CN112735745B

CN112735745B - Adjustable replacement type high-voltage current transformer

Info

Publication number: CN112735745B
Application number: CN202011321531.2A
Authority: CN
Inventors: 陶成法; 吴义汉; 吴书能; 叶道坤; 彭海珍; 王洁然
Original assignee: Anhui Huaneng Electric Appliance Group Co ltd
Current assignee: Anhui Huaneng Electric Appliance Group Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2022-08-30
Anticipated expiration: 2040-11-23
Also published as: CN112735745A

Abstract

The invention relates to an adjustable and replaceable high-voltage current transformer which comprises a base, wherein two parallel transformer bodies are arranged on the base, a switcher for connecting a cable is arranged above the two transformer bodies, two groups of clamps for clamping the cable in a closed manner are arranged inside the switcher, and the two clamps in the same group move on two sides of a gear through two opposite racks to realize synchronous folding and separation. According to the invention, the rotating rod at the lower end of the rotating disc is rotated to drive the rotating disc to rotate, the rotating disc rotates to drive the two main clamping plates at the two ends of the rotating disc to rotate, the main clamping plates drive the other auxiliary clamping plate in the same group to keep synchronous movement through the combination of the gear and the two racks at the two sides, synchronous clamping or separation of a cable is realized, the two groups of clamps respectively correspond to the two mutual inductor bodies, the mutual inductor bodies are quickly switched, the two mutual inductor bodies arranged in parallel are used as the mutual replacement of the other mutual inductor bodies, and the purpose of avoiding carrying and quick replacement is realized.

Description

Adjustable replacement type high-voltage current transformer

Technical Field

The invention relates to the technical field of transformers, in particular to an adjustable and replaceable high-voltage current transformer.

Background

The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary side winding of the transformer has few turns and is connected in a circuit of the current to be measured. Therefore, all current of a line always flows through the current transformer, the number of turns of the secondary side winding is large, the secondary side winding is connected in series in the measuring instrument and the protection loop, and the secondary side loop of the current transformer is always closed when the current transformer works, so that the impedance of the series coil of the measuring instrument and the protection loop is very small, and the working state of the current transformer is close to a short circuit. The current transformer converts a large current on the primary side into a small current on the secondary side for measurement, and the secondary side can not be opened.

The high-voltage current transformer of the existing state net is in the use, because the circuit can meet different conditions, such as overload, etc., the current transformer is possibly damaged, the size of the current transformer is larger, the current transformer is inconvenient to carry about in the circuit maintenance process, once the current transformer is damaged, the current transformer with the same model or performance needs to be transported again for replacement, the circuit use is seriously influenced, and therefore the current transformer capable of being replaced quickly is needed.

Disclosure of Invention

In order to meet the requirement for quickly replacing the current transformer, the invention provides an adjustable replaceable high-voltage current transformer.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides an adjustable change formula high-voltage current transformer, includes the base, install two mutual-inductor bodies that parallel on the base, two mutual-inductor body's top is provided with the switch that is used for connecting the cable conductor, the inside of switch is provided with two sets ofly closes the anchor clamps of embracing the centre gripping to the cable conductor, with a set of two remove in the gear both sides through two reverse racks between the anchor clamps, realize synchronous foling and part, every group anchor clamps respectively have a main clamping plate to install and switch on the carousel and rotate, every group anchor clamps correspond one mutual-inductor body supplies power for it.

The switcher comprises a chassis and a shell which are clamped with each other, wherein notches for clamping cables are arranged on two opposite sides of the shell.

Two symmetrical H-shaped grooves are formed in the bottom surface inside the chassis, two vertical grooves inside the H-shaped grooves are internally provided with two opposite racks, and a transverse groove is internally provided with a gear.

One end fixedly connected with bar groove of one of them the rack slides in this bar groove and is provided with the cylindricality lower extreme of main splint, the outside part that leans on in H-shaped groove still is provided with the groove that runs through of bar, and the inside that should run through the groove slides and is provided with the slide, and this slide is with another rack one end is fixed, be provided with the auxiliary splint on the slide.

Anchor clamps by the main board with vice splint are constituteed, just the main board with vice splint all set up to circular-arc, and two with the below through inside cable the mutual-inductor body is connected.

