WO2020224135A1 - 一种绝缘管内部加格栅的保护元件 - Google Patents

一种绝缘管内部加格栅的保护元件 Download PDF

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Publication number
WO2020224135A1
WO2020224135A1 PCT/CN2019/104295 CN2019104295W WO2020224135A1 WO 2020224135 A1 WO2020224135 A1 WO 2020224135A1 CN 2019104295 W CN2019104295 W CN 2019104295W WO 2020224135 A1 WO2020224135 A1 WO 2020224135A1
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WIPO (PCT)
Prior art keywords
melt
insulating tube
arc extinguishing
grid
protection element
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PCT/CN2019/104295
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English (en)
French (fr)
Inventor
南式荣
杨漫雪
陈慷
Original Assignee
南京萨特科技发展有限公司
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Application filed by 南京萨特科技发展有限公司 filed Critical 南京萨特科技发展有限公司
Publication of WO2020224135A1 publication Critical patent/WO2020224135A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/08—Fusible members characterised by the shape or form of the fusible member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/165—Casings
    • H01H85/175—Casings characterised by the casing shape or form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/38—Means for extinguishing or suppressing arc

Definitions

  • the invention relates to the technical field of circuit protection devices, in particular to a protection element with a fuse function.
  • miniature protection elements are all insulated tubular structures. With the development of science and technology and the needs of daily life, miniature protection elements not only require a miniaturized design, but also a high breaking capacity.
  • FIG. 1 it is a protection element in the prior art, including an insulating tube 2', end caps 3'located at both ends of the insulating tube, and a melt 5'welded to the end caps at both ends by soldering tin 1', wherein The insulating tube is filled with an arc extinguishing material 4'that wraps the melt.
  • the breaking of the miniature protection elements on the market is realized by filling the arc extinguishing material, and it is difficult to further improve the breaking capacity of the protection element.
  • the objective of the present invention is to provide a new type of protection element that can improve the breaking capacity of the protection element.
  • a protective element with a grille inside an insulating pipe comprising an insulating pipe and end caps located at both ends of the insulating pipe. At least one grille is arranged in the insulating pipe. The grille divides the insulating pipe into at least two mutually independent housings. Each containing cavity is provided with a melt, and the melt in each containing cavity is connected with the end caps at both ends of the insulating tube; each containing cavity is filled with an arc extinguishing material.
  • the grid is in the shape of a flat plate, and two ends of the grid are respectively connected with the end caps at both ends of the insulating tube, and the grid divides the insulating tube into at least two accommodating cavities that are not connected to each other. Each has a melt.
  • the cross section of the grid is a cross-section, and both ends of the grid are respectively connected to the end caps at both ends of the insulating tube.
  • the grid divides the insulating tube into four accommodating chambers that are not connected to each other. Each containing cavity is provided with a melt.
  • the grille is formed by staggering multiple horizontal plates and multiple vertical plates, and the cross section of the grille is a plurality of "well" shapes, and the two ends of the grille are respectively connected with the end caps at the two ends of the insulating pipe ,
  • the grid divides the insulating tube into a number of accommodating cavities that are not connected to each other, and each accommodating cavity is provided with a melt.
  • the melt has a sheet-like flat wire structure, which increases the contact area between the melt and the arc extinguishing material, thereby increasing the contact area between the arc drawing and the arc extinguishing material during arc drawing, improves arc extinguishing efficiency and improves breaking capacity.
  • a grid is added to divide the inside of the insulating tube into several independent cavities, and the melt and the accommodating cavity of the insulating tube are divided into several parts (at least 2 melts), so as to pass through 2 during the breaking process. More than one melt is shunted, and each melt is responsible for part of the breaking current, thereby improving the breaking capacity by reducing the breaking current.
  • the arc extinguishing material extinguishes the arc, it will extinguish the arc of the melt wrapped in the center, and the arc extinguishing material closer to the melt has priority. Therefore, the arc extinguishing material can only play the role of arc extinguishing when it is close to the melt.
  • the arc extinguishing material can be divided into several parts according to the arc extinguishing characteristics of the arc extinguishing material, and the melt is respectively wrapped to maximize the arc extinguishing effect of the arc extinguishing material.
  • a protection element includes an insulating tube and end caps located at both ends of the insulating tube.
  • the insulating tube is provided with at least two mutually independent accommodating cavities, each accommodating cavity is provided with a melt, and each accommodating cavity The melt is connected with the end caps at both ends of the insulating tube; each containing cavity is filled with arc extinguishing materials.
  • a plurality of accommodating cavities independent of each other are provided in the insulating tube, and the cross section of the insulating tube is honeycomb-shaped.
  • a grid is arranged in the insulating tube, and the grid is arranged between the mutually independent receiving chambers and is isolated by the grid.
  • the melt has a sheet-like flat wire structure, which increases the contact area between the melt and the arc extinguishing material, thereby increasing the contact area between the arc drawing and the arc extinguishing material during arc drawing, improves arc extinguishing efficiency and improves breaking capacity.
  • the inside of the insulating tube is divided into several accommodating cavities, and the melt is divided into several parts corresponding to the accommodating cavity of the insulating tube (at least 2 melts), so that more than 2 melts are used in the breaking process
  • each melt bears part of the breaking current, thereby improving the breaking capacity by reducing the breaking current.
  • the arc extinguishing material can be divided into several parts according to the arc extinguishing characteristics of the arc extinguishing material, and the melt is respectively wrapped to maximize the arc extinguishing effect of the arc extinguishing material.
  • FIG. 1 is a schematic cross-sectional structure diagram of a miniature protection element in the prior art
  • FIG. 2 is a schematic longitudinal cross-sectional view of the protection element of the first embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a transverse cross-sectional view of the protection element of the first embodiment of the present invention.
  • FIG. 4 is a schematic longitudinal cross-sectional view of the protection element of the second embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a transverse cross-section of the protection element of the second embodiment of the present invention.
  • Fig. 6 is a schematic longitudinal cross-sectional view of a protection element of the third embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a transverse cross-sectional view of a protection element according to a third embodiment of the present invention.
  • FIG. 8 is a schematic longitudinal cross-sectional view of the protection element of the fourth embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a transverse cross-sectional view of the protection element of the fourth embodiment of the present invention.
  • FIG. 10 is a schematic longitudinal cross-sectional view of the protection element of the fifth embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a transverse cross-section of the protection element of the fifth embodiment of the present invention.
  • the protection element in this embodiment especially a miniature protection element, includes solder 1, insulating tube 2, electrode 3, arc extinguishing material 4, double melt 5-1/5- 2.
  • solder 1 insulating tube 2
  • electrode 3 arc extinguishing material 4
  • double melt 5-1/5- 2 There is a plate-shaped grid 6 inside the insulating tube.
  • the grille 6 in the insulating tube can be made of ceramic material, or an insulating material such as PCB; it can be fabricated and molded together with the insulating tube 2, or it can be separately fabricated and molded and placed in the insulating tube.
  • the insulating tube 2 is tubular in shape with a square or circular shape, with a grid 6 and a containing cavity formed inside; the electrode 3 is a matching conductive metal cap sleeved on it, and is set at both ends of the insulating tube 2, a double melt 5
  • the two ends of -1/5-2 are fixed between the electrodes 3 at both ends by solder 1 and are electrically connected to the electrodes 3 at both ends.
  • the double melt 5-1/5-2 is arranged in the arc extinguishing material 4.
  • the breaking condition is 250V50A.
  • the fuse becomes two melts and bears 250V25A respectively. Breaking conditions. Under the same conditions, the breaking capacity of 250V25A is easier to achieve than the breaking capacity of 250V50A.
  • the grid 6 in the housing cavity of the insulating tube 2 can effectively isolate the arc drawn when each melt is broken and be used in production and product applications. It can avoid the mutual influence of the two melts 5-1/5-2, so as to achieve the breaking requirements of the fuse.
  • the arc extinguishing material 4 plays the role of arc extinguishing.
  • the arc extinguishing material 4 When the arc extinguishing material 4 extinguishes the arc, the arc extinguishing material 4 will play an arc extinguishing effect on the melt 5-1/5-2 wrapped in the center, and the arc extinguishing material 4 closer to the melt 5-1/5-2 has priority.
