CN212810037U

CN212810037U - Open-close type puncture current transformer

Info

Publication number: CN212810037U
Application number: CN202022085986.0U
Authority: CN
Inventors: 刘琪
Original assignee: Hubei Xiasen Power Co ltd
Current assignee: Hubei Xiasen Power Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-03-26
Anticipated expiration: 2030-09-22

Abstract

The utility model provides an open-close type puncture current transformer, includes half box body on a left side and half box body on the right side, and half box body one end on a left side is articulated with half box body one end on the right side, and the other end hasp of the half box body on a left side other end and half box body on the right side is connected, half box body front side on the right side transversely is equipped with the U-shaped fixing base, and U-shaped fixing base upper portion is equipped with and is used for having the fixture that compresses tightly the cable, is equipped with the puncture mechanism who is located U-shaped fixing base lower part under fixture, half box body front side on a left side is equipped with the closed lid, and the closed lid is closed. The utility model discloses open the back at half box body on a left side and half box body on a right side, U-shaped fixing base and closed cover, the cable can directly be put into along the opening direction of U-shaped fixing base, can not take place to interfere with between the box body, and the position that need not the clamp splice moreover is transferred very high, and the installation is convenient with the dismantlement, a body coupling of closed cover and half box body on a left side, the utility model discloses an wholeness is stronger, compact structure, convenient to carry.

Description

Open-close type puncture current transformer

Technical Field

The utility model relates to a current transformer especially relates to an open-close type puncture current transformer.

Background

The current transformer in the prior art generally comprises two sections of shells which are oppositely arranged up and down, wherein one section of iron core is respectively arranged in the two sections of shells, the two sections of iron cores are butted to form an annular iron core after the two sections of shells are buckled, and a cable passes through the annular iron core so as to test the cable. When voltage signals need to be acquired from the cable, the cable with the insulating layer needs to be powered in a traditional mode of peeling off the insulating layer, the power-taking mode is complex in operation and low in efficiency, the charged part is exposed in the air, the power utilization safety is seriously affected, and even the electric shock danger exists during operation. Some products are also available on the market, which use a puncturing method to puncture the insulation layer of the cable to obtain a voltage signal, but such products generally have the following defects: (1) the structure is comparatively complicated and be split type between each spare part, need a large amount of spare parts of dismouting when the installation of cooperation cable, consequently very easily causes losing of spare part, and the dismouting process is very complicated. (2) Because the thickness of cable is different, consequently the product on the market can't match with the cable of different thickness, and the suitability is relatively poor.

A puncture current transformer is disclosed in chinese patent No. CN209374261U, and belongs to the technical field of current transformers. The clamping block is arranged at one end of the locking shaft, and the other end of the locking shaft downwards enters the lower shell; the puncture mechanism is arranged in the lower shell under the clamping block, the tip end of the puncture mechanism penetrates out of the upper surface of the lower shell, the height of the tip end of the adjusting end penetrating out of the surface of the lower shell is adjusted, and the tip end of the adjusting end penetrates through an insulating layer of a cable compressed by the clamping block to lead out a voltage signal of the cable. This puncture current transformer adopts monolithic structure, need not to cancel any spare part at the dismouting in-process of cable, and fundamentally has stopped losing of spare part, but this utility model has following defect: 1. the clamping block is horizontally arranged at one end of the locking shaft, the L-shaped locking shaft is easy to bend, deform and even break when clamped, and 2, only part of the locking nut is exposed outside and is not easy to rotate to adjust the position of the clamping block; 3. the clamping block and the locking shaft are exposed outside, so that the clamping block and the locking shaft are easy to collide and damage when falling off and are not easy to store and carry; 4. when the cable is fixed, one side of the front part is opened, and the cable is easy to separate, so that the puncture needle is bent; 5. when the cable is installed, the cable needs to be obliquely placed into the front fixing groove, the position of the clamping block needs to be adjusted to be very high, and the cable is inconvenient to install and disassemble.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide an open-close type puncture current transformer, the convenience is installed and is fixed the cable.

The utility model provides a technical scheme that its technical problem adopted: the open-close type puncture current transformer comprises a left half box body and a right half box body, wherein one end of the left half box body is hinged to one end of the right half box body, the other end of the left half box body is connected with the other end of the right half box body in a lock mode, a left iron core and a right iron core are arranged in the left half box body and the right half box body respectively, after the left half box body and the right half box body are locked, the left iron core and the right iron core are in butt joint to form a penetrating ring, a cable penetrates through the penetrating ring, a U-shaped fixing seat is transversely arranged on the front side of the right half box body, a clamping mechanism used for compressing the cable is arranged on the upper portion of the U-shaped fixing seat, a puncture mechanism located on the lower portion of the U-shaped fixing seat is arranged under the clamping mechanism, a closed cover is arranged on the front side of.

