CN101034100A - Straight-through current transformer capable of conveniently taking voltage - Google Patents
Straight-through current transformer capable of conveniently taking voltage Download PDFInfo
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- CN101034100A CN101034100A CNA2007100514611A CN200710051461A CN101034100A CN 101034100 A CN101034100 A CN 101034100A CN A2007100514611 A CNA2007100514611 A CN A2007100514611A CN 200710051461 A CN200710051461 A CN 200710051461A CN 101034100 A CN101034100 A CN 101034100A
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Abstract
This invention relates to a straight-through current transformer which can take voltage easily. The invention set voltage-wire leading-out terminal (2) and voltage taking assembly ( 3) on the transformer noumenon ( 1), and each other possess electric interlock relation. The voltage taking assembly set up at one side of whole core (1-1), and can do radial movement follow hole core. This invention use existing metal embeds piece structure of current transformer, directly connect it with pressure-wire leading-out terminal, to realize purpose of taking voltage. the voltage taking mode is shortcut and not easy occur electric larceny, at the same time, the joining between stud and wire is stable.
Description
Technical field
The present invention relates to a kind of mutual inductor.
Background technology
Now in the many straight-through current transformers that use, the output of no-voltage signal, voltage signal will obtain from the mutual inductor corresponding bus lines, it exist connection line complexity, measuring cost high-level efficiency low, be not easy anti-electricity-theft drawback.
Baoding triumphant space Electrical Appliances Co., Ltd has produced a kind of LDF1-0.66 guide rod through type current transformer, this is a kind of current transformer that can output voltage signal, it is a sheet metal of fixing a band center pit on the hollow surface of punching mutual inductor, leading-out terminal place at mutual inductor is provided with the pressure-wire terminal, in mutual inductor inside sheet metal is connected with the pressure-wire outlet terminal.Center pit with sheet metal during use is enclosed within on the guide rod of transformer, by screw bolt on guide rod mutual inductor is fixed, and the bolt that screws simultaneously can make sheet metal be connected closely with guide rod.Though the mutual inductor of this kind structure can be with the pressure-wire outlet terminal of the voltage transmission on the transformer guide rod to the mutual inductor, but, electricity filching person can be easily influences power taking and presses influence metering thus by unscrewing bolt or fill in mode such as insulant between sheet metal and guide rod; Perhaps electricity filching person unscrews after the bolt in the mutual inductor bottom and to connect load by lead and realize that electricity consumption do not measure, and therefore the mutual inductor of this structure is unfavorable for anti-electricity-theft very much.
ZL03265974.1 discloses a kind of anti-electricity-theft bus type current transformer, it is by loam cake, following box, secondary coil, two current signal lines on the secondary coil are formed, on covered set bolt, its main points are down to have in the box a little copper bar, connect a voltage signal line on the little copper bar, there is the threaded hole that is complementary with set bolt little copper bar upper end, after loam cake tightens up with following box, set bolt passes little copper bar threaded hole and withstands on the busbar, when fixing mutual inductor, voltage signal transferred to little copper bar, and voltage signal is caused electric energy meter by the voltage signal line that connects on the little copper bar.The problem that the mutual inductor of this kind structure exists is, owing to be to utilize set bolt and little copper bar acting in conjunction could transmit voltage signal on the busbar, so complex structure, it is higher to be not easy making and cost; Little copper bar is arranged in the mutual inductor box body, occupied valuable mutual inductor central space, so mutual inductor must have bigger volume; This patent is by set bolt and little copper bar transfer overvoltage signal, though voltage signal is gone out by the mutual inductor internal transmission, but outside set bolt is still and is exposed to, electricity filching person still can influence measurement to voltage by loosening this set bolt, does not therefore have substantial anti-electricity-theft meaning.
Summary of the invention
At existing straight-through current transformer have complex structure, the cost-effective rate is low and be not easy anti-electricity-theft drawback, the invention provides a kind of current transformer, it is to press signal wire to be fixed on the inside of current transformer power taking, by existing current transformer is carried out the innovative design of structure, can realize conveniently taking voltage preferably and can effectively prevent the purpose of stealing.
It is realized by following scheme:
A kind of straight-through current transformer of conveniently taking voltage, it comprises the mutual inductor body 1 with center hole 1-1, the pressure-wire outlet terminal 2 and the power taking pressure part 3 that have electrical connection mutually are set on the described mutual inductor body 1, described power taking pressure part 3 is arranged on the side of center hole 1-1, and power taking pressure part 3 can radially move along center hole 1-1.Like this, the power taking pressure part can not occupy the valuable center hole position of walking bus, and therefore, the mutual inductor of this structure can be applied to the power taking of metal row or transformer guide rod is pressed the needs of signal.
Preferably, described power taking pressure part 3 is and the metallic stud 3a of mutual inductor body 1 by thread connection, has advantage of simple structure.
Preferably, described mutual inductor body 1 is provided with metal insert 4, the metallic stud 3a that has been threaded on the described metal insert 4, and described metal insert 4 is electrically connected with pressure-wire outlet terminal 2, has the advantage of handled easily.
More preferably, described metal insert 4 is at least two and be arranged on the surface of mutual inductor body 1 around center hole 1-1, is electrically connected between all metal inserts 4, and metallic stud 3a all has been threaded on each metal insert 4.Connect a double-screw bolt on a plurality of metal inserts respectively, a plurality of double-screw bolts can make the voltage signal of collection more stable, and can better mutual inductor be fixed on conducting rod, lead or the metal row.
Carrying out relative position by lead sealing between described metallic stud 3a and the mutual inductor body 1 fixes.
Preferably, also comprise nut 5, the side of described nut 5 is provided with the hole, and the hole is provided with the internal thread that matches with double-screw bolt 3a front end.Nut 5 is spun on the threaded hole that again double-screw bolt is screwed in nut 5 sides on conducting rod, lead or the metal row, can avoids loose bolt and influence collection voltage signal.
Especially, also comprise anti-electricity-theft face shield 6 No. one, a described anti-electricity-theft face shield 6 is connected by non-disconnectable mode with the surface of mutual inductor body 1.Preferred non-disconnectable mode syndeton is: No. one anti-electricity-theft face shield 6 is provided with card and/or shackle member 6-1, and mutual inductor body 1 is provided with and card and/or suitable shackle member and/or the card 1-2 of shackle member.
Perhaps, comprise that also 6, numbers anti-electricity-theft face shields 6 of an anti-electricity-theft face shield comprise at least two cover bodies, have between two cover bodies of annexation and connect by non-disconnectable mode; Preferably, the concrete structure between two cover bodies is:
An anti-electricity-theft face shield 6 comprises that a cover body 61 and 62, numbers cover bodies 61 of No. two cover bodies are 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;
Be connected by removable mode between anti-electricity-theft face shield 6 and the mutual inductor body 1; The concrete structure that preferred removable mode connects is:
All be fixed with chute and/or slide block 16 on a described cover body 61 and No. two cover bodies 62, on the described mutual inductor body 1 with the corresponding section of a cover body 61 and No. two cover bodies 62, be fixed with slide block and/or the chute 17 suitable with chute and/or slide block 16 respectively, the shape of cross section of described chute 17 is up-small and down-big.
Anti-electricity-theft face shield 6 of above-mentioned No. of choosing any one kind of them and mutual inductor syndeton owing to can't open without destruction, therefore have better power-steeling preventing effect.
Especially, No. one anti-electricity-theft face shield 6 is two, is fixedly installed on respectively on the surface of mutual inductor body 1 both sides.
Preferably, an end that is provided with 7, No. two anti-electricity-theft face shields 7 of No. two anti-electricity-theft face shields at the leading-out terminal place of mutual inductor body 1 is fixedlyed connected with mutual inductor body 1, and the other end is provided with a cabling mouth 7-1.
More preferably, No. two anti-electricity-theft face shields 7 comprise between cover body 71 and 72, numbers cover bodies 71 of No. two cover bodies and No. two cover bodies 72 and connecting by non-disconnectable mode.The preferred version that non-disconnectable mode connects is: No. one cover body 71 is provided with shackle member 71-1, and No. two cover body 72 is provided with the suitable card 72-1 with shackle member 71-1; Shackle member 71-1 on the described cover body 71 inserts in No. two card 72-1 on the cover body and realizes that clamping connects;
The preferred version that No. two anti-electricity-theft face shields 7 are connected with mutual inductor body 1 is: the outside surface of the secondary connection end of mutual inductor body 1 is provided with protruding 1-3, be respectively arranged with the groove 18 suitable with protruding 1-3 on the inwall of a described cover body 71 and No. two cover bodies 72, groove 18 is installed on the protruding 1-3.Preferably, described protruding 1-3 is an annular projection.
Further preferred, cabling mouth 7-1 place at No. two anti-electricity-theft face shields 7 connects corrugated tube 9 by box joint 8, the outside dimension of the internal diameter size of cabling mouth 7-1 and the connecting portion 8-1 of box joint 8 is suitable, and the connecting portion 8-1 of box joint 8 is installed in the cabling mouth 7-1 and the nut by box joint 8 is fastenedly connected.
Perhaps, also comprise the cable 19 that an end is electrically connected with the internal interface line end of mutual inductor body 1; The housing of the insulated hull of described cable 19 appearances and the mutual inductor body 1 of secondary connection end is cast into one.
Further, it also comprises the corrugated tube 20 that is sleeved on cable 19 outsides, and described corrugated tube 20 also is cast into one with the housing of the mutual inductor body 1 of secondary connection end.
Straight-through current transformer of the present invention structurally carries out innovative design, utilize double-screw bolt on the mutual inductor to conduct electricity and have the simple manageable advantage of circuit, and efficient is expensive low; The nut that is threaded on the conducting rod can avoid being connected loosening between double-screw bolt and the conducting rod or electricity filching person is filled in insulant to the junction and influenced metering by double-screw bolt and the cooperation between the nut, has therefore avoided stealing well; Simultaneously, nut can also play mutual inductor is fixed to effect on the transformer, the mutual inductor body is fixed on the porcelain vase position of transformer conducting bar lower end, avoided electricity filching person in the mutual inductor lower end the direct lead-in wire situation of carrying out stealing; A plurality of metal inserts can be fixed on mutual inductor on the conducting rod more firmly, thus can make simultaneously be electrically connected between double-screw bolt and the conducting rod transfer overvoltage signal more better.
Anti-electricity-theft face shield each other or with the mutual inductor body between be connected by non-disconnectable mode, it can realize the optimization of anti-stealing electricity function, in case because cover body and mutual inductor fixing after, can not open by failure mode, seal the drawback that is forged easily with respect to present lead sealing mode, the method of attachment of non-disconnectable mode of the present invention can avoid electricity filching person to open cover body fully with hoodwinking people, has therefore avoided the generation of stealing situation better.
Anti-electricity-theft face shield is set No. two at the leading-out terminal place, and No. two anti-electricity-theft face shields can be avoided electricity filching person to juggle things at mutual inductor outlet terminal place and carry out stealing.
In summary it can be seen that current transformer power taking pressure mode of the present invention is simple and direct and be not easy stealing, handling safety, it can be placed on the outer transformer conducting bar of batch meter, lead or the metal row, reduces the volume of batch meter greatly; Easy to use in the working time that can greatly save the workman, cost simple in structure is low flexibly, and simultaneously, double-screw bolt is connected stable with lead, and power taking is pressed accurately reliable, therefore is beneficial to and applies.
Description of drawings
Fig. 1 is the structure cut-open view of mutual inductor of the present invention;
Fig. 2 is the front view of mutual inductor;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is embodiment 1 a described mutual inductor user mode synoptic diagram;
Fig. 5 is that embodiment 1 described metallic stud 3a carries out the fixing structural representation of relative position by lead sealing 11 and mutual inductor body 1;
Fig. 6 A is embodiment 2 described mutual inductor structure cut-open views;
Fig. 6 B is embodiment 2 described mutual inductor structural representations;
Fig. 7 is the structural representation of embodiment 2 described nuts 5;
Fig. 8 is the structural representation that embodiment 2 described metallic stud 3a and nut 5 are connected;
Fig. 9 A is the embodiment 3 described mutual inductor structural representations that are provided with an anti-electricity-theft face shield 6;
Fig. 9 B is embodiment 3 described anti-electricity-theft face shields 6 and mutual inductor body 1 syndeton blast diagrammatic sketch;
Figure 10 is the syndeton synoptic diagram between embodiment 3 described anti-electricity-theft face shields 6 and the mutual inductor body 1;
Figure 11 is embodiment 4 described mutual inductor bodies 1 and anti-electricity-theft face shield 6 syndeton synoptic diagram;
Figure 12 is the explosive view of embodiment 4 described mutual inductor bodies 1 and anti-electricity-theft face shield 6 syndetons;
Figure 13 is the syndeton synoptic diagram of embodiment 5 described mutual inductor bodies 1 and No. two anti-electricity-theft covers 7;
Figure 14 is the explosive view of embodiment 5 described mutual inductor bodies 1 and No. two anti-electricity-theft face shield 7 syndetons;
Figure 15 is the structure cut-away view that the housing of embodiment 6 described cables and mutual inductor body 1 is cast into one;
Figure 16 is the structural representation that the housing of embodiment 6 described cables and mutual inductor body 1 is cast into one;
Figure 17 is the structure cut-away view that the embodiment 6 described corrugated tubes 20 and the housing of mutual inductor body 1 are cast into one;
Figure 18 is that the housing of embodiment 6 described corrugated tubes 20 and mutual inductor body 1 is cast into the unitary whole structural representation.
Wherein, mutual inductor body 1, center hole 1-1, card 1-2, protruding 1-3, pressure-wire outlet terminal 2, metal insert 4, power taking pressure part 3, metallic stud 3a, nut 5, hole 5-1, an anti-electricity-theft face shield 6, shackle member 6-1 on anti-electricity-theft face shield 6, No. two cover bodies 62 of 61, numbers anti-electricity-theft face shields 6 of a cover body of an anti-electricity-theft face shield 6, No. two anti-electricity-theft face shields 7, cabling mouth 7-1, a cover body 71 of No. two anti-electricity-theft face shields 7, shackle member 71-1 on cover body 71, the card 72-1 on 72, No. two cover bodies 72 of No. two cover bodies of No. two anti-electricity-theft face shields 7, box joint 8, connecting portion 8-1, corrugated tube 9, metal row 10, lead sealing 11, conductor 12, mutual inductor coil 13, insulation course 14, transformer guide rod 15, slide block 16, chute 17, groove 18, cable 19, be sleeved on the corrugated tube 20 of cable 19 outsides, fixed block 21, pin 22, screw 23.
Embodiment
Specify the preferred embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment 1:
The described current transformer of present embodiment is mainly used in gets voltage condition to bare metal row.It comprises the mutual inductor body 1 with center hole 1-1, the pressure-wire outlet terminal 2 and the power taking pressure part 3 that have electrical connection mutually are set on the described mutual inductor body 1, described power taking pressure part 3 is arranged on the side of center hole 1-1, and power taking pressure part 3 can radially move along center hole 1-1.
The side that power taking pressure part 3 is arranged on center hole can be avoided the power taking pressure part to occupy the center hole position and influence the use of mutual inductor, simultaneously, the power taking pressure part radially moves the needs that the mutual inductor that can make this structure adapts to different inner diameters, different cross section shape bus along center hole, therefore increases the adaptability that mutual inductor uses.
Power taking pressure part 3 is arranged on a side of center hole, promptly is arranged on the mutual inductor body of center hole termination.The structure of power taking pressure part 3 with and all be a lot of along the mode that center hole radially moves, such as, power taking pressure part 3 can be sheet or reguline metal, follower head at it is provided with slide block, on mutual inductor body 1, chute is set, can realizes being connected and moving radially between power taking pressure part and the mutual inductor body by the slide block and the cooperation of chute.Block power taking pressure part 3 can also be connected by between spring and the mutual inductor body, can realize moving radially between itself and the mutual inductor body center pit equally.
Preferably, described power taking pressure part 3 is metallic stud 3a, and described metallic stud 3a connects with mutual inductor body 1 by screw thread.What can now separate is, the threaded hole that passes through for metallic stud 3 need be set on mutual inductor body 1, and the axis of this threaded hole should pass through center hole 1-1.
In the prior art, straight-through current transformer is provided with metal insert 4, the metallic stud 3a's that is threaded on the metal insert 4, but their effect is fixedly punching bus.Present embodiment is preferably, effectively utilize the structure of existing mutual inductor, referring to figs. 1 through Fig. 4, metallic stud 3a is connected with metal insert 4, again the pressure-wire outlet terminal 2 on the mutual inductor body 1 is electrically connected with metal insert 4, like this, metallic stud 3a will arrange metal the pressure-wire outlet terminal that voltage is delivered to mutual inductor to metal row 10 (being the punching bus) fixedly the time, thereby realizes metal is arranged the collection of voltage signal on 10.
More preferably, described metal insert 4 is two and centers on the surface that center hole 1-1 is arranged on mutual inductor body 1, be electrically connected by conductor 12 between all metal inserts 4, metallic stud 3a all has been threaded on each metal insert 4, this structure can realize a plurality of double-screw bolts and contacting that metal is arranged, thereby gathers voltage signal better.Certainly can expect,, double-screw bolt 3a can be arranged to large-area front end,, metallic stud can be arranged to semicircular front end to adapt to cylindrical metal row's outside surface such as for cylindrical metal row in order to gather voltage signal better.
Can carry out relative position by lead sealing 11 between described metallic stud 3a and the mutual inductor body 1 fixes; with reference to Fig. 5; to avoid electricity filching person to break away from or the loosening collection that influences voltage signal to itself and metal row 10 by rotating double-screw bolt 3a; certainly in actual applications; can also take other purposes that realizes forbidding the double-screw bolt rotation as modes such as welding, rivets, also all in protection scope of the present invention.
In the present embodiment, connecting line between metal insert 4 and the pressure-wire outlet terminal 2 is injected in the mutual inductor housing, during application, metal insert 4 can be fixed on the mutual inductor body 1 and then by lead and be connected with pressure-wire outlet terminal 2, also can be as shown in Figure 1, metal insert 4 and conductor 12 are made integrative-structure, and the other end of conductor 12 directly connects pressure-wire outlet terminal 2; Described conductor 12 can be processed into annular, semicircle, also can be processed into the sheet of rectangle, spill as required, the conductor 12 of schistose texture is arranged on the top of mutual inductor coil 13 and separates the mutual inductor housing of casting outside again by insulation course 14 and mutual inductor coil 13.Described structure has conspicuous advantage: metallic stud 3a, metal insert 4 all are arranged on the mutual inductor housing, they do not occupy the position that the mutual inductor center pit is walked bus, thereby do not influence the coiling diameter of coil, can not influence simultaneously the use occasion of mutual inductor, simultaneously, the mutual inductor of this structure has also that the voltage signal transmission range is short, simple in structure, tie point is not easy to occur plurality of advantages such as disconnecting less.
Embodiment 2:
The described current transformer of present embodiment is mainly used in gets voltage condition to the transformer guide rod.If no special instructions, the described structure of present embodiment is identical with embodiment 1.
Described current transformer of present embodiment and embodiment 1 described mutual inductor difference structurally are, with reference to Fig. 6 A, Fig. 6 B, Fig. 7, Fig. 8, it also comprises nut 5, and the side of described nut 5 is provided with hole 5-1, and the hole is provided with the internal thread that matches with metallic stud 3a front end.
During use, at first the center pit with mutual inductor penetrates on the transformer guide rod 15, then nut 5 is spun on the guide rod 15 of transformer, the metallic stud 3 that will be threaded with metal insert 4 again
The front end of a screws in the threaded hole 5-1 of nut 5 sides.Like this, both can guarantee that mutual inductor body 1 was fixed on the guide rod 15, and avoid stealing, the while can be avoided double-screw bolt to become flexible and fill in insulating bodies between double-screw bolt 3a and guide rod 15, thereby can not influence the collection to voltage signal.
Preferably, around center hole 1-1, at least two metal inserts 4 are set on the mutual inductor housing, can be two metal inserts shown in Fig. 6 A, Fig. 6 B, it also can be three, four or more a plurality of, be electrically connected between all metal inserts 4, a double-screw bolt 3a all has been threaded on each metal insert 4.Be understandable that, the many more collections that are beneficial to more voltage signal of the number of metal insert 4, therefore, a plurality of double-screw bolt 3a are connected with nut 5 can make the voltage signal of collection more stable, and can better mutual inductor body 1 be fixed on the transformer guide rod 15.
In the foregoing description, embodiment 1 is preferably applied to that exposed metal row is carried out power taking and presses, embodiment 2 is preferably applied to that the transformer guide rod is carried out power taking and presses, but need to prove, embodiment 1 described structure can be applied to that equally the transformer guide rod is carried out power taking and press, embodiment 2 described structures can be applied to that metal row is carried out power taking and press, and can both realize purpose of the present invention.
Anti-electricity-theft cover above the mutual inductor nearly all is a case now, several mutual inductors 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 mutual inductor 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 mutual inductors, 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:
Present embodiment and embodiment 1 and embodiment 2 differences are, the structure of mutual inductor also comprises anti-electricity-theft face shield 6 No. one, be with the existing structure difference, the described anti-electricity-theft face shield 6 of present embodiment is connected by non-disconnectable mode with the surface of mutual inductor body 1, as can be seen, the anti-electricity-theft face shield of present embodiment is fixed on the mutual inductor body, and like this, mutual inductor just can be taken any position and use and be not limited in the chest.Be connected by non-disconnectable mode between this face shield and the mutual inductor body, that is to say, after metrological service is fixed to anti-electricity-theft face shield on the mutual inductor, just face shield can't be taken off above mutual inductor 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.
Fig. 2 and Fig. 4 have clearly illustrated the structure of mutual inductor body 1 outside surface, on the basis of this structure, connect anti-electricity-theft face shield 6 No. one by non-disconnectable mode again, the mutual inductor structure that is provided with an anti-electricity-theft face shield 6 is shown in Fig. 9 A, and it is as a whole to be arranged on the anti-electricity-theft face shield of No. of mutual inductor body 1 one side surfaces 6.This non-disconnectable syndeton is preferably, and with reference to Fig. 9 B and Figure 10, No. one anti-electricity-theft face shield 6 is provided with card and/or shackle member 6-1, and described mutual inductor body 1 is provided with and card and/or suitable shackle member and/or the card 1-2 of shackle member 6-1.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 mutual inductor.
Described anti-electricity-theft face shield 6 and on shackle member can make of engineering plastics or transparent engineering plastics, at the mutual inductor surface of shell a plurality of card are set, because the mutual inductor 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 6 on the mutual inductor housing, and then prevented stealing, can destroy anti-electricity-theft face shield when simultaneously, metrological service need overhaul and be unlikely to destroy mutual inductor.
For as described in present embodiment, being provided with anti-electricity-theft face shield at the mutual inductor body surface, then can between double-screw bolt and mutual inductor body, lead sealing be set yet, but the fixed block 21 of tape punching can be set in the rear end of double-screw bolt, with reference to Fig. 6 B, avoid becoming flexible of double-screw bolt 3a by in the perforation of fixed block 21, inserting pin 22, can not be worn pin for limitting, can directly double-screw bolt 3a be hammered on the mutual inductor body with screw 23 by the mutual inductor body construction.
Embodiment 4:
The present embodiment difference from Example 3 is, the another kind of structure that mutual inductor body 1 and anti-electricity-theft face shield 6 are connected by non-disconnectable mode is provided.
An anti-electricity-theft face shield 6 that is positioned at mutual inductor 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:
An anti-electricity-theft face shield 6 comprises that a cover body 61 and 62, numbers cover bodies 61 of No. two cover bodies are 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;
Be appreciated that described shackle member 61-1 of present embodiment and card 62-1 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 61-1 and card 62-1 is many more, connect firm more.
Be connected by removable mode between anti-electricity-theft face shield 6 and the mutual inductor body 1; The structure optimization that removable mode connects is:
All be fixed with chute and/or slide block 16 on a cover body 61 and No. two cover bodies 62, on the described mutual inductor body 1 with the corresponding section of a cover body 61 and No. two cover bodies 62, be respectively equipped with slide block and/or the chute 17 suitable with chute and/or slide block 16, the shape of cross section of described chute 17 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 domain that all belongs to this patent, described up-small and down-big structure can guarantee that a cover body 61 fixedlys connected with mutual inductor body 1 respectively with No. two cover bodies 62; In practical operation, can respectively a cover body 61 and No. two cover bodies 62 be slipped into from slide block and/or chute 17 on the mutual inductor body 1 by chute and/or slide block 16, after cover body 61 and No. two cover bodies 62 fasten, flanging all is stuck on the housing of mutual inductor body 1, further play the effect that relative motion takes place between restriction cover body and the mutual inductor body 1, and be connected to one by shackle member and card, and form non-disconnectable the connection between the mutual inductor body 1.
Embodiment 5:
Anti-electricity-theft also the needs protects the mutual inductor outlet terminal, therefore, is that with embodiment 1-4 difference present embodiment provides a kind of structure that prevents from the mutual inductor leading-out terminal is carried out stealing.
An end that is provided with 7, No. two anti-electricity-theft face shields 7 of No. two anti-electricity-theft face shields at the leading-out terminal place of mutual inductor body 1 is fixedlyed connected with mutual inductor body 1, and the other end is provided with a cabling mouth 7-1.
Preferred structure is, with reference to Figure 13,14, described No. two anti-electricity-theft face shields 7 comprise between cover body 71 and 72, numbers cover bodies 71 of No. two cover bodies and No. two cover bodies 72 and connecting by non-disconnectable mode.Non-disconnectable mode syndeton is preferably: No. one cover body 71 is provided with shackle member 71-1, and No. two cover body 72 is provided with the suitable card 72-1 with shackle member 71-1; Shackle member 71-1 on the described cover body 71 inserts in No. two card 72-1 on the cover body and realizes that clamping connects;
No. two anti-electricity-theft face shield 7 is preferably with mutual inductor body 1 fixed connection structure: the outside surface of the secondary connection end of mutual inductor body 1 is provided with protruding 1-3, be respectively arranged with the groove 18 suitable with protruding 1-3 on the inwall of a described cover body 71 and No. two cover bodies 72, groove 18 is installed on the protruding 1-3.
More preferably, cabling mouth 7-1 place at No. two anti-electricity-theft face shields 7 is connected with corrugated tube 9 by box joint 8, the outside dimension of the internal diameter size of cabling mouth 7-1 and the connecting portion 8-1 of box joint 8 is suitable, and the connecting portion 8-1 of box joint 8 is installed in the cabling mouth 7-1 and the nut by box joint 8 is fastenedly connected.
Embodiment 6:
Present embodiment is different with embodiment 5, and it provides the another kind of structure that prevents from the mutual inductor leading-out terminal is carried out stealing.
With reference to Figure 15, Figure 16, it comprises the cable 19 that an end is electrically connected with the internal interface line end of mutual inductor body 1; The housing of the insulated hull of described cable 19 appearances and the mutual inductor body 1 of secondary connection end is cast into one.
Preferably, with reference to Figure 17, Figure 18, it also comprises the corrugated tube 20 that is sleeved on cable 19 outsides, and described corrugated tube 20 also is cast into one with the housing of the mutual inductor body 1 of secondary connection end.
The insulation sheath of the described cable 19 of present embodiment and the housing of mutual inductor body 1 are cast into one, electric current contact and voltage contact all are arranged in the housing of mutual inductor 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 7-1 place of No. two anti-electricity-theft face shields 7, in conjunction with the embodiments 5 and embodiment 6 can expect that No. two anti-electricity-theft face shields 7 and cable can be cast into one and use, and still can realize purpose of the present invention preferably; Certainly it will also be appreciated that the corrugated tube that is sleeved on the cable outside can be cast into one with No. two anti-electricity-theft face shields 7 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 mutual inductor, can be by purpose of the present invention, 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 domain 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 being equal to replacement to of the present invention, all should be within protection scope of the present invention.
Claims (17)
1. the straight-through current transformer of a conveniently taking voltage, it comprises the have center hole mutual inductor body (1) of (1-1), the pressure-wire outlet terminal (2) and the power taking pressure part (3) that have electrical connection mutually are set on the described mutual inductor body (1), it is characterized in that described power taking pressure part (3) is arranged on a side of center hole (1-1), and power taking pressure part (3) can radially move along center hole (1-1).
2. the straight-through current transformer of a kind of conveniently taking voltage according to claim 1 is characterized in that described power taking pressure part (3) is and the metallic stud (3a) of mutual inductor body (1) by thread connection.
3. the straight-through current transformer of a kind of conveniently taking voltage according to claim 1, it is characterized in that described mutual inductor body (1) is provided with metal insert (4), the metallic stud (3a) that has been threaded on the described metal insert (4), described metal insert (4) is electrically connected with pressure-wire outlet terminal (2).
4. the straight-through current transformer of a kind of conveniently taking voltage according to claim 3, it is characterized in that described metal insert (4) is at least two and be arranged on the surface of mutual inductor body (1) around center hole (1-1), be electrically connected between all metal inserts (4), metallic stud (3a) all has been threaded on each metal insert (4).
5. the straight-through current transformer of a kind of conveniently taking voltage according to claim 2 is characterized in that carrying out relative position by lead sealing between described metallic stud (3a) and the mutual inductor body (1) fixes.
6. the straight-through current transformer of a kind of conveniently taking voltage according to claim 2 is characterized in that it also comprises nut (5), and the side of described nut (5) is provided with hole (5-1), and hole (5-1) is provided with the internal thread that matches with double-screw bolt (3a) front end.
7. according to the straight-through current transformer of claim 1,2,3,4,5 or 6 described a kind of conveniently taking voltages, it is characterized in that also comprising an anti-electricity-theft face shield (6), a described anti-electricity-theft face shield (6) is connected by non-disconnectable mode with the surface of mutual inductor body (1).
8. the straight-through current transformer of a kind of conveniently taking voltage according to claim 7, it is characterized in that a described anti-electricity-theft face shield (6) is provided with card and/or shackle member (6-1), described mutual inductor body (1) is provided with and card and/or suitable shackle member and/or the card (1-2) of shackle member.
9. according to the straight-through current transformer of claim 1,2,3,4,5 or 6 described a kind of conveniently taking voltages, it is characterized in that also comprising an anti-electricity-theft face shield (6), be connected by removable mode between an anti-electricity-theft face shield (6) and the mutual inductor body (1);
A described anti-electricity-theft face shield (6) comprises at least two cover bodies, has between two cover bodies of annexation to connect by non-disconnectable mode.
10. the straight-through current transformer of a kind of conveniently taking 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 (6) comprises a cover body (61) and No. two cover bodies (62), and a cover body (61) is provided with shackle member (61-1), and 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 concrete structure that is connected by removable mode between an anti-electricity-theft face shield (6) and the mutual inductor body (1) is:
All be fixed with chute and/or slide block (16) on a described cover body (61) and No. two cover bodies (62), described mutual inductor body (1) is gone up the corresponding section with a cover body (61) and No. two cover bodies (62), be fixed with respectively and chute and/or suitable slide block and/or the chute (17) of slide block (16), the shape of cross section of described chute (17) is up-small and down-big.
11. the straight-through current transformer of a kind of conveniently taking voltage according to claim 10 is characterized in that a described anti-electricity-theft face shield (6) is two, is fixedly installed on respectively on the surface of mutual inductor body (1) both sides.
12. straight-through current transformer according to claim 1,2,3,4,5 or 6 described a kind of conveniently taking voltages, the leading-out terminal place that it is characterized in that described mutual inductor body (1) is provided with No. two anti-electricity-theft face shields (7), one end of No. two anti-electricity-theft face shields (7) is fixedlyed connected with mutual inductor body (1), and the other end is provided with a cabling mouth (7-1).
13. the straight-through current transformer of a kind of conveniently taking voltage according to claim 12, it is characterized in that described No. two anti-electricity-theft face shields (7) comprise a cover body (71) and No. two cover bodies (72), connect by non-disconnectable mode between a cover body (71) and No. two cover bodies (72).
14. the straight-through current transformer of a kind of conveniently taking voltage according to claim 13 is characterized in that a cover body (71) is provided with shackle member (71-1), No. two cover bodies (72) are provided with and the suitable card (72-1) of shackle member (71-1); Shackle member (71-1) on the described cover body (71) is inserted in No. two card (72-1) on the cover body and is realized that clamping connects;
The outside surface of the secondary connection end of described mutual inductor body (1) is provided with projection (1-3), be respectively arranged with on the inwall of a described cover body (71) and No. two cover bodies (72) and projection (1-3) suitable groove (18), groove (18) is installed on the projection (1-3).
15. the straight-through current transformer of a kind of conveniently taking voltage according to claim 12, the cabling mouth (7-1) that it is characterized in that described No. two anti-electricity-theft face shields (7) is located to be connected with corrugated tube (9) by box joint (8), the outside dimension of the connecting portion (8-1) of the internal diameter size of cabling mouth (7-1) and box joint (8) is suitable, and the connecting portion (8-1) of box joint (8) is installed in the cabling mouth (7-1) and the nut by box joint (8) is fastenedly connected.
16., it is characterized in that it also comprises the cable (19) that an end is electrically connected with the internal interface line end of mutual inductor body (1) according to the straight-through current transformer of claim 1,2,3,4,5 or 6 described a kind of conveniently taking voltages; The housing of the insulated hull of described cable (19) appearance and the mutual inductor body (1) of secondary connection end is cast into one.
17. the straight-through current transformer of a kind of conveniently taking voltage according to claim 16, it is characterized in that it also comprises the corrugated tube (20) that is sleeved on cable (19) outside, described corrugated tube (20) also is cast into one with the housing of the mutual inductor body (1) of secondary connection end.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100514611A CN101034100A (en) | 2007-02-02 | 2007-02-02 | Straight-through current transformer capable of conveniently taking voltage |
| CN200810074348XA CN101286413B (en) | 2007-02-02 | 2008-02-01 | Straight-through current transformer convenient for measuring voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100514611A CN101034100A (en) | 2007-02-02 | 2007-02-02 | Straight-through current transformer capable of conveniently taking voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101034100A true CN101034100A (en) | 2007-09-12 |
Family
ID=38730750
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100514611A Pending CN101034100A (en) | 2007-02-02 | 2007-02-02 | Straight-through current transformer capable of conveniently taking voltage |
| CN200810074348XA Expired - Fee Related CN101286413B (en) | 2007-02-02 | 2008-02-01 | Straight-through current transformer convenient for measuring voltage |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810074348XA Expired - Fee Related CN101286413B (en) | 2007-02-02 | 2008-02-01 | Straight-through current transformer convenient for measuring voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN101034100A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008095415A1 (en) * | 2007-02-02 | 2008-08-14 | Hubei Shengjia Electrical Apparatus Ltd. | A core-through type current transformer with an anti-theft veil for easily detecting voltage |
| CN101487859B (en) * | 2008-01-15 | 2013-01-23 | 湖北盛佳电器设备有限公司 | High-voltage direct measurement apparatus |
| CN109378170A (en) * | 2018-12-13 | 2019-02-22 | 上海康比利仪表有限公司 | A kind of mutual inductor installation structure |
| CN111007342A (en) * | 2019-12-20 | 2020-04-14 | 上海创远仪器技术股份有限公司 | Method for realizing measurement processing of wireless power charging transmission efficiency for handheld instrument based on computer software |
| CN111948448A (en) * | 2020-08-20 | 2020-11-17 | 国网河北省电力有限公司沧州供电分公司 | Anti-electricity-stealing system based on expert knowledge base |
| CN114062752A (en) * | 2021-11-18 | 2022-02-18 | 浙江天正电气股份有限公司 | Mutual inductor processing method and consistency implementation method of mutual inductor and metering core |
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| DE102009059008B4 (en) * | 2009-12-17 | 2015-04-16 | Phoenix Contact Gmbh & Co. Kg | Device for releasably securing a conductor to a current transformer housing |
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| US5367251A (en) * | 1993-01-19 | 1994-11-22 | Mctigue James F | Tool for grasping and piercing insulated electrical cable for determining whether conductor of cable is energized |
| US5426360A (en) * | 1994-02-17 | 1995-06-20 | Niagara Mohawk Power Corporation | Secondary electrical power line parameter monitoring apparatus and system |
| CN2277557Y (en) * | 1996-10-24 | 1998-04-01 | 重庆山城电器厂 | Current transformer avoiding or indicating fraudulent use of electricity |
| KR20020068453A (en) * | 2001-10-30 | 2002-08-27 | 한전케이디엔 주식회사 | Probe for measuring voltage/current of power distribution low voltage line |
| CN2649852Y (en) * | 2003-11-05 | 2004-10-20 | 安徽工业大学 | Locknut |
| CN2722399Y (en) * | 2004-03-24 | 2005-08-31 | 万家盛 | Mutual inductor against charge evasion |
| CN2859760Y (en) * | 2005-12-16 | 2007-01-17 | 袁金保 | Anti-stealing electricity protection card cover of current transformer |
-
2007
- 2007-02-02 CN CNA2007100514611A patent/CN101034100A/en active Pending
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- 2008-02-01 CN CN200810074348XA patent/CN101286413B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008095415A1 (en) * | 2007-02-02 | 2008-08-14 | Hubei Shengjia Electrical Apparatus Ltd. | A core-through type current transformer with an anti-theft veil for easily detecting voltage |
| CN101487859B (en) * | 2008-01-15 | 2013-01-23 | 湖北盛佳电器设备有限公司 | High-voltage direct measurement apparatus |
| CN109378170A (en) * | 2018-12-13 | 2019-02-22 | 上海康比利仪表有限公司 | A kind of mutual inductor installation structure |
| CN111007342A (en) * | 2019-12-20 | 2020-04-14 | 上海创远仪器技术股份有限公司 | Method for realizing measurement processing of wireless power charging transmission efficiency for handheld instrument based on computer software |
| CN111007342B (en) * | 2019-12-20 | 2022-03-04 | 上海创远仪器技术股份有限公司 | Method for realizing measurement processing of wireless power charging transmission efficiency for handheld instrument based on computer software |
| CN111948448A (en) * | 2020-08-20 | 2020-11-17 | 国网河北省电力有限公司沧州供电分公司 | Anti-electricity-stealing system based on expert knowledge base |
| CN114062752A (en) * | 2021-11-18 | 2022-02-18 | 浙江天正电气股份有限公司 | Mutual inductor processing method and consistency implementation method of mutual inductor and metering core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101286413B (en) | 2011-11-16 |
| CN101286413A (en) | 2008-10-15 |
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