  • the arc extinguishing material 4 can only play an arc extinguishing effect near the melt part 5-1/5-2, so according to the arc extinguishing characteristics of the arc extinguishing material, the arc extinguishing material can be divided into two parts, and the melt 5- 1/5-2 maximizes the arc extinguishing effect of the arc extinguishing material 4, and the increase in the contact area between the melt 5-1/5-2 and the arc extinguishing material 4 also plays a very critical role in arc extinguishing.
  • a protection element especially a miniature protection element, includes solder 1, insulating tube 2, electrode 3, arc extinguishing material 4, and internal melt 5-1-5-2/5-3 /5-4.
  • the insulating tube 2 is tubular with a square or circular shape, and the internal grid 6 forms four independent accommodating cavities, and each accommodating cavity is provided with a melt.
  • Electrode 3 is a matching conductive metal cap sleeved on it, which is set at both ends of the insulating tube 2, and the two ends of the internal melt 5-1/5-2/5-3/5-4 are fixed to the two end electrodes by soldering 1 3 is in the middle and is electrically connected to the electrodes 3 at both ends, and the internal melt 5-1/5-2/5-3/5-4 is arranged in the arc extinguishing material 4.
  • the breaking current arrives, the internal melt 5-1/5-2/5-3/5-4 respectively bears part of the breaking current.
  • the breaking condition is 250V50A.
  • the fuse becomes The 4 melts respectively bear the breaking conditions of 250V12.5A.
  • the breaking capacity of 250V12.5A is easier to achieve than the breaking capacity of 250V50A.
  • the grid 6 of the internal containment cavity of the insulating tube 2 can effectively isolate each melt from breaking It can avoid the mutual influence of 4 melts 5-1/5-2/5-3/5-4 in the production and product application, so as to realize the breaking requirements of the fuse.
  • the arc extinguishing material 4 plays the role of arc extinguishing, so as to improve the breaking capacity.
  • the arc extinguishing material 4 extinguishes the arc, it will extinguish the arc of the melt wrapped in the center of 5-1/5-2/5-3/5-4, which is away from the melt 5-1/5-2/5 -3/5-4 is closer to the arc extinguishing material 4, so the arc extinguishing material 4 can only play the role of arc extinguishing when it is close to the melt part 5-1/5-2/5-3/5-4.
  • the arc extinguishing material can be divided into 4 parts, and the melt 5-1/5-2/5-3/5-4 are respectively wrapped to maximize the 4 arc extinguishing effect of the arc extinguishing material.
  • the increase in the contact area between the melt 5-1/5-2/5-3/5-4 and the arc extinguishing material 4 also plays a very critical role in arc extinguishing.
  • a protection element especially a miniature protection element, includes solder 1, an insulating tube 2, an electrode 3, an arc extinguishing material 4, and an internal melt 5-1/5-2/5-3 , There are two grids 6 inside the insulating tube, and the two grids do not cross each other.
  • the insulating tube 2 is tubular and has a square or circular shape. There are two plate-shaped grids 6 inside to form three independent accommodating cavities, and each accommodating cavity is provided with a corresponding melt.
  • the electrode 3 is a matching conductive metal cap sleeved on it, which is set at the two ends of the insulating tube 2.
  • the two ends of the internal melt 5-1/5-2/5-3 are fixed in the middle of the electrodes 3 at both ends by soldering 1
  • the electrodes 3 at both ends are electrically connected, and the inner melt 5-1/5-2/5-3/ is arranged in the arc extinguishing material 4.
  • the breaking condition is 250V50A.
  • the breaking condition of 250V16.7A is easier to realize than the breaking capacity of 250V50A.
  • the grid 6 of the internal containment cavity of the insulating tube 2 can effectively isolate the arcing when each fuse is broken.
  • the mutual influence of 3 melts 5-1/5-2/5-3 can be avoided, so as to realize the breaking requirements of the fuse, in the 3 melts 5-1/5-2/5 -3
  • the arc extinguishing material 4 plays the role of arc extinguishing, so as to improve the breaking capacity.
  • the arc extinguishing material 4 extinguishes the arc, it will extinguish the arc of the melt 5-1/5-2/5-3 wrapped in the center, which is closer to the melt 5-1/5-2/5-3
  • the arc extinguishing material 4 has priority, so the arc extinguishing material 4 can only play an arc extinguishing effect when it is close to the melt part 5-1/5-2/5-3.
  • the arc extinguishing material can be extinguished according to the arc extinguishing characteristics of the arc extinguishing material.
  • the material is divided into 3 parts, and the melt 5-1/5-2/5-3 are respectively wrapped to maximize the arc extinguishing effect of the arc extinguishing material 4.
  • the melt 5-1/5-2/5-3 and the arc extinguishing The increase in the contact area of material 4 also plays a very critical role in arc extinguishing.
  • a protection element especially a miniature protection element, includes solder 1, insulating tube 2, electrode 3, arc extinguishing material 4, double melt 5-1-5-2, and inside the insulating tube There is a grille 6.
  • the insulating tube 2 is tubular, with a square or circular shape, and has a plate-shaped grid 6 inside and forms two independent containing chambers, each containing a melt.
  • the electrode 3 is a matching conductive metal cap sleeved on it, which is set at the two ends of the insulating tube 2.
  • the two ends of the double melt 5-1/5-2 are fixed in the middle of the two ends of the electrode 3 by solder 1 and are connected to the two ends of the electrode 3
  • the double melt 5-1/5-2 is arranged in the arc extinguishing material 4, and the double melt is a sheet-like flat wire structure.
  • the sheet-like flat wire structure can increase the contact area between the melt and the arc extinguishing material, thereby increasing the contact area between the arc drawing and the arc extinguishing material during arc drawing, improves the arc extinguishing efficiency and improves the breaking capacity.
  • the breaking condition is 250V50A.
  • the fuse becomes two melts and bears 250V25A respectively. Breaking conditions. Under the same conditions, the breaking capacity of 250V25A is easier to achieve than the breaking capacity of 250V50A.
  • the grid 6 in the housing cavity of the insulating tube 2 can effectively isolate the arc drawn when each melt is broken and be used in production and product applications. It can avoid the mutual influence of the two melts 5-1/5-2, so as to achieve the breaking requirements of the fuse.
  • the arc extinguishing material 4 plays the role of arc extinguishing.
  • the arc extinguishing material 4 When the arc extinguishing material 4 extinguishes the arc, the arc extinguishing material 4 will play an arc extinguishing effect on the melt 5-1/5-2 wrapped in the center, and the arc extinguishing material 4 closer to the melt 5-1/5-2 has priority. Therefore, the arc extinguishing material 4 can only play an arc extinguishing effect near the melt part 5-1/5-2, so according to the arc extinguishing characteristics of the arc extinguishing material, the arc extinguishing material can be divided into two parts, and the melt 5- 1/5-2 maximizes the arc extinguishing effect of the arc extinguishing material 4.
  • a protection element especially a miniature protection element, including solder 1, insulating tube 2, electrode 3, arc extinguishing material 4, several melts 5, and several grids inside the insulating tube 2 6.
  • the insulating tube 2 is tubular with a square or round shape.
  • the grid 6 is formed by staggering a plurality of horizontal plates and a plurality of vertical plates, and the cross section of the grid 6 is a plurality of "well" shapes, so that the cross section of the insulating tube 2 is a honeycomb shape.
  • the two ends of the grid 6 are respectively connected to the electrodes at the two ends of the insulating tube.
  • the grid 6 divides the insulating tube into a plurality of accommodating cavities that are not connected to each other, and a melt 5 is provided in each accommodating cavity.
  • the electrode 3 is a matching conductive metal cap sleeved on it, which is set at both ends of the insulating tube 2.
  • the two ends of a number of melts 5 are fixed between the electrodes at both ends by soldering and are electrically connected to the electrodes at both ends, and a number of melts 5 are wrapped In the arc extinguishing material 4, at the same time, several melts 5 can be round, square, flat wire and wire wound structure.
  • the internal grid 6 of the insulating tube can be made of any insulating material, and can be made together with the insulating tube 2, or can be made separately and put into the insulating tube.

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Abstract

一种绝缘管（2）内部加格栅（6）的保护元件，包括绝缘管（2）、位于绝缘管（2）中的熔体（5-1，5-2），于绝缘管（2）中间增加格栅（6）把绝缘管（2）内部分隔成若干独立的收容腔，每个收容腔内均设有一个熔体（5-1，5-2），从而在分断过程中通过2个以上熔体（5-1，5-2）进行分流，每个熔体（5-1，5-2）分别承担部分分断电流，从而通过降低分断电流的方式提高分断能力。灭弧材料（4）分别包裹熔体（5-1，5-2），最大限度地提高灭弧材料（4）灭弧作用。

Description

一种绝缘管内部加格栅的保护元件 技术领域
本发明涉及电路保护装置的技术领域，具体是涉及一种具有熔断功能的保护元件。
背景技术
目前微型保护元件都是绝缘管状结构，而随着科技的发展及日常生活的需要，微型保护元件不仅仅需要微型化设计，还需要高分断能力。
如图1所示，为现有技术中的一种保护元件，包括绝缘管2’、位于绝缘管两端的端帽3’、与两端的端帽通过焊锡1’焊接的熔体5’，其中绝缘管内填充包裹住熔体的灭弧材料4’。如图1中的该保护元件的技术方案，目前市面上微型保护元件的分断都采用灌装灭弧材料来实现，难以进一步提高保护元件的分断能力。
发明内容
发明目的：本发明的目的是提供一种新型的保护元件，能够提高保护元件的分断能力。
技术方案：为实现上述目的，本发明可采用以下技术方案：
一种绝缘管内部加格栅的保护元件，包括绝缘管、位于绝缘管两端的端帽，所述绝缘管内设有至少一个格栅，该格栅将绝缘管内至少隔为两个相互独立的收容腔，每个收容腔内均设有一个熔体，且每个收容腔内的熔体均与绝缘管两端的端帽连接；每个收容腔中均填充有灭弧材料。
进一步的，所述格栅为平板状，且该格栅的两端分别与绝缘管两端的端帽连接，格栅将绝缘管内隔为至少两个互不连通的收容腔，每个收容腔内均设有一个熔体。
进一步的，所述格栅的横截面为“十”字形，且该格栅的两端分别与绝缘管两端的端帽连接，格栅将绝缘管内隔为四个互不连通的收容腔，每个收容腔内均设有一个熔体。
进一步的，所述格栅为多个横板及多个竖板交错形成，且格栅的横截面为多个“井”字形，且该格栅的两端分别与绝缘管两端的端帽连接，格栅将绝缘管内 隔为若干互不连通的收容腔，每个收容腔内均设有一个熔体。
进一步的，所述熔体为片状的扁丝结构，增加熔体与灭弧材料的接触面积从而在拉弧时增加拉弧与灭弧材料的接触面积，提高灭弧效率、提高分断能力。
有益效果：本发明中，增加格栅把绝缘管内部分成若干独立的收容腔，而熔体与绝缘管的收容腔相对应分成若干部分(最少2个熔体)，从而在分断过程中通过2个以上熔体进行分流，每个熔体分别承担部分分断电流，从而通过降低分断电流的方式提高分断能力。灭弧材料灭弧时会对包裹在中心的熔体拉弧起到灭弧作用，离熔体较近灭弧材料优先起作用，因此灭弧材料只有靠近熔体部分才可以起到灭弧作用，故根据灭弧材料的灭弧特性可以把灭弧材料分成若干部分，分别包裹熔体最大限度的提高灭弧材料灭弧作用。
为实现上述目的，本发明提供还可采用以下技术方案：
一种保护元件，包括绝缘管、位于绝缘管两端的端帽，所述绝缘管内设有至少两个相互独立的收容腔，每个收容腔内均设有熔体，且每个收容腔内的熔体均与绝缘管两端的端帽连接；每个收容腔中均填充有灭弧材料。
进一步的，绝缘管内设有四个相互独立的收容腔。
进一步的，所述绝缘管内设有若干个相互独立的收容腔，且该绝缘管横截面为蜂窝状。
进一步的，所述绝缘管内设有格栅，所述相互独立的收容腔之间设置该格栅且被该格栅隔离。
进一步的，所述熔体为片状的扁丝结构，增加熔体与灭弧材料的接触面积从而在拉弧时增加拉弧与灭弧材料的接触面积，提高灭弧效率、提高分断能力。
有益效果：本发明中，绝缘管内部分成若干个收容腔，而熔体与绝缘管的收容腔相对应分成若干部分(最少2个熔体)，从而在分断过程中通过2个以上熔体进行分流，每个熔体分别承担部分分断电流，从而通过降低分断电流的方式提高分断能力。灭弧材料灭弧时会对包裹在中心的熔体拉弧起到灭弧作用，离熔体较近灭弧材料优先起作用，因此灭弧材料只有靠近熔体部分才可以起到灭弧作用，故根据灭弧材料的灭弧特性可以把灭弧材料分成若干部分，分别包裹熔体最大限度的提高灭弧材料灭弧作用。
附图说明
图1是现有技术中的微型保护元件的剖面结构示意图；
图2是本发明实施例一的保护元件纵向剖面示意图；
图3是本发明实施例一的保护元件横向剖面示意图；
图4是本发明实施例二的保护元件纵向剖面示意图；
图5是本发明实施例二的保护元件横向剖面示意图；
图6是本发明实施例三的保护元件纵向剖面示意图；
图7是本发明实施例三的保护元件横向剖面示意图；
图8是本发明实施例四的保护元件纵向剖面示意图；
图9是本发明实施例四的保护元件横向剖面示意图；
图10是本发明实施例五的保护元件纵向剖面示意图；
图11是本发明实施例五的保护元件横向剖面示意图。
具体实施方式
下面将结合本发明实施例，对本发明实施例中技术方案进行完整、清楚地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动下所获得的所有其它实施例，都属于本发明保护的范围。
实施例一
如图2及图3所示，本实施例中的保护元件，尤其是一种微型保护元件，包含焊锡1、绝缘管2、电极3、灭弧材料4、双熔体5-1/5-2、绝缘管内部有一道板状的格栅6。绝缘管中格栅6可以是陶瓷材料、也可以是PCB等绝缘材料；可以和绝缘管2一起制作成型，也可以单独制作成型后放入绝缘管中。绝缘管2为管状，外形为方型或圆形，内部有格栅6及形成的收容腔；电极3为套置其上的匹配导电金属帽，设置在绝缘管2两端，双熔体5-1/5-2的两端通过焊锡1固定在两端电极3中间并与两端电极3形成电连接，双熔体5-1/5-2设置在灭弧材料4的内。
当分断电流到达时，两根熔体5-1/5-2分别承受部分分断电流，如分断条件为250V50A，根据并联电路分流原理，在此熔断器上就变为两根熔体分别承担250V25A分断条件，在同等条件下250V25A的分断能力比250V50A的分断能力更容易实现，利用绝缘管2内部收容腔的格栅6可以有效地隔绝各个熔体分断时 的拉弧并在生产和产品应用中可以避免2根熔体5-1/5-2的相互影响，从而实现熔断器的分断要求，在两根熔体5-1/5-2熔断时，灭弧材料4起到灭弧作用，从而实现提高分断能力的。灭弧材料4灭弧时会对包裹在中心的熔体5-1/5-2拉弧起到灭弧作用，离熔体5-1/5-2较近灭弧材料4优先起作用，因此灭弧材料4只有靠近熔体部分5-1/5-2才可以起到灭弧作用，故根据灭弧材料的灭弧特性可以把灭弧材料分成2个部分，分别包裹熔体5-1/5-2最大限度的提高灭弧材料4灭弧作用，同时熔体5-1/5-2与灭弧材料4的接触面积增加对灭弧也起到非常关键的作用。
实施例二
如图4及图5所示，一种保护元件，尤其是微型保护元件，包含焊锡1、绝缘管2、电极3、灭弧材料4、内部熔体5-1/5-2/5-3/5-4、绝缘管内部两道格栅6，两格栅相互交叉，横截面为“十”字形。绝缘管2为管状，外形为方型或圆形，内部的格栅6形成四个独立的收容腔，每个收容腔内均设有一个熔体。电极3为套置其上的匹配导电金属帽，设置在绝缘管2两端，内部熔体5-1/5-2/5-3/5-4的两端通过焊锡1固定在两端电极3中间并与两端电极3形成电连接，内部熔体5-1/5-2/5-3/5-4设置在灭弧材料4的内。
进一步的。当分断电流到达时，内部熔体5-1/5-2/5-3/5-4分别承受部分分断电流，如分断条件为250V50A，根据并联电路分流原理，在此熔断器上就变为4根熔体分别承担250V12.5A分断条件，在同等条件下250V12.5A的分断能力比250V50A的分断能力更容易实现，利用绝缘管2内部收容腔的格栅6可以有效地隔绝各个熔体分断时的拉弧并在生产和产品应用中可以避免4根熔体5-1/5-2/5-3/5-4的相互影响，从而实现熔断器的分断要求，在4根熔体5-1/5-2/5-3/5-4熔断时，灭弧材料4起到灭弧作用，从而实现提高分断能力的。灭弧材料4灭弧时会对包裹在中心的熔体5-1/5-2/5-3/5-4拉弧起到灭弧作用，离熔体5-1/5-2/5-3/5-4较近灭弧材料4优先起作用，因此灭弧材料4只有靠近熔体部分5-1/5-2/5-3/5-4才可以起到灭弧作用，故根据灭弧材料的灭弧特性可以把灭弧材料分成4个部分，分别包裹熔体5-1/5-2/5-3/5-4最大限度的提高灭弧材料4灭弧作用，同时熔体5-1/5-2/5-3/5-4与灭弧材料4的接触面积增加对灭弧也起到 非常关键的作用。
实施例三
如图6及图7所示，一种保护元件，尤其是微型保护元件，包含焊锡1、绝缘管2、电极3、灭弧材料4、内部熔体5-1/5-2/5-3、绝缘管内部两道格栅6，两格栅相互不交叉。绝缘管2为管状，外形为方型或圆形，内部有两道板状格栅6形成三个独立的收容腔，每个收容腔内对应设置一个熔体。电极3为套置其上的匹配导电金属帽，设置在绝缘管2两端，内部熔体5-1/5-2/5-3的两端通过焊锡1固定在两端电极3中间并与两端电极3形成电连接，内部熔体5-1/5-2/5-3/设置在灭弧材料4的内。
当分断电流到达时，内部熔体5-1/5-2/5-3分别承受部分分断电流，如分断条件为250V50A，根据并联电路分流原理，在此熔断器上就变为3根熔体分别承担250V16.7A分断条件，在同等条件下250V16.7A的分断能力比250V50A的分断能力更容易实现，利用绝缘管2内部收容腔的格栅6可以有效地隔绝各个熔体分断时的拉弧并在生产和产品应用中可以避免3根熔体5-1/5-2/5-3的相互影响，从而实现熔断器的分断要求，在3根熔体5-1/5-2/5-3熔断时，灭弧材料4起到灭弧作用，从而实现提高分断能力的。灭弧材料4灭弧时会对包裹在中心的熔体5-1/5-2/5-3拉弧起到灭弧作用，离熔体5-1/5-2/5-3较近灭弧材料4优先起作用，因此灭弧材料4只有靠近熔体部分5-1/5-2/5-3才可以起到灭弧作用，故根据灭弧材料的灭弧特性可以把灭弧材料分成3个部分，分别包裹熔体5-1/5-2/5-3最大限度的提高灭弧材料4灭弧作用，同时熔体5-1/5-2/5-3与灭弧材料4的接触面积增加对灭弧也起到非常关键的作用。
实施例四
如图8及图9所示，一种保护元件，尤其是微型保护元件，包含焊锡1、绝缘管2、电极3、灭弧材料4、双熔体5-1/5-2、绝缘管内部有一道格栅6。绝缘管2为管状，外形为方型或圆形，内部有一个板状的格栅6并形成两个独立的收容腔，每个收容腔内均设有一个熔体。电极3为套置其上的匹配导电金属帽，设置在绝缘管2两端，双熔体5-1/5-2的两端通过焊锡1固定在两端电极3中间并 与两端电极3形成电连接，双熔体5-1/5-2设置在灭弧材料4的内，同时双熔体为片状的扁丝结构。该片状的扁丝结构能够增加熔体与灭弧材料的接触面积从而在拉弧时增加拉弧与灭弧材料的接触面积，提高灭弧效率、提高分断能力。
