CN101286412A - Straight-through current transformer for measuring voltage by penetrating wire wrapper - Google Patents
Straight-through current transformer for measuring voltage by penetrating wire wrapper Download PDFInfo
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- CN101286412A CN101286412A CNA2008100742561A CN200810074256A CN101286412A CN 101286412 A CN101286412 A CN 101286412A CN A2008100742561 A CNA2008100742561 A CN A2008100742561A CN 200810074256 A CN200810074256 A CN 200810074256A CN 101286412 A CN101286412 A CN 101286412A
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- 230000000149 penetrating effect Effects 0.000 title 1
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 10
- 239000004020 conductor Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 241000397426 Centroberyx lineatus Species 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The invention provides a feed through current transformer which uses a puncturing method to get voltage from a wrapped wire, and relates to a transformer; aiming at the problems of complex operation, easy electricity-theft under the low efficiency and larger occupy space in the existing mode of getting voltage by peeling the sheath, the invention provides a feed through current transformer which uses a puncturing method to get voltage from a wrapped wire, and comprises a transformer body (1), which is provided with a wiring terminal (2) of a voltage wire and a part (3) for getting the voltage which have connection relation; the part (3) for getting the voltage has a sharp front end which can pierce the insulated sheath of a bus conveniently and contact with a metal core, thus realizing the purpose of getting voltage. The current transformer of the invention has simple structure, small occupy space, low cost and fast mode of getting voltage, and can greatly improve the working efficiency; at the same time, the connection of the part for getting voltage and the bus is stable, getting voltage is precise and reliable and the condition of electricity-theft is avoided effectively, thereby being beneficial to promotion and application.
Description
Technical field
The present invention relates to a kind of instrument transformer.
Background technology
Now in the many straight-through current transformers that use, voltage signal will obtain from the bus that is exposed to the outside, for bus insulated hull is arranged, then need to press by the mode power taking of strip off bus insulation skin, there is the inefficient drawback of complicated operation in this power taking pressure mode, and electricity filching person often takes to remove or cut off the way of lead, make voltage signal can not enter electric energy meter, it is the tie point of loosening pressure-wire and bus that some electricity filching person is taked the latent stealing electricity method of suppressing, thereby perhaps fill in mode such as insulating bodies reduces voltage measurement to realize stealing in the junction of tie point and bus, in addition, electricity filching person is also taked to be connected in series load and is realized that stealing and control voltage reduce before wiring point, therefore in the practical application, for fear of the lawless person by above-mentioned means stealing, metrological service often is sealed in current transformer and the power taking equipment of pressing in the batch meter jointly, but because triple line need enter casing and connect current transformer respectively and difference power taking pressure, therefore just need to accommodate the chest of inlet wire cable and at least three current transformers and power taking pressure equipment when sealing, this is unfavorable for depositing and managing with regard to making batch meter not only have bigger volume, and its manufacturing cost is also high simultaneously.
Summary of the invention
Mode at present peeling and taking voltage exists complicated operation, inefficiency and easily stealing, bigger problem takes up room, the invention provides a kind of current transformer, it is by carrying out innovative design to the current transformer structure, can obtain voltage signal easily, and solve present power taking pressure mode admirably and have easy stealing, inefficient problem.
It is realized by following scheme:
A kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage, it comprises the instrument transformer body of being with center hole, pressure-wire binding post and power taking pressure part with electrical connection is set respectively on the described instrument transformer body, but relative motion and power taking pressure part has the front end of spine between the center hole of described power taking pressure part and instrument transformer body.Particularly, the spine front end of described power taking pressure part is one group of front end with needle-like or laciniation, thereby the spine front end can conveniently puncture behind the insulated hull of bus and the metal-cored purpose that realizes that power taking is pressed that contacts; Make the purpose of relative motion between power taking pressure part and the instrument transformer body be that instrument transformer can adapt to the purpose that the bus power taking of different model is pressed.
The metallic stud that has been threaded on the described instrument transformer body, described metallic stud has the front end of spine and has electrical connection with the pressure-wire binding post.
