CN204349231U - A kind of fuse unit and use the switch cubicle of this fuse unit - Google Patents

A kind of fuse unit and use the switch cubicle of this fuse unit Download PDF

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Publication number
CN204349231U
CN204349231U CN201420642751.9U CN201420642751U CN204349231U CN 204349231 U CN204349231 U CN 204349231U CN 201420642751 U CN201420642751 U CN 201420642751U CN 204349231 U CN204349231 U CN 204349231U
Authority
CN
China
Prior art keywords
fuse
cannelure
annular wall
cylindrical shell
cover
Prior art date
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.)
Withdrawn - After Issue
Application number
CN201420642751.9U
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Chinese (zh)
Inventor
王廷华
吴小钊
曹志民
师军伟
汤清双
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XUCHANG XUJI DRIESCHER WEGBERG ELECTRIC CO Ltd
State Grid Corp of China SGCC
Xuji Group Co Ltd
Original Assignee
XUCHANG XUJI DRIESCHER WEGBERG ELECTRIC CO Ltd
State Grid Corp of China SGCC
Xuji Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by XUCHANG XUJI DRIESCHER WEGBERG ELECTRIC CO Ltd, State Grid Corp of China SGCC, Xuji Group Co Ltd filed Critical XUCHANG XUJI DRIESCHER WEGBERG ELECTRIC CO Ltd
Priority to CN201420642751.9U priority Critical patent/CN204349231U/en
Application granted granted Critical
Publication of CN204349231U publication Critical patent/CN204349231U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of fuse unit and uses the switch cubicle of this fuse unit.Wherein a kind of fuse unit comprises fuse cylindrical shell and fuse cover, it is characterized in that: one of them of described fuse cylindrical shell and fuse cover is provided with cannelure and/or annular wall, both another is provided with for coordinating with described cannelure and/or annular wall sleeve and forms annular wall and/or the cannelure of maze-type structure, between the annular wall that cannelure on fuse cylindrical shell and/or annular wall and fuse unit cover and/or cannelure, there is radial clearance, during installation, annular wall and cannelure sleeve is relied on to coordinate fuse cylindrical shell and fuse cover, centering is good, labour intensity is low, easy for installation, and gap defines non-tight to be connected, good heat dispersion can be ensured, simultaneously, the maze-type structure that annular wall and cannelure are formed can prevent creeping discharge, form surface insulation, ensure insulation property.

Description

A kind of fuse unit and use the switch cubicle of this fuse unit
Technical field
The utility model relates to a kind of fuse unit and uses the switch cubicle of this fuse unit.
Background technology
Fuse unit is one of indispensable vitals in switch cubicle; circuit can be cut off when electric current is excessive and make dropout thimble action wherein and realize threading off; safeguard protection effect is played to switch cubicle, therefore, the fail safe of the direct influencer's high-tension switch cabinet operation of performance of fuse unit.
Existing fuse unit generally comprises fuse cylindrical shell and fuse cover, fuse cylindrical shell is provided with terminals and fuse inner barrel is provided with fuse installation cavity, fuse cover is in-built to be furnished with the dropout thimble along the axial movable setting of fuse unit and to be provided with the thimble perforation of stretching out for dropout thimble, and dropout thimble drives corresponding tripping mechanism action for outwards extending when fuse blows.The fuse cover of existing fuse unit needs shutoff to be fixed on fuse cylindrical shell when using, and the junction of fuse cylindrical shell and fuse cover adopts silicone rubber sleeve seal and realize interfacial insulator.Owing to adopting silicon rubber interfacial insulator, complex operation when installing fuse cover in installation process, need larger operating physical force and stricter operating environment, labour intensity is large, and centering is poor, easily occur that the problems such as not in place or interfacial insulator inefficacy installed by fuse, be not easy to installation, inspection and maintenance; Further, due to interfacial insulator employing is sealed construction, is therefore unfavorable for that fuse unit dispels the heat, easily causes the temperature rise of switch cubicle too high, affect the reliability and stability of switch cubicle.In addition, fuse cylindrical shell in existing switch cubicle fuse unit is primarily of metal support and insulating cylinder two parts composition, size is relative with insulation property fixing, and fuse cylindrical shell size needed for different electric pressure is different with insulation property, therefore existing fuse unit is difficult to the requirement of satisfied different electric pressure, poor universality.
Utility model content
The purpose of this utility model is to provide a kind of fuse unit being convenient to install, and meanwhile, the utility model additionally provides a kind of switch cubicle using this fuse unit.
The technical scheme that in the utility model, a kind of fuse unit adopts is: a kind of fuse unit, comprise fuse cylindrical shell and fuse cover, one of them of described fuse cylindrical shell and fuse cover is provided with cannelure and/or annular wall, both another is provided with for coordinating with described cannelure and/or annular wall sleeve and forms annular wall and/or the cannelure of maze-type structure, has radial clearance between the annular wall that the cannelure on fuse cylindrical shell and/or annular wall and fuse unit cover and/or cannelure.
Described fuse cylindrical shell is provided with one cylindrical shell cannelure, cylindrical shell annular wall together with described cylindrical shell cannelure is formed between the inner chamber of fuse cylindrical shell; Described fuse unit covers the cover cannelure being provided with and inserting for described cylindrical shell annular wall for one, and the radial outside of described cover cannelure is provided with together for inserting the cover annular wall in described cylindrical shell cannelure.
Described cannelure is flaring structure, and described annular wall is the wedge structure that top thickness is less than bottom thickness.
Described fuse unit has dropout thimble, described fuse unit covers and is provided with for the axially movable thimble container cavity that arrange of described dropout thimble along fuse cover, be provided with the maze-type structure formed by the thimble annular wall coordinated along the mutual sleeve of described axis and thimble cannelure between described fuse cover and described dropout thimble, between the thimble annular wall that mutual sleeve coordinates and thimble cannelure, there is radial clearance.
Described fuse cylindrical shell comprises the fore-stock, after-poppet and the removable intermediate insulation cylinder be fixed between fore-stock and after-poppet that axially set gradually along it, described after-poppet shutoff is in the open rearward end of described intermediate insulation cylinder, the tubular construction that described fore-stock is through before and after being, cannelure and/or the annular wall of described fuse cylindrical shell are arranged on described fore-stock.
Described fuse unit covers the corresponding end be provided with for fuse and fixes and conduct electricity the connector of connection, and described fuse cylindrical shell is provided with for conducting electricity with described connector the conductive contact finger be connected, and described conductive contact finger conducts electricity with the corresponding binding post of fuse unit external body and connects.
Described connector is be provided with the conduction copper sheathing supplying the corresponding end of described fuse coaxially to plug fixing interstitial hole.
The technical scheme that in the utility model, a kind of switch cubicle adopts is: a kind of switch cubicle, comprise cabinet and fuse unit, described fuse unit comprises fuse cylindrical shell and fuse cover, it is characterized in that: one of them of described fuse cylindrical shell and fuse cover is provided with cannelure and/or annular wall, both another is provided with for coordinating with described cannelure and/or annular wall sleeve and forms annular wall and/or the cannelure of maze-type structure, has radial clearance between the annular wall that the cannelure on fuse cylindrical shell and/or annular wall and fuse unit cover and/or cannelure.
Described fuse cylindrical shell is provided with one cylindrical shell cannelure, cylindrical shell annular wall together with described cylindrical shell cannelure is formed between the inner chamber of fuse cylindrical shell; Described fuse unit covers the cover cannelure being provided with and inserting for described cylindrical shell annular wall for one, the radial outside of described cover cannelure is provided with together for inserting the cover annular wall in described cylindrical shell cannelure, described cannelure is flaring structure, and described annular wall is the wedge structure that top thickness is less than bottom thickness.
Described fuse unit has dropout thimble, described fuse unit covers and is provided with for the axially movable thimble container cavity that arrange of described dropout thimble along fuse cover, be provided with the maze-type structure formed by the thimble annular wall coordinated along the mutual sleeve of described axis and thimble cannelure between described fuse cover and described dropout thimble, between the thimble annular wall that mutual sleeve coordinates and thimble cannelure, there is radial clearance.
The utility model adopts technique scheme, one of them of described fuse cylindrical shell and fuse cover is provided with cannelure and/or annular wall, both another is provided with for coordinating with described cannelure and/or annular wall sleeve and forms annular wall and/or the cannelure of maze-type structure, between the annular wall that cannelure on fuse cylindrical shell and/or annular wall and fuse unit cover and/or cannelure, there is radial clearance, by the above-mentioned annular wall that arranges between fuse cylindrical shell and fuse cover and cannelure, annular wall and cannelure sleeve is relied on to coordinate fuse cylindrical shell and fuse cover during installation, centering is good, labour intensity is low, easy for installation, and gap defines non-tight to be connected, good heat dispersion can be ensured, simultaneously, the maze-type structure that annular wall and cannelure are formed can prevent creeping discharge, form surface insulation, ensure insulation property.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of an embodiment of a kind of fuse unit in the utility model;
Fig. 2 is the structural representation of fuse cylindrical shell in Fig. 1;
Fig. 3 is the structural representation of fuse cover in Fig. 1.
The name that in figure, each Reference numeral is corresponding is called: 10-fuse cylindrical shell, 11-after-poppet, 12-intermediate insulation cylinder, 13-fore-stock, 20-plum blossom deck, binding post after 21-, 22-support column, 23-after-poppet sealing ring, 24-fore-stock sealing ring, 25-conductive contact finger, binding post before 26-, 30-cylindrical shell cannelure, 31-cylindrical shell annular wall, 32-shell flange, 33-closure gasket groove, 40-fuse cover, 41-cover cannelure, 42-cover annular wall, 43-conducts electricity copper sheathing, 44-interstitial hole, 45-thimble through hole, 50-dropout thimble, 51-thimble annular wall, 52-thimble cannelure, 60-fuse, 70-handle.
Embodiment
In the utility model, an a kind of embodiment of fuse unit is as shown in Fig. 1 ~ Fig. 3, is a kind of fuse unit for switch cubicle, forms primarily of fuse cylindrical shell 10 and fuse cover 40.
Fuse cylindrical shell 10 adopts Split type structure, comprises the fore-stock 13, after-poppet 11 and the removable intermediate insulation cylinder 12 be fixed between fore-stock 13 and after-poppet 11 that axially set gradually along it.After-poppet 11 for vertical section be the rotary structure of U-shaped, front end is had the lap segment that to overlap with the rear end of intermediate insulation cylinder 12 and coordinate and is set in the open rearward end of intermediate insulation cylinder 12 by lap segment and after-poppet sealing ring 23 shutoff be arranged on lap segment outer peripheral face.The inwall of the bottom of after-poppet 11 is provided with plum blossom deck 20, inserts and conduct electricity connection for the corresponding end of corresponding fuse 60.Fore-stock 13 is the through tubular constructions in front and back, and its rear end is had the lap segment that to overlap with the front end of intermediate insulation cylinder 12 and coordinate and is set in the front opening of intermediate insulation cylinder 12 by lap segment and the fore-stock sealing ring 24 be arranged on lap segment outer peripheral face.Fore-stock 13 is also provided with shell flange 32, shell flange 32 is provided with for closure gasket groove 33 for the end face be connected with switch cabinet body, can add sealing ring to realize sealing and effect that is moistureproof, anti-filthy condensation when fuse cylindrical shell 10 is installed on switch cubicle.Intermediate insulation cylinder 12 adopts the insulating material such as glass wool cloth cylinder to process, and can be processed into different length according to different electric pressures, adapt to different electric pressures, versatility is good.
Fuse cover 40 shutoff is plugged in the front opening of fuse cylindrical shell 10 and coaxially arranges with fuse cylindrical shell 10, the front end surface of the fore-stock 13 of fuse cylindrical shell 10 is provided with one cylindrical shell cannelure 30, cylindrical shell annular wall 31 together with described cylindrical shell cannelure 30 is formed between the inner chamber of fore-stock 13; The rear end end face of fuse cover is provided with the cover cannelure 41 inserted for described cylindrical shell annular wall 31 for one, the radial outside of described cover cannelure 41 is provided with together for inserting the cover annular wall 42 in described cylindrical shell cannelure 30, and the cannelure on fuse cylindrical shell 10 and annular wall cover between corresponding annular wall and cannelure with fuse unit has radial clearance.By above-mentioned annular wall and the cannelure of setting between fuse cylindrical shell 10 and fuse cover 40, annular wall and cannelure sleeve is relied on to coordinate fuse cylindrical shell 10 and fuse cover 40 during installation, centering is good, labour intensity is low, easy for installation, and gap defines non-tight to be connected, and can ensure good heat dispersion.In order to make fuse cover 40 be installed to more easily on fuse cylindrical shell 10, cannelure is set to flaring structure, and annular wall is set to the wedge structure that top thickness is less than bottom thickness.
Fuse cover 40 rear end is coaxially fixed with conduction copper sheathing 43, and the corresponding end that conduction copper sheathing 43 is provided with for fuse 60 coaxially plugs fixing interstitial hole 44, forms and fix for fuse 60 and to conduct electricity the connector of connection.Accordingly, the inwall of the fore-stock 13 of fuse cylindrical shell 10 is fixed with conductive contact finger 25, this conductive contact finger 25 is formed by power spring contact, can contact and conduct electricity and connect when fuse cover 40 plugs and puts in place with the outer peripheral face of conduction copper sheathing 43.The fore-stock 13 of fuse cylindrical shell 10 is also provided with to conduct electricity with conductive contact finger 25 be connected before binding post 26, the after-poppet 11 of fuse cylindrical shell 10 is provided with and conducts electricity the rear binding post 21 be connected with plum blossom deck 20, facilitates wiring.The after-poppet 11 of fuse cylindrical shell 10 is also provided with support column 22, so that install.
Fuse cover 40 is provided with thimble container cavity in the front of conduction copper sheathing 43, corresponding dropout thimble 50 is movably arranged in thimble container cavity along the axis of fuse cover 40 in advance, the external diameter of dropout thimble 50 is greater than the internal diameter of conduction copper sheathing 43, can avoid deviating from thimble container cavity.Fuse cover 40 front end is provided with the thimble through hole 45 passed for dropout thimble 50, dropout thimble 50 can be stretched out when fault and drive corresponding tripping mechanism.Twice thimble annular wall 51 and thimble cannelure 52 is provided with between fuse cover 40 and described dropout thimble 50, thimble annular wall corresponding between fuse cover 40 and dropout thimble 50 and thimble cannelure vertically mutual sleeve coordinate and have radial clearance between the two, form maze-type structure, form surface insulation, the regular event of dropout thimble 50 can be ensured while ensureing insulation effect.Further, dropout thimble 50 is a simple revolving parts, and process simple and be convenient to assembling, in dropout process, energy loss is few, and Interruption is stablized, and reliability is high.
For the ease of using, the front end of fuse cover 40 is also fixed with handle 70, and handle 70 is fixed on the marginal portion of fuse cover 40, and shank overhangs, and forms lever construction, is conducive to extracting of fuse cover 40, rapid operation.
During installation, the fuse 60 in advance fastening conduction copper sheathing 43 being arranged on fuse cover 40 will make its front end and conduction copper sheathing 43 reliable contacts, then make to be provided with cover cannelure 41 on the fuse cover 40 of fuse 60 and cover annular wall 42 and aim at cylindrical shell annular wall 31 on fuse cylindrical shell 10 respectively and cylindrical shell cannelure 30 inwardly pushes, make corresponding cannelure form sleeve with annular wall to coordinate, form maze-type structure, form surface insulation.After fuse cover 40 is in place, conduction plum blossom deck 20 reliable contacts on fuse 60 rear end and after-poppet 11, conducts electricity copper sheathing 43 and the power spring contact reliable contacts on fore-stock 13 inwall simultaneously, realizes being communicated with of fuse 60 and circuit.Because the gap in maze-type structure between annular wall and cannelure is less, therefore do not need to carry out radial location to fuse cover 40 in addition, certainly, in order to improve installation accuracy, also can arrange corresponding supporting construction and carry out radial location to fuse cover 40, this is that those skilled in the art do not need to pay creative work and attainable.Finally, rely on the corresponding top laminated structure arranged on switch cubicle fuse cover 40 to be compressed vertically the installation namely completing fuse unit, assembling, easy for installation, be convenient to install at use spot replace, thermal diffusivity is good.
In the utility model, an a kind of embodiment of switch cubicle comprises cabinet and fuse unit, and the structure of cabinet is same as the prior art, and the fuse unit in fuse unit and above-described embodiment, no longer describes in detail herein.
In the above-described embodiments, fuse cylindrical shell 10 is together with on fuse cover 40, the quantity of cannelure/annular wall is, and the cannelure/annular wall of threading off between thimble 50 and fuse cover 40 is twice, and fuse cylindrical shell 10 employing is Split type structure.In other embodiments of the present utility model, on fuse cylindrical shell 10 and fuse cover 40 cannelure/annular wall quantity and between dropout thimble 50 and fuse cover 40 quantity of upper cannelure/annular wall also can increase and decrease, and fuse cylindrical shell 10 also can be overall structure.

Claims (10)

1. a fuse unit, comprise fuse cylindrical shell and fuse cover, it is characterized in that: one of them of described fuse cylindrical shell and fuse cover is provided with cannelure and/or annular wall, both another is provided with for coordinating with described cannelure and/or annular wall sleeve and forms annular wall and/or the cannelure of maze-type structure, has radial clearance between the annular wall that the cannelure on fuse cylindrical shell and/or annular wall and fuse unit cover and/or cannelure.
2. a kind of fuse unit according to claim 1, is characterized in that: described fuse cylindrical shell is provided with one cylindrical shell cannelure, cylindrical shell annular wall together with described cylindrical shell cannelure is formed between the inner chamber of fuse cylindrical shell; Described fuse unit covers the cover cannelure being provided with and inserting for described cylindrical shell annular wall for one, and the radial outside of described cover cannelure is provided with together for inserting the cover annular wall in described cylindrical shell cannelure.
3. a kind of fuse unit according to claim 1 and 2, is characterized in that: described cannelure is flaring structure, and described annular wall is the wedge structure that top thickness is less than bottom thickness.
4. a kind of fuse unit according to claim 1 and 2, it is characterized in that: described fuse unit has dropout thimble, described fuse unit covers and is provided with for the axially movable thimble container cavity that arrange of described dropout thimble along fuse cover, be provided with the maze-type structure formed by the thimble annular wall coordinated along the mutual sleeve of described axis and thimble cannelure between described fuse cover and described dropout thimble, between the thimble annular wall that mutual sleeve coordinates and thimble cannelure, there is radial clearance.
5. a kind of fuse unit according to claim 1 and 2, it is characterized in that: described fuse cylindrical shell comprises the fore-stock, after-poppet and the removable intermediate insulation cylinder be fixed between fore-stock and after-poppet that axially set gradually along it, described after-poppet shutoff is in the open rearward end of described intermediate insulation cylinder, the tubular construction that described fore-stock is through before and after being, cannelure and/or the annular wall of described fuse cylindrical shell are arranged on described fore-stock.
6. a kind of fuse unit according to claim 1 and 2, it is characterized in that: described fuse unit covers the corresponding end be provided with for fuse and fixes and conduct electricity the connector of connection, described fuse cylindrical shell is provided with for conducting electricity with described connector the conductive contact finger be connected, and described conductive contact finger conducts electricity with the corresponding binding post of fuse unit external body and connects.
7. a kind of fuse unit according to claim 6, is characterized in that: described connector is be provided with the conduction copper sheathing supplying the corresponding end of described fuse coaxially to plug fixing interstitial hole.
8. a switch cubicle, comprise cabinet and fuse unit, described fuse unit comprises fuse cylindrical shell and fuse cover, it is characterized in that: one of them of described fuse cylindrical shell and fuse cover is provided with cannelure and/or annular wall, both another is provided with for coordinating with described cannelure and/or annular wall sleeve and forms annular wall and/or the cannelure of maze-type structure, has radial clearance between the annular wall that the cannelure on fuse cylindrical shell and/or annular wall and fuse unit cover and/or cannelure.
9. a kind of switch cubicle according to claim 8, is characterized in that: described fuse cylindrical shell is provided with one cylindrical shell cannelure, cylindrical shell annular wall together with described cylindrical shell cannelure is formed between the inner chamber of fuse cylindrical shell; Described fuse unit covers the cover cannelure being provided with and inserting for described cylindrical shell annular wall for one, the radial outside of described cover cannelure is provided with together for inserting the cover annular wall in described cylindrical shell cannelure, described cannelure is flaring structure, and described annular wall is the wedge structure that top thickness is less than bottom thickness.
10. a kind of switch cubicle according to claim 8 or claim 9, it is characterized in that: described fuse unit has dropout thimble, described fuse unit covers and is provided with for the axially movable thimble container cavity that arrange of described dropout thimble along fuse cover, be provided with the maze-type structure formed by the thimble annular wall coordinated along the mutual sleeve of described axis and thimble cannelure between described fuse cover and described dropout thimble, between the thimble annular wall that mutual sleeve coordinates and thimble cannelure, there is radial clearance.
CN201420642751.9U 2014-10-31 2014-10-31 A kind of fuse unit and use the switch cubicle of this fuse unit Withdrawn - After Issue CN204349231U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420642751.9U CN204349231U (en) 2014-10-31 2014-10-31 A kind of fuse unit and use the switch cubicle of this fuse unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420642751.9U CN204349231U (en) 2014-10-31 2014-10-31 A kind of fuse unit and use the switch cubicle of this fuse unit

Publications (1)

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CN204349231U true CN204349231U (en) 2015-05-20

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CN201420642751.9U Withdrawn - After Issue CN204349231U (en) 2014-10-31 2014-10-31 A kind of fuse unit and use the switch cubicle of this fuse unit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281140A (en) * 2015-11-24 2016-01-27 西安中熔电气有限公司 Miniature outdoor quick plug-type fuse base
CN107527777A (en) * 2016-06-22 2017-12-29 施耐德电器工业公司 Fuse assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281140A (en) * 2015-11-24 2016-01-27 西安中熔电气有限公司 Miniature outdoor quick plug-type fuse base
CN107527777A (en) * 2016-06-22 2017-12-29 施耐德电器工业公司 Fuse assembly

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GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20150520

Effective date of abandoning: 20170721