The carousel sets up to right angled L form, and both ends set up to arc limit triangle-shaped, two the main board is fixed respectively the both ends of carousel.

The lower fixed surface of carousel is connected with the bull stick, and this bull stick runs through the center of the inside on chassis, the lower extreme lateral wall annular equidistance of bull stick is provided with a plurality of lockhole, the lower surface on chassis is offered and is used for supplying people to point male rotation groove and locking groove, it is provided with to be used for inserting greatly to slide in the locking groove locking lever in the lockhole.

The beneficial effects of the invention are:

according to the invention, the rotating rod at the lower end of the rotating disc is rotated to drive the rotating disc to rotate, the rotating disc rotates to drive the two main clamping plates at the two ends of the rotating disc to rotate, the main clamping plates move to drive the other auxiliary clamping plate in the same group to keep synchronous movement through the gear and the two rack combinations at the two sides, so that the cable is synchronously clamped or separated, the two groups of clamps respectively correspond to the two mutual inductor bodies, and thus the mutual inductor bodies are rapidly switched by rotating the rotating disc, and the two mutual inductor bodies arranged in parallel are used as the mutual replacement of the other mutual inductor body, so that the purpose of avoiding carrying and rapidly replacing is realized.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is a perspective view of a base portion of the present invention;

FIG. 3 is a first schematic perspective view of the switch of the present invention;

FIG. 4 is a schematic perspective view of a switch according to the present invention;

FIG. 5 is a schematic diagram of the switch of the present invention;

FIG. 6 is a schematic diagram of the inner plane structure of the switch of the present invention;

FIG. 7 is a schematic view of the clip attachment of the present invention;

fig. 8 is a partially enlarged structural view at a of fig. 4.

In the figure: 1. a base; 2. a transformer body; 3. a switch; 31. a chassis; 311. an H-shaped groove; 312. a through groove; 313. a slide base; 314. a rotating groove; 315. a locking groove; 316. a through hole; 32. a housing; 33. a rack; 331. a strip-shaped groove; 34. a gear; 35. a clamp; 351. a main clamping plate; 352. an auxiliary splint; 353. a cable; 36. a turntable; 37. a rotating rod; 371. a lock hole; 38. locking the lever.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be described more clearly and more completely with reference to the drawings in the following embodiments, and it is understood that the described embodiments are only a part of the present invention, rather than all of the present invention, and based on the embodiments, other embodiments obtained by those skilled in the art without inventive exercise are within the protection scope of the present invention.

As shown in fig. 1 to 8, an adjustable replaceable high-voltage current transformer comprises a base 1, two parallel transformer bodies 2 are mounted on the base 1, a switcher 3 used for connecting cables is arranged above the two transformer bodies 2, two sets of clamps 35 used for clamping the cables are arranged inside the switcher 3, the two clamps 35 in the same set move on two sides of a gear 34 through two opposite racks 33, synchronous folding and separation are achieved, each set of clamps 35 are respectively provided with a main clamping plate 351 which is mounted on a turntable 36 for switching rotation, and each set of clamps 35 supplies power for the corresponding transformer body 2.

The switcher 3 comprises a chassis 31 and a shell 32 which are clamped with each other, and notches for clamping cables are arranged on two opposite sides of the shell 32. Breach on the shell 32 on the one hand is convenient to go into the cable conductor card between chassis 31 and shell 32, and on the other hand also carries out preliminary injecing to the cable conductor, avoids rocking the anchor clamps 35 centre gripping that influence inside at the cable conductor under the effect of external force, through the buckle joint between shell 32 and the chassis 31, also can be all through bolt spiro union.

Two symmetrical H-shaped grooves 311 are formed in the bottom surface inside the chassis 31, two vertical grooves inside the H-shaped grooves 311 are internally provided with two opposite racks 33, and a transverse groove is internally provided with a gear 34. One end of one of the racks 33 is fixedly connected with a strip-shaped groove 331, the strip-shaped groove 331 is provided with a cylindrical lower end of the main clamp 351 in a sliding manner, the outer side part of the H-shaped groove 311 is also provided with a strip-shaped through groove 312, a sliding seat 313 is arranged in the through groove 312 in a sliding manner, the sliding seat 313 is fixed with one end of the other rack 33, and a secondary clamp 352 is arranged on the sliding seat 313. The turntable 36 drives the main clamping plate 351 to rotate and move, the lower end of the main clamping plate 351 moves in the strip-shaped groove 331, the rack 33 fixed by the strip-shaped groove 331 and the strip-shaped groove 331 is driven to move along one of the vertical grooves of the H-shaped groove 311, the rack 33 is driven to move reversely along the other vertical groove of the H-shaped groove 311 through the gear 34, and the auxiliary clamping plate 352 is driven to move reversely, so that the main clamping plate 351 and the auxiliary clamping plate 352 move oppositely, and synchronous clamping or disconnection of cables is realized.

The jig 35 is composed of a main plate 351 and an auxiliary plate 352, and the main plate 351 and the auxiliary plate 352 are both set to be circular arc-shaped, and are connected with the two transformer bodies 2 below through the cable 353 inside. The outer wall of laminating cable conductor that main plate 351 and auxiliary plate 352 all set up circular-arc can be better realizes guaranteeing the inseparable of centre gripping to the semi-packet of cable conductor, and the cable 353 of main plate 351 communicates through the through-hole 316 along the deep trouth that one of them perpendicular groove of H-shaped groove 311 set up on the chassis 31, then communicates mutual-inductor body 2 upper end, and the cable 353 of auxiliary plate 352 directly communicates mutual-inductor body 2's upper end in the below that runs through groove 312 through passing slide 313.

The turntable 36 is arranged in a right-angled L shape, and the two ends of the turntable are arranged in a triangular arc shape, and the two main clamping plates 351 are respectively fixed at the two ends of the turntable 36. The L form that carousel 36 set up, and two main splint 351 are located its both ends, thereby contact the cable conductor through arbitrary one in two main splint 351 of corotation or reversal control, and carry out the centre gripping to the cable conductor and fix, guarantee one of them contact, another disconnection, both ends department sets up to the triangle-shaped L shape both sides of carousel 36 of arc limit and supplements, guarantee main splint 351 when rotating to the cable conductor centre gripping, keep parallel with auxiliary splint 352, thereby can cooperate the outer wall of the better laminating cable conductor of auxiliary splint 352, realize the firm of centre gripping.

The lower fixed surface of carousel 36 is connected with bull stick 37, and this bull stick 37 runs through the inside center of chassis 31, and the lower extreme lateral wall annular equidistance of bull stick 37 is provided with a plurality of lockhole 371, and the lower surface of chassis 31 is seted up and is used for supplying the male rotation groove 314 and locking groove 315 of people's finger, slides in the locking groove 315 to be provided with the locking lever 38 that is arranged in inserting big lockhole 371. Locking rod 38 through horizontal slip inserts the lockhole 371 to the side of bull stick 37 bottom in locking groove 315, realize the locking to bull stick 37, the locking of bull stick 37 is realized the locking to carousel 36, carousel 36 is locked motionlessly, cause the rigidity of two main splint 351 that carousel 36 drove, thereby main splint 351 position is motionless, the gear 34 rack 33 position of bottom is motionless, lead to the rigidity of vice splint 352, the position of final two anchor clamps 35 is motionless, realize fixing the centre gripping of cable conductor, when avoiding receiving external force effect left and right sides at the cable conductor and rocking, reverse promotion anchor clamps 35 breaks away from the outer wall of cable conductor, thereby lead to the condition such as contact failure or outage.

When overhauling and switching: after the user pulls the locking lever 38 outward, the front end of the locking lever 38 is disengaged from the locking hole 371, the user's finger is inserted into the rotation groove 314, the side surface of the bottom of the rotating rod 37 is twisted to drive the rotating rod 37 and the turntable 36 fixedly connected with the rotating rod 37 to rotate, the rotation of the turntable 36 drives one group of the clamps 35 to separate the cable, the other group of the clamps 35 mutually approach to clamp the cable, the mutual inductor body 2 connected with the separated group of clamps 35 through the cable 353 is powered off, the mutual inductor body 2 connected with the other group of clamps 35 which are close to each other to clamp the cable is powered on to replace the original mutual inductor body 2 for working, after the rotation is finished, the locking rod 38 is inserted into the locking hole 371 on the lower end side of the rotating rod 37 again to complete the locking of the rotating disc 36, that is, the position of the clamp 35 is fixed, and the cable is prevented from being separated from the clamp 35 when swinging.

When the rotary table 36 rotates, the rotary table 36 drives the main clamping plate 351 to rotate to realize the movement of the position, the main clamping plate 351 slides in the strip-shaped groove 331 through the lower end, the rack 33 fixed by the strip-shaped groove 331 and the strip-shaped groove 331 slides in the vertical groove of the H-shaped groove 311, the sliding of the rack 33 drives the other rack 33 to reversely move along the other vertical groove of the H-shaped groove 311 through the gear 34, the other rack 33 pulls the sliding seat 313 fixed with the other rack to slide in the through groove 312, the auxiliary clamping plate 352 is driven to move, the main clamping plate 351 and the auxiliary clamping plate 352 keep synchronous movement, and the clamping or the separation disconnection of the cable in a closed holding mode is realized.

The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an adjustable change formula high voltage current transformer which characterized in that: the automatic closing device comprises a base (1), wherein two parallel mutual inductor bodies (2) are installed on the base (1), a switcher (3) used for connecting cables is arranged above the two mutual inductor bodies (2), two groups of clamps (35) used for clamping the cables in an embracing mode are arranged inside the switcher (3), the two clamps (35) in the same group move on two sides of a gear (34) through two reverse racks (33) to realize synchronous closing and opening, a main clamping plate (351) is installed on a rotary table (36) for switching rotation in each group of clamps (35), and each group of clamps (35) supplies power to the corresponding mutual inductor body (2); the switcher (3) comprises a chassis (31) and a shell (32) which are clamped with each other, and notches (321) for clamping cables are arranged on two opposite sides of the shell (32); two symmetrical H-shaped grooves (311) are formed in the bottom surface inside the chassis (31), two opposite racks (33) are arranged in two vertical grooves inside the H-shaped grooves (311), and a gear (34) is arranged in a transverse groove; one end of one of the racks (33) is fixedly connected with a strip-shaped groove (331), the strip-shaped groove (331) is internally provided with the cylindrical lower end of the main clamping plate (351) in a sliding manner, the part, close to the outer side, of the H-shaped groove (311) is also provided with a strip-shaped through groove (312), a sliding seat (313) is arranged in the through groove (312) in a sliding manner, the sliding seat (313) is fixed with one end of the other rack (33), and the sliding seat (313) is provided with an auxiliary clamping plate (352); the clamp (35) consists of a main clamp plate (351) and an auxiliary clamp plate (352), the main clamp plate (351) and the auxiliary clamp plate (352) are both arc-shaped, and are connected with the two transformer bodies (2) below through cables (353) inside; the turntable (36) is arranged in a right-angled L shape, two ends of the turntable are arranged in an arc edge triangular shape, and the two main clamping plates (351) are respectively fixed at two ends of the turntable (36); the lower surface of the turntable (36) is fixedly connected with a rotating rod (37), the rotating rod (37) penetrates through the center of the inside of the chassis (31), and a plurality of locking holes (371) are annularly and equidistantly formed in the side wall of the lower end of the rotating rod (37); a user pulls a locking rod (38) outwards, after the front end of the locking rod (38) is separated from a lock hole (371), fingers of the user are inserted into a rotating groove (314), the bottom side surface of a rotating rod (37) is screwed to drive the rotating rod (37) and a turntable (36) fixedly connected with the rotating rod (37) to rotate, the rotation of the turntable (36) drives one group of clamps (35) to separate cables, the other group of clamps (35) draw close to each other to clamp the cables, a mutual inductor body (2) connected with the separated group of clamps (35) through cables (353) is powered off, the other group of clamps (35) drawing close to each other to clamp the cables are powered on through the mutual inductor body (2) connected through the cables (353) to replace the original mutual inductor body (2) to work, after the rotation is completed, the locking rod (38) is inserted into the lock hole (371) on the lower end side surface of the rotating rod (37) again to complete the locking of the turntable (36), the position of the clamp (35) is fixed, and the cable is prevented from being separated from the clamp (35) when swaying.

2. The adjustable replaceable high-voltage current transformer according to claim 1, wherein a rotating groove (314) for inserting human fingers and a locking groove (315) are formed in the lower surface of the chassis (31), and a locking rod (38) for inserting into the locking hole (371) is slidably arranged in the locking groove (315).