CN213149215U

CN213149215U - Polarity detector for current transformer

Info

Publication number: CN213149215U
Application number: CN202021936188.8U
Authority: CN
Inventors: 刘宇国
Original assignee: Zhejiang Qianzhou Electric Appliance Co ltd
Current assignee: Zhejiang Qianzhou Electric Appliance Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-05-07
Anticipated expiration: 2030-09-07

Abstract

The utility model discloses a current transformer polarity detector, its structure includes the organism, the utility model discloses a set up complementary unit in the upper left end of organism rear side, when the connecting wire inserts in the wiring end, the spring begins to compress, make spacing ball compress to in the fixed block, carry on spacing fixed to the connecting wire with this, and when reinforcing the clamp force, the depth of rotation of adjustment nut alright, reached and be convenient for carry out the advantage fixed to the connecting wire, through setting up clamping device in the upper left end of organism front side, through rotating the handle, the rotary disk begins to rotate, make connecting rod normal running fit then, make the clamp splice slide on the slider with this, insert the inserted bar to the spacing groove again at last, play spacing fixed effect with this to the clamp splice, reached and avoided influencing organism work, the advantage of work efficiency has been strengthened.

Description

Polarity detector for current transformer

Technical Field

The utility model relates to a polarity detector technical field, concretely relates to current transformer polarity detector.

Background

The current transformer is an instrument for converting a large primary side current into a small secondary side current to measure according to the electromagnetic induction principle, and consists of a closed iron core and a winding, wherein the primary side winding has few turns and is connected in a line of the current to be measured in series, so that all the current of the line always flows through the current transformer, the secondary side winding has more turns and is connected in series in a measuring instrument and a protection loop, and a 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, the working state of the current transformer is close to short circuit, the current transformer converts the large primary side current into the small secondary side current to measure, the secondary side cannot be opened, the vocabulary introduces the working principle, parameter description, classification, use introduction and the like of the current transformer, and the polarity tester can test the polarities of, the transformation ratio test can be carried out, the power frequency sampling current can be accurately output, the test range is wide, and therefore the polarity detector is required to work in an auxiliary mode.

Because a current transformer polarity detector, when connecting wire was pegged graft to wiring end and earthing terminal usually, all directly pegged graft, and do not have outside fixing device to press from both sides tightly, make external connection line not hard up easily to the work of influence organism has reduced work efficiency.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the prior art not enough, the current transformer polarity detector is provided at present, and the problem of work efficiency has been reduced because current transformer polarity detector has solved because the line of connection all directly pegs graft when pegging graft wiring end and earthing terminal usually, and does not have outside fixing device to press from both sides tightly, makes the external connection line not hard up easily to influence the work of organism.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a polarity detector of a current transformer, which comprises a machine body, an auxiliary mechanism and a clamping device, the left upper end of the rear side of the machine body is provided with a wiring end, the left upper end of the front side of the wiring end is provided with a grounding end, the middle part of the upper end of the machine body is fixed with the display screen into a whole, the middle part of the upper right end of the machine body is fixed with the control board, the right upper end of the rear side of the machine body is provided with a power interface, the horizontal right side of the power interface is provided with a switch, the upper end of the rear side of the machine body is rotationally connected with the turnover cover, the lower end of the auxiliary mechanism is fixed with the machine body through a bolt, the lower end of the clamping device is fixed with the machine body into a whole, the auxiliary mechanism consists of a fixed block, a slotted hole and a limiting device, the upper left end of the fixing block is provided with a slotted hole, the middle part of the front end of the fixing block is fixed with the limiting device, and the lower end of the fixing block is fixed with the machine body through a bolt.

Furthermore, stop device comprises nut, spring and spacing ball, the nut right-hand member is fixed mutually with the spring, the spring right-hand member is fixed as an organic whole with spacing ball, and the nut right-hand member passes through threaded connection with the fixed block, spacing ball right-hand member closely laminates with the fixed block.

Furthermore, the clamping device comprises a rotating disk, a rotating shaft, a connecting rod, a clamping block, an inserting rod, a sliding block, a limiting groove and a handle, the upper end of the front side of the rotating disk is fixed with the rotating shaft, the upper end of the rotating shaft is in through connection with the connecting rod, the upper left end of the connecting rod is fixed with the clamping block into a whole, the upper left end of the clamping block is in through connection with the inserting rod, the lower left end of the clamping block is in sliding connection with the sliding block, the limiting groove is formed in the upper end of the sliding block, the right end of the rotating disk is fixed with the handle, and the lower end of the sliding.

Furthermore, a groove is formed in the middle of the upper end of the fixing block, the radius of the groove formed in the upper end of the fixing block is 2cm, and the fixing block is in an octahedral square shape.

Furthermore, stop device is provided with eight, and stop device equidistance distribute with on each face of fixed block octahedron.

Furthermore, nut upper end surface is provided with the screw thread, and the screw thread interval that the nut set up is 1 mm.

Furthermore, the handle is long-strip-shaped, and the surface of the handle is provided with anti-skid grains.