In order to further perfect, fixture includes clamp splice and clamp splice adjust knob, U-shaped fixing base upper portion is equipped with the slip chamber, and slip chamber slidable mounting has the clamp splice, the slip chamber lower extreme is equipped with clamp splice telescopic mouth, and the slip chamber upper end is equipped with the knob installing port, rotates on the knob installing port and installs clamp splice adjust knob, clamp splice adjust knob lower extreme is equipped with down interior hexagonal hole, and interior hexagonal hole internal fixation has the hexagon nut stick down, clamp splice upper end fixedly connected with screw rod, screw rod and hexagon nut stick threaded connection.

Further perfection, clamp splice slidable mounting is in the slip chamber, and the both sides inner wall in slip chamber is equipped with the spacing groove, the clamp splice both sides are equipped with the spacing lug with spacing groove complex.

Further perfection, be equipped with the annular mounting groove with knob installing port complex on the clamp splice adjust knob lateral wall.

Further perfect, clamp splice adjust knob upper end is equipped with the interior hexagonal hole of going up with interior hexagonal hole intercommunication down, and the inscribed circle diameter of going up interior hexagonal hole is greater than the diameter of screw, and the inscribed circle diameter of going up interior hexagonal hole is less than the inscribed circle diameter of hexagonal nut stick.

Further perfect, the puncture mechanism includes that pjncture needle and regulation end turn round, and the through-hole of turning round the intercommunication with the regulation end of puncture mechanism is seted up to U-shaped fixing base lower part, and the pjncture needle of puncture mechanism is worn out from the side surface on U-shaped fixing base lower part, and the regulation end is turned round the height that the regulation pjncture needle wore out, and the regulation end is turned round the regulation pjncture needle and is punctureed the insulating layer of the cable that is compressed tightly by the clamp splice.

Further perfect, puncture mechanism is still including the puncture piece that is used for connecting voltage signal and draws forth the wire, and the puncture piece is fixed in the through-hole lateral wall, the pjncture needle passes the puncture piece from bottom to top and with puncture piece threaded connection, the bottom of pjncture needle is fixed with the insulating cover, insulating cover fixed connection adjust the end and turn round, be equipped with limiting flange on the insulating cover, be equipped with on the through-hole inner wall with limiting flange cooperation sliding connection's spacing vallecular cavity.

Further perfection, the U-shaped fixing seat is provided with a signal transmission port for being connected with an internal circuit board, and the signal transmission port can be used for inserting signal output equipment.

Further perfection, the closed cover inboard is equipped with spacing boss, is equipped with the concave arc face with cable surface complex on the spacing boss.

Compared with the prior art, the utility model discloses profitable effect is: 1. the clamping mechanism and the puncture mechanism of the utility model are respectively arranged at the upper and lower parts of the U-shaped fixed seat, the fixing effect on the cable is good, and the U-shaped fixed seat is not easy to bend and deform; 2. the clamping block of the clamping mechanism can be retracted into the U-shaped fixed seat in an up-and-down telescopic manner, so that the clamping block is not easy to damage; 3. the clamping block and the puncture needle are convenient to adjust, and are easy and labor-saving; 4. the closing cover is arranged on the front side of the left half box body and is closed with the opening of the U-shaped fixing seat after the left half box body and the right half box body are buckled, so that a puncture needle can be prevented from being bent due to the separation of a cable, and the positioning effect on the cable is enhanced; 5. the opening direction of the closing cover is the same as that of the left half box body, after the left half box body and the right half box body, the U-shaped fixing seat and the closing cover are opened, the cable can be directly placed in the opening direction of the U-shaped fixing seat, interference between the cable and the box body is avoided, the position of the clamping block is not required to be adjusted to be very high, and the cable is convenient to install and disassemble; 6. an organic whole of closed lid and half box on the left side is connected, the utility model discloses an wholeness is stronger, compact structure, convenient to carry.

Drawings

FIG. 1 is a schematic front view of the present embodiment;

FIG. 2 is a schematic view of the reverse structure of the present embodiment;

FIG. 3 is a schematic structural view of the U-shaped fixing base of the present embodiment with the front half removed;

fig. 4 is an exploded view of the right half case of the present embodiment with part of the structure omitted;

