CN107492475A - Low-voltage fuse body for transformer platform on a kind of 10kV integrations post - Google Patents

Low-voltage fuse body for transformer platform on a kind of 10kV integrations post Download PDF

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Publication number
CN107492475A
CN107492475A CN201710689260.8A CN201710689260A CN107492475A CN 107492475 A CN107492475 A CN 107492475A CN 201710689260 A CN201710689260 A CN 201710689260A CN 107492475 A CN107492475 A CN 107492475A
Authority
CN
China
Prior art keywords
low
contact knife
voltage fuse
integrations
fuse body
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.)
Granted
Application number
CN201710689260.8A
Other languages
Chinese (zh)
Other versions
CN107492475B (en
Inventor
吴辉
戎峰
高珺力
吴彪
徐鹤
倪溢雯
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.)
SHANGHAI ELECTRIC CERAMIC WORKS CO Ltd
Original Assignee
SHANGHAI ELECTRIC CERAMIC WORKS 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 SHANGHAI ELECTRIC CERAMIC WORKS CO Ltd filed Critical SHANGHAI ELECTRIC CERAMIC WORKS CO Ltd
Priority to CN201710689260.8A priority Critical patent/CN107492475B/en
Publication of CN107492475A publication Critical patent/CN107492475A/en
Application granted granted Critical
Publication of CN107492475B publication Critical patent/CN107492475B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/02Details
    • H01H85/04Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/044General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/02Details
    • H01H85/04Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05Component parts thereof
    • H01H85/055Fusible members
    • H01H85/08Fusible members characterised by the shape or form of the fusible member
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/02Details
    • H01H85/04Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05Component parts thereof
    • H01H85/143Electrical contacts; Fastening fusible members to such contacts
    • H01H85/153Knife-blade-end contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/02Details
    • H01H85/04Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05Component parts thereof
    • H01H85/18Casing fillings, e.g. powder
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/02Details
    • H01H85/22Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse

Landscapes

  • Fuses (AREA)

Abstract

The invention discloses low-voltage fuse body for transformer platform on a kind of 10kV integrations post, including upper contact knife, lower contact knife and melt, the upper contact knife is identical with lower contact knife structure, include contact, upper gusset piece and second line of a couplet fishplate bar, the second line of a couplet fishplate bar is in external tooth wheel-like structure, including circular plate body and outer peripheral some double wedges of the circular plate body and some concave tooth are arranged on, some double wedges and some concave tooth are arranged at intervals successively;Some row's fractures are offered successively from top to bottom on each melt, often arrange the narrow neck in fracture between every two adjacent fractures and uiform section structure be present, and the length of the uiform section structure is more than 1.2mm.Low-voltage fuse body for transformer platform on the 10kV integration posts of the present invention, has that temperature rise is low in energy consumption and the characteristic of high breaking capacity, has relatively low temperature rise and power consumption, under conditions of ambient temperature is 50 DEG C, only super 45k, power consumption are no more than 30W for temperature rise.

Description

Low-voltage fuse body for transformer platform on a kind of 10kV integrations post
Technical field
The present invention relates to low-voltage fuse body for transformer platform on a kind of 10kV integrations post.
Background technology
10kV integration pole type transformer platforms are mainly used in open air, and solar irradiation is more, and environment temperature is of a relatively high, should The use under the particular surroundings can not be met with the low-voltage fuse body of bad environments, therefore existing protection purposes.To state in 2017 Family's power network is revised to transformer platform modular design and inspection criterion regulation, to the spy substantially of low-voltage fuse body for transformer platform on post Property demand be further determined, low-voltage fuse body out of doors 50 DEG C when need to meet that 1.5 times of rated current do not melt for 2 hours Disconnected, 2 times of rated current fuse in 1 hour;In addition to temperature rise consumption conditions are met, also to meet operating chacteristics.Numerous harsh Under the conditions of, low-voltage fuse body need to have temperature rise low in energy consumption and the characteristic dual indexes of high breaking capacity.
Number row's size identical circle fracture is offered on conventional melt, is often arranged in circular fracture per two adjacent circles Narrow neck between fracture is variable cross-section, is linear at the distance minimum of the narrow neck between every two adjacent circular fractures , when larger short circuit current passes through melt, often arrange in circular fracture per the narrow neck between two adjacent circular fractures by It is heated rapidly in heating effect of current, rise until melt fuses with disjunction circuit, has higher temperature rise to local temperature rapidly And power consumption, and breaking capacity is low.
The content of the invention
The purpose of the present invention is the defects of overcoming prior art, there is provided low pressure fusing for transformer platform on a kind of 10kV integrations post Body, the size of fuse-link have No. 1, No. 2 and No. 3 respectively, have that temperature rise is low in energy consumption and the characteristic of high breaking capacity, have relatively low Temperature rise and power consumption, ambient temperature be 50 DEG C under conditions of, only super 45k, power consumption are no more than 30W for temperature rise.
Realizing the technical scheme of above-mentioned purpose is:Low-voltage fuse body for transformer platform on a kind of 10kV integrations post, including it is upper tactile Knife, lower contact knife and melt, wherein:
The upper contact knife is identical with lower contact knife structure, including contact, upper gusset piece and second line of a couplet fishplate bar, the upper gusset piece Middle part and the middle part of second line of a couplet fishplate bar offer contact installing port respectively, the contact is plugged on touching for the upper gusset piece successively In the contact installing port of head installing port and second line of a couplet fishplate bar;
The upper contact knife and lower contact knife are oppositely arranged;
The second line of a couplet fishplate bar is in external tooth wheel-like structure, including circular plate body and the outward flange for being arranged on the circular plate body Some double wedges and some concave tooth, some double wedges and some concave tooth be arranged at intervals successively;
Between the corresponding double wedge of the second line of a couplet fishplate bar of each double wedge of the second line of a couplet fishplate bar of the upper contact knife and lower contact knife and One is respectively arranged between the corresponding concave tooth of the second line of a couplet fishplate bar of each concave tooth of the second line of a couplet fishplate bar of the upper contact knife and lower contact knife The melt;
Per two adjacent melts not in the same plane;
Some row's fractures are offered successively from top to bottom on each melt, are often arranged in fracture per two adjacent fractures Between narrow neck uiform section structure be present, and the length of the uiform section structure is more than 1.2mm.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, per two adjacent row's fractures not same In one plane.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, on the medial surface of each melt It is welded with Xi Qiao.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, the shape of each fracture is in water chestnut Shape or hexagon.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, the melt uses oxygenless copper material It is made.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, on each melt from top to bottom At least three row's fractures are offered successively.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, the low-voltage fuse body also includes outer Shell, the shell include the cover plate of fusion tube and closure at the fusion tube upper and lower opening end, and the fusion tube is socketed in the upper contact knife Upper gusset piece and lower contact knife upper gusset piece between, and the cover plate is positioned at the outside of corresponding upper gusset piece, the cover plate On be provided with mount hole.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, the fusion tube is aoxidized using high intensity Aluminum porcelain is made.
Low-voltage fuse body for transformer platform on a kind of above-mentioned 10kV integrations post, wherein, filled out in the fusion tube filled with arc extinguishing Material, the arc suppression filling use quartz sand.
Low-voltage fuse body for transformer platform on the 10kV integration posts of the present invention, has that temperature rise is low in energy consumption and a high breaking capacity Characteristic, under conditions of ambient temperature is 50 DEG C, only super 45k, power consumption are no more than 30W for temperature rise, can be interlock circuit And component provides reliable protection.
Brief description of the drawings
Fig. 1 is the structural representation of low-voltage fuse body for transformer platform on the 10kV integration posts of the present invention;
Fig. 1 a are Fig. 1 front view;
Fig. 1 b are Fig. 1 side view;
Fig. 2 is the structural representation (removing fusion tube) of low-voltage fuse body for transformer platform on the 10kV integration posts of the present invention;
Fig. 2 a are Fig. 2 side view;
Fig. 2 b are Fig. 2 top view;
Fig. 3 is the three-dimensional structure diagram of upper contact knife and lower contact knife;
Fig. 4 is the three-dimensional structure diagram of second line of a couplet fishplate bar;
Fig. 5 a are the three-dimensional structure diagram of melt;
Fig. 5 b are the front view of melt;
Fig. 5 c are the structural representation of part A in Fig. 5 b;
Fig. 5 d are the side view of melt.
Embodiment
In order that those skilled in the art are better understood when technical scheme, it is right below in conjunction with the accompanying drawings Its embodiment is described in detail:
Refer to Fig. 1 to Fig. 2 b, highly preferred embodiment of the present invention, low-voltage fuse body for transformer platform on a kind of 10kV integrations post 3, including upper contact knife 32, lower contact knife 33, melt 31 and shell.
Referring to Fig. 3, upper contact knife 32 is identical with the lower structure of contact knife 33, including contact 34, upper gusset piece 35 and lower link Plate 36, the middle part of upper gusset piece 35 and the middle part of second line of a couplet fishplate bar 36 offer contact installing port respectively, and contact 34 is plugged on successively In the contact installing port of upper gusset piece 35 and the contact installing port 361 of second line of a couplet fishplate bar 36;Upper contact knife 32 and lower contact knife 33 are set relatively Put.
Referring to Fig. 4, second line of a couplet fishplate bar 36 is in external tooth wheel-like structure, including circular plate body 362 and it is arranged on circular plate body 362 outer peripheral some double wedges 363 and some concave tooth 364, some double wedges 363 and some concave tooth 364 are arranged at intervals successively.Circle The middle part of shape plate body 362 opens up contact installing port 361.
Refer to Fig. 2 to Fig. 2 b, each double wedge 363 of the second line of a couplet fishplate bar 36 of upper contact knife 32 and lower contact knife 33 second line of a couplet fishplate bar Between 36 corresponding double wedge 363 and each concave tooth 364 of the second line of a couplet fishplate bar 36 of upper contact knife 32 and the lower link of lower contact knife 33 A melt 31 is respectively arranged between the corresponding concave tooth 364 of plate 36.Per two adjacent melts 31 not in the same plane, i.e., Per two adjacent melts 31 be a convex recessed arrangement, not only increase melt radiating, while on solid space each melt piece and Invisible increase is spaced between piece, is not easy to alter arc, is advantageous to disjunction.
Fig. 1 to Fig. 1 b is referred to, shell includes fusion tube 37 and closure in the cover plate 372 at the upper and lower opening end of fusion tube 37, fusion tube 37 are socketed between the upper gusset piece 35 of the upper gusset piece 35 of contact knife 32 and lower contact knife 33, and cover plate 372 is on accordingly The outside of gusset piece 35, mount hole 371 is provided with cover plate 372.Fusion tube 37 is made of high-strength alumina ceramic material.Fusion tube Arc suppression filling is filled with 37, arc suppression filling uses quartz sand.
Fig. 5 a to Fig. 5 d are referred to, some row's fractures 311 is offered successively from top to bottom on each melt 31, often arranges fracture In per the narrow neck 312 between two adjacent fractures 311 uiform section structure be present, and the length L of uiform section structure is more than 1.2mm.It is planar structure at the distance minimum of i.e. narrow neck, by narrow neck between the circular fracture on the melt of traditional fuse Linear structure at distance minimum is changed to planar structure.
Per two adjacent row's fractures 311 not in the same plane, high low head be present.Welded on the medial surface of each melt 31 It is connected to tin bridge 313.The shape of each fracture 311 assumes diamond in shape or hexagon.Preferably, opened successively from top to bottom on each melt 31 Provided with least three row's fractures 311.
Melt is made of oxygenless copper material.Oxygen-free copper for it is not oxygen-containing also be free of any deoxidier residue fine copper, one As for oxygen-free copper oxygen content be not more than 0.003%, content of impurities be not more than 0.05%, the purity of copper is more than 99.95%;The drawability of oxygen-free copper is good, and oxygen-free copper bar is mingled with few, and oxygen content is stable, no hot rolling there may be the defects of, anaerobic Copper is the sign of no hydrogen embrittlement, and its conductance is high, is a kind of good rapidoprint.Its machining function and welding function is very Original, in addition, the anti-corrosion function of this copper copper is also fine, oxidation resistance is stronger.Furthermore it is exactly its high temperature resistant Function is also very strong.Than can be worked well under relatively rugged environment.
Low-voltage fuse body for transformer platform on the 10kV integration posts of the present invention, the circle on the melt of traditional fuse is broken Mouthful, hexagon fracture or rhombus fracture are changed to, the narrow neck in fracture between every two adjacent fractures is often arranged and uiform section knot be present Structure, so as to temperature rise is low in energy consumption and the characteristic of high breaking capacity.
In summary, low-voltage fuse body for transformer platform on 10kV integration posts of the invention, have temperature rise low in energy consumption and high The characteristic of breaking capacity, there is relatively low temperature rise and power consumption, under conditions of ambient temperature is 50 DEG C, temperature rise only surpasses 45k, power consumption are no more than 30W, can provide reliable protection for interlock circuit and component.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention, And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above Change, modification will all fall in the range of claims of the present invention.

Claims (9)

  1. A kind of 1. low-voltage fuse body for transformer platform on 10kV integrations post, it is characterised in that including upper contact knife, lower contact knife and melt, Wherein:
    The upper contact knife is identical with lower contact knife structure, including contact, upper gusset piece and second line of a couplet fishplate bar, in the upper gusset piece Portion and the middle part of second line of a couplet fishplate bar offer contact installing port respectively, and the contact is plugged on the contact peace of the upper gusset piece successively In the contact installing port for filling mouth and second line of a couplet fishplate bar;
    The upper contact knife and lower contact knife are oppositely arranged;
    The second line of a couplet fishplate bar is in external tooth wheel-like structure, if including circular plate body and being arranged on the outer peripheral of the circular plate body Dry double wedge and some concave tooth, some double wedges and some concave tooth are arranged at intervals successively;
    It is between the corresponding double wedge of the second line of a couplet fishplate bar of each double wedge of the second line of a couplet fishplate bar of the upper contact knife and lower contact knife and described It is respectively arranged between the corresponding concave tooth of the second line of a couplet fishplate bar of each concave tooth of the second line of a couplet fishplate bar of upper contact knife and lower contact knife described in one Melt;
    Per two adjacent melts not in the same plane;
    Some row's fractures are offered successively from top to bottom on each melt, are often arranged in fracture between every two adjacent fractures Narrow neck uiform section structure be present, and the length of the uiform section structure is more than 1.2mm.
  2. 2. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 1, it is characterised in that per adjacent Two row's fractures not in the same plane.
  3. 3. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 1, it is characterised in that Mei Gesuo State and Xi Qiao is welded with the medial surface of melt.
  4. 4. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 1, it is characterised in that Mei Gesuo The shape for stating fracture assumes diamond in shape or hexagon.
  5. 5. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 1, it is characterised in that described molten Body is made of oxygenless copper material.
  6. 6. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 1, it is characterised in that Mei Gesuo State and offer at least three row's fractures on melt successively from top to bottom.
  7. 7. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 1 to 6 any one, its feature It is, the low-voltage fuse body also includes shell, and the shell includes the lid of fusion tube and closure at the fusion tube upper and lower opening end Plate, the fusion tube is socketed between the upper gusset piece of the upper contact knife and the upper gusset piece of lower contact knife, and the cover plate is located at phase The outside for the upper gusset piece answered, mount hole is provided with the cover plate.
  8. 8. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 7, it is characterised in that described molten Pipe is made of high-strength alumina ceramic material.
  9. 9. low-voltage fuse body for transformer platform on a kind of 10kV integrations post according to claim 7, it is characterised in that described molten Arc suppression filling is filled with pipe, the arc suppression filling uses quartz sand.
CN201710689260.8A 2017-08-08 2017-08-08 Low-voltage fuse body for transformer platform on a kind of 10kV integration column Expired - Fee Related CN107492475B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710689260.8A CN107492475B (en) 2017-08-08 2017-08-08 Low-voltage fuse body for transformer platform on a kind of 10kV integration column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710689260.8A CN107492475B (en) 2017-08-08 2017-08-08 Low-voltage fuse body for transformer platform on a kind of 10kV integration column

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CN107492475A true CN107492475A (en) 2017-12-19
CN107492475B CN107492475B (en) 2018-12-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108511299A (en) * 2018-06-04 2018-09-07 苏州达晶微电子有限公司 A kind of novel surface attachment fuse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191029122A (en) * 1910-12-15 1912-01-15 Vernon Hope Improvements in Fusible Cut-outs for Controlling Electric Circuits.
GB1240787A (en) * 1968-12-17 1971-07-28 Ferraz & Cie Lucien Improvements in or relating to cartridge fuses
CN204857648U (en) * 2015-08-31 2015-12-09 温州金利达电器有限公司 Fast acting fuse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191029122A (en) * 1910-12-15 1912-01-15 Vernon Hope Improvements in Fusible Cut-outs for Controlling Electric Circuits.
GB1240787A (en) * 1968-12-17 1971-07-28 Ferraz & Cie Lucien Improvements in or relating to cartridge fuses
CN204857648U (en) * 2015-08-31 2015-12-09 温州金利达电器有限公司 Fast acting fuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108511299A (en) * 2018-06-04 2018-09-07 苏州达晶微电子有限公司 A kind of novel surface attachment fuse

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