CN210925649U

CN210925649U - Portable split type current transformer

Info

Publication number: CN210925649U
Application number: CN201922131359.3U
Authority: CN
Inventors: 李慢来
Original assignee: JINHUA AOKAI ELECTRIC FACTORY
Current assignee: JINHUA AOKAI ELECTRIC FACTORY
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-07-03
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a portable split type current transformer relates to mutual-inductor technical field, including last casing, lower casing, fastener and hinge, the right side of going up the casing outer wall is connected with the outer wall rotation of hinge, the right side of casing outer wall is connected with the outer wall rotation of hinge down, two the same fasteners are installed to the outer wall symmetry of casing down. This a portable split type current transformer, hinge and last casing through setting up, the outer wall of casing rotates to be connected down, the components of a whole that can function independently between casing and lower casing is rotated in the realization, through divide into iron core and two parts of iron core down with the iron core, go up the iron core and bond respectively in last casing and lower casing with lower iron core, when going up casing and casing closure down, go up the iron core and form a whole closed return circuit with lower iron core, current transformer can normally work, in order to reach the current transformer components of a whole that can function independently, convenient to use's effect, and the device is more small and exquisite, the material is lighter, and convenient to carry.

Description

Portable split type current transformer

Technical Field

The utility model relates to a mutual-inductor technical field specifically is a portable split type 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 in the lines of power generation, transformation, transmission, distribution and utilization is very different, from several amperes to several tens of thousands of amperes. In order to facilitate measurement, protection and control, the voltage on a line is generally higher, and the direct measurement is very dangerous, so that the current transformer has the functions of current transformation and electrical isolation.

However, the current transformers on the market are generally in an integral ring shape, the shape is huge, when measuring the current of some wires, the wires need to pass through the iron ring, and the use is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a portable split type current transformer possesses portable, and convenient to use's advantage has solved the molding huge, uses inconvenient problem.

The utility model discloses a solve above-mentioned technical problem, provide following technical scheme: the utility model provides a portable split type current transformer, includes casing, lower casing, fastener and hinge, the right side of going up the casing outer wall rotates with the outer wall of hinge to be connected, the right side of casing outer wall rotates with the outer wall of hinge to be connected down, two the same fasteners are installed to the outer wall symmetry of casing down.

Further, the inside of casing is provided with down the iron core the outer wall of iron core bonds with the inner wall of casing down, the outer wall of iron core is provided with secondary winding down, secondary winding's outer wall is connected with the outer wall winding of iron core down, the arc wall has been seted up at the top of casing down, go up the casing and the middle flute profile of casing down has formed the cavity.

Further, the inside of fastener includes button, spring, elasticity iron sheet, dog and iron plate, the through-hole has been seted up at the top of fastener, the outer wall of button and the inner wall swing joint of through-hole, the top of dog and the top fixed connection of fastener, the bottom of dog and the right-hand member fixed connection at elasticity iron sheet top, the bottom of spring and the bottom fixed connection of fastener, the top of spring and the left end fixed connection of elasticity iron sheet bottom, the right-hand member of elasticity iron sheet and the bottom welding of iron plate, the bottom of most button and the top joint of elasticity iron sheet.

Further, the inside of going up the casing is provided with the iron core, the outer wall of going up the iron core bonds with the inner wall of last casing, the outer wall of going up the casing is provided with the fixture block, go up the outer wall of fixture block and the outer wall fixed connection of last casing, the bottom fixed mounting of going up the fixture block has spherical convex block, be provided with down the fixture block under going up the fixture block, the outer wall of fixture block and the outer wall fixed connection of lower casing down, spherical groove has been seted up at the top of fixture block down.

Furthermore, the bottom of the outer wall of the lower shell is provided with a hole, the outer wall of the wire clamp is fixedly connected with the inner wall of the hole, the two ends of the secondary winding are fixedly connected with the iron block, and the two ends of the upper iron core penetrate through the lower shell and are connected to the lower iron core.

Furthermore, the upper shell and the lower shell are made of insulating hard plastics, two ends of the secondary winding are electrically connected with the outer wall of the iron block, and the bottom of the upper clamping block is connected with the top of the lower clamping block in a clamping mode.

Compared with the prior art, this portable split type current transformer possesses following beneficial effect:

1. the utility model discloses a hinge that sets up is connected with the outer wall rotation of last casing, casing down, realizes that the components of a whole that can function independently between casing and lower casing rotates, through divide into iron core and two parts of lower iron core with the iron core, goes up the iron core and bonds respectively in last casing and lower casing with lower iron core, and when going up casing and casing closure down, go up the iron core and form a whole closed return circuit with lower iron core, current transformer can normally work to reach the current transformer components of a whole that can function independently, convenient to use's effect.