Furthermore, four limiting grooves are formed in the middle of the upper end of the sliding block, the limiting grooves are distributed in the middle of the upper end of the sliding block at equal intervals, and the clamping blocks and the sliding block can slide maximally for 4 cm.

Furthermore, the machine body is made of stainless steel.

Furthermore, the connecting rod is made of aluminum alloy.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

the method has the advantages that: the utility model relates to a current transformer polarity detector, through setting up complementary unit in organism rear side upper left end, when the connecting wire inserted to the wiring end, the spring began to compress for during spacing ball compression to the fixed block, carried on spacing fixedly to the connecting wire with this, and when reinforcing the clamp force, the rotatory degree of depth of adjustment nut alright, reached and be convenient for carry out the advantage fixed to the connecting wire.

The method has the advantages that: the utility model relates to a current transformer polarity detector, through setting up clamping device in organism front side upper left end, through rotating the handle, the rotary disk begins to rotate, makes connecting rod normal running fit then to this makes the clamp splice slide on the slider, inserts the inserted bar to the spacing groove again at last, plays spacing fixed effect with this to the clamp splice, has reached and has avoided influencing organism work, has strengthened work efficiency's advantage.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the auxiliary mechanism of the present invention;

FIG. 3 is a schematic cross-sectional structure view of the auxiliary mechanism of the present invention;

fig. 4 is a schematic view of the internal structure of the limiting device of the present invention;

fig. 5 is a schematic structural view of the clamping device of the present invention.

In the figure: the device comprises a machine body-1, an auxiliary mechanism-2, a clamping device-3, a terminal-4, a grounding terminal-5, a display screen-6, a control panel-7, a power interface-8, a switch-9, a flip-cover-10, a fixing block-21, a slotted hole-22, a limiting device-23, a nut-231, a spring-232, a limiting ball-233, a rotating disc-31, a rotating shaft-32, a connecting rod-33, a clamping block-34, an inserting rod-35, a sliding block-36, a limiting groove-37 and a handle-38.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Please refer to fig. 1, the utility model provides a current transformer polarity detector here through the improvement, including organism 1, wiring end 4 has been seted up to the upper left end of 1 rear side of organism, the upper left end of 4 front sides of wiring end is provided with earthing terminal 5, 1 upper end middle part of organism is fixed integrative with display screen 6, 1 upper right end middle part of organism is fixed mutually with control panel 7, 1 rear side upper right end of organism is provided with

power source

8, 8 horizontal right sides of power source are provided with switch 9, 1 rear side upper end of organism is rotated with flip 10 and is connected, 2 lower extremes of complementary unit and organism 1 pass through the bolt fastening, 3 lower extremes of clamping device and organism 1 are fixed integrative, convenient to use person observes display screen 6.

Please refer to fig. 2 and fig. 3, the utility model provides a current transformer polarity detector here through the improvement, including complementary unit 2 and

clamping device

3, 3 lower extremes of clamping device are fixed as an organic whole with organism 1, complementary unit 2 is by fixed block 21, slotted hole 22 and stop device 23 are constituteed, slotted hole 22 has been seted up to the upper left end of fixed block 21, fixed block 21 upper end middle part is seted up flutedly, the recess radius of seting up on fixed block 21 is 2cm, and fixed block 21 is octahedral square form, fixed block 21 front end middle part is fixed mutually with stop device 23, stop device 23 is provided with eight, and stop device 23 equidistance distributes and is gone up with the every one side of fixed block 21 octahedral, fixed block 21 lower extreme passes through the bolt fastening with organism 1, be convenient for clamping device 3 better work.

Please refer to fig. 4, the utility model provides a current transformer polarity detector here through the improvement, including stop device 23 by nut 231, spring 232 and spacing ball 233 constitute, nut 231 right-hand member is fixed mutually with spring 232, nut 231 upper end surface is provided with the screw thread, and the screw thread interval that nut 231 set up is 1mm, spring 232 right-hand member is fixed as an organic whole with spacing ball 233, nut 231 right-hand member passes through threaded connection with fixed block 21, spacing ball 233 right-hand member closely laminates with fixed block 21, spring 232 is convenient for spacing ball 233 and is better to be worked.

Referring to fig. 5, the present invention provides a polarity detector for a current transformer by improvement, comprising a clamping device 3, a rotating disc 31, a rotating shaft 32, a connecting rod 33, a clamping block 34, an inserting rod 35, a sliding block 36, a limiting groove 37 and a handle 38, wherein the upper end of the front side of the rotating disc 31 is fixed with the rotating shaft 32, the upper end of the rotating shaft 32 is connected with the connecting rod 33 in a penetrating manner, the upper left end of the connecting rod 33 is fixed with the clamping block 34 into a whole, the upper left end of the clamping block 34 is connected with the inserting rod 35 in a penetrating manner, the lower left end of the clamping block 34 is connected with the sliding block 36 in a sliding manner, the upper end of the sliding block 36 is provided with the limiting groove 37, the middle of the upper end of the sliding block 36 is provided with four limiting grooves 37, the limiting grooves are equidistantly distributed in the middle of the upper end of the sliding block 36, the maximum slidable length of the clamping block 34 and the sliding block 36 is 4cm, the anti-slip lines prevent the user from rusting.

