CN2296075Y - Outdoor arc blast drop down high voltage fuse - Google Patents

Outdoor arc blast drop down high voltage fuse Download PDF

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Publication number
CN2296075Y
CN2296075Y CN 97202123 CN97202123U CN2296075Y CN 2296075 Y CN2296075 Y CN 2296075Y CN 97202123 CN97202123 CN 97202123 CN 97202123 U CN97202123 U CN 97202123U CN 2296075 Y CN2296075 Y CN 2296075Y
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CN
China
Prior art keywords
contact
fuse
fixed contact
outdoor
joint sleeve
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.)
Expired - Fee Related
Application number
CN 97202123
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Chinese (zh)
Inventor
马中山
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Individual
Original Assignee
Individual
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Publication date
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Priority to CN 97202123 priority Critical patent/CN2296075Y/en
Application granted granted Critical
Publication of CN2296075Y publication Critical patent/CN2296075Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an outdoor arc extinguishing falling type high voltage fuse. A positioning contact plate is fixed between a main fixed contact with an inwards concave cambered surface and a right angle baffle of the main fixed contact in an electric conduction and mutual switching mode. The contact plate is positioned beside the inwards concave cambered surface on the main fixed contact, and a lower connecting sleeve and a fuse tube are connected through a moveable fixing device. Therefore, the targeting of the switching of the fuse is easy, the compatibility to insulating porcelain columns with different lengths is good, the phenomena of burning out contacts and burning out arc extinguishing covers can be eliminated, and the safety and the service life are improved.

Description

A kind of outdoor extinguishing arc high-voltage explosion fuse
The utility model relates to a kind of fuse, particularly a kind of outdoor extinguishing arc high-voltage explosion fuse.
Some outdoor extinguishing arc high-tension fuses are arranged, because its structural defective often causes the improper damage of fuse in the prior art.For example: Chinese utility model patent (publication number is CN86203590U) name is called the fuse that " the outdoor drop-out type high-tension fuse that arc-control device is arranged " provides, on its main fixed contact, have only the cambered surface of a depression to make the active contact contact the state that puts in place and connect that reaches with it, when using the fuse of this structure, firmly need strict control in the combined floodgate, otherwise the not in place or excessive problem of closing a floodgate of closing a floodgate often appears, the meeting not in place of closing a floodgate causes heating of contact, sparking, even the scaling loss contact; In a single day closing a floodgate excessively then to make the secondary moving contact in parallel with the active contact stuck in arc control device, circuit overloads takes place in this state, can not realize behind the fuse opening that cartridge fuse carries falling of active contact and secondary moving contact.In addition, is connecting of fixed position at cartridge fuse with lower carriage, like this, the lower carriage of cartridge fuse and the distance between the upper bracket are fixed, and then it is just fixing to connect distance between the two ends of insulation porcelain knob, can differ 15 millimeters at most as the length between the standard component insulation porcelain knob, (certain tolerance standard being arranged because make porcelain knob) is therefore just very poor to the interchangeability of insulation porcelain knob, after changing long insulation porcelain knob, the problem that just might cause contact base and lower carriage to block and cartridge fuse is fallen, changing short insulation porcelain knob, that contact base is contacted with lower carriage is insecure, occurs not choosing, the problem under plucking not.
The purpose of this utility model is to improve the deficiencies in the prior art, the outdoor extinguishing arc high-voltage explosion fuse that provides a kind of combined floodgate to be easy to put in place, and further purpose of the present utility model is that this high-tension fuse is improved for the interchangeability of insulation porcelain knob.
The purpose of this utility model is achieved in that this outdoor extinguishing arc high-voltage explosion fuse is made up of insulation porcelain knob, upper and lower contact electric installation and cartridge fuse, one arc-extinguish chamber, active contact, main fixed contact, secondary moving contact and secondary fixed contact are arranged in last contact electric installation, major and minor moving contact parallel connection, be installed on the upper joint sleeve of cartridge fuse, major and minor fixed contact parallel connection, be positioned on the fixed mount of contact electric installation, wherein secondary fixed contact is installed in the arc-extinguish chamber.Between the right-angle baffle of main fixed contact that has inner concave arc surface and main fixed contact, fix a location contact plate conductively and mutually with connecting, described location contact plate is positioned at the next door of inner concave arc surface on the main fixed contact, described location contact plate is resilient member, to impel cartridge fuse to fall at fuse failure by its elastic force.When closing a floodgate, when initiatively contact props up described location contact plate, its also just with main fixed contact on inner concave arc surface match, as overexertion, because the prevention of location contact plate is arranged, the excessive problem of closing a floodgate can not appear, do not worry to close a floodgate excessively, also just can when closing a floodgate, use some strength more, also just can not go out to have closed a floodgate phenomenon not in place thus.
In order to realize the further purpose of the utility model, to link up between lower joint sleeve and the cartridge fuse by a movable fixed device between lower joint sleeve and the cartridge fuse, it is adjustable that distance between the upper and lower support is become, with the installation of the insulation porcelain knob that adapts to different length.Described movable fixture can be one piece of holding screw, on lower joint sleeve, make a call to a screw, screw-in described holding screw wherein is pressed on an end of the cartridge fuse in the lower joint sleeve, the length of insulation porcelain knob has determined the position of lower joint sleeve, and lower joint sleeve moves axially on cartridge fuse to contact base neither blocks and contact firmly with lower carriage after and with holding screw lower joint sleeve and cartridge fuse is fixed together.
The outdoor extinguishing arc high-voltage explosion fuse that the utility model provides is by having increased the location contact plate between main fixed contact and right-angle baffle, this fuse is closed a floodgate to be easy to put in place, the movable fixed device is set between lower joint sleeve and cartridge fuse makes upper and lower set spacing adjustable from becoming, interchangeability for the insulation porcelain knob is improved, therefore, make the scaling loss contact of this fuse, burn the phenomenon of arc-extinguish chamber and can eliminate, fail safe and useful life are improved.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural front view
Embodiment
As shown in Figure 1, respectively there is the screw 4 of a M10 at the two ends of insulation porcelain knob 1, water and cast from porcelain knob 1 two ends, use nut 3 fastening on it support 2 and support 29 again, and usefulness anchor ear 27 is fastening in the middle of the insulation porcelain knob 1.Protective plate 5 in the last contact electric installation, the right-angle baffle 16 of main fixed contact, main fixed contact 13, location contact plate 15, spring 20, gusset 7, arc-extinguish chamber all are fixed on the support 2.Terminal block 8 is fixed on the support 2 by bolt 6.The lower carriage 24, low protection cover 25, the terminal block 26 that contact down in the electric installation are fixed on the support 29 by screw.The upper end riveted joint upper joint sleeve 12 of cartridge fuse 28, secondary moving contact 11, active contact 14 and pallet axle 21.Lower joint sleeve 17 is fixed on the cartridge fuse by holding screw 18, contact base 23, and strainer 22 and upper joint sleeve 17 riveted joints, fuse 19 links with strainer 22.7 shapes location contact plate 15 usefulness elastomeric material tin-phosphor bronze plates are made.
Adjust holding screw 18 when using the utility model earlier, to determine the position of lower joint sleeve 17.Tighten fuse 19 by strainer 22, make the contact base 23 that is connected with strainer 22 put into the groove of lower carriage 24 then, make it and to get final product in interior flexible rotation.By location contact plate 15 active contact 14 is stopped in the semicircle cambered surface of main fixed contact 13 during combined floodgate, guarantee that under the pressure of spring 20 contact is good, make secondary moving contact 11 in arc control device, be in off-state simultaneously.Behind the big electric current blown fuse 19 of overload, the elastic force of location contact plate 15 usefulness itself and the pressure of spring 20 make the initiatively semicircle cambered surface of the main fixed contact 13 of contact 14 disengagings, the cradle head 30 that adds its deadweight and lower joint sleeve 17 and contact base 23 falls fully cut-offs, when drawing back fuse-box, initiatively contact 14 disconnects prior to secondary moving contact 11, at this moment do not have electric arc and produce, and the electric arc that secondary moving contact 11 is produced when disconnecting can disappear in arc-extinguish chamber fully only.

Claims (6)

1, a kind of outdoor extinguishing arc high-voltage explosion fuse, described fuse is by the insulation porcelain knob, on, under contact electric installation and cartridge fuse and form, in last contact electric installation, an arc-extinguish chamber is arranged, the active contact, main fixed contact, secondary moving contact and secondary fixed contact, main, secondary moving contact parallel connection, be installed on the upper joint sleeve of cartridge fuse, main, secondary fixed contact parallel connection, be positioned on the fixed mount of contact electric installation, wherein secondary fixed contact is installed in the arc-extinguish chamber, it is characterized in that: fix a location contact plate between the right-angle baffle of main fixed contact that has inner concave arc surface and main fixed contact conductively and mutually, described location contact plate is positioned at the next door of inner concave arc surface on the main fixed contact with connecting.
2, outdoor extinguishing arc high-voltage explosion fuse according to claim 1, it is characterized in that: described location contact plate is the member of flexible 7 shapes.
3, outdoor extinguishing arc high-voltage explosion fuse according to claim 2, it is characterized in that: described location contact plate is made of elastomeric material.
4, outdoor extinguishing arc high-voltage explosion fuse according to claim 3 is characterized in that: described location contact plate is made of the tin-phosphor bronze plate.
5, outdoor extinguishing arc high-voltage explosion fuse according to claim 1 is characterized in that: will link up between lower joint sleeve and the cartridge fuse by a movable fixed device between described lower joint sleeve and the cartridge fuse.
6, outdoor extinguishing arc high-voltage explosion fuse according to claim 5, it is characterized in that: described movable fixture can be one piece of holding screw, makes a call to a screw and connect described holding screw on lower joint sleeve.
CN 97202123 1997-03-11 1997-03-11 Outdoor arc blast drop down high voltage fuse Expired - Fee Related CN2296075Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97202123 CN2296075Y (en) 1997-03-11 1997-03-11 Outdoor arc blast drop down high voltage fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97202123 CN2296075Y (en) 1997-03-11 1997-03-11 Outdoor arc blast drop down high voltage fuse

Publications (1)

Publication Number Publication Date
CN2296075Y true CN2296075Y (en) 1998-10-28

Family

ID=33923357

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97202123 Expired - Fee Related CN2296075Y (en) 1997-03-11 1997-03-11 Outdoor arc blast drop down high voltage fuse

Country Status (1)

Country Link
CN (1) CN2296075Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103617936A (en) * 2013-10-30 2014-03-05 合保电气(芜湖)有限公司 A drop-out fuse
CN104821264A (en) * 2015-04-20 2015-08-05 国家电网公司 Universal drop-out fusion tube structure
CN112563091A (en) * 2020-11-30 2021-03-26 贵州电网有限责任公司 High-voltage distribution transformer drop-out fuse

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103617936A (en) * 2013-10-30 2014-03-05 合保电气(芜湖)有限公司 A drop-out fuse
CN103617936B (en) * 2013-10-30 2015-09-09 合保电气(芜湖)有限公司 A kind of fuse switch
CN104821264A (en) * 2015-04-20 2015-08-05 国家电网公司 Universal drop-out fusion tube structure
CN112563091A (en) * 2020-11-30 2021-03-26 贵州电网有限责任公司 High-voltage distribution transformer drop-out fuse

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C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee