CN112542367B - Fuse for power distribution protection - Google Patents
Fuse for power distribution protection Download PDFInfo
- Publication number
- CN112542367B CN112542367B CN202011345070.2A CN202011345070A CN112542367B CN 112542367 B CN112542367 B CN 112542367B CN 202011345070 A CN202011345070 A CN 202011345070A CN 112542367 B CN112542367 B CN 112542367B
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- China
- Prior art keywords
- fuse
- shell
- fixedly connected
- adjusting rod
- movable
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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
- H01H85/26—Magazine arrangements
- H01H85/28—Magazine arrangements effecting automatic replacement
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a fuse for power distribution protection, which comprises a shell, wherein one end of the shell is fixedly connected with a fixed cover, the lower side of the shell is fixedly connected with an input end, the other end of the shell is movably connected with a rotary cover, the middle part of one end of the rotary cover is fixedly connected with an output end, the middle part of an inner cavity of the shell is fixedly connected with a blocking rod, and one end of the rotary cover, which is positioned in the inner cavity of the shell, is movably sleeved with an adjusting rod. The invention can make the adjusting rod move forwards or backwards by rotating the rotating cover when the fuse protector is used for protecting the electric appliance, and the length of the fuse wire connected with the current at the lower end of the adjusting rod is changed by the matching of the spring and the adjusting block, and the resistance of the fuse wire is changed according to the principle that the resistance of the fuse wire changes along with the length change, so that the rated current of the fuse wire is changed, and further the rated current of the fuse protector can be adjusted.
Description
Technical Field
The invention belongs to the technical field of electrical safety, and particularly relates to a fuse for power distribution protection.
Background
The fuse is an electric appliance which can break a circuit by fusing a melt by heat generated by the fuse when the current exceeds a specified value, and the fuse melts the melt by the heat generated by the fuse after the current exceeds the specified value for a period of time, thereby breaking the circuit.
The traditional fuse utilizes a metal conductor as a fuse body to be connected in series in a circuit, the fuse is fused due to self heating when overload or short-circuit current passes through the fuse body, thereby breaking the circuit, different electrical equipment is suitable for fuses with different rated currents according to different rated currents, sometimes, in order to protect the circuit, two or more fuses are needed to be added for parallel use, so as to achieve the protection of different electrical appliances, but because the fuse has a simple structure, the fuse does not have the function of regulating the rated current, an electrician needs to prepare a plurality of fuses with different rated currents for circuit protection when overhauling or debugging the circuit, and the traditional fuse needs to be integrally replaced after the fuse is fused, but for instruments such as an experiment table, a large number of fuses can be lost every day due to misoperation, and the experiment cost can be increased due to integral replacement.
Disclosure of Invention
Aiming at the defects of the existing fuse protector in the use process in the background technology, the invention provides the fuse protector for power distribution protection, which has the advantages of rated current regulation and convenience in wire replacement and solves the technical problems in the background technology.
The invention provides the following technical scheme: the utility model provides a fuse for distribution protection, includes the casing, the one end fixedly connected with fixed lid of casing, the downside fixedly connected with input of casing, the other end swing joint of casing has rotatory lid, the middle part fixedly connected with output of rotatory lid one end, the middle part fixedly connected with shelves pole of casing inner chamber, the one end activity that rotatory lid is located the casing inner chamber has cup jointed the regulation pole, and adjusts the pole and be the screw thread form with rotatory lid swing joint department, the inner chamber swing joint of casing has the regulating block that is located the input just opposite, the regulating block passes through the inner wall swing joint of spring and casing, the right-hand member activity of adjusting the pole has cup jointed the conducting rod, and the other end and the output fixed connection of conducting rod, the fuse swing joint is passed through with the inboard of input in the middle part of regulating block.
Furthermore, movable grooves are formed in two sides of the inner cavity of the shell, a movable barrel located on the outer surface of the right end of the adjusting rod is movably sleeved at the middle of the inner cavity of the rotary cover, a movable block is movably sleeved at the middle of the movable groove, a fuse wire is vertically connected between the movable block located in the upper movable groove and the movable block located in the lower movable groove, and a hydraulic cavity located on the right side of the movable barrel is formed in the inner cavity of the rotary cover.
Furthermore, the inner cavity of the shell is provided with a guide groove below the adjusting rod, the adjusting rod is movably connected with the inner cavity of the guide groove, the moving range of the adjusting rod is the same as the length of the guide groove, and the middle part of the left end of the adjusting rod is of a one-way buckle structure.
Has the advantages that:
1. the invention can make the adjusting rod move forwards or backwards by rotating the rotating cover when the fuse protector is used for protecting the electric appliance, and the length of the fuse wire connected with the current at the lower end of the adjusting rod is changed by the matching of the spring and the adjusting block, and the resistance of the fuse wire is changed according to the principle that the resistance of the fuse wire changes along with the length change, so that the rated current of the fuse wire is changed, and further the rated current of the fuse protector can be adjusted.
2. According to the invention, by arranging the automatic fuse wire replacing mechanism, when the fuse wire protects the electric appliance, the fuse wire is blown due to overlarge current, the temperature of hydraulic oil in the hydraulic cavity is gradually raised under the action of heat conduction of the adjusting rod and the conductive rod, the hydraulic oil is heated and expanded, the movable cylinder drives the adjusting rod to move outwards, the middle part of the next fuse wire which is not fused is clamped by the front end of the adjusting rod, and after liquid in the hydraulic cavity is gradually cooled, the movable cylinder drives the limiting rod to automatically reset under the action of negative pressure in the hydraulic cavity, so that the fuse wire drives the movable blocks at two sides to move, and the input end is communicated with the output end.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic view of the structure rated current regulation of the present invention;
fig. 3 is a perspective view of the structural adjustment rod of the present invention.
In the figure: 1. a housing; 2. a fixed cover; 3. an input end; 4. an output end; 5. a rotating cover; 6. a gear lever; 7. adjusting a rod; 8. an adjusting block; 9. a spring; 10. a conductive rod; 11. a fuse; 12. a guide groove; 13. a movable groove; 14. a movable barrel; 15. a movable block; 16. a hydraulic chamber.
Detailed Description
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a fuse for power distribution protection comprises a housing 1, a fixed cover 2 is fixedly connected to one end of the housing 1, an input terminal 3 is fixedly connected to the lower side of the housing 1, a rotary cover 5 is movably connected to the other end of the housing 1, an output terminal 4 is fixedly connected to the middle of one end of the rotary cover 5, a stop lever 6 is fixedly connected to the middle of the inner cavity of the housing 1, an adjusting lever 7 is movably sleeved to one end of the rotary cover 5 located in the inner cavity of the housing 1, the movable connection between the adjusting lever 7 and the rotary cover 5 is threaded, an adjusting block 8 located opposite to the input terminal 3 is movably connected to the inner cavity of the housing 1, a conductive rod 10 is movably sleeved to the right end of the adjusting lever 7, the other end of the conductive rod 10 is fixedly connected to the output terminal 4, the middle of the adjusting block 8 is movably connected to the inner side of the input terminal 3 through a fuse wire 11, through rotating the rotating cover 5, make the regulation pole 7 that is located inside casing 1 remove under the effect of its right-hand member screw thread, thereby make the fuse 11 with 8 left ends joint of regulating block stretched right or left release under the effect of regulation pole 7 and shelves pole 6, and through spring 9 with the upper end and the casing 1 inner wall swing joint of fuse 11, guarantee fuse 11 can stretch out and draw back at certain extent, make the fuse 11 length that is located 7 downside participation circuit of regulation pole and switches on can receive control, through the length that control fuse 11 switched on the circuit, reach the purpose of control fuse 11 resistance, and then can carry out effective control to the rated current of fuse.
Wherein, the two sides of the inner cavity of the shell 1 are provided with movable grooves 13, the middle part of the inner cavity of the rotary cover 5 is movably sleeved with a movable cylinder 14 positioned on the outer surface of the right end of the adjusting rod 7, the middle part of the movable groove 13 is movably sleeved with a movable block 15, a fuse wire 11 is vertically connected between the movable block 15 positioned in the upper movable groove 13 and the movable block 15 positioned in the lower movable groove 13, the inner cavity of the rotary cover 5 is provided with a hydraulic cavity 16 positioned on the right side of the movable cylinder 14, when electrical protection is performed, after the fuse wire 11 is heated and fused due to overlarge current, under the heat conduction action of the adjusting rod 7 and the conductive rod 10, the high temperature generated when the fuse wire 11 is fused is conducted to the hydraulic oil in the hydraulic cavity 16, so that the hydraulic oil is heated and expanded, and then the movable cylinder 14 drives the adjusting rod 7 to be pushed out leftwards under the action of increasing the pressure in the hydraulic cavity 16, so that the left end of the adjusting rod 7 is connected with the fuse wire 11 positioned on the left side of the fused fuse wire 11 in a clamping manner, after the temperature in the hydraulic cavity 16 is slowly reduced, the movable cylinder 14 drives the adjusting rod 7 to automatically reset under the action of negative pressure in the hydraulic cavity 16, and the adjusting rod 7 drives the movable blocks 15 clamped at two ends of the fuse wire 11 to move so as to be communicated with the rated current adjusting mechanism, so that the subsequent fuse can still protect the electric appliance at the same rated current.