2. The utility model discloses a fastener that sets up, press the button during use, the button oppresses the elasticity iron sheet and bends downwards, insert the fastener of casing lower extreme down respectively with the both ends wiring of measuring instrument this moment, loosen the button again, the spring bounces the elasticity iron sheet, make elasticity iron sheet and instrument both ends wiring electric connection, convenient to operate has been reached, convenient effect, the current-carrying wire that will survey passes the cavity, because the device itself is not equipped with primary winding, the current-carrying wire passes the cavity and plays the effect of primary winding, its transformation ratio is confirmed according to the number of turns that primary winding passes the iron core, it is more to cross the heart number of turns, the transformation ratio is smaller; on the contrary, the smaller the number of the feed-through turns is, the larger the transformation ratio is, so that the current-carrying wires with different sizes of the current measured by the same device can be achieved, and the shell of the device is made of plastics, so that the device is lighter in weight, powerful in function, simple in structure and convenient to carry.

Drawings

FIG. 1 is a sectional view of the present invention;

FIG. 2 is a front view of the structure of the present invention;

FIG. 3 is a top view of the lower housing structure of the present invention;

FIG. 4 is a sectional view of the structure of the cable clamp of the present invention;

fig. 5 is an assembly view of the fixture block structure of the present invention.

In the figure: 1. an upper housing; 2. a lower housing; 3. wire clamps; 4. an upper iron core; 5. a lower iron core; 6. a secondary winding; 7. a hinge; 8. a cavity; 9. a button; 10. a spring; 11. an elastic iron piece; 12. a stopper; 13. an iron block; 14. an upper clamping block; 15. lower fixture block 16 and spherical groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a portable split-type current transformer, which comprises an upper shell 1 and a lower shell 2, fastener 3 and hinge 7, go up the right side of 1 outer wall of casing and be connected with the outer wall rotation of hinge 7, the right side of 2 outer walls of lower casing is connected with the outer wall rotation of hinge 7, go up casing 1, casing 2's material is made insulating rigid plastic down, plastic housing not only plays insulating protection's effect, can also alleviate the middling weight of device, reach portable's effect, the bottom of 2 outer walls of lower casing is seted up porosely, the outer wall in fastener 3 and the inner wall fixed connection in hole, secondary winding 6's both ends and iron plate 13 fixed connection, it is connected to lower iron core 5 all to run through casing 2 down at the both ends of going up iron core 4, two the same fasteners 3 are installed to the outer wall symmetry of lower casing 2, fastener 3 just can accomplish the connection to the wire through only needing to press the button, it is very convenient and.

Preferably, the lower shell 2 is internally provided with a lower iron core 5, the outer wall of the lower iron core 5 is bonded with the inner wall of the lower shell 2, the outer wall of the lower iron core 5 is provided with a secondary winding 6, the outer wall of the secondary winding 6 is wound and connected with the outer wall of the lower iron core 5, two ends of the secondary winding 6 are electrically connected with the outer wall of an iron block 13, the bottom of an upper fixture block 14 is clamped with the top of a lower fixture block 15, the top of the lower shell 2 is provided with an arc-shaped groove, a cavity 8 is formed between the upper shell 1 and the lower shell 2, the cavity 8 and a measured current-carrying lead form a primary winding to achieve the measuring effect, the upper shell 1 is internally provided with an upper iron core 4, the outer wall of the upper iron core 4 is bonded with the inner wall of the upper shell 1, the outer wall of the upper shell 1 is provided with an upper fixture block 14, the outer wall of the upper fixture, a lower clamping block 15 is arranged right below the upper clamping block 14, the outer wall of the lower clamping block 15 is fixedly connected with the outer wall of the lower shell 2, a spherical groove 16 is formed in the top of the lower clamping block 15, and the clamping block is more compact in design when the device is closed, more convenient to open and convenient to use.

Wherein, the inside of the wire clamp 3 comprises a button 9, a spring 10, an elastic iron sheet 11, a stop block 12 and an iron block 13, the top of the wire clamp 3 is provided with a through hole, the outer wall of the button 9 is movably connected with the inner wall of the through hole, the top of the stop block 12 is fixedly connected with the top of the wire clamp 3, the bottom of the stop block 12 is fixedly connected with the right end of the top of the elastic iron sheet 11, the bottom of the spring 10 is fixedly connected with the bottom of the wire clamp 3, the top of the spring 10 is fixedly connected with the left end of the bottom of the elastic iron sheet 11, the right end of the elastic iron sheet 11 is welded with the bottom of the iron block 13, the bottoms of most of the buttons 9 are clamped with the top of the elastic iron sheet 11, when in use, the button 9 is only needed to be pressed, the button 9 presses the elastic iron sheet 11 to bend downwards, at the moment, the two end connecting wires of the measuring instrument are respectively connected to the, the effect that the wire is convenient to install and firm is achieved.