The metallic stud that has been threaded on the described instrument transformer body, described metallic stud and pressure-wire binding post have electrical connection, and the front end of described metallic stud is provided with the power taking pressure part that is electrically connected with it.
Preferably, be fixed with metal insert on described instrument transformer body, described metal insert is electrically connected with the pressure-wire binding post; Described metallic stud is threaded with metal insert, and described metallic stud can radially move along center hole.
More preferably, around center hole, at least two metal inserts are set on the instrument transformer body, are electrically connected between all metal inserts, metallic stud all has been threaded on each metal insert.The power taking pressure part is passed the voltage signal on the bus better.
Simultaneously, it also comprises anti-electricity-theft face shield No. one, and a described anti-electricity-theft face shield is connected by non-disconnectable mode with the surface of instrument transformer body.
Perhaps, be connected by removable mode between anti-electricity-theft face shield and the instrument transformer body; A described anti-electricity-theft face shield is at least two, connects by non-disconnectable mode between adjacent two anti-electricity-theft face shields.
In addition, the terminals place of described instrument transformer is provided with No. two anti-electricity-theft face shields that are connected with the instrument transformer body, and an end of No. two anti-electricity-theft face shields is fixedlyed connected with the instrument transformer body, and the other end is provided with the cabling mouth.
Preferably, be connected with bellows at the cabling mouth place of No. two anti-electricity-theft face shields by the box joint.
Power taking pressure part on the instrument transformer of the present invention is provided with the spine front end, the insulated hull that just can utilize during by the punching instrument transformer spine front end of power taking pressure part to puncture bus at bus comes power taking to press, use the instrument transformer of this structure not need again on bus the external voltage line and be connected power taking and press equipment, therefore provide cost savings, reduced the occupation of land space, owing to use simply, so also reduced operating personnel's workload, be convenient to management, improved operating efficiency; Power taking pressure part of the present invention is set on current transformer, has avoided the electricity filching person private to connect load again and reduce metering, also avoided electricity filching person to reduce metering, therefore have anti-electricity-theft effect voltage by the loosening pressure-wire tie point that connects to voltage.
Anti-electricity-theft face shield each other or with the instrument transformer body between be connected by non-disconnectable mode, it both can realize the optimization of anti-stealing electricity function, conveniently used again and managed.Owing to be to connect by non-disconnectable mode, after cover body and instrument transformer body are fixed in other words, can not open by failure mode, seal the drawback that is easy to be forged with respect to present lead sealing mode, the connection of non-disconnectable mode of the present invention has avoided electricity filching person to open cover body better, has therefore avoided the generation of stealing better; The more important thing is that on the instrument transformer body, like this, instrument transformer just can not be placed in the batch meter, can be arranged on any position as required during use with anti-electricity-theft face shield overall fixed, therefore improved flexibility and fail safe on instrument transformer uses.
Anti-electricity-theft face shield is set No. two at the terminals place, and No. two anti-electricity-theft face shields can be avoided electricity filching person to juggle things at instrument transformer binding post place and carry out stealing.
To sum up, current transformer of the present invention can directly be pressed the bus power taking that insulated hull is arranged, and it has avoided the generation of stealing situation effectively, and the present invention is simple in structure, it is little to take up room, cost is low, and is safe, and power taking presses mode simple and direct so can greatly increase work efficiency, simultaneously, the power taking pressure part is connected stable with bus, power taking is pressed accurately reliable, therefore is beneficial to and applies.
Description of drawings
Fig. 1 is the front view that the instrument transformer structure of lead 10 has been installed;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the left view of Fig. 1;
Fig. 5 is the perspective view that the instrument transformer of lead 10 has been installed;
Fig. 6 is the structural representation at power taking pressure part 3 places;
Fig. 7 is the instrument transformer structural representation that lead is not set;
Fig. 8 is the instrument transformer cutaway view;
Fig. 9 is the embodiment 3 described instrument transformer structural representations that are provided with an anti-electricity-theft face shield 5;
Figure 10 is embodiment 3 described anti-electricity-theft face shields 5 and instrument transformer body 1 syndeton blast diagrammatic sketch;
Figure 11 is the syndeton schematic diagram between embodiment 3 described anti-electricity-theft face shields 5 and the instrument transformer body 1;
Figure 12 is embodiment 4 described anti-electricity-theft face shields 5 and instrument transformer body 1 syndeton blast diagrammatic sketch;
Figure 13 is embodiment 4 described anti-electricity-theft face shields 5 and instrument transformer body 1 syndeton schematic diagram;
Figure 14 is embodiment 5 described No. two anti-electricity-theft face shields 6 and instrument transformer body 1 syndeton blast diagrammatic sketch;
Figure 15 is embodiment 5 described No. two anti-electricity-theft face shields 6 and instrument transformer body 1 syndeton schematic diagram;
Figure 16 is the structure cut-away view that the housing of embodiment 6 described cables and instrument transformer body 1 is cast into one;
Figure 17 is the structural representation that the housing of embodiment 6 described cables and instrument transformer body 1 is cast into one;
Figure 18 is the structure cut-away view that the housing of embodiment 6 described bellowss and instrument transformer body 1 is cast into one;
Figure 19 is that the housing of embodiment 6 described bellowss and instrument transformer body 1 is cast into the unitary whole structural representation.
Wherein: instrument transformer body 1, center hole 1-1, metal insert 1-2, card 1-3, projection 1-4, pressure-wire binding post 2, power taking pressure part 3, metal blocks 3a, 4, numbers anti-electricity-theft face shields 5 of metallic stud, shackle member 5-1, the shackle member 51-1 on 51, numbers cover bodies of a cover body, card 52-1 on 52, No. two cover bodies of No. two cover bodies, No. two anti-electricity-theft face shields 6, cabling mouth 6-1, the shackle member 61-1 on 61, numbers cover bodies of a cover body, card 62-1 on 62, No. two cover bodies of No. two cover bodies, box joint 7, connecting portion 7-1, bellows 8, electric current line binding post 9, be surrounded by the lead 10 of insulating barrier, slide block 11, chute 12, groove 13, cable 14, conductor 15.
Embodiment
Set forth the preferred embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment 1:
A kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage, referring to figs. 1 through Fig. 5, it comprises the instrument transformer body 1 of band center hole 1-1, pressure-wire binding post 2 and power taking pressure part 3 with electrical connection is set respectively on the described instrument transformer body 1, and this annexation comprises any electrical connection of the prior art.The described power taking pressure part 3 of present embodiment has the front end of spine, the instrument transformer of this kind structure can be applied on the lead 10 that is surrounded by insulated hull, described spine front end can puncture the insulated hull of lead 10, thereby makes the interior wire of power taking pressure part 3 and insulated hull be electrically connected the extraction that realizes the wire voltage signal.
Particularly; the spine front end of described power taking pressure part is one group of front end with needle-like or laciniation composition; be understandable that; by having the front end that needle-like or laciniation are formed; its profile is not limit; it can be the front end that has only a point; also can form semicircular front end by the needle point or the sawtooth of different length; as shown in Figure 6; thereby just can contact the effect that guarantees that power taking is pressed well with round conductor; certainly can also be at the lead of different profiles and the front end outer shape of different power taking pressure parts is set; as long as can realize that the needle point of power taking pressure part or sawtooth puncture wire insulation and come power taking to press, all at the protection range of this patent.And power taking pressure part 3 has the front end of spine.
Especially, but relative motion between the center hole of described power taking pressure part 3 and instrument transformer body 1.Be appreciated that power taking pressure part 3 with respect to the direction of motion of instrument transformer body 1 should be, under the motionless situation of instrument transformer body 1, power taking pressure part 3 is to the motion of the center of circle of instrument transformer center hole 1-1 direction, thereby moves closer to the lead 10 that passes instrument transformer.Make the purpose of relative motion between power taking pressure part 3 and the instrument transformer body 1 be that instrument transformer can adapt to the purpose that the lead power taking of different model is pressed.
Control power taking pressure part 3 realizes that the mode and the structure of relative motion are a lot of on the instrument transformer body, such as, at hinged two the semicircular snap rings in the edge or centre position of instrument transformer center hole, inner ring at snap ring is provided with needle-like or laciniation, realizes that by the closure of controlling two snap rings the spine front end thrusts the insulated hull of lead.Perhaps, can utilize the motion of the existing structure realization power taking pressure part 3 of instrument transformer body, such as, the metallic stud 4 that has been threaded on instrument transformer body 1, described metallic stud 4 have the front end of spine and have electrical connection with pressure-wire binding post 2.Then metallic stud 4 on the instrument transformer body when center hole direction spiral advances, realize and being electrically connected of the interior metal wire of bus thereby its spine front end just can puncture the insulating barrier of bus.Therefore, this metallic stud 4 is exactly the described power taking pressure part 3 of this patent.
Preferably, metallic stud 4 has been threaded on the described instrument transformer body 1, described metallic stud 4 has electrical connection with pressure-wire binding post 2, and described metallic stud 4 has the flat-top front end, the power taking pressure part 3 that is electrically connected with it in the front end setting of described metallic stud 4.With reference to Fig. 7, at the front end of metallic stud 4 the metal blocks 3a of a front end band needle point group or sawtooth group is set, metal blocks 3a is exactly a power taking pressure part 3, and this block can be connected by removable mode with metallic stud 4, also can not be connected with double-screw bolt 4.
When not connecting, only need in use metal blocks 3a is placed on metallic stud 4 front ends, when double-screw bolt screws bus fixedly, point on its front end metal blocks 3a can thrust bus realizes conducting, for this situation, preferably with the metal blocks 3a of metallic stud junction on be provided with the metallic stud front end suitable groove, can be that basic point promotes metal blocks and advances to realize the location to metal blocks 3a with the groove when advancing in the metallic stud rotation like this.
Situation for metal blocks is connected with metallic stud preferably connects by removable mode, like this, block can be taken off under the situation of not destroying the metallic stud self structure, makes things convenient for instrument transformer to be applied to the occasion that does not need the peronium power taking to press.
Embodiment 2:
For getting voltage condition by metallic stud 4 as conductor, preferred structure is, fixing metal inserts 1-2 on described instrument transformer body 1, and described metal insert 1-2 is electrically connected with pressure-wire binding post 2; Described metallic stud 4 is threaded with metal insert 1-2, and described metallic stud 4 can radially move along center hole.
More preferably structure is, on instrument transformer body 1, around center hole 1-1, two metal insert 1-2 are set,, are electrically connected by conductor 15 between all metal insert 1-2 with reference to Fig. 7, with reference to Fig. 8, the conductor 15 of present embodiment is a sheet metal, can certainly use lead to be electrically connected.The metallic stud 4 that all has been threaded on each metal insert 1-2, like this, the power taking pressure part of both direction thrusts bus with the tip simultaneously, make be electrically connected stable more and accurately, thereby better the voltage signal on the bus is passed.
What can expect is; in actual applications; metallic stud is not limited to two recited above; it also can be one, three, four or more; fixed form between metallic stud and the instrument transformer also is not limited to be fixed on the metal insert; when the instrument transformer structure changes and when not re-using metal insert, other any modes that metallic stud is fixed on the instrument transformer also all can realize the described purpose of this patent, therefore all should be within protection scope of the present invention.
On above-mentioned power taking laminated structure, the present invention also comprises anti-electricity-theft cover, should be used for realizing integral protection to stealing by anti-electricity-theft cover.
Anti-electricity-theft cover above the instrument transformer nearly all is a case now, several instrument transformers together are placed on lead sealing then in the chest together with electric energy meter, the problem that its exists at first is, the lead sealing on the casing is as easy as rolling off a log destroyed and easily by imitated, therefore power-steeling preventing effect and bad in fact; Also have, just must open chest when the user need overhaul circuit, this just needs a lot of departments to show up, and this is unfavorable for operating in actual applications; In addition, because instrument transformer is limit by casing, for anti-electricity-theft its can only be installed in the fixed position, the user who is not suitable for the diverse location condition uses, and casing must just can hold a plurality of instrument transformers, electric energy meter and numerous lines very greatly, therefore be unfavorable for installation, wiring and management, and cost is very high.Therefore, on embodiment 1 and embodiment 2 described power taking laminated structures, the present invention also comprises anti-electricity-theft face shield, by anti-electricity-theft face shield should be used for realizing integral protection to stealing, concrete structure is with reference to following embodiment.
Embodiment 3:
Be with the existing structure difference, the described anti-electricity-theft face shield 5 of present embodiment is connected by non-disconnectable mode with the surface of instrument transformer body 1, as can be seen, the anti-electricity-theft face shield that present embodiment limited is fixed on the instrument transformer body, like this, instrument transformer just can be taken any position and uses and be not limited in the chest.Be connected by non-disconnectable mode between this face shield and the instrument transformer body, that is to say, after metrological service is fixed to anti-electricity-theft face shield on the instrument transformer, just face shield can't be taken off above instrument transformer without destroying, electricity filching person just can't be hoodwinked people and be carried out stealing like this, thereby can increase the degree of protection to stealing widely.
With reference to Fig. 9 to Figure 11, this non-disconnectable syndeton is, it is as a whole to be positioned at the anti-electricity-theft face shield of No. of instrument transformer one side surface 5, No. one anti-electricity-theft face shield 5 is provided with card and/or shackle member 5-1, and described instrument transformer body 1 is provided with and card and/or suitable shackle member and/or the card 1-3 of shackle member.Like this, can realize that by the card and the clamping of shackle member anti-electricity-theft face shield is connected with the non-disconnectable of instrument transformer.
Described anti-electricity-theft face shield 5 and on shackle member can make of engineering plastics or transparent engineering plastics, at the instrument transformer surface of shell a plurality of card are set, because the instrument transformer housing generally all is to be made by the good plastics of toughness, therefore just can't take off without destroying after snapping onto anti-electricity-theft face shield 5 on the instrument transformer housing, and then prevented stealing, can destroy anti-electricity-theft face shield when simultaneously, metrological service need overhaul and be unlikely to destroy instrument transformer.
For as described in present embodiment, being provided with anti-electricity-theft face shield at the instrument transformer body surface, the fixed block of tape punching can be set in the rear end of metallic stud, avoid the loosening of metallic stud by in the perforation of fixed block, inserting pin, can not be worn pin for limitting, can directly screw be hammered on the instrument transformer body with rivet by the instrument transformer body construction.
Embodiment 4:
The present embodiment difference from Example 3 is, the another kind of structure that instrument transformer body 1 and anti-electricity-theft face shield 5 are connected by non-disconnectable mode is provided.
An anti-electricity-theft face shield 5 that is positioned at instrument transformer body 1 one sides comprises two cover bodies, has between two cover bodies of annexation to connect by non-disconnectable mode, and the structure optimization that non-disconnectable mode connects is, with reference to Figure 12, Figure 13:
An anti-electricity-theft face shield 5 comprises that a cover body 51 and 52, numbers cover bodies 51 of No. two cover bodies are provided with shackle member 51-1, and No. two cover body 52 is provided with the suitable card 52-1 with shackle member 51-1; Shackle member 51-1 on the described cover body 51 inserts in No. two card 52-1 on the cover body and realizes that clamping connects;
Be appreciated that described shackle member 51-1 of present embodiment and card 52-1 are not limited to two of the sides shown in Figure 12, also can be set to any amount according to actual needs.Be understandable that the quantity of shackle member 51-1 and card 52-1 is many more, connect firm more.
Fig. 9, Figure 10, Figure 12, an anti-electricity-theft face shield 5 shown in Figure 13 all are two, be fixedly installed on respectively on the surface of instrument transformer body 1 both sides, certainly can expect that a side surface at instrument transformer is provided with anti-electricity-theft face shield 5 No. one as required in use.
Be connected by removable mode between an above-mentioned anti-electricity-theft face shield 5 and the instrument transformer body 1; The structure optimization that removable mode connects is, with reference to Figure 12:
All be fixed with chute and/or slide block 11 on a cover body 51 and No. two cover bodies 52, on the described instrument transformer body 1 with the corresponding section of a cover body 51 and No. two cover bodies 52, be fixed with slide block and/or the chute 12 suitable respectively with chute and/or slide block 11, the shape of cross section of described chute 12 is up-small and down-big, such as swallow-tail form, inverse-T-shaped or " L " shape, certainly, this cross sectional shape is not limited to described three kinds, use needs as long as satisfy, the protection range that all belongs to this patent, described up-small and down-big structure can guarantee that a cover body 51 fixedlys connected with instrument transformer body 1 respectively with No. two cover bodies 52; In practical operation, can respectively a cover body 51 and No. two cover bodies 52 be slipped into from slide block and/or chute 12 on the instrument transformer body 1 by chute and/or slide block 11, after cover body 51 and No. two cover bodies 52 fasten, flanging all is stuck on the housing of instrument transformer body 1, further play the effect that relative motion takes place between restriction cover body and the instrument transformer body 1, and be connected to one by shackle member and card, and form non-disconnectable the connection between the instrument transformer body 1.
Embodiment 5:
Anti-electricity-theft also the needs protects the instrument transformer binding post, therefore, is that with embodiment 1-4 difference present embodiment provides a kind of structure that prevents from the instrument transformer terminals are carried out stealing.
An end that is provided with 6, No. two anti-electricity-theft face shields 6 of No. two anti-electricity-theft face shields at the terminals place of instrument transformer body 1 is fixedlyed connected with instrument transformer body 1, and the other end is provided with a cabling mouth 6-1.
Preferred structure is, with reference to Figure 14, Figure 15, described No. two anti-electricity-theft face shields 6 comprise between cover body 61 and 62, numbers cover bodies 61 of No. two cover bodies and No. two cover bodies 62 and connecting by non-disconnectable mode.Non-disconnectable mode syndeton is preferably: No. one cover body 61 is provided with shackle member 61-1, and No. two cover body 62 is provided with the suitable card 62-1 with shackle member 61-1; Shackle member 61-1 on the described cover body 61 inserts in No. two card 62-1 on the cover body and realizes that clamping connects;
No. two anti-electricity-theft face shield 6 is preferably with instrument transformer body 1 fixed connection structure: the outer surface of the secondary connection end of instrument transformer body 1 is provided with protruding 1-4, be respectively arranged with the groove 13 suitable with protruding 1-4 on the inwall of a described cover body 61 and No. two cover bodies 62, groove 13 is installed on the protruding 1-4.Preferably, described protruding 1-4 is an annular projection.
More preferably, cabling mouth 6-1 place at No. two anti-electricity-theft face shields 6 is connected with bellows 8 by box joint 7, the outside dimension of the internal diameter size of cabling mouth 6-1 and the connecting portion 7-1 of box joint 7 is suitable, and the connecting portion 7-1 of box joint 7 is installed in the cabling mouth 6-1 and the nut by box joint 7 is fastenedly connected.
Embodiment 6:
Present embodiment is different with embodiment 5, and it provides the another kind of structure that prevents from the instrument transformer terminals are carried out stealing.
With reference to Figure 16, Figure 17, it comprises the cable 14 that an end is electrically connected with the internal interface line end of instrument transformer body 1; The housing of the insulated hull of described cable 14 appearances and the instrument transformer body 1 of secondary connection end is cast into one.
Preferably, with reference to Figure 18, Figure 19, it also comprises the bellows 8 that is sleeved on cable 14 outsides, and described bellows 8 also is cast into one with the housing of the instrument transformer body 1 of secondary connection end.
The insulation sheath of the described cable 14 of present embodiment and the housing of instrument transformer body 1 are cast into one, electric current contact and voltage contact all are arranged in the housing of instrument transformer body 1, replaced lead sealing, be specially adapted to determine in the engineering of cable length, can protection against the tide, waterproof, anti-electricity-theft; Have rational in infrastructure, reliable, convenient and quick construction, advantage with low cost.
Because cable is walked at the cabling mouth 6-1 place of embodiment 5 described No. two anti-electricity-theft face shields 6, in conjunction with the embodiments 5 and embodiment 6 can expect that No. two anti-electricity-theft face shields 6 and cable can be cast into one and use simultaneously, still can realize the purpose of this patent preferably; Certainly it will also be appreciated that the bellows that is sleeved on the cable outside can be cast into one with No. two anti-electricity-theft face shields 6 equally, therefore all should be in protection scope of the present invention.
Need to prove that straight-through current transformer model of the present invention does not need to limit, the structure of himself does not need to limit yet, so long as the punching instrument transformer can pass through the described purpose of this patent, and promptly should be in protection scope of the present invention.In addition; above the described structure of each embodiment just exemplary illustration that the present invention did is not limited its protection range yet; those skilled in the art can do some to structure of the present invention according to the described scheme of present embodiment fully and change to realize identical purpose; for the change of doing according to scheme of the present invention so long as just available without creative work; all be considered as the replacement that is equal to this patent, all should be within the protection range of this patent.
Claims (17)
1. straight-through current transformer that utilizes piercing method to wire wrapper voltage, it comprises the instrument transformer body (1) of being with center hole, pressure-wire binding post (2) and power taking pressure part (3) with electrical connection is set respectively on the described instrument transformer body (1), it is characterized in that described power taking pressure part (3) and instrument transformer body (1) but center hole between relative motion and power taking pressure part (3) have the front end of spine.
2. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 1, it is characterized in that the metallic stud (4) that has been threaded on the described instrument transformer body (1), described metallic stud (4) has the front end of spine and has electrical connection with pressure-wire binding post (2).
3. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 1, it is characterized in that the metallic stud (4) that has been threaded on the described instrument transformer body (1), described metallic stud (4) has electrical connection with pressure-wire binding post (2), and the front end of described metallic stud (4) is provided with the power taking pressure part (3) that is electrically connected with it.
4. according to claim 2 or 3 described a kind of straight-through current transformers that utilize piercing method to wire wrapper voltage, it is characterized in that being fixed with on the described instrument transformer body (1) metal insert (1-2), described metal insert (1-2) is electrically connected with pressure-wire binding post (2); Described metallic stud (4) is threaded with metal insert (1-2), and described metallic stud (3a) can radially move along center hole.
5. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 4, it is characterized in that around center hole (1-1), instrument transformer body (1) is gone up at least two metal inserts (1-2) is set, be electrically connected between all metal inserts (1-2), metallic stud (4) all has been threaded on each metal insert.
6. according to claim 1,2 or 3 described a kind of straight-through current transformers that utilize piercing method to wire wrapper voltage, it is characterized in that described spine front end is one group of front end with needle-like or laciniation.
7. according to claim 1,2 or 3 described a kind of straight-through current transformers that utilize piercing method to wire wrapper voltage, it is characterized in that also comprising an anti-electricity-theft face shield (5), a described anti-electricity-theft face shield (5) is connected by non-disconnectable mode with the surface of instrument transformer body (1).
8. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 7, it is characterized in that a described anti-electricity-theft face shield (5) is provided with card and/or shackle member (5-1), described instrument transformer body (1) is provided with and card and/or suitable shackle member and/or the card (1-3) of shackle member.
9. according to claim 1,2 or 3 described a kind of straight-through current transformers that utilize piercing method to wire wrapper voltage, it is characterized in that also comprising an anti-electricity-theft face shield (5), be connected by removable mode between an anti-electricity-theft face shield (5) and the instrument transformer body (1);
A described anti-electricity-theft face shield (5) comprises at least two cover bodies, has between two cover bodies of annexation to connect by non-disconnectable mode.
10. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 9 is characterized in that:
The concrete structure that connects by non-disconnectable mode between two cover bodies is:
A described anti-electricity-theft face shield (5) comprises a cover body (51) and No. two cover bodies (52), and a cover body (51) is provided with shackle member (51-1), and No. two cover bodies (52) are provided with and the suitable card (52-1) of shackle member (51-1); Shackle member (51-1) on the described cover body (51) is inserted in No. two card (52-1) on the cover body and is realized that clamping connects;
The concrete structure that is connected by removable mode between an anti-electricity-theft face shield (5) and the instrument transformer body (1) is:
All be fixed with chute and/or slide block (11) on a described cover body (51) and No. two cover bodies (52), described instrument transformer body (1) is gone up the corresponding section with a cover body (51) and No. two cover bodies (52), be fixed with respectively and chute and/or suitable slide block and/or the chute (12) of slide block (11), the shape of cross section of described chute (12) is up-small and down-big.
11. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 10 is characterized in that a described anti-electricity-theft face shield (5) is two, is fixedly installed on respectively on the surface of instrument transformer body (1) both sides.
12. according to claim 1,2 or 3 described a kind of straight-through current transformers that utilize piercing method to wire wrapper voltage, the terminals place that it is characterized in that described instrument transformer body (1) is provided with No. two anti-electricity-theft face shields (6), one end of No. two anti-electricity-theft face shields (6) is fixedlyed connected with instrument transformer body (1), and the other end is provided with a cabling mouth (6-1).
13. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 12, it is characterized in that described No. two anti-electricity-theft face shields (6) comprise a cover body (61) and No. two cover bodies (62), connect by non-disconnectable mode between a cover body (61) and No. two cover bodies (62).
14. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 13, it is characterized in that a cover body (61) is provided with shackle member (61-1), No. two cover bodies (62) are provided with and the suitable card (62-1) of shackle member (61-1); Shackle member (61-1) on the described cover body (61) is inserted in No. two card (62-1) on the cover body and is realized that clamping connects;
The outer surface of the secondary connection end of described instrument transformer body 1 is provided with projection (1-4), be respectively arranged with on the inwall of a described cover body (61) and No. two cover bodies (62) and projection (1-4) suitable groove (13), groove (13) is installed on the projection (1-4).
15. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 12, the cabling mouth (6-1) that it is characterized in that described No. two anti-electricity-theft face shields (6) is located to be connected with bellows (8) by box joint (7), the outside dimension of the connecting portion (7-1) of the internal diameter size of cabling mouth (6-1) and box joint (7) is suitable, and the connecting portion (7-1) of box joint (7) is installed in the cabling mouth (6-1) and the nut by box joint (7) is fastenedly connected.
16., it is characterized in that it also comprises the cable (14) that an end is electrically connected with the internal interface line end of instrument transformer body (1) according to claim 1,2 or 3 described a kind of straight-through current transformers that utilize piercing method to wire wrapper voltage; The housing of the insulated hull of described cable (14) appearance and the instrument transformer body (1) of secondary connection end is cast into one.
17. a kind of straight-through current transformer that utilizes piercing method to wire wrapper voltage according to claim 16, it is characterized in that it also comprises the bellows (8) that is sleeved on cable (14) outside, described bellows (8) also is cast into one with the housing of the instrument transformer body (1) of secondary connection end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100742561A CN101286412B (en) | 2007-02-02 | 2008-02-01 | Straight-through current transformer for measuring voltage by penetrating wire wrapper |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100514645A CN101034101A (en) | 2007-02-02 | 2007-02-02 | Straight-through current transformer for taking voltage from wrapping conductor using puncturing method |
| CN200710051464.5 | 2007-02-02 | ||
| CN2008100742561A CN101286412B (en) | 2007-02-02 | 2008-02-01 | Straight-through current transformer for measuring voltage by penetrating wire wrapper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101286412A true CN101286412A (en) | 2008-10-15 |
| CN101286412B CN101286412B (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100514645A Pending CN101034101A (en) | 2007-02-02 | 2007-02-02 | Straight-through current transformer for taking voltage from wrapping conductor using puncturing method |
| CN2008100742561A Active CN101286412B (en) | 2007-02-02 | 2008-02-01 | Straight-through current transformer for measuring voltage by penetrating wire wrapper |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100514645A Pending CN101034101A (en) | 2007-02-02 | 2007-02-02 | Straight-through current transformer for taking voltage from wrapping conductor using puncturing method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101034101A (en) | 2007-09-12 |
| CN101286412B (en) | 2012-03-07 |
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Denomination of invention: A Through Core Current Transformer Using Puncture Method to Measure the Voltage of Sheathed Conductors Effective date of registration: 20230331 Granted publication date: 20120307 Pledgee: Bank of China Limited Wuhan Hanyang sub branch Pledgor: HUBEI SHENGJIA WIRING Co.,Ltd. Registration number: Y2023420000144 |
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