CN218455791U - Low-voltage line current transformer measuring device - Google Patents
Low-voltage line current transformer measuring device Download PDFInfo
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- CN218455791U CN218455791U CN202221996341.5U CN202221996341U CN218455791U CN 218455791 U CN218455791 U CN 218455791U CN 202221996341 U CN202221996341 U CN 202221996341U CN 218455791 U CN218455791 U CN 218455791U
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Abstract
The utility model belongs to the technical field of electric power tool, a low voltage circuit current transformer measuring device is disclosed. The transformer core assembly comprises a first assembly, a second assembly, a first transformer core unit, a second transformer core unit and an insulating operating rod, wherein the upper part of the first assembly is of a semicircular structure, a cavity is arranged on one side of the semicircular structure, a first groove is formed in the middle of the semicircular structure, and a threaded hole is formed in the bottom of the semicircular structure; the upper part of the second component is of a semicircular structure, the middle part of the second component is provided with a second groove, and the bottom of the second component is a free end; the first assembly and the second assembly are connected through a pin shaft, and an enclosed area is enclosed in the middle of the first assembly and the second assembly; the first transformer iron core unit is arranged in the first groove; the second transformer iron core unit is arranged in the second groove; the insulating operating rod is connected in the threaded hole of the first component. The utility model has the advantages of simple structure, the safety of operation personnel has been protected, the operating efficiency has been improved.
Description
Technical Field
The utility model belongs to the technical field of electric power tool, concretely relates to low voltage line current transformer measuring device.
Background
The current transformer is an important element in a power system, and is an especially important element in electric energy metering. At present, with the development of lean management of each enterprise, more accurate data can be measured by accurate and small-range application current transformers to meet the requirements of different works.
The current pincerlike current transformer for on-site actual measurement is mainly in a pressing type and a buckling type. Because the working personnel is required to carry out live climbing measurement when the circuit measures the current, the ammeter carries out measurement through the pressing type pincerlike current transformer when in work, the distance between the working personnel and a live circuit is short, and the live climbing operation is time-consuming and labor-consuming, so that various hidden dangers are brought to the safety of the working personnel; the current of the bare conductor cannot be measured by the conventional clamp-on ammeter, the current of the insulated conductor can be measured only while safety is guaranteed, and great inconvenience is brought to workers when the current of the bare conductor is measured.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a low-voltage line current transformer measuring device to solve the problems in the prior art;
in order to achieve the above object, the present invention provides the following technical solutions:
a measuring device of a low-voltage line current transformer comprises a first component, a second component, a first transformer iron core unit, a second transformer iron core unit and an insulating operating rod, wherein,
the upper part of the first component is of a semicircular structure, a cavity is arranged on one side of the semicircular structure, a first groove is arranged in the middle of the semicircular structure, a through hole is formed in the bottom of the first groove, and a threaded hole is formed in the bottom of the first groove;
the upper part of the second assembly is of a semicircular structure, the semicircular structure is partially or completely matched with the semicircular cavity of the first assembly, a second groove is formed in the middle of the semicircular cavity, and the bottom of the semicircular cavity is a free end;
the first assembly and the second assembly are connected through a pin shaft arranged at the center of a semicircular cavity, the opposite upper parts and bottom end faces of the first assembly and the second assembly are partially or completely contacted, and the middle parts of the first assembly and the second assembly enclose a closed area;
the first transformer iron core unit is arranged in the first groove and is fixedly connected with the first groove;
the second transformer iron core unit is arranged in the second groove and is fixedly connected with the second groove;
the top of the insulating operating rod is in threaded connection with the threaded hole in the bottom of the first assembly.
Further, the free end is of a conical structure.
Furthermore, a first blind hole and a second blind hole which are opposite in position are arranged in the cavity and the semicircular structure at the upper part of the second component.
Furthermore, the spring is further included, one end of the spring is fixedly arranged in the first blind hole, and the other end of the spring is fixedly arranged in the second blind hole.
Further, the spring is a compression spring.
Further, the cavity is a semicircular cavity.
Further, the closed region is a triangular region.
Further, the first component and the second component are both made of insulating materials.
Further, the insulating operation rod comprises at least two telescopic rods.
And one end of the wire penetrates through the through hole in the first assembly to be connected with the first transformer iron core unit, and the other end of the wire is connected with an external current detection device.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a low-voltage line current transformer measuring device, which comprises a first component, a second component, a first transformer iron core unit, a second transformer iron core unit and an insulating operating rod, and has a simple structure; the first mutual inductor iron core unit is arranged in the first assembly, the second mutual inductor iron core unit is arranged in the second assembly, the first assembly and the second assembly are connected through the pin shaft, so that the middle parts of the first assembly and the second assembly form a closed area, and the bottom of the first assembly is provided with the insulating operating rod, so that when an operator conducts current collection and detection, a wire to be detected is arranged in the closed area of the first assembly and the second assembly, the operation is convenient, the installation is convenient and quick, the inconvenience of the operation of the operator caused by the fact that the operator climbs the rod in an electrified manner to detect current is avoided, and meanwhile, the danger caused by the fact that the operator climbs the rod in an electrified manner to measure current is avoided; the safety