CN202601543U - Leftwards inclined E-shaped fitting for insulating enclosed type fuse - Google Patents
Leftwards inclined E-shaped fitting for insulating enclosed type fuse Download PDFInfo
- Publication number
- CN202601543U CN202601543U CN 201220093383 CN201220093383U CN202601543U CN 202601543 U CN202601543 U CN 202601543U CN 201220093383 CN201220093383 CN 201220093383 CN 201220093383 U CN201220093383 U CN 201220093383U CN 202601543 U CN202601543 U CN 202601543U
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- fuse
- gold utensil
- font
- enclosed type
- formula
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Abstract
The utility model relates to a leftwards inclined E-shaped fitting for an insulating enclosed type fuse, which comprises a cylindrical clip hoop for hoping and fastening a main part of the fuse. The leftwards inclined E-shaped fitting is characterized in that on side of the cylindrical clip hoop for hoping and fastening the main part of the fuse is provided with a fixture installation part; a slide-on hanger hole for hitching hanger components arranged on a cross arm or an electrical column is formed on the fixture installation part, and the fixture installation part in a leftwards inclined E-shaped. The leftwards inclined E-shaped fitting provided by the utility model has the beneficial effects of simple alignment process, small labor intensity, no falling off of and no damage to the fuse in the operating process and convenient disassembly and installation.
Description
[technical field]
The utility model relates to electrical equipment technical field, specifically, is a kind of mountain font gold utensil that is used for insulating enclosed type fuse.
[background technology]
In the past, for protection transformer or distribution line, often used fuse switch.
On-load fuse switch (hereinafter to be referred as fuse) is applicable to below the rated voltage 10kV, rated current 200A, in the distribution line and distribution transformer of frequency 50Hz, as overload and short-circuit protection and branch, the usefulness of closing the rated load electric current.
Its products characteristics: fuse is made up of pedestal, arc-extinction device two large divisions.When fuse is in closing position; Dynamic and static contact is by the compression spring compression, and to guarantee between contact enough pressure being arranged, rotating torque spring is equipped with in the expulsion tube lower end; After melt is packed into; Torque spring is promptly tightened, and makes fuse be in tension, to guarantee expulsion tube self-locking when the closing position.
When circuit overload or the fusing of short circuit melt, fuse is pulled out in fusion tube rapidly by means of the effect of torque spring, and the heat energy of electric arc produces a large amount of arc extinguishing gases in fusion tube simultaneously, and electric arc is extinguished rapidly, to reduce the loss of arcing time and arc extinguishing material.Behind the arc extinction, fusion tube falls under the effect of deadweight and bridge-shaped contact compression spring automatically, realizes obviously visible fracture.But its shortcoming is:
(1) product technology is coarse, and workmanship is poor, and touch spring elasticity is not enough, causes the contact loose contact and to produce spark overheated.
What (2) the fusion tube rotation axis was made is coarse dumb; Make the fusion tube angle not reach the rules requirement; Especially the fusion tube size majority that is equipped with does not reach the rules requirement, and fusion tube is long with the duckbilled dieback, causes melt fusing back fusion tube not fall rapidly; In time with arc cutting, extinguish, cause fusion tube to burn or explode; The fusion tube size is short, the difficulty of closing a floodgate, and the contact loose contact produces electric spark, or it is dead to take place to get an electric shock.
(3) the fuse rated breaking-capacity is little, and its lower limit is less than by the three-phase shortcircuit capacity of protection system.At present, 10kV outdoor drop-out type fuse is divided into three types, i.e. 50A, 100A, 200A.The breaking capacity upper limit of 200A fuse switch is 200MVA, and lower limit is 20MVA.According to the ability of its rupturing capacity, we are not difficult to find out, timely arc extinguishing after melt fusing during short trouble also makes fusion tube burn easily or explodes.
(4) some new switch fusion tube size and fuse fixed contact divide size match improper; Very easily loosening, run into external force effect, vibration or strong wind weather in case be in operation, just malfunction and falling voluntarily; Not only reduce electricity sales amount, and be difficult to guarantee the power supply reliability index.
In view of the existence of above-mentioned several respects defective, common way in recent years is that insulating enclosed type fuse is fixed on the cross-arm of the electric post on the distribution line with the installation gold utensil.
Insulating enclosed type fuse is a kind of indoor fuse.Be the interior sealing cartridge fuse that fills quartz sand filler; Melt fusing when it passes through overload current or short circuit current, the free gas after its metal vapors and the arcing receives the effect of HTHP, sprays into the space between the quartz sand; Contact with quartz sand surface and to receive cooled and solidified; Reduce free gas and the metal vapors of melt evaporation back stay in fossula, thereby made the electric current natural zero-crossing, forced arc extinction.
