mm 2 or less, the molding die can be omitted because the mica tape is narrow. The mica tape should be a single-sided mica tape with a thickness of not more than 0.14mm, and the short-term heat resistance can reach 1000 degrees.

Claims

权利要求 Rights request
1. 一种耐过载防火电线， 由导体 (1)、 云母带 (2)、 绝缘层 (3)组 成， 所述的云母带 (2 殳在导体 (1)与绝缘层 (3)之间， 1. An overload-resistant fire-resistant wire, comprising a conductor (1), a mica tape (2), and an insulation layer (3), wherein the mica tape ( 2 ) is between the conductor (1) and the insulation layer (3),
其特征在于 所述的导体 (1)的外表面纵包所述的云母带 (2)。  It is characterized in that the outer surface of the conductor (1) wraps the mica tape (2) longitudinally.
2. 根据权利要求 1所述的耐过载防火电线， 2. The overload-resistant fire-resistant wire according to claim 1,
其特征在于 在所述的导体 (1)外表面纵包的所述的云母带 (2) 为 1 一 8层。  It is characterized in that the mica tape (2) longitudinally wrapped on the outer surface of the conductor (1) is 1 to 8 layers.
PCT/CN1999/000012 1999-01-28 1999-01-28 An over-load resistant fireproof wire WO2000045395A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN1999/000012 WO2000045395A1 (en) 1999-01-28 1999-01-28 An over-load resistant fireproof wire
AU21479/99A AU2147999A (en) 1999-01-28 1999-01-28 An over-load resistant fireproof wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN1999/000012 WO2000045395A1 (en) 1999-01-28 1999-01-28 An over-load resistant fireproof wire

Publications (1)

Publication Number Publication Date
WO2000045395A1 true WO2000045395A1 (en) 2000-08-03

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Application Number Title Priority Date Filing Date
PCT/CN1999/000012 WO2000045395A1 (en) 1999-01-28 1999-01-28 An over-load resistant fireproof wire

Country Status (2)

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AU (1) AU2147999A (en)
WO (1) WO2000045395A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018182792A1 (en) * 2017-03-31 2018-10-04 Wire Holdings, Llc Dba Radix Wire Free air fire alarm cable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234523A (en) * 1941-03-11 Insulated electrical conductor and method for its production
EP0513797A2 (en) * 1991-05-17 1992-11-19 TECNOPROGET DI ZANETTIN B. & C. S.a.s. Device for covering cables or the like, by longitudinal lapping with tapes, under constant tension
JPH06309947A (en) * 1993-04-23 1994-11-04 Yazaki Corp Fire resistant electric wire
JPH07176220A (en) * 1993-12-20 1995-07-14 Showa Electric Wire & Cable Co Ltd Fireproof electric wire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234523A (en) * 1941-03-11 Insulated electrical conductor and method for its production
EP0513797A2 (en) * 1991-05-17 1992-11-19 TECNOPROGET DI ZANETTIN B. & C. S.a.s. Device for covering cables or the like, by longitudinal lapping with tapes, under constant tension
JPH06309947A (en) * 1993-04-23 1994-11-04 Yazaki Corp Fire resistant electric wire
JPH07176220A (en) * 1993-12-20 1995-07-14 Showa Electric Wire & Cable Co Ltd Fireproof electric wire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018182792A1 (en) * 2017-03-31 2018-10-04 Wire Holdings, Llc Dba Radix Wire Free air fire alarm cable
US10354779B2 (en) 2017-03-31 2019-07-16 Radix Wire & Cable, Llc Free air fire alarm cable

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Publication number Publication date
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