The spring 232 in this patent, the spring is a mechanical part that utilizes elasticity to come work, and the part of making with elastic material takes place to warp under the exogenic action, and the reconversion after removing external force also makes "spring", also makes "spring steel, and the kind of spring is complicated various, divides according to the shape, mainly has coil spring, spiral spring, leaf spring, abnormal shape spring etc..

The working principle is as follows:

firstly, the method comprises the following steps: the user can carry the device to the place to be used, then horizontally place the machine body 1 to the place to be used, open the flip cover 10 upwards, then insert the external power line into the power interface 8, and then insert the external connecting line into the wiring terminal 4 and the grounding terminal 5 respectively;

secondly, the method comprises the following steps: when an external connection wire is inserted into the terminal 4, the spring 232 starts to compress, so that the limiting ball 233 is compressed into the fixing block 21, thereby limiting and fixing the connection wire, and when the clamping force is enhanced, a user can rotate the nut 231 through an external bolt knife, thereby adjusting the rotation depth of the nut 231;

thirdly, the method comprises the following steps: and when carrying out spacing fixed to the connecting wire of ground terminal 5, the user makes rotary disk 31 begin to rotate through rotating handle 38, makes connecting rod 33 rotate then, makes clamp splice 34 slide on slider 36 with this, inserts inserted bar 35 to spacing groove 37 again at last to this plays spacing fixed effect to clamp splice 34, presses switch 9 afterwards, and organism 1 alright begin work, and user's accessible adjusting control board 7, and the user of being convenient for observes display screen 6.

Claims

1. A polarity detector for a current transformer comprises a machine body (1), wherein a wiring end (4) is arranged at the left upper end of the rear side of the machine body (1), a grounding end (5) is arranged at the left upper end of the front side of the wiring end (4), the middle part of the upper end of the machine body (1) is fixed with a display screen (6) into a whole, the middle part of the right upper end of the machine body (1) is fixed with a control panel (7), a power supply interface (8) is arranged at the right upper end of the rear side of the machine body (1), a switch (9) is arranged on the horizontal right side of the power supply interface (8), and the upper end of the rear side of the machine;

the method is characterized in that: still include complementary unit (2) and clamping device (3), complementary unit (2) lower extreme passes through the bolt fastening with organism (1), clamping device (3) lower extreme is fixed as an organic whole with organism (1), complementary unit (2) comprises fixed block (21), slotted hole (22) and stop device (23), slotted hole (22) have been seted up to fixed block (21) upper left end, fixed block (21) front end middle part is fixed mutually with stop device (23), fixed block (21) lower extreme passes through the bolt fastening with organism (1).

2. The polarity detector of claim 1, wherein: stop device (23) comprises nut (231), spring (232) and spacing ball (233), nut (231) right-hand member is fixed mutually with spring (232), spring (232) right-hand member is fixed as an organic whole with spacing ball (233), and nut (231) right-hand member passes through threaded connection with fixed block (21), spacing ball (233) right-hand member closely laminates with fixed block (21).

3. The polarity detector of claim 1, wherein: the clamping device (3) is composed of a rotating disk (31), a rotating shaft (32), a connecting rod (33), a clamping block (34), an inserting rod (35), a sliding block (36), a limiting groove (37) and a handle (38), wherein the upper end of the front side of the rotating disk (31) is fixed with the rotating shaft (32), the upper end of the rotating shaft (32) is communicated with the connecting rod (33), the upper left end of the connecting rod (33) is fixed with the clamping block (34) into a whole, the upper left end of the clamping block (34) is communicated with the inserting rod (35), the lower left end of the clamping block (34) is connected with the sliding block (36) in a sliding mode, the limiting groove (37) is formed in the upper end of the sliding block (36), the right end of the rotating disk (31) is fixed with the handle (38), and the lower end of the sliding block (36) is fixed with the machine.

4. The polarity detector of claim 1, wherein: the middle of the upper end of the fixed block (21) is provided with a groove, the radius of the groove formed in the upper end of the fixed block (21) is 2cm, and the fixed block (21) is in an octahedral square shape.

5. The polarity detector of claim 1, wherein: stop device (23) are provided with eight, and stop device (23) equidistance distribute with each side of fixed block (21) octahedron.

6. The polarity detector of claim 2, wherein: nut (231) upper end surface is provided with the screw thread, and the screw thread interval that nut (231) set up is 1 mm.

7. The polarity detector of claim 3, wherein: the handle (38) is long-strip-shaped, and the surface of the handle (38) is provided with anti-skid grains.

8. The polarity detector of claim 3, wherein: four spacing grooves (37) have been seted up to slider (36) upper end middle part, and the equidistance distributes and slider (36) upper end middle part, and clamp splice (34) and slider (36) maximum slidable length are 4 cm.