CN213844978U

CN213844978U - Outdoor composite insulation current transformer

Info

Publication number: CN213844978U
Application number: CN202023296172.8U
Authority: CN
Inventors: 倪林攀
Original assignee: Yueqing City Kefa Electronic Co ltd
Current assignee: Yueqing City Kefa Electronic Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-07-30
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses an outdoor compound insulation current transformer, including protective housing and current transformer body, be provided with the base on the infrabasal plate of protective housing, the top of current transformer body is equipped with U type frame, be equipped with the receipts line roller in the U type frame, one side of U type frame is equipped with the carousel, one side welding of carousel has the handle, one side welding of U type frame has the backup pad, the top of backup pad is equipped with miniature cylinder, miniature cylinder's output is connected with the lifter plate, the spacing groove has been seted up to the bottom of lifter plate, the spacing groove is the cooperation setting with the handle. The utility model discloses a manual turning handle for the handle drives the carousel and drives to receive the line roller and rotate and receive the line, through starting miniature cylinder work, makes miniature cylinder drive lifter plate downstream, because spacing groove and handle are the cooperation setting, thereby can block the handle through the spacing groove and prevent to receive the line roller unwrapping wire, avoids the connecting wire to receive external force and pulls.

Description

Outdoor composite insulation current transformer

Technical Field

The utility model relates to a current transformer technical field, concretely relates to outdoor compound insulation current transformer.

Background

The principle of the current transformer is based on the electromagnetic induction principle, the current transformer is composed of a closed iron core and a winding, the number of turns of a primary side winding of the current transformer is small, and the primary side winding is connected in series with a circuit of current to be measured, so that all current of the circuit always flows through the current transformer, the number of turns of a secondary side winding is large, the secondary side winding is connected in series with a measuring instrument and a protection loop, when the current transformer works, a secondary side loop of the current transformer is always closed, therefore, the impedance of the series coil of the measuring instrument and the protection loop is small, the working state of the current transformer is close to a short circuit, the current transformer converts large current on the primary side into small current on the secondary side for use, and the secondary side cannot be opened.

The existing insulated current transformer is easy to cause poor line contact and even fall off when a connecting wire connected with a power supply is pulled by external force in the using process, so that the device can not work and lose the function.

Therefore, it is necessary to invent an outdoor composite insulated current transformer to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an outdoor compound insulation current transformer, through manual turning handle for the handle drives the carousel and drives through the pivot and receive the line roller rotation and receive the line, through starting miniature cylinder work, makes miniature cylinder pass through the telescopic link and drive lifter plate downstream, because the spacing groove all is the cooperation setting with the handle, thereby can block the handle through the spacing groove and prevent to receive line roller gyration unwrapping wire, the connecting wire of avoiding connecting power source receives external force and pulls, with the above-mentioned weak point in the solution technique.

In order to achieve the above object, the present invention provides the following technical solutions: an outdoor composite insulation current transformer comprises a protective box and a current transformer body, wherein a base is arranged on an inner bottom plate of the protective box, the current transformer body is arranged at the top of the base, a U-shaped frame is arranged at the top end of the current transformer body, a wire take-up roller is arranged in the U-shaped frame, a turntable is arranged on one side of the U-shaped frame, the center of one side of the turntable penetrates through a rotating shaft and extends into the U-shaped frame to be rotationally connected with the wire take-up roller, a handle is welded on the periphery of the outer edge of one side of the turntable, which is far away from the U-shaped frame, a horizontally arranged supporting plate is welded on the top of one side of the U-shaped frame, a vertically arranged micro cylinder is arranged at the top end of the supporting plate, an output end of the micro cylinder penetrates through the supporting plate through a telescopic rod and is connected with a lifting plate, and a plurality of limiting grooves are formed in the bottom end of the lifting plate at equal intervals, every the spacing groove all is the cooperation setting with the handle.

Preferably, the width dimension of the limiting groove is the same as that of the lifting plate, and the width dimension of the limiting groove is smaller than the length dimension of the handle.

Preferably, the inside of base is equipped with interior cavity, a plurality of recesses, every have been seted up to the roof equidistant of interior cavity the interior roof of recess all is connected with buffer spring, every buffer spring's bottom all is connected with the spliced pole, every the spliced pole all is sliding connection with corresponding recess.

Preferably, the bottom of every spliced pole all is connected with the blotter, every the bottom of blotter all is connected with the bumping post, every the bottom of bumping post all with interior bottom plate fixed connection of inner chamber.

Preferably, the front side of the protective box is rotatably connected with a box door through a hinge, and one side of the box door is fixedly connected with a handle through a bolt.

Preferably, a plurality of first heat dissipation channels are arranged on the inner wall of one side of the protection box at equal intervals from top to bottom, one end of each first heat dissipation channel is connected with a second heat dissipation channel which is obliquely arranged, the bottom end of each second heat dissipation channel is connected with a third heat dissipation channel, one side of each third heat dissipation channel is provided with a fourth heat dissipation channel, and one end of each fourth heat dissipation channel extends to the outer side wall of the protection box.

Preferably, the height of the third heat dissipation channel is larger than that of the fourth heat dissipation channel, and a filter screen is arranged at one end of the fourth heat dissipation channel.

In the technical scheme, the utility model provides a technological effect and advantage:

1. the handle is manually rotated, the handle drives the turntable to drive the take-up roller to rotate and take up the wire through the rotating shaft, the micro cylinder is started to work, the micro cylinder drives the lifting plate to move downwards through the telescopic rod, and the limiting grooves are matched with the handle, so that the handle can be clamped by the limiting grooves to prevent the take-up roller from rotating and paying off, and a connecting wire connected with a power supply is prevented from being pulled by external force;

2. the heat in the protective box is discharged out of the box along with the air sequentially through the first heat dissipation channel, the second heat dissipation channel, the third heat dissipation channel and the fourth heat dissipation channel, and the second heat dissipation channel is obliquely arranged, so that rainwater can be effectively prevented from entering the protective box while heat is dissipated, impurities can be effectively prevented from entering the protective box through the filter screen, and the service life of the current transformer body can be prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the protective box of the present invention;

FIG. 3 is a schematic diagram of the structure of the elevating plate of the present invention;

fig. 4 is an enlarged view of the area a in fig. 2 according to the present invention;

fig. 5 is an enlarged view of the area B in fig. 2 according to the present invention.

Description of reference numerals:

1. a protective box; 2. a current transformer body; 3. a base; 4. a U-shaped frame; 5. a wire take-up roller; 6. a turntable; 7. a handle; 8. a support plate; 9. a micro cylinder; 10. a lifting plate; 11. a limiting groove; 12. a box door; 13. a handle; 14. a filter screen; 15. a first heat dissipation channel; 16. a second heat dissipation channel; 17. a third heat dissipation channel; 18. a fourth heat dissipation channel; 19. an inner chamber; 20. a groove; 21. a buffer column; 22. a cushion pad; 23. connecting columns; 24. a buffer spring.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides an outdoor composite insulation current transformer as shown in figures 1-5, which comprises a protective box 1 and a current transformer body 2, wherein a base 3 is arranged on the inner bottom plate of the protective box 1, the current transformer body 2 is arranged on the top of the base 3, a U-shaped frame 4 is arranged on the top end of the current transformer body 2, a wire-receiving roller 5 is arranged in the U-shaped frame 4, a rotary table 6 is arranged on one side of the U-shaped frame 4, the center of one side of the rotary table 6 is penetrated and extended into the U-shaped frame 4 through a rotary shaft to be rotationally connected with the wire-receiving roller 5, a handle 7 is welded on the periphery of the outer edge of one side of the rotary table 6 far away from the U-shaped frame 4, a horizontally arranged supporting plate 8 is welded on the top of one side of the U-shaped frame 4 close to the rotary table 6, a vertically arranged micro cylinder 9 is arranged on the top end of the supporting plate 8, the output end of the micro cylinder 9 is connected with a lifting plate 10 after penetrating through the supporting plate 8 through a telescopic rod, a plurality of spacing grooves 11 have been seted up to lifter plate 10's bottom equidistant, every spacing groove 11 all is the cooperation setting with handle 7.

Further, in the above technical solution, the width dimension of the limiting groove 11 is the same as the width dimension of the lifting plate 10, and the width dimension of the limiting groove 11 is smaller than the length dimension of the handle 7.

Further, in above-mentioned technical scheme, the inside of base 3 is equipped with interior chamber 19, a plurality of recesses 20 have been seted up to the roof of interior chamber 19 equidistant, every the interior roof of recess 20 all is connected with buffer spring 24, every buffer spring 24's bottom all is connected with spliced pole 23, every spliced pole 23 all is sliding connection with corresponding recess 20, every spliced pole 23's bottom all is connected with blotter 22, every blotter 22's bottom all is connected with buffer column 21, every buffer column 21's bottom all with interior bottom plate fixed connection of interior chamber 19, through buffer spring 24, blotter 22 and buffer column 21's effect to can effectually improve current transformer body 2's buffering damping performance, and then can improve current transformer body 2's life.

Further, in the above technical solution, a door 12 is rotatably connected to the front side of the protective box 1 through a hinge, and a handle 13 is fixedly connected to one side of the door 12 through a bolt.

Furthermore, in the above technical scheme, a plurality of first heat dissipation channels 15 are arranged on the inner wall of one side of the protection box 1 at equal intervals from top to bottom, one end of each first heat dissipation channel 15 is connected with a second heat dissipation channel 16 which is obliquely arranged, the bottom end of each second heat dissipation channel 16 is connected with a third heat dissipation channel 17, one side of each third heat dissipation channel 17 is provided with a fourth heat dissipation channel 18, one end of each fourth heat dissipation channel 18 extends to the outer side wall of the protection box 1, and heat in the protection box 1 is discharged out of the box along with air through the first heat dissipation channels 15, the second heat dissipation channels 16, the third heat dissipation channels 17 and the fourth heat dissipation channels 18 in sequence, and the second heat dissipation channels 16 are obliquely arranged, so that rainwater can be effectively prevented from entering the protection box 1 while heat dissipation.

Further, in the above technical solution, the height of the third heat dissipation channel 17 is greater than the height of the fourth heat dissipation channel 18, and a filter screen 14 is disposed at one end of the fourth heat dissipation channel 18, so that impurities can be effectively prevented from entering the protection box 1 under the action of the filter screen 14.

This practical theory of operation:

referring to the attached drawings 1-5 of the specification, when a wire is taken up, firstly, a handle 7 is manually rotated, the handle 7 drives a rotary table 6 to rotate, the rotary table 6 drives a wire take-up roller 5 to rotate for taking up the wire through a rotating shaft, when the wire is taken up, a micro cylinder 9 is started to work, the micro cylinder 9 drives a lifting plate 10 to move downwards through a telescopic rod, and the limiting grooves 11 are matched with the handle 7, so that the handle 7 is clamped through the limiting grooves 11 to prevent the wire take-up roller 5 from rotating for paying off.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides an outdoor compound insulation current transformer, includes protective housing (1) and current transformer body (2), its characterized in that: the inner bottom plate of the protective box (1) is provided with a base (3), the current transformer body (2) is arranged at the top of the base (3), the top end of the current transformer body (2) is provided with a U-shaped frame (4), a wire take-up roller (5) is arranged in the U-shaped frame (4), one side of the U-shaped frame (4) is provided with a turntable (6), one side center of the turntable (6) penetrates through the U-shaped frame (4) through a rotating shaft and extends into the U-shaped frame (4) to be rotatably connected with the wire take-up roller (5), the periphery of the outer edge of one side, far away from the U-shaped frame (4), of the turntable (6) is welded with a handle (7), the top of one side, close to the turntable (6), of the U-shaped frame (4) is welded with a horizontally arranged supporting plate (8), the top end of the supporting plate (8) is provided with a vertically arranged micro air cylinder (9), the output end of the air cylinder (9) penetrates through the supporting plate (8) through a micro telescopic rod and then is connected with a lifting plate (10), a plurality of spacing grooves (11) have been seted up to the equidistant bottom of lifter plate (10), every spacing groove (11) all are the cooperation setting with handle (7).

2. The outdoor composite insulated current transformer of claim 1, characterized in that: the width dimension of the limiting groove (11) is the same as that of the lifting plate (10), and the width dimension of the limiting groove (11) is smaller than the length dimension of the handle (7).

3. The outdoor composite insulated current transformer of claim 1, characterized in that: the inside of base (3) is equipped with interior cavity (19), a plurality of recesses (20), every have been seted up to the roof equidistant of interior cavity (19) the interior roof of recess (20) all is connected with buffer spring (24), every the bottom of buffer spring (24) all is connected with spliced pole (23), every spliced pole (23) all are sliding connection with corresponding recess (20).

4. The outdoor composite insulated current transformer of claim 3, characterized in that: every the bottom of spliced pole (23) all is connected with blotter (22), every the bottom of blotter (22) all is connected with cushion column (21), every the bottom of cushion column (21) all with the interior bottom plate fixed connection of interior cavity (19).

5. The outdoor composite insulated current transformer of claim 1, characterized in that: the front side of the protective box (1) is rotatably connected with a box door (12) through a hinge, and one side of the box door (12) is fixedly connected with a handle (13) through a bolt.

6. The outdoor composite insulated current transformer of claim 1, characterized in that: a plurality of first heat dissipation channels (15) have been seted up to one side inner wall from the top down equidistant of protective housing (1), every the one end of first heat dissipation channel (15) all is connected with second heat dissipation channel (16) that are the slope setting, every the bottom of second heat dissipation channel (16) all is connected with third heat dissipation channel (17), every one side of third heat dissipation channel (17) all is equipped with fourth heat dissipation channel (18), every the one end of fourth heat dissipation channel (18) all extends to on protective housing (1) lateral wall.

7. The outdoor composite insulated current transformer of claim 6, characterized in that: the height dimension of the third heat dissipation channel (17) is larger than that of the fourth heat dissipation channel (18), and a filter screen (14) is arranged at one end of the fourth heat dissipation channel (18).