CN111986966A - High-voltage current-limiting fuse - Google Patents
High-voltage current-limiting fuse Download PDFInfo
- Publication number
- CN111986966A CN111986966A CN202010812753.8A CN202010812753A CN111986966A CN 111986966 A CN111986966 A CN 111986966A CN 202010812753 A CN202010812753 A CN 202010812753A CN 111986966 A CN111986966 A CN 111986966A
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- Prior art keywords
- fuse
- base
- main body
- voltage
- fuse base
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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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V
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- Fuses (AREA)
Abstract
The invention discloses a high-voltage current-limiting fuse.A fuse base part is a main body supporting structure and comprises a main body fuse base, a fuse base contact, a primary wiring terminal, a voltage-dividing capacitor and a secondary wiring terminal; the fuse part mainly comprises a fuse, and the fuse is fixed on a grounded metal mounting plate by utilizing an embedded nut of a main body fuse base; the controller is an electronic circuit and can be arranged in an instrument room or a panel in an embedded or fixed installation mode; the input end of the secondary wiring terminal is connected to the main body fuse base through a wire, and the signal converted by the controller is connected to the output terminal in a dry contact mode to output a fuse electrified state and a fuse fusing signal. The invention accurately judges the fuse state of the high-voltage fuse by changing the structure of the fuse base and using the voltage dividing capacitor to retrieve the voltages at two ends of the fuse, thereby solving the difficulty that the specific fault information can not be obtained when the high-voltage transformer fails.
Description
The technical field is as follows:
the invention relates to the technical field of 3-35kV electrical equipment, in particular to a high-voltage fuse for protecting a high-voltage electromagnetic voltage transformer.
Background art:
in order to meet the voltage measurement, sampling and metering requirements of a high-voltage power grid, an electromagnetic voltage transformer is generally adopted, and an alternating-current high-voltage current-limiting fuse is generally adopted as primary protection equipment. The fuse and the components thereof comprise a terminal, a fuse base contact, a fuse element contact, a fuse body and other parts. The fuse fixing base can be eliminated according to the condition in the application.
The fuse has a simple structure, and is widely applied as a low-cost protective device with reliable breaking capacity. However, with the development of the power supply and distribution technology of the power grid, the development of the smart power grid and the primary and secondary fusion technology, higher requirements are also put forward on power equipment, and how to detect whether a fuse wire of a fuse is fused on line and upload the fused fuse wire becomes the direction of improvement of the high-voltage fuse.
Disclosure of Invention
The invention provides a fuse protector solution which can detect and upload the state of the fuse protector on line aiming at the problems.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a high voltage current limiting fuse comprising a fuse base part (1) and a fuse part (2), a controller (3) for converting an output signal;
the fuse base component (1) is a main body supporting structure and comprises a main body fuse base (11), a fuse base contact (12), a primary wiring terminal (13), a voltage division capacitor (14) and a secondary wiring terminal (15);
the fuse protector comprises a main body fuse base (11), primary wiring terminals (13) arranged at two ends of the main body fuse base (11) and used for connecting a high-voltage side and a load side, fuse base contacts (12) arranged together with the primary wiring terminals (13) and used for fixing and connecting contacts of a fuse element, a voltage-dividing capacitor (14) arranged in the main body fuse base (11), one end of the voltage-dividing capacitor connected with embedded nuts which are poured in the base and used for fixing the primary wiring terminals through wires, and the other end of the voltage-dividing capacitor connected to a secondary wiring terminal (15);
the fuse part component (2) mainly comprises a fuse part (21), and the fuse is fixed on a grounded metal mounting plate by utilizing an embedded nut of a main body fuse base (11);
the controller is an electronic circuit and can be arranged in an instrument room or a panel in an embedded or fixed installation mode; the input end of the controller is connected to a secondary wiring terminal (15) of a main body fuse base (11) by adopting a wire, and a signal converted by the controller is connected to an output terminal in a dry contact mode to output a fuse electrified state and a fuse fusing signal.
Has the advantages that: the invention accurately judges the fuse state of the high-voltage fuse by changing the structure of the fuse base and using the voltage dividing capacitor to retrieve the voltages at two ends of the fuse, and can output a signal of fuse fusing for a monitoring system to use when the fuse is fused and the high-voltage side is electrified, thereby solving the difficulty that specific fault information cannot be obtained when the high-voltage transformer fails.
Description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a fixed fuse assembly diagram;
FIG. 2 is a cross-sectional view of a fixed fuse;
FIG. 3 is a close type fuse assembly diagram;
FIG. 4 is a cross-sectional view of a close-type fuse;
FIG. 5 is a drawing of a withdrawable-insertable fuse assembly;
FIG. 6 is a cross-sectional view of a withdrawable-insertable fuse;
in the figure, 1 is a fuse base part, 2 is a fuse element part, 3 is a controller, and 4 is an insulating operating rod; 11 is a main body fuse base, 12 is a fuse base contact, 13 is a primary wiring terminal, 14 is a voltage division capacitor, and 15 is a secondary wiring terminal; 21 is a fuse, and 22 is a fuse carrier.
