CN111564347A - High-voltage fuse base structure with live indication - Google Patents
High-voltage fuse base structure with live indication Download PDFInfo
- Publication number
- CN111564347A CN111564347A CN202010373878.5A CN202010373878A CN111564347A CN 111564347 A CN111564347 A CN 111564347A CN 202010373878 A CN202010373878 A CN 202010373878A CN 111564347 A CN111564347 A CN 111564347A
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- China
- Prior art keywords
- voltage
- fuse base
- controller
- fuse
- electrified
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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
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/2045—Mounting means or insulating parts of the base, e.g. covers, casings
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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
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
- H01H85/303—Movable indicating elements
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- Fuses (AREA)
Abstract
The invention discloses a high-voltage fuse base structure with an electrified indication.A high-voltage capacitor is arranged in the high-voltage fuse base, one end of the high-voltage capacitor is connected with a receiving terminal or a feeding terminal by using a lead, the other end of the high-voltage capacitor is connected with an electrified indicator, the other side of the electrified indicator is connected to a nut on a flange through the lead and is grounded, and the lead, the high-voltage capacitor, the electrified indicator and the ground form a complete electrified display loop. The power receiving side contact and/or the power feeding side contact on the base are provided with high-voltage capacitive sensors, the fuse base is provided with an indicator for indicating the charged state of the power receiving side contact and/or the power feeding side contact of the fuse base, so that an operator can visually observe the charged state of the fuse base, a more friendly human-computer interface is provided, and the safety of a product is improved.
Description
The technical field is as follows:
the invention relates to a high-voltage fuse structure, in particular to a current-limiting fuse for protecting a voltage transformer of 3-35kV indoor high-voltage complete equipment. The fuse is mainly characterized in that a fuse base is provided with a charged indicator which is used for reflecting the charged state of a fuse isolator and converting a state signal into an electric signal.
Background art:
a high-voltage current-limiting fuse is used as a primary protection element of a high-voltage transformer in a high-voltage power distribution system, and when the voltage transformer has faults of overvoltage, resonance, grounding and the like, the fuse is fused to cut off a high-voltage side power supply of the voltage transformer so as to achieve the purposes of protecting the transformer and secondary equipment thereof and the like. The fuse mainly comprises a fuse base and a fuse element. The fuse base is fixedly installed in a high-voltage line, a power receiving side contact of the fuse base is connected to a high-voltage power supply side, and a power feeding side of the fuse base is connected to a voltage transformer. The fuse-link is the replaceable part, fuses when the fault current takes place in the fuse-link, plays the purpose of protection voltage transformer.
The fuse includes a pair of isolation plugs and a fuse element, the isolation plugs corresponding to the fuse base contacts. In the application of high-voltage transformer protection, the fuse element can be inserted and pulled out under the condition of load because the rated current of the fuse element is very small. In practical application, because of the danger of high-voltage live working and the fuse structure, the fuse element is not usually inserted or pulled in a live state, and whether the fuse base is live or not can not be visually observed when the fuse element is inserted or pulled out, so that certain safety risk is brought to maintenance work.
In a common application, the fuse is not provided with an electrified display function, an electrified display is separated from a high-voltage sensor, the high-voltage sensor is installed on a high-voltage electrified body, the electrified display is installed on an instrument door or a panel on the cabinet surface of a switch cabinet and used for observing the electrified condition of a high-voltage bus, and the fuse is not normally provided with the electrified display. The electrified indicator is directly and fixedly arranged on the fuse base and is specially used for indicating the electrified state of two sides (or one side) of the fuse base, so that the electrified indicator is more friendly to operators and improves the safety of products; can detect the electrified state of fuse-base both sides (or one side) through external circuit, through the comparison to both sides voltage signal, thereby can learn whether the fuse is put through and judge whether the fuse fuses, expanded automatic system's monitoring range, for monitored control system installs new "eyes", can realize once the twice and fuse.
Through install electrified demonstration indicator additional on fuse base, operating personnel can observe fuse base's electrified condition in the distant place easily, and electrified demonstration indicator inner circuit provides the electrical contact, can detect electrified signal through external circuit to monitor the fuse state, more be fit for automatic system and use.
Disclosure of Invention
The invention solves the main problems that the function of the electrified indicator is added on the traditional high-voltage fuse base without electrified indication, a more friendly human-computer interface is provided, and a remote signaling function is provided for an automatic system.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the high-voltage fuse base structure with the electrification indication is characterized in that the high-voltage fuse base is a semi-open cylindrical insulator, a receiving terminal and a feeding terminal which are embedded in the cylindrical insulator are electrically connected to a high-voltage side and a load side, the cylindrical insulator is fixed by a nut embedded in a flange, and the nut is reliably grounded;
the high-voltage fuse base is an epoxy cast insulator, a high-voltage capacitor is arranged in the high-voltage fuse base and is connected with a power receiving terminal or a feed terminal by a lead, the other end of the capacitor is connected with a controller, and the controller is further connected to an indicator lamp and a grounding nut embedded in an installation flange by a lead. The conducting wire, the high-voltage capacitor, the controller, the indicator light and the ground form a complete electrified display processing loop. The wires and capacitors are completely encased within the fuse base by the cast insulation.
The signal lamp dress is in the position that easy operating personnel observed on the fuse base, and the signal of following controller output is connected to the signal lamp through the wire of pouring in fuse base inside, and the pilot lamp is lighted when electrified indicator receives high-pressure electrified signal, and this signal lamp accessible shows different colours and distinguishes electrified state of receiving side or feed side.
The controller processes input signals from the high-voltage capacitor, the signals are processed into signal lamp output signals and electrical on-off signals, and a wiring terminal for connecting the output electrical on-off signals is arranged on the controller. The signal may be communicated to an automation system monitoring through an external circuit.
The further technology of the invention is as follows:
preferably, the signal lamp is connected with the fuse base in a plug-in mode.
Preferably, the controller and the fuse base are electrically connected in a plug-in mode.
Preferably, the controller is taken out without affecting the normal operation of the fuse, and a spring leaf is arranged at the bottom of the controller, the spring leaf is pressed when the controller is inserted, and the spring leaf is lifted to enable an input signal from the capacitor to be grounded (the capacitor output pin is in short circuit with the grounding pin) when the controller is pulled out.
Has the advantages that: the invention relates to a novel fuse base structure, wherein a live contact on a base is connected with a high-voltage capacitor, an indicator is arranged on the fuse base to indicate the live state of the fuse base contact, a controller is arranged on the fuse base to receive and process a live signal and output the live signal to an indicator lamp and an external circuit, so that an operator can visually observe the live state of the fuse base and provide remote signaling signals of live at two ends of a fuse, fuse wire fusing and the like for a monitoring system. Provides a more friendly human-computer interface, improves the safety of the product and provides conditions for the primary and secondary fusion.
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 schematic cross-sectional view of a high voltage fuse base structure;
FIG. 2 is a schematic block diagram of an electrical circuit;
FIG. 3 is a left side view of the fuse base structure;
FIG. 4 is a right side view of the fuse base structure;
FIG. 5 is a controller plug assembly view;
fig. 6 is a state diagram of the controller in a disassembled state.
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.
The invention provides a high-voltage fuse base structure with a live indication, as shown in figures 1-3, the fuse base is an epoxy cast body;
the open fuse base supported by an insulator is deformed into a semi-open cylindrical insulator, the cylindrical insulator can be fixed by using nuts embedded in a flange, a receiving terminal and a feeding terminal which are poured in an epoxy insulator are arranged outside the cylindrical insulator to be electrically connected to a power supply side and a load side, the cylindrical insulator is fixed by using the nuts embedded in the flange, the nuts provide reliable grounding for a live display system, a signal lamp is arranged at a position on the fuse base, which is easy to observe by an operator, a controller is arranged on the flange of the fuse base, and an interface of an indicator light and the controller is arranged on the fuse base.
The embodiments are illustrated in detail below by way of example in the figures:
relating to fuse holders
Fuse base 1: the whole body is made of an epoxy insulating material casting surface, the top end of the epoxy insulating material casting surface is provided with an exposed power receiving terminal 11 for receiving a high-voltage power supply, and the tail end of the epoxy insulating material casting surface is provided with an exposed power feeding terminal 12 for connecting a circuit to a mutual inductor. The fuse holder 1 has a cavity 13 therein for receiving the fuse element 3 and the fuse holder contacts. A nut 141 for grounding and fixing the fuse holder is embedded in the flange 14 of the fuse holder. The indicator lamp 25 and the controller 24 are fixed at appropriate positions outside the fuse holder 1.
For charged display systems;
as shown in fig. 2, the charged display system is divided into three parts: the input part is a signal acquisition part and comprises a high-voltage end (a power receiving terminal 11), a capacitor 21/22, a grounding end (a nut 141) and a connecting line thereof; the output portion is a signal feedback portion including an indicator lamp 25, an electric contact output terminal 245, and the like; the input and output signals are connected to a controller 24, and the controller 24 is an electronic circuit module responsible for processing the input and output signals.
As shown in fig. 1, 3 and 4, a high-voltage capacitor 21,22 is arranged inside the fuse base 1, and two ends of the high-voltage capacitor are connected with the terminal 11 or 12 and the controller 24 through a lead; the indicator lamp 25 is arranged at a place which is easy to observe at the operation side and is connected with the controller 24 by a lead; the capacitor 21/22 and the wires are completely cast inside the fuse base and meet the insulation requirements from the high voltage circuit.
The pilot lamp 25 dress is in the outside place of easily observing of fuse-base 1, and the electric socket that matches with pilot lamp 25 has been poured in fuse-base relevant position, and pilot lamp 25 is but plug module, and available intact pilot lamp directly replaces when the pilot lamp damages, and pilot lamp 25 distinguishes the electrified situation of receiving terminal and feed terminal with different luminous colour.
As shown in fig. 5, the controller 24 is mounted on the epoxy cast body flange 14, a pin row 241 is embedded in the flange 14, and a socket row 242 corresponding to the pin row is arranged in the controller 24 for transmitting input and output wires;
the controller 24 is mounted on the mounting flange 14 of the fuse base 1, a pin row 241 is embedded in a corresponding position on the flange 14, a module of the controller 24 corresponds to a socket row 243, and the electrical connection between the controller 24 and the fuse base 1 is realized through the insertion between the pin bases. The fixing means between the controller 24 and the fuse holder 1 are not shown in the drawings, and conventional mechanical fixing means such as screws or bayonet pins can be adopted, which is not described in detail. The controller 24 is further provided with an electrical contact 245 for leading out a state signal of live and fuse-blown by an external lead.
An elastic reed 243 is further arranged between the bottom surface of the controller 24 and the fuse base flange 14 and fixed on the concave surface of the flange 14, when the controller 24 is normally assembled, the controller presses the elastic reed 243 (as shown in fig. 5), when the controller 24 is taken down, the elastic reed 243 tilts to enable a pin for voltage sampling signals on the pin bank 241 to be short-circuited with a grounding pin (as shown in fig. 6), so that the sampling voltage signals obtained by the capacitor when the controller 24 is taken out are grounded, the phenomena of high voltage and high voltage discharge generated on the pin bank 241 are avoided, and the main body function of the fuse is not influenced even when the controller 24 is taken out.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation to be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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 (4)
1. High-voltage fuse base structure with electrified instruction, its characterized in that: the high-voltage fuse base is a semi-open cylindrical insulator, a power receiving terminal embedded in the cylindrical insulator is externally connected with a high-voltage power supply, a power feeding terminal is externally connected with a voltage transformer, and a fixing nut embedded in a flange of the cylindrical insulator is grounded;
the high-voltage fuse base is internally provided with a high-voltage capacitor, one end of the high-voltage capacitor is connected with a receiving terminal or a feeding terminal, the other end of the high-voltage fuse base is connected into the controller, the grounding terminal is connected into the controller through a wire, the indicator lamp is also connected into the controller through a wire, and the wire, the high-voltage capacitor, the controller, the indicator lamp and the ground form a complete electrified display loop.
2. A high voltage fuse base structure with charge indication as claimed in claim 1, wherein: the controller is electrically connected with the high-voltage fuse base in an electric plug mode.
3. A high voltage fuse base structure with charge indication as claimed in claim 1, wherein: the indicator light is electrically connected with the high-voltage fuse base in an electric plug mode.
4. A high voltage fuse base structure with charge indication as claimed in claim 1, wherein: a spring leaf is arranged between the controller and the high-voltage fuse base, and when the controller is pulled out, the spring leaf grounds a sampling voltage signal from the capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373878.5A CN111564347A (en) | 2020-05-06 | 2020-05-06 | High-voltage fuse base structure with live indication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373878.5A CN111564347A (en) | 2020-05-06 | 2020-05-06 | High-voltage fuse base structure with live indication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111564347A true CN111564347A (en) | 2020-08-21 |
Family
ID=72071840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010373878.5A Pending CN111564347A (en) | 2020-05-06 | 2020-05-06 | High-voltage fuse base structure with live indication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111564347A (en) |
-
2020
- 2020-05-06 CN CN202010373878.5A patent/CN111564347A/en active Pending
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