FIG. 5 is a schematic structural diagram of a clamping mechanism according to the present embodiment;

description of reference numerals: 1. the left half box body, the right half box body.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

with reference to the accompanying drawings: the embodiment of the invention relates to an open-close type puncture current transformer, which comprises a left half box body 1 and a right half box body 2, wherein one end of the left half box body 1 is hinged with one end of the right half box body 2, the other end of the left half box body 1 is connected with the other end of the right half box body 2 through a lock catch 3, a left iron core 11 and a right iron core 21 are respectively arranged in the left half box body 1 and the right half box body 2, after the left half box body 1 and the right half box body 2 are buckled, the left iron core 11 and the right iron core 21 are butted to form a through ring, the cable passes through the through ring, a U-shaped fixed seat 4 is transversely arranged at the front side of the right box body 2, a clamping mechanism 5 for compressing the cable is arranged at the upper part of the U-shaped fixed seat 4, a puncture mechanism 6 positioned at the lower part of the U-shaped fixed seat 4 is arranged right below the clamping mechanism 5, the front side of the left half box body 1 is provided with a closing cover 7, and the closing cover 7 is closed with the opening of the U-shaped fixed seat 4 after the left half box body 1 and the right half box body 2 are buckled. Therefore, after the left half box body 1 and the right half box body 2 are buckled up and down, a through hole is formed between the left half box body 1 and the right half box body 2, a cable penetrates through the through hole, the clamping mechanism 5 clamps and fixes the cable, the through ring carries out current mutual inductance measurement, and the puncturing mechanism 6 punctures the cable to acquire a voltage signal.

Fixture 5 includes clamp splice 51 and clamp splice adjust

knob

52, 4 upper portions of U-shaped fixing base are equipped with slip chamber 41, and slip chamber 41 slidable mounting has clamp splice 51, the lower extreme of slip chamber 41 is equipped with clamp splice flexible mouthful 42, and slip chamber 41 upper end is equipped with knob installing port 43, rotates on the knob installing port 43 and installs clamp splice adjust knob 52, clamp splice adjust knob 52 lower extreme is equipped with down interior hexagonal hole 521, fixedly connected with hexagonal nut stick 53 in the interior hexagonal hole 521 down, clamp splice 51 upper end fixedly connected with screw rod 54, screw rod 54 and hexagonal nut stick 53 threaded connection. After the cable is placed on the U-shaped fixed seat 4, the hexagonal nut rod 53 is driven to rotate by rotating the clamping block adjusting knob 52, the hexagonal nut rod 53 is connected with the screw rod 54 through threads, the clamping block 51 on the clamping block telescopic opening 42 is driven to move up and down in a telescopic mode, and the cable is clamped and fixed. The clamp splice 51 is slidably mounted in the sliding cavity 41, the inner walls of the two sides of the sliding cavity 41 are provided with limiting grooves 411, the two sides of the clamp splice 51 are provided with limiting lugs 511 matched with the limiting grooves 411, the stroke of the clamp splice 51 can be limited, and the clamp splice 51 is prevented from falling. The side wall of the clamping block adjusting knob 52 is provided with an annular mounting groove 522 matched with the knob mounting hole 43, and the clamping block adjusting knob 52 can rotate in the circumferential direction and be fixed in the axial direction. The upper end of the clamping block adjusting knob 52 is provided with an upper hexagon socket 523 communicated with the lower hexagon socket 521, the diameter of an inscribed circle of the upper hexagon socket 523 is larger than that of the screw 54, the diameter of an inscribed circle of the upper hexagon socket 523 is smaller than that of a hexagon nut rod 53, when the clamping block 51 moves upwards, the upper end of the screw 54 can be retracted into the upper hexagon socket 523, the structure is compact, the screw can be longer, and the stroke of the clamping block 51 is improved.

The puncture mechanism 6 comprises a puncture mechanism 6 and a regulating end knob 62, the lower part of the U-shaped fixed seat 4 is provided with a through hole 44 communicated with the regulating end knob 62 of the puncture mechanism 6, the puncture needle 61 of the puncture mechanism 6 penetrates out of the upper side surface of the lower part of the U-shaped fixed seat 4, the regulating end knob 62 regulates the penetrating height of the puncture needle 61, and the regulating end knob 62 regulates the puncture needle 61 to puncture an insulating layer of a cable pressed by the clamping block 51 so as to lead out a voltage signal of the cable. The puncture mechanism 6 further comprises a puncture sheet 63 for connecting a voltage signal leading-out wire, the puncture sheet 63 is fixed on the side wall of the through hole 44, the puncture needle 61 penetrates through the puncture sheet 63 from bottom to top and is in threaded connection with the puncture sheet 63, an insulating sleeve 64 is fixed at the bottom of the puncture needle 61, the effect of isolating current can be achieved, electric shock is avoided, the insulating sleeve 64 is fixedly connected with the adjusting end knob 62, a limiting flange 641 is arranged on the insulating sleeve 64, and a limiting groove cavity 441 in sliding connection with the limiting flange 641 in a matched mode is arranged on the inner wall of the through hole 44, so that the stroke of the puncture needle 61 can be limited.

And a signal transmission port 8 used for being connected with an internal circuit board is arranged on the U-shaped fixed seat 4, and the signal transmission port 8 can be used for being inserted by signal output equipment, so that the current and voltage data of the cable can be conveniently acquired.

The inner side of the closed cover 7 is provided with a limiting boss 71, the limiting boss 71 is provided with a concave arc surface 72 matched with the surface of the cable, the cable on the U-shaped fixed seat 4 can be further limited, and the influence of the bending deformation of the cable on the puncture needle is reduced.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides an open-close type puncture current transformer, including half box body (1) on a left side and half box body (2) on the right side, half box body (1) one end on a left side and half box body (2) one end on the right side are articulated, the other end hasp (3) of half box body (1) on a left side and half box body (2) on the right side are connected, be provided with left iron core (11) and right iron core (21) in half box body (1) on a left side and the half box body on the right side (2) respectively, half box body (1) on a left side and half box body (2) on the right side lock back, left iron core (11) and right iron core (21) butt joint form the ring of punching: right half box body (2) front side transversely is equipped with U-shaped fixing base (4), and U-shaped fixing base (4) upper portion is equipped with and is used for having fixture (5) that compress tightly the cable, is equipped with puncture mechanism (6) that are located U-shaped fixing base (4) lower part under fixture (5), half box body (1) front side in a left side is equipped with closed lid (7), and closed lid (7) are closed with the opening of U-shaped fixing base (4) after half box body (1) in a left side and half box body (2) lock in a right side.

2. The open-close type puncture current transformer according to claim 1, characterized in that: fixture (5) are including clamp splice (51) and clamp splice adjust knob (52), U-shaped fixing base (4) upper portion is equipped with slip chamber (41), and slip chamber (41) slidable mounting has clamp splice (51), slip chamber (41) lower extreme is equipped with clamp splice expansion mouth (42), and slip chamber (41) upper end is equipped with knob installing port (43), rotates on knob installing port (43) and installs clamp splice adjust knob (52), clamp splice adjust knob (52) lower extreme is equipped with down interior hexagonal hole (521), and interior hexagonal hole (521) internal fixation has hexagonal nut stick (53) down, clamp splice (51) upper end fixedly connected with screw rod (54), screw rod (54) and hexagonal nut stick (53) threaded connection.

3. The open-close type puncture current transformer according to claim 2, characterized in that: the clamping block (51) is slidably mounted in the sliding cavity (41), the inner walls of two sides of the sliding cavity (41) are provided with limiting grooves (411), and two sides of the clamping block (51) are provided with limiting convex blocks (511) matched with the limiting grooves (411).

4. The open-close type puncture current transformer according to claim 3, characterized in that: and an annular mounting groove (522) matched with the knob mounting hole (43) is formed in the side wall of the clamping block adjusting knob (52).

5. The open-close type puncture current transformer according to claim 4, characterized in that: an upper hexagon socket (523) communicated with the lower hexagon socket (521) is arranged at the upper end of the clamp block adjusting knob (52), the diameter of an inscribed circle of the upper hexagon socket (523) is larger than that of the screw (54), and the diameter of the inscribed circle of the upper hexagon socket (523) is smaller than that of the hexagon nut rod (53).

6. The open-close type puncture current transformer according to claim 1, characterized in that: the utility model discloses a high-voltage cable, including the clamp splice (51), piercing mechanism (6) is turned round (62) including piercing mechanism (6) including pjncture needle (61) and regulation end, and through-hole (44) of turning round (62) intercommunication with the regulation end of piercing mechanism (6) are seted up to U-shaped fixing base (4) lower part, and piercing mechanism's (6) pjncture needle (61) are worn out from U-shaped fixing base (4) lower part upside surface, the regulation end is turned round (62) and is adjusted the height that pjncture needle (61) wore out, and the regulation end is turned round (62) and is adjusted pjncture needle (61) and puncture the insulating layer of the cable that.

7. The open-close type puncture current transformer according to claim 6, characterized in that: puncture mechanism (6) are still including puncturing piece (63) that are used for connecting voltage signal and draw forth the wire, and puncturing piece (63) are fixed in through-hole (44) lateral wall, puncture needle (61) from bottom to top pass puncturing piece (63) and with puncturing piece (63) threaded connection, the bottom of puncture needle (61) is fixed with insulating cover (64), insulating cover (64) fixed connection adjust the end and turn round (62), be equipped with limit flange (641) on insulating cover (64), be equipped with on through-hole (44) inner wall with limit flange (641) cooperation sliding connection's spacing vallecular cavity (441).

8. The open-close type puncture current transformer according to claim 1, characterized in that: and a signal transmission port (8) used for being connected with an internal circuit board is arranged on the U-shaped fixed seat (4), and the signal transmission port (8) can be used for inserting signal output equipment.

9. The open-close type puncture current transformer according to claim 1, characterized in that: the inner side of the closed cover (7) is provided with a limiting boss (71), and the limiting boss (71) is provided with a concave arc surface (72) matched with the surface of the cable.