当分断电流到达时，两根熔体5-1/5-2分别承受部分分断电流，如分断条件为250V50A，根据并联电路分流原理，在此熔断器上就变为两根熔体分别承担250V25A分断条件，在同等条件下250V25A的分断能力比250V50A的分断能力更容易实现，利用绝缘管2内部收容腔的格栅6可以有效地隔绝各个熔体分断时的拉弧并在生产和产品应用中可以避免2根熔体5-1/5-2的相互影响，从而实现熔断器的分断要求，在两根熔体5-1/5-2熔断时，灭弧材料4起到灭弧作用，从而实现提高分断能力的。灭弧材料4灭弧时会对包裹在中心的熔体5-1/5-2拉弧起到灭弧作用，离熔体5-1/5-2较近灭弧材料4优先起作用，因此灭弧材料4只有靠近熔体部分5-1/5-2才可以起到灭弧作用，故根据灭弧材料的灭弧特性可以把灭弧材料分成2个部分，分别包裹熔体5-1/5-2最大限度的提高灭弧材料4灭弧作用，同时由于熔体5-1/5-2为扁丝结构与灭弧材料4的接触面积增加很多，拉弧后与灭弧灭弧材料接触面增加因而灭弧材料可以更好的起灭弧作用。
实施例五
如图10及图11所示：一种保护元件，尤其是微型保护元件，包含焊锡1、绝缘管2、电极3、灭弧材料4、若干个熔体5、绝缘管2内部若干道格栅6。绝缘管2为管状，外形为方型或圆形。格栅6为多个横板及多个竖板交错形成，且格栅6的横截面为多个“井”字形，使得该绝缘管2横截面为蜂窝状。且该格栅6的两端分别与绝缘管两端的电极连接。格栅6将绝缘管内隔为若干互不连通的收容腔，每个收容腔内均设有一个熔体5。电极3为套置其上的匹配导电金属帽，设置在绝缘管2两端，若干熔体5的两端通过焊锡固定在两端电极中间并与两端电极形成电连接，若干熔体5包裹在灭弧材料4中，同时若干熔体5可以是圆形、方形、扁丝以及绕丝结构。其中绝缘管内部格栅6可以是任何绝缘材料制作，可以和绝缘管2一起制作、也可以单独制作后放入绝缘管内部。

Claims (10)

  1. 一种绝缘管内部加格栅的保护元件，包括绝缘管、位于绝缘管两端的端帽，其特征在于，所述绝缘管内设有至少一个格栅，该格栅将绝缘管内至少隔为两个相互独立的收容腔，每个收容腔内均设有一个熔体，且每个收容腔内的熔体均与绝缘管两端的端帽连接；每个收容腔中均填充有灭弧材料。
  2. 根据权利要求1所述的保护元件，其特征在于，所述格栅为平板状，且该格栅的两端分别与绝缘管两端的端帽连接，格栅将绝缘管内隔为至少两个互不连通的收容腔，每个收容腔内均设有一个熔体。
  3. 根据权利要求1所述的保护元件，其特征在于，所述格栅的横截面为“十”字形，且该格栅的两端分别与绝缘管两端的端帽连接，格栅将绝缘管内隔为四个互不连通的收容腔，每个收容腔内均设有一个熔体。
  4. 根据权利要1所述的保护元件，其特征在于，所述格栅为多个横板及多个竖板交错形成，且格栅的横截面为多个“井”字形，且该格栅的两端分别与绝缘管两端的端帽连接，格栅将绝缘管内隔为若干互不连通的收容腔，每个收容腔内均设有一个熔体。
  5. 根据权利要1至4中任一项所述的保护元件，其特征在于，所述熔体为片状的扁丝结构。
  6. 一种保护元件，包括绝缘管、位于绝缘管两端的端帽，其特征在于，所述绝缘管内设有至少两个相互独立的收容腔，每个收容腔内均设有熔体，且每个收容腔内的熔体均与绝缘管两端的端帽连接；每个收容腔中均填充有灭弧材料。
  7. 根据权利要求6所述的保护元件，其特征在于，绝缘管内设有四个相互独立的收容腔。
  8. 根据权利要求6所述的保护元件，其特征在于，所述绝缘管内设有若干个相互独立的收容腔，且该绝缘管横截面为蜂窝状。
  9. 根据权利要6或7或8所述的保护元件，其特征在于，所述绝缘管内设有格栅，所述相互独立的收容腔之间设置该格栅且被该格栅隔离。
  10. 根据权利要9所述的保护元件，其特征在于，所述熔体为片状的扁丝结构。
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