When the device is used, the button 9 is pressed, the button 9 presses the elastic iron sheet 11 to bend downwards, the connecting wires at two ends of the measuring instrument are respectively connected to the wire clamps at the lower end of the lower shell 2, then the button 9 is loosened, the elastic iron sheet 11 is bounced by the spring 10, so that the elastic iron sheet 11 is electrically connected with the connecting wires at two ends of the measuring instrument, the convenient and fast effect is achieved, after the measuring instrument is installed, the upper shell 1 is pulled upwards, the upper shell 1 is opened through the arranged hinge 7, a current-carrying lead wire to be measured penetrates through the cavity 8, the current-carrying lead wire penetrates through the cavity 8 to play a role of a primary winding, the transformation ratio is determined according to the number of turns of the primary winding penetrating through the iron core, and the number of turns is more, and the transformation; on the contrary, the less the number of the piercing turns, the larger the transformation ratio, so that the current-carrying wires of the same device for measuring currents with different sizes can be achieved, the function of the device is strong, secondly, the device is used through the cooperation of the upper clamping block 14 and the lower clamping block 15, the split and combination of the device are more convenient, the hinge 7 realizes the split rotation of the upper shell 1 and the lower shell 2, and the device is simple in structure, small and exquisite and very convenient to carry.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a portable split type current transformer, includes casing (1), casing (2) down, fastener (3) and hinge (7), its characterized in that: the right side of the outer wall of the upper shell (1) is rotatably connected with the outer wall of the hinge (7), the right side of the outer wall of the lower shell (2) is rotatably connected with the outer wall of the hinge (7), the outer wall of the lower shell (2) is symmetrically provided with two identical wire clamps (3), the lower shell (2) is internally provided with a lower iron core (5), the outer wall of the lower iron core (5) is bonded with the inner wall of the lower shell (2), the outer wall of the lower iron core (5) is provided with a secondary winding (6), the outer wall of the secondary winding (6) is wound and connected with the outer wall of the lower iron core (5), the top of the lower shell (2) is provided with an arc-shaped groove, the middle groove of the upper shell (1) and the lower shell (2) forms a cavity (8), the upper iron core (4) is arranged inside the upper shell (1), the outer wall of the upper iron core (4) is bonded with the inner, the outer wall of the upper shell (1) is provided with an upper clamping block (14), the outer wall of the upper clamping block (14) is fixedly connected with the outer wall of the upper shell (1), a spherical convex block is fixedly mounted at the bottom of the upper clamping block (14), a lower clamping block (15) is arranged under the upper clamping block (14), the outer wall of the lower clamping block (15) is fixedly connected with the outer wall of the lower shell (2), and a spherical groove (16) is formed in the top of the lower clamping block (15).

2. A portable split type current transformer according to claim 1, characterized in that: the inside of fastener (3) includes button (9), spring (10), elasticity iron sheet (11), dog (12) and iron plate (13), the through-hole has been seted up at the top of fastener (3), the outer wall of button (9) and the inner wall swing joint of through-hole, the top of dog (12) and the top fixed connection of fastener (3), the bottom of dog (12) and the right-hand member fixed connection at elasticity iron sheet (11) top, the bottom of spring (10) and the bottom fixed connection of fastener (3), the top of spring (10) and the left end fixed connection of elasticity iron sheet (11) bottom, the right-hand member of elasticity iron sheet (11) and the bottom welding of iron plate (13), the bottom of most button (9) and the top joint of elasticity iron sheet (11).

3. A portable split type current transformer according to claim 1, characterized in that: the bottom of the outer wall of the lower shell (2) is provided with a hole, the outer wall of the wire clamp (3) is fixedly connected with the inner wall of the hole, the two ends of the secondary winding (6) are fixedly connected with the iron block (13), and the two ends of the upper iron core (4) penetrate through the lower shell (2) and are connected to the lower iron core (5).

4. A portable split type current transformer according to claim 1, characterized in that: go up the material of casing (1), lower casing (2) and be insulating rigid plastic and make, the both ends of secondary winding (6) and the outer wall electric connection of iron plate (13), go up the bottom of fixture block (14) and the top joint of fixture block (15) down.