CN212485071U - Combined three-phase integrated current transformer - Google Patents
Combined three-phase integrated current transformer Download PDFInfo
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- CN212485071U CN212485071U CN202021787613.1U CN202021787613U CN212485071U CN 212485071 U CN212485071 U CN 212485071U CN 202021787613 U CN202021787613 U CN 202021787613U CN 212485071 U CN212485071 U CN 212485071U
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- connecting plate
- shell
- screw rod
- current transformer
- threading
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Abstract
The utility model discloses a modular integrative current transformer of three-phase, including the middle part casing, connecting rod and a second connecting plate fixed connection that one side that two first connecting plates deviate from respectively set up through two symmetries, each first connecting plate rather than being connected rotatable screw rod that is provided with in the middle of two connecting rods between the second connecting plate, the one end of each screw rod extends to its corresponding the outside of second connecting plate is and be provided with the operation hand wheel. The utility model is suitable for the measurement and protection of the current of a plurality of cable loops, and a current transformer is installed on a plurality of cables together, thus reducing the installation difficulty and the equipment cost; epoxy resin is poured between the shell and the threading cylinder, so that the insulating property of the product is greatly enhanced; and the utility model discloses in realize the regulation of distance between two tip casings and the middle part casing through the rotatory screw rod of operating hand wheel, can adapt to different cable intervals, have fine suitability.
Description
Technical Field
The utility model relates to an electron device technical field especially relates to a modular integrative current transformer of three-phase.
Background
The current and voltage in the circuit in the power supply and utilization line are greatly different from each other greatly, so that the current and voltage need to be converted into more uniform current for the measurement of a secondary instrument; in addition, when the voltage on the line is relatively high, direct measurement is very dangerous, so that a current transformer can be used for alternating current and electrical isolation. The current transformer can convert primary current with a large value into secondary current with a small value through certain change, is used for protection, measurement and the like, and is widely used for current measurement, electric quantity metering, signal sampling and microcomputer protection of electric equipment of an alternating current power system. However, for the current measurement and protection of three-phase current or a plurality of cable loops, a plurality of current transformers are needed, which causes the waste of installation space, complex wiring and inconvenient use for users.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a modular integrative current transformer of three-phase solves the technical problem who mentions in the above-mentioned background art.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to a combined three-phase integrated current transformer, which comprises a middle shell, wherein a first threading cylinder is arranged in the middle of the middle shell, epoxy resin is filled between the inner peripheral wall of the middle shell and the outer peripheral wall of the first threading cylinder, two first connecting plates are symmetrically arranged at one end of the middle shell, one sides of the two first connecting plates, which are deviated from each other, are respectively and fixedly connected with a second connecting plate through two symmetrically arranged connecting rods, a screw rod is rotatably arranged between the two connecting rods between the second connecting plates, which are connected with each first connecting plate, and one end of each screw rod extends to the outer side of the corresponding second connecting plate and is provided with an operating hand wheel; each screw rod is adjustably provided with an end shell, a third connecting plate is arranged in the middle of one end of each end shell, a threaded hole matched with the screw rod is formed in the middle of each third connecting plate, two through holes matched with the two connecting rods are symmetrically formed in each third connecting plate along the threaded hole, a second threading cylinder is arranged in the middle of each end shell, epoxy resin is filled between the inner peripheral wall of each end shell and the outer peripheral wall of the second threading cylinder, annular iron cores are sleeved outside the first threading cylinder and the two second threading cylinders, at least one coil is wound outside each annular iron core, and the end part of each coil is exposed and arranged outside the corresponding middle shell or the corresponding end shell.
Furthermore, the other end of the middle shell and the other ends of the two end shells are provided with wiring terminals used for being connected with the end parts of the coils.
Further, the axis of the first thread passing cylinder and the axes of the two second thread passing cylinders are arranged on the same horizontal plane.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model is suitable for the measurement and protection of the current of a plurality of cable loops, and a current transformer is installed on a plurality of cables together, thus reducing the installation difficulty and the equipment cost; epoxy resin is poured between the shell and the threading cylinder, so that the insulating property of the product is greatly enhanced; and the utility model discloses in realize the regulation of distance between two tip casings and the middle part casing through the rotatory screw rod of operating hand wheel, can adapt to different cable intervals, have fine suitability.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic structural view of the present invention;
description of reference numerals: 1. a middle housing; 2. a first threading cylinder; 3. a first connecting plate; 4. a connecting rod; 5. a second connecting plate; 6. a screw; 7. operating a hand wheel; 8. an end housing; 9. a third connecting plate; 10. a second thread passing cylinder; 11. and a terminal.
Detailed Description
As shown in fig. 1, a combined three-phase integrated current transformer includes a middle housing 1, a first threading cylinder 2 is disposed in the middle of the middle housing 1, and epoxy resin is filled between the inner peripheral wall of the middle housing 1 and the outer peripheral wall of the first threading cylinder 2.
The bilateral symmetry of the one end of middle part casing 1 is provided with two first connecting plates 3, two one side that first connecting plate 3 deviates from mutually is respectively through connecting rod 4 and a second connecting plate 5 fixed connection that two symmetries set up. A screw 6 is rotatably arranged between the two connecting rods 4 between each first connecting plate 3 and the second connecting plate 5 connected with the first connecting plate, and one end of each screw 6 extends to the outer side of the corresponding second connecting plate 5 and is provided with an operating hand wheel 7.
Each screw 6 is adjustably provided with an end shell 8, the middle of one end of each end shell 8 is provided with a third connecting plate 9, the middle of each third connecting plate 9 is provided with a threaded hole matched with the screw 6, and each third connecting plate 9 is symmetrically provided with two through holes matched with the two connecting rods 4 along the threaded hole. A second threading cylinder 10 is disposed in the middle of each end housing 8, and epoxy resin is filled between the inner circumferential wall of each end housing 8 and the outer circumferential wall of the second threading cylinder 10.
In this embodiment, the middle housing, the first threading cylinder, each of the first connecting plates, each of the connecting rods, each of the second connecting plates, each of the threaded rods, each of the operating handwheels, each of the end housings, each of the third connecting plates, and each of the second threading cylinders are made of a flame retardant plastic material.
The axis of the first threading cylinder 2 and the axes of the two second threading cylinders 10 are arranged on the same horizontal plane, annular iron cores are sleeved outside the first threading cylinder 2 and the two second threading cylinders 10, at least one coil is wound outside each annular iron core, and the end part of each coil is exposed and arranged outside the corresponding middle shell 1 or the corresponding end part shell 8. In this embodiment, the other end of the middle housing 1 and the other ends of the two end housings 8 are each provided with a connection terminal 11 for connecting with an end of the coil.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (3)
1. The utility model provides a modular integrative current transformer of three-phase which characterized in that: the wire drawing device comprises a middle shell, wherein a first wire drawing cylinder is arranged in the middle of the middle shell, epoxy resin is filled between the inner peripheral wall of the middle shell and the outer peripheral wall of the first wire drawing cylinder, two first connecting plates are symmetrically arranged on two sides of one end of the middle shell, one sides, away from the two first connecting plates, are fixedly connected with a second connecting plate through two symmetrically arranged connecting rods respectively, a screw rod is rotatably arranged between the two connecting rods between each first connecting plate and the second connecting plate connected with the first connecting plate, and one end of each screw rod extends to the outer side of the corresponding second connecting plate and is provided with an operating hand wheel; each screw rod is adjustably provided with an end shell, a third connecting plate is arranged in the middle of one end of each end shell, a threaded hole matched with the screw rod is formed in the middle of each third connecting plate, two through holes matched with the two connecting rods are symmetrically formed in each third connecting plate along the threaded hole, a second threading cylinder is arranged in the middle of each end shell, epoxy resin is filled between the inner peripheral wall of each end shell and the outer peripheral wall of the second threading cylinder, annular iron cores are sleeved outside the first threading cylinder and the two second threading cylinders, at least one coil is wound outside each annular iron core, and the end part of each coil is exposed and arranged outside the corresponding middle shell or the corresponding end shell.
2. The combined three-phase integrated current transformer according to claim 1, wherein: the other end of middle part casing and two the other end of tip casing all be provided with be used for with the binding post that the tip of coil is connected.
3. The combined three-phase integrated current transformer according to claim 1, wherein: the axis of the first threading cylinder and the axes of the two second threading cylinders are arranged on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021787613.1U CN212485071U (en) | 2020-08-25 | 2020-08-25 | Combined three-phase integrated current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021787613.1U CN212485071U (en) | 2020-08-25 | 2020-08-25 | Combined three-phase integrated current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212485071U true CN212485071U (en) | 2021-02-05 |
Family
ID=74448363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021787613.1U Active CN212485071U (en) | 2020-08-25 | 2020-08-25 | Combined three-phase integrated current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212485071U (en) |
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2020
- 2020-08-25 CN CN202021787613.1U patent/CN212485071U/en active Active
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