CN112951679B - Middle-high voltage is oversheath for fuse - Google Patents
Middle-high voltage is oversheath for fuse Download PDFInfo
- Publication number
- CN112951679B CN112951679B CN202110313918.1A CN202110313918A CN112951679B CN 112951679 B CN112951679 B CN 112951679B CN 202110313918 A CN202110313918 A CN 202110313918A CN 112951679 B CN112951679 B CN 112951679B
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- CN
- China
- Prior art keywords
- fuse
- outer sheath
- main frame
- sheath main
- high voltage
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- Legal status (The legal status 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 status listed.)
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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
- H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
- H01H85/0017—Means for preventing damage, e.g. by ambient influences to the fuse due to vibration or other mechanical forces, e.g. centrifugal forces
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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
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
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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
- H01H85/47—Means for cooling
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- Fuses (AREA)
Abstract
The application discloses well oversheath for high voltage fuse includes: an outer sheath main frame; the outer sheath main frame is used for being sleeved on the fuse; the oversheath body frame is the metal material, and the surface is provided with a plurality of logical chambeies. According to the damping device, the plurality of through cavities are formed in the outer sheath main frame and are made of metal materials, so that after the fuse is sleeved on the outer sheath main frame, the inherent frequency of the fuse can be changed, the damping effect is realized, and the phenomenon of serious fuse fatigue is avoided; the shell heat dissipation efficiency of the fuse can be improved, the heat accumulation inside the fusion tube is reduced, and the service life of the medium-high voltage fuse can be effectively prolonged. The problem that a fuse wire is easy to break in the using process of the existing medium-high voltage fuse is effectively solved.
Description
Technical Field
The application relates to the technical field of fuse protection, in particular to an outer sheath for a medium-high voltage fuse.
Background
The fuse is widely applied to electrical equipment such as high-low voltage distribution systems, control systems and the like, is connected with a protected circuit in series, and plays a role in short circuit and overcurrent protection. Fuses are widely used worldwide as a conventional circuit protection device. Currently, manufacturers and research units in all countries around the world are constantly striving to improve the performance of fuses. In order to improve the working reliability and the service life of the fuse, measures such as shock absorption and accelerated heat dissipation are necessary.
Particularly, in the case of a medium-high voltage fuse, the length of the fuse is long, and during shock and vibration, a resonance phenomenon occurs more easily when the vibration frequency is close to the natural frequency of the fuse, resulting in fatigue rupture of the fuse. The existing solution mainly depends on the performance improvement of the fuse manufacturer to the product, but the effect is limited.
Disclosure of Invention
In view of this, the present application provides an outer sheath for a medium-high voltage fuse, which is used to solve the problem that a fuse is easily broken in the use process of the existing medium-high voltage fuse.
In order to achieve the above technical object, the present application provides an outer sheath for a medium-high voltage fuse, including: an outer sheath main frame;
the outer sheath main frame is used for being sleeved on the fuse;
the oversheath body frame is the metal material, and the surface is provided with a plurality of logical chambeies.
Preferably, the outer sheath main frame is cylindrical;
the through cavity penetrates through the inner wall and the outer wall of the outer sheath main frame.
Preferably, the plurality of through cavities are uniformly distributed at intervals along the axial direction of the outer sheath main frame and uniformly distributed around the radial circumference of the outer sheath main frame.
Preferably, the outer sheath main frame consists of a plurality of circular ring pieces and a plurality of rod pieces;
the plurality of rod pieces are uniformly distributed around the circumference of the circular ring piece;
the plurality of circular ring pieces are uniformly distributed at intervals along the length direction of the rod piece;
the through cavity is formed between every two adjacent rod pieces and every two adjacent circular ring pieces.
Preferably, the number of the rods is two.
Preferably, the outer sheath main frame is made of foamed aluminum.
Preferably, the outer sheath main frame is sleeved at the middle position of the fuse.
It can be seen from above technical scheme that this application provides a well oversheath for high voltage fuse, includes: an outer sheath main frame; the outer sheath main frame is used for being sleeved on the fuse; the oversheath body frame is the metal material, and the surface is provided with a plurality of logical chambeies. According to the damping device, the plurality of through cavities are formed in the outer sheath main frame and are made of metal materials, so that after the fuse is sleeved on the outer sheath main frame, the inherent frequency of the fuse can be changed, the damping effect is realized, and the phenomenon of serious fuse fatigue is avoided; the shell heat dissipation efficiency of the fuse can be improved, the heat accumulation inside the fusion tube is reduced, and the service life of the medium-high voltage fuse can be effectively prolonged. The problem that a fuse wire is easy to break in the using process of the existing medium-high voltage fuse is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic view of a medium-high voltage fuse sleeved on a fuse by an outer sheath according to an embodiment of the present disclosure;
fig. 2 is an overall structural view of an outer sheath for a medium-high voltage fuse according to an embodiment of the present disclosure;
FIG. 3 is an axial cross-sectional view of an outer sheath for a medium-high voltage fuse according to an embodiment of the present disclosure;
in the figure: 1. an outer sheath main frame; 11. a circular ring member 12, a rod member; 2. a fuse; 3. and a connecting end.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the embodiments of the present application, belong to the scope of protection claimed in the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application discloses an outer sheath for a medium-high voltage fuse.
Referring to fig. 1, an outer sheath for a medium-high voltage fuse provided in an embodiment of the present application includes: an outer sheath main frame 1; the outer sheath main frame 1 is used for being sleeved on the fuse 2; the oversheath body frame 1 is the metal material, and the surface is provided with a plurality of logical chambeies.
Particularly, the existing fuse is mostly made of quartz sand, heat generated in work engineering is mainly transferred to a closed shell by the quartz sand, and then the shell dissipates heat to air, so that the whole heat dissipation process is slow. Meanwhile, in the process, heat energy can be accumulated in the fuse cavity along with the time, and the service life of the fuse is further influenced. This scheme is through setting up oversheath body frame 1 of metal material, cup joints back on fuse 2, can effectually provide the shell heat transfer radiating efficiency of fuse, has reduced the inside heat accumulation of fusion tube, can effectively prolong high voltage fuse's life.
Meanwhile, in the existing fuse, particularly for a medium-high voltage fuse, the length of an internal fuse is long, and a resonance phenomenon is easy to occur in overshoot of impact and vibration, so that the risk of fatigue fracture of the fuse is caused. In the scheme, the outer sheath main frame 1 is sleeved on the fuse 2, so that the natural frequency of a medium-high voltage fuse can be changed, the damping effect is realized, and the technical effect of serious fuse fatigue is avoided; furthermore, a plurality of logical chambeies on the cooperation oversheath body frame 1, the natural frequency that cooperation oversheath body frame 1 can further change the fuse reduces the risk that takes place resonance phenomenon.
The above is the first embodiment provided in the present application, and the following is the second embodiment provided in the present application, please refer to fig. 1 to 3 specifically.
An outer sheath for a medium and high voltage fuse, comprising: an outer sheath main frame 1; the outer sheath main frame 1 is used for being sleeved on the fuse 2; the oversheath body frame 1 is the metal material, and the surface is provided with a plurality of logical chambeies.
Further, the outer sheath main frame 1 is cylindrical; the through cavity is communicated with the inner wall and the outer wall of the outer sheath main frame.
Specifically, most of the existing fuses are cylindrical, and the outer sheath main frame 1 is in a shape matched with the fuses; in the present embodiment, the outer jacket main frame 1 is cylindrical. The cavity link up the inside and the outer wall of oversheath body frame 1, when changing natural frequency, also plays the effect of the air current of circulation oversheath body frame 1 inside and outside wall, avoids steam to accumulate between outer sheath body frame 1 and fuse.
Further, a plurality of through cavities are uniformly distributed at intervals along the axial direction of the outer sheath main frame 1 and are uniformly distributed around the radial circumference of the outer sheath main frame.
Specifically, the notification is regularly distributed on the outer jacket main frame 1.
Further, the outer sheath main frame 1 is composed of a plurality of ring pieces 11 and a plurality of rod pieces 12; a plurality of rod pieces 12 are uniformly distributed around the circumference of the circular ring piece 11; a plurality of circular ring members 11 are uniformly distributed at intervals along the length direction of the rod member 12; the through cavities are formed between two adjacent rod pieces 12 and two adjacent circular ring pieces 11.
Specifically, the through cavity is surrounded by the annular member 11 and the rod member 12. And the ring members 11 and the rod members 12 are regularly distributed.
Further, the rod 12 specifically includes two.
Specifically, in the present embodiment, two rod members 12 are symmetrically distributed around the center of the circular ring member 11; other numbers are possible in practical application and are not limiting.
Further, the outer sheath main frame 1 is made of foamed aluminum.
Specifically, referring to fig. 3, the foamed aluminum is in a porous foam shape, has good fire resistance and flame retardance, and can effectively reduce the damage of the fuse caused by an explosion accident after being sleeved on the fuse 2.
Meanwhile, parameter indexes such as the main aperture, the porosity and the relative density of the foamed aluminum can be adjusted, and the shape of the outer sheath main frame 1 can be changed, so that the outer sheath can be used for supporting and protecting high-voltage fuse products in different types.
Further, the outer sheath main frame 1 is sleeved on the middle position of the fuse.
Specifically, referring to fig. 1, the outer sheath main frame 1 is sleeved at the middle position of the fuse 2, and two ends of the fuse 2 play a role in limiting the outer sheath main frame 1 through the connecting end 3.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (5)
1. An oversheath for medium and high voltage fuses, characterized by comprising: an outer sheath main frame;
the outer sheath main frame is used for being sleeved on the fuse;
the outer sheath main frame is made of foamed aluminum, and a plurality of through cavities are formed in the surface of the outer sheath main frame;
the outer sheath main frame consists of a plurality of circular ring pieces and a plurality of rod pieces;
the plurality of rod pieces are uniformly distributed around the circumference of the circular ring piece;
the plurality of circular ring pieces are uniformly distributed at intervals along the length direction of the rod piece;
the through cavity is formed between every two adjacent rod pieces and every two adjacent circular ring pieces.
2. The outer sheath for the medium-high voltage fuse as recited in claim 1, wherein the outer sheath main frame is cylindrical;
the through cavity penetrates through the inner wall and the outer wall of the outer sheath main frame.
3. The outer sheath for the middle-high voltage fuse as recited in claim 2, wherein the plurality of through cavities are uniformly spaced along an axial direction of the outer sheath main frame and uniformly distributed around a radial circumference of the outer sheath main frame.
4. The outer sheath for the medium-high voltage fuse as recited in claim 1, wherein the rod member includes two.
5. The outer sheath for the medium-high voltage fuse as recited in claim 1, wherein the outer sheath main frame is sleeved on a middle position of the fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313918.1A CN112951679B (en) | 2021-03-24 | 2021-03-24 | Middle-high voltage is oversheath for fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313918.1A CN112951679B (en) | 2021-03-24 | 2021-03-24 | Middle-high voltage is oversheath for fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112951679A CN112951679A (en) | 2021-06-11 |
| CN112951679B true CN112951679B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110313918.1A Active CN112951679B (en) | 2021-03-24 | 2021-03-24 | Middle-high voltage is oversheath for fuse |
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| CN (1) | CN112951679B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676134A (en) * | 2019-10-11 | 2020-01-10 | 国网青海省电力公司海南供电公司 | Fuse protector |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385281A (en) * | 1981-03-19 | 1983-05-24 | Littelfuse, Inc. | Electrical fuse |
| CN201687096U (en) * | 2010-03-26 | 2010-12-29 | 杭州龙邦合金科技有限公司 | Foam aluminum tube |
| WO2014071998A1 (en) * | 2012-11-12 | 2014-05-15 | Schurter Ag | Fuse holder for an electrical fuse, fuse apparatus and method |
| EP2838104A1 (en) * | 2013-08-12 | 2015-02-18 | Siemens Aktiengesellschaft | Subsea fuse |
| CN107331589A (en) * | 2017-08-22 | 2017-11-07 | 苏州赛硕拉不锈钢制品有限公司 | A kind of heat dissipation type cartridge fuse |
| CN209496803U (en) * | 2018-11-21 | 2019-10-15 | 青岛海尔洗衣机有限公司 | The protective case of cartridge fuse |
| CN210223927U (en) * | 2019-07-26 | 2020-03-31 | 广东三义电子科技有限公司 | Protective sleeve structure for protective tube |
| CN212485269U (en) * | 2020-04-06 | 2021-02-05 | 陈冲 | Industrial high-voltage fuse |
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2021
- 2021-03-24 CN CN202110313918.1A patent/CN112951679B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676134A (en) * | 2019-10-11 | 2020-01-10 | 国网青海省电力公司海南供电公司 | Fuse protector |
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| CN112951679A (en) | 2021-06-11 |
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