The specific implementation structure is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1: 1-2, a high voltage current limiting fuse includes a fuse base member 1 and a fuse element member 2, a controller 3 for converting an output signal;
the fuse base component 1 is a main body supporting structure and comprises a main body fuse base 11, a fuse base contact 12, a primary wiring terminal 13, a voltage division capacitor 14 and a secondary wiring terminal 15;
the two ends of the main body fuse base 11 are provided with a primary wiring terminal 13 for connecting a high-voltage side and a load side, a fuse base contact 12 for fixing and connecting a contact of a fuse element is arranged together with the primary wiring terminal 13, a voltage-dividing capacitor 14 is arranged in the main body fuse base 11, one end of the voltage-dividing capacitor is connected with an embedded nut which is poured in the base and used for fixing the primary wiring terminal through a lead, and the other end of the voltage-dividing capacitor is connected to a secondary wiring terminal 15 through a lead;
the fuse part 2 mainly comprises a fuse 21, and the fuse is fixed on a grounded metal mounting plate by using an embedded nut of a main body fuse base 11;
the controller is an electronic circuit and can be arranged in an instrument room or a panel in an embedded or fixed installation mode; the input end of the secondary wiring terminal is connected to a secondary wiring terminal 15 of the main body fuse base 11 by adopting a wire, and a signal converted by the controller is connected to an output terminal in a dry contact mode to output a fuse electrified state and a fuse fusing signal.
The above-mentioned structure, in the indoor environment, the foul grade is lower, when the installation space is abundant, when the requirement for operation is not high, generally adopt the open type installation way, the invention is not limited to the above-mentioned structure, for example:
example two: closed installation
The fuse holder is mainly used for outdoor environments, has high protection level and is integrated with a voltage transformer, as shown in figures 3-4, in the structure, a fuse part 21 is arranged in a closed cavity and is in interference fit with a fuse carrying part 22, the fuse carrying part 22 is screwed into a screw hole in the top of a fuse holder 11 through external threads, and in order to protect good electrical conduction, a spring is used as a fuse holder contact 12 on the load side at the lower part. In fig. 4, the secondary connection terminal 15 is drawn where it is easy to express, but the secondary connection terminal 15 may be arranged in a secondary chamber of the voltage transformer at the time of actual manufacturing.
Example three: draw-and-insert type installation
The drawing and inserting type installation mode is a semi-open installation mode, and is mainly characterized in that the fuse part component 2 can be drawn out or inserted under the electrified condition, so that the use and maintenance operation are more convenient and safer. The fuse base contact 12 is differentiated into an annular radial spring and is provided with a guiding conical surface so as to facilitate the insertion of the fuse element component 2 from the opening of the fuse base 11 and ensure good electrical contact performance. Adopt special insulating bar 4 to make operating personnel can keep away from high-voltage dangerous environment and take out the operation of inserting to fuse-element part.
The components such as the primary connecting terminal 13, the fuse holder 22, the fuse base contact 12, and the like are not necessarily separate components, and may not be required, and the fuse holder 22 is not shown in fig. 2; in fig. 4, the primary terminal 13 on the power receiving side (upper end) of the fuse, the fuse base contact 12 and the fuse carrier 22 are combined into one part, and the fuse base contact on the power feeding side (lower end) of the fuse base is represented by a spring.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A high-voltage current-limiting fuse, comprising: comprises a fuse base component (1) and a fuse component (2), and a controller (3) for converting an output signal;
the fuse base component (1) is a main body supporting structure and comprises a main body fuse base (11), a fuse base contact (12), a primary wiring terminal (13), a voltage division capacitor (14) and a secondary wiring terminal (15);
the fuse protector comprises a main body fuse base (11), primary wiring terminals (13) arranged at two ends of the main body fuse base (11) and used for connecting a high-voltage side and a load side, fuse base contacts (12) arranged together with the primary wiring terminals (13) and used for fixing and connecting contacts of a fuse element, a voltage-dividing capacitor (14) arranged in the main body fuse base (11), one end of the voltage-dividing capacitor connected with embedded nuts which are poured in the base and used for fixing the primary wiring terminals through wires, and the other end of the voltage-dividing capacitor connected to a secondary wiring terminal (15);
the fuse part component (2) mainly comprises a fuse part (21), and the fuse is fixed on a grounded metal mounting plate by utilizing an embedded nut of a main body fuse base (11);
the controller is an electronic circuit and can be arranged in an instrument room or a panel in an embedded or fixed installation mode; the input end of the controller is connected to a secondary wiring terminal (15) of a main body fuse base (11) by adopting a wire, and a signal converted by the controller is connected to an output terminal in a dry contact mode to output a fuse electrified state and a fuse fusing signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812753.8A CN111986966A (en) | 2020-08-13 | 2020-08-13 | High-voltage current-limiting fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812753.8A CN111986966A (en) | 2020-08-13 | 2020-08-13 | High-voltage current-limiting fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111986966A true CN111986966A (en) | 2020-11-24 |
Family
ID=73435415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010812753.8A Pending CN111986966A (en) | 2020-08-13 | 2020-08-13 | High-voltage current-limiting fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111986966A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2079802U (en) * | 1990-11-15 | 1991-06-26 | 郑玮 | Outdoor high voltage dropping type fuse |
| US5736918A (en) * | 1996-06-27 | 1998-04-07 | Cooper Industries, Inc. | Knife blade fuse having an electrically insulative element over an end cap and plastic rivet to plug fill hole |
| CN2461139Y (en) * | 2001-01-19 | 2001-11-21 | 黎其臻 | Remote-control high voltage drop type fuse device |
| CN201498356U (en) * | 2009-09-24 | 2010-06-02 | 黄石市金雀电气有限公司 | Electronic combined power mutual inductor |
| CN103426701A (en) * | 2013-08-23 | 2013-12-04 | 西安赛盈电气设备有限公司 | Plug-in circuit protection device |
| CN203552921U (en) * | 2013-10-28 | 2014-04-16 | 大连北方互感器集团有限公司 | Voltage transformer provided with plum blossom contact device and used for wheelbarrow |
| US8823387B1 (en) * | 2011-03-11 | 2014-09-02 | Electro-Mechanical Corporation | Blown fuse detector |
| CN107403710A (en) * | 2017-09-12 | 2017-11-28 | 国网陕西省电力公司延安供电公司 | XRW Novel outdoor fuses |
| JP2018098016A (en) * | 2016-12-12 | 2018-06-21 | デクセリアルズ株式会社 | Protection element |
| CN208189517U (en) * | 2018-05-04 | 2018-12-04 | 河北东高电力器材有限公司 | A kind of outdoor high-voltage closing fuse switch |
| CN208433360U (en) * | 2018-06-23 | 2019-01-25 | 南京正锐电力科技有限公司 | High-voltage and current-limitation fuse is used in a kind of protection of high-voltage mutual inductor |
| CN111463060A (en) * | 2020-04-27 | 2020-07-28 | 深圳智汇电力科技有限公司 | Isolating circuit breaker |
| CN111489944A (en) * | 2020-05-06 | 2020-08-04 | 安徽明玑电力设备有限公司 | High-voltage fuse structure and insulating operating rod matched with same |
-
2020
- 2020-08-13 CN CN202010812753.8A patent/CN111986966A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2079802U (en) * | 1990-11-15 | 1991-06-26 | 郑玮 | Outdoor high voltage dropping type fuse |
| US5736918A (en) * | 1996-06-27 | 1998-04-07 | Cooper Industries, Inc. | Knife blade fuse having an electrically insulative element over an end cap and plastic rivet to plug fill hole |
| CN2461139Y (en) * | 2001-01-19 | 2001-11-21 | 黎其臻 | Remote-control high voltage drop type fuse device |
| CN201498356U (en) * | 2009-09-24 | 2010-06-02 | 黄石市金雀电气有限公司 | Electronic combined power mutual inductor |
| US8823387B1 (en) * | 2011-03-11 | 2014-09-02 | Electro-Mechanical Corporation | Blown fuse detector |
| CN103426701A (en) * | 2013-08-23 | 2013-12-04 | 西安赛盈电气设备有限公司 | Plug-in circuit protection device |
| CN203552921U (en) * | 2013-10-28 | 2014-04-16 | 大连北方互感器集团有限公司 | Voltage transformer provided with plum blossom contact device and used for wheelbarrow |
| JP2018098016A (en) * | 2016-12-12 | 2018-06-21 | デクセリアルズ株式会社 | Protection element |
| CN107403710A (en) * | 2017-09-12 | 2017-11-28 | 国网陕西省电力公司延安供电公司 | XRW Novel outdoor fuses |
| CN208189517U (en) * | 2018-05-04 | 2018-12-04 | 河北东高电力器材有限公司 | A kind of outdoor high-voltage closing fuse switch |
| CN208433360U (en) * | 2018-06-23 | 2019-01-25 | 南京正锐电力科技有限公司 | High-voltage and current-limitation fuse is used in a kind of protection of high-voltage mutual inductor |
| CN111463060A (en) * | 2020-04-27 | 2020-07-28 | 深圳智汇电力科技有限公司 | Isolating circuit breaker |
| CN111489944A (en) * | 2020-05-06 | 2020-08-04 | 安徽明玑电力设备有限公司 | High-voltage fuse structure and insulating operating rod matched with same |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201124 |