In order to ensure that the adjusting rod 7 and the conducting rod 10 can have good electrical conductivity and thermal conductivity at the same time, the adjusting rod 7 and the conducting rod 10 are made of copper, so that the adjusting rod 7 and the conducting rod 10 can complete a circuit conduction function and a hydraulic oil temperature conduction function in the hydraulic cavity 16.
The inner cavity of the shell 1 is provided with a guide groove 12 located below the adjusting rod 7, the adjusting rod 7 is movably connected with the inner cavity of the guide groove 12, the moving range of the adjusting rod 7 is the same as the length of the guide groove 12, the middle of the left end of the adjusting rod 7 is of a one-way buckle structure, and by the arrangement of the guide groove 12, when the rotary cover 5 rotates, the adjusting rod 7 only can transversely move along the guide groove 12, the situation that the fuse wire 11 is twisted and broken by rotation when the rated current of the fuse is adjusted is avoided, and the fuse wire 11 cannot fall off due to the movement of the adjusting rod 7 through the one-way buckle structure after automatic wire replacement is completed.
The using method of the invention is as follows:
rated current regulation: the starting current of an electric appliance to be protected is detected through a specification or a universal meter, then the cover 5 is rotated in a forward or reverse rotation manner, the adjusting rod 7 is moved leftwards or rightwards under the action of a right end thread of the adjusting rod, and under the matching of the gear rod 6 and a clamping structure at the left end of the adjusting rod 7, the adjusting block 8 at the upper end of the fuse wire 11 is reset under the action of the spring 9 or outwards moves against the elastic force of the spring 9, so that the length of the fuse wire 11 positioned below the adjusting rod 7 is lengthened or shortened, the rated current of the fuse wire is changed under the action that the resistance of the fuse wire 11 changes along with the length change of the fuse wire, the rated current of the fuse wire can be adjusted to a proper value, and the fuse wire can protect the electric appliance to be protected;
automatic wire replacement: when the electric appliance is protected by the fuse, because the current flowing from the input end 3 to the output end 4 is too large, the fuse wire 11 is fused under the action of self heating of the fuse wire 11, the temperature of the adjusting rod 7 and the conducting rod 10 is gradually increased, so that hydraulic oil in the hydraulic cavity 16 at the right end of the conducting rod 10 is heated and expanded, the movable cylinder 14 and the adjusting rod 7 are pushed out to the left greatly, the fuse wire 11 at the left side of the fused fuse wire 11 can be clamped by the clamping structure at the left end of the adjusting rod 7, and after the temperature in the hydraulic cavity 16 is gradually reduced, the movable cylinder 14 drives the adjusting rod 7 to automatically reset under the action of negative pressure, the clamped fuse wire 11 drives the movable blocks 15 at the two ends of the fuse wire to move and is connected into a circuit, the automatic wire replacement is completed, and the fuse can continuously protect the circuit.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a fuse for distribution protection, includes casing (1), the one end fixedly connected with fixed lid (2) of casing (1), its characterized in that: the input end (3) is fixedly connected to the lower side of the shell (1), the rotary cover (5) is movably connected to the other end of the shell (1), the output end (4) is fixedly connected to the middle of one end of the rotary cover (5), the baffle rod (6) is fixedly connected to the middle of the inner cavity of the shell (1), the adjusting rod (7) is movably sleeved at one end of the inner cavity of the shell (1) of the rotary cover (5), the movably connected part of the adjusting rod (7) and the rotary cover (5) is in a thread shape, the adjusting block (8) which is positioned right opposite to the input end (3) is movably connected to the inner cavity of the shell (1) through a spring (9), the conductive rod (10) is movably sleeved at the right end of the adjusting rod (7), and the other end of the conductive rod (10) is fixedly connected to the output end (4), fuse (11) swing joint is passed through with the inboard of input (3) in the middle part of regulation piece (8), guide way (12) that are located regulation pole (7) below are seted up to the inner chamber of casing (1), and adjust the inner chamber swing joint of pole (7) and guide way (12), the home range of adjusting pole (7) is the same with the length of guide way (12), and adjusts the middle part of pole (7) left end and be one-way buckle structure for adjust pole (7) left end and fuse (11) joint.
2. A fuse for power distribution protection as defined in claim 1, wherein: movable groove (13) have been seted up to the both sides of casing (1) inner chamber, movable section of thick bamboo (14) that are located regulation pole (7) right-hand member surface have been cup jointed in the middle part activity of rotatory lid (5) inner chamber, movable block (15) have been cup jointed in the middle part activity of movable groove (13), and vertically be connected with fuse (11) between movable block (15) that are located upside movable groove (13) and movable block (15) that are located downside movable groove (13), hydraulic pressure chamber (16) that are located movable section of thick bamboo (14) right side have been seted up to the inner chamber of rotatory lid (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345070.2A CN112542367B (en) | 2020-11-26 | 2020-11-26 | Fuse for power distribution protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345070.2A CN112542367B (en) | 2020-11-26 | 2020-11-26 | Fuse for power distribution protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112542367A CN112542367A (en) | 2021-03-23 |
| CN112542367B true CN112542367B (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011345070.2A Active CN112542367B (en) | 2020-11-26 | 2020-11-26 | Fuse for power distribution protection |
Country Status (1)
| Country | Link |
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| CN (1) | CN112542367B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114121571B (en) * | 2021-10-28 | 2023-11-21 | 宁通电气科技有限公司 | Intelligent circuit protector for power distribution system |
| CN114520134B (en) * | 2022-02-25 | 2022-11-18 | 徐州志欧机电设备有限公司 | Environment-friendly fuse for electrical equipment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725643A (en) * | 1980-07-24 | 1982-02-10 | Fuji Electric Co Ltd | Automatic fuse switching unit |
| DE3221919A1 (en) * | 1982-06-11 | 1983-12-15 | Wickmann-Werke GmbH, 5810 Witten | Electrical fuse with a fusing element |
| KR101236196B1 (en) * | 2011-09-07 | 2013-02-22 | (주)엠에스테크비젼 | Repeatable fuse having manually returned structure |
| CN204088239U (en) * | 2014-09-05 | 2015-01-07 | 浙江麦格电气有限公司 | Self-recoverage fuse |
| CN204375691U (en) * | 2015-02-12 | 2015-06-03 | 赵宇 | A kind of electricity Physical Experiment fuse |
| CN105161386A (en) * | 2015-08-07 | 2015-12-16 | 马人欢 | Fast-recovery electric power fuse |
| CN106128896A (en) * | 2016-08-24 | 2016-11-16 | 朱小涛 | A kind of quick-change type fuse |
| WO2018016179A1 (en) * | 2016-07-19 | 2018-01-25 | ソニー株式会社 | Switching device, moving body and power supply system |
| CN108172481A (en) * | 2018-01-10 | 2018-06-15 | 刘嘉豪 | A kind of high-tension fuse for being conveniently replaceable fuse-link |
| CN108352280A (en) * | 2016-07-08 | 2018-07-31 | 株式会社Lg化学 | Multistage fuse |
| CN110429014A (en) * | 2019-08-22 | 2019-11-08 | 杭州金心科技有限公司 | A kind of apparatus for automatic change of power distribution cabinet fuse |
-
2020
- 2020-11-26 CN CN202011345070.2A patent/CN112542367B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725643A (en) * | 1980-07-24 | 1982-02-10 | Fuji Electric Co Ltd | Automatic fuse switching unit |
| DE3221919A1 (en) * | 1982-06-11 | 1983-12-15 | Wickmann-Werke GmbH, 5810 Witten | Electrical fuse with a fusing element |
| KR101236196B1 (en) * | 2011-09-07 | 2013-02-22 | (주)엠에스테크비젼 | Repeatable fuse having manually returned structure |
| CN204088239U (en) * | 2014-09-05 | 2015-01-07 | 浙江麦格电气有限公司 | Self-recoverage fuse |
| CN204375691U (en) * | 2015-02-12 | 2015-06-03 | 赵宇 | A kind of electricity Physical Experiment fuse |
| CN105161386A (en) * | 2015-08-07 | 2015-12-16 | 马人欢 | Fast-recovery electric power fuse |
| CN108352280A (en) * | 2016-07-08 | 2018-07-31 | 株式会社Lg化学 | Multistage fuse |
| WO2018016179A1 (en) * | 2016-07-19 | 2018-01-25 | ソニー株式会社 | Switching device, moving body and power supply system |
| CN106128896A (en) * | 2016-08-24 | 2016-11-16 | 朱小涛 | A kind of quick-change type fuse |
| CN108172481A (en) * | 2018-01-10 | 2018-06-15 | 刘嘉豪 | A kind of high-tension fuse for being conveniently replaceable fuse-link |
| CN110429014A (en) * | 2019-08-22 | 2019-11-08 | 杭州金心科技有限公司 | A kind of apparatus for automatic change of power distribution cabinet fuse |
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| Publication number | Publication date |
|---|---|
| CN112542367A (en) | 2021-03-23 |
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