When melt fused, the backguy of fuse spring was also broken simultaneously, and in bourdon tube, ejected.Top fixed contact (top fixed electrode) and bottom fixed contact (bottom fixed electrode) are set in insulator body, between top fixed contact and bottom fixed contact, fuse unit are installed.In fuse unit, taken in fuse element (melt) and fuse lead-in wire, fuse element fuses when distribution line is flowed through electric current above setting, thus, breaks off distribution line.
One Chinese patent application ZL02285265.4 relates to a kind of fuse, for preventing destruction or the induction of electric shock casualties accident at the environmental impact that suffers salt dust hazard and chemical gas etc., in porcelain pagoda-shaped insulator, fuse is set.Yet; When being fixed in the structure on the electric post cross-arm with the installation gold utensil that is installed on insulator body portion; Be in ground state because gold utensil is installed, therefore, the charging part in insulator body and over the ground between the weakness of distance become the main part of insulator body.For this reason, need act on the stable design that voltage distribution between gold utensil and the fuse is installed.As do not address the above problem, then between installation gold utensil and fuse unit, cause electric field to be concentrated, produce the corona discharge phenomenon.
In addition, in the past, though be fixed with lower cover and lid thereof in the lower ending opening portion of insulator body; But press the hole because of not putting; Press the hole to emit at the instantaneous gases at high pressure of instantaneous generation that can't make of fusing through putting, thereby cause damage, influence its useful life the parts in the fuse.
Have, in the past, the surface leakage of fuse distance between 220-275mm, caused its power-frequency withstand voltage lower usually again, and the live line working fail safe descends.Simultaneously, insulating enclosed type fuse whole height in the past is many about 400-425mm, causes on the fuse of the umbrella skirt construction of common band fin, reaching enough surface leakage distances, makes that its power-frequency withstand voltage is lower.In addition, fuse element (melt) length is many about 200-245mm, causes the live line working fail safe to descend.
Its withstand voltage is received restriction.The 12kv break performance is about Sym.4kA.
[utility model content]
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of mountain font gold utensil that is used for insulating enclosed type fuse is provided.
The purpose of the utility model realizes through following technical scheme:
A kind of mountain font gold utensil that is used for insulating enclosed type fuse; Comprise: the tubular folder hoop that is used for anchor ear, fastening fuse bodies portion; It is characterized in that; Said tubular folder hoop one side that is used for anchor ear, fastening fuse bodies portion is formed with the gold utensil installation portion, is formed with the formula that the slips into hook hole of the hook parts that are used to be hooked on cross-arm or the electric post on the described gold utensil installation portion; Described gold utensil installation portion be shaped as the mountain font.
Form the protrusion board to two sides respectively in said template installation portion outer end, form to form respectively on the protrusion board in this two side and slip into formula hook hole.
The formula that the slips into hook hole opening that on font installation portion outer end, said mountain two sides protrusion board, forms is towards differing; Be formed at the formula that slips into hook hole opening on word installation portion outer end, the said mountain one side protrusion board towards a left side or right direction, be formed at the formula that slips into hook hole opening on the opposite side protrusion board towards above-below direction.
The said installation that is used to be hooked on cross-arm or the electric post uses the hook parts to be bolt.
The said formula hook hole of slipping into is " L " font.
The said formula hook hole opening that slips into is for having " U " font characteristic, and promptly hole, the bottom portion of " L " font has perk to extend.
Compared with prior art, the good effect of the utility model is:
According to the installation gold utensil of the insulating enclosed type fuse of the utility model, can not occur in the problem that produces corona discharge between gold utensil and fuse is installed, can not cause the induction of electric shock accident yet; The installation gold utensil of said insulating enclosed type fuse aligns with through hole with the installation on through hole and the cross-arm to the fixing of fuse, and compounding operation is simple, and labour intensity is little; Operating process can not cause fuse to come off; Damage, and, dismounting, easy for installation.
[description of drawings]
Fig. 1 a is respectively the cutaway view and the bottom view of the utility model shown in the 1b.
Shown in Figure 2 is electric post installation portion sketch map.
Fig. 3 a is respectively the angle steel installation portion front view and the end view of the utility model shown in the 3b.
Fig. 4 is an insulating enclosed type fuse.
Among the figure, 1 is insulating enclosed type fuse, and 2 is the fuse insulator body, and 2a is a fuse insulator body installation portion; 3 for installing gold utensil, and 4 is cross-arm, and 5 are tubular folder hoop; 6 is the anchor clamps installation portion, and 7 are the formula that the slips into hook hole of anchor clamps installation portion, and 8 use bolt for hook.
[embodiment]
Below provide the utility model a kind of embodiment that is used for the mountain font gold utensil of insulating enclosed type fuse.
Embodiment 1
See also accompanying drawing 1a, 1b, 2,3a, 3b, 4; A kind of insulator body 2 of the sealing pagoda-shaped fuse 1 that insulate is formed cylindricly by porcelain, form a plurality of tops lug, nib on the top of insulator body, forms installation portion 2a and a plurality of bottoms lug, nib that gold utensil 3 is installed at its body, forms cylindrical portion in its underpart.
The fuse installation portion that gold utensil is installed is the porcelain wall that is formed at the heavy wall of insulation sealing pagoda-shaped fuse central authorities, and its wall thickness is in the scope of 30-40mm, so that its external diameter and top lug, nib external diameter are roughly the same.
The installation gold utensil comprises: be used for the tubular folder hoop of anchor ear, fastening fuse bodies portion, said tubular folder hoop 5 one sides that are used for anchor ear, fastening fuse bodies portion are formed with anchor clamps installation portion 6, are formed with on the said anchor clamps installation portion and slip into formula hook hole 7.Tubular folder hoop with the pagoda-shaped fuse fastening after, be formed at the tabular anchor clamps installation portion of one of which side, slip into formula hook hole by said " L " font, can be easily, the installation that slips into, be hooked in electric post or cross-arm 4 use hook portion.Go up is that this hook portion is a bolt 8.Then, tighten, be fixed on electric post or the cross-arm with cap nut or bolt.
Said anchor clamps installation portion is a mountain font frame shape,, forms the protrusion board to two sides respectively in said template installation portion outer end that is, forms to form respectively on the protrusion board in this two side and slips into formula hook hole.
And; The formula that the slips into hook hole opening that on said template installation portion outer end two sides protrusion board, forms is towards differing; The formula that the slips into hook hole opening that on said template installation portion outer end one side protrusion board, forms is towards right direction; Being formed at the formula that slips into hook hole opening on the opposite side protrusion board outside lower direction, make the installation gold utensil of the insulating enclosed type fuse of the utility model.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model design; Can also make some improvement and retouching, these improvement and retouching also should be regarded as in the protection range of the utility model.
Claims (5)
1. mountain font gold utensil that is used for insulating enclosed type fuse; Comprise: the tubular folder hoop that is used for anchor ear, fastening fuse bodies portion; It is characterized in that; Said tubular folder hoop one side that is used for anchor ear, fastening fuse bodies portion is formed with the gold utensil installation portion, is formed with the formula that the slips into hook hole of the hook parts that are used to be hooked on cross-arm or the electric post on the described gold utensil installation portion; Described gold utensil installation portion be shaped as the mountain font.
2. a kind of mountain font gold utensil that is used for insulating enclosed type fuse as claimed in claim 1; It is characterized in that; The formula that the slips into hook hole opening that on font installation portion outer end, said mountain two sides protrusion board, forms is towards differing; Be formed at the formula that slips into hook hole opening on word installation portion outer end, the said mountain one side protrusion board towards a left side or right direction, be formed at the formula that slips into hook hole opening on the opposite side protrusion board towards above-below direction.
3. a kind of mountain font gold utensil that is used for insulating enclosed type fuse as claimed in claim 1 is characterized in that the said installation that is used to be hooked on cross-arm or the electric post uses the hook parts to be bolt.
4. a kind of mountain font gold utensil that is used for insulating enclosed type fuse as claimed in claim 1 is characterized in that, the said formula hook hole of slipping into is " L " font.
5. a kind of mountain font gold utensil that is used for insulating enclosed type fuse as claimed in claim 1 is characterized in that, the said formula hook hole opening that slips into is for having " U " font characteristic, and promptly hole, the bottom portion of " L " font has perk to extend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220093383 CN202601543U (en) | 2012-03-13 | 2012-03-13 | Leftwards inclined E-shaped fitting for insulating enclosed type fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220093383 CN202601543U (en) | 2012-03-13 | 2012-03-13 | Leftwards inclined E-shaped fitting for insulating enclosed type fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202601543U true CN202601543U (en) | 2012-12-12 |
Family
ID=47319073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220093383 Expired - Fee Related CN202601543U (en) | 2012-03-13 | 2012-03-13 | Leftwards inclined E-shaped fitting for insulating enclosed type fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202601543U (en) |
-
2012
- 2012-03-13 CN CN 201220093383 patent/CN202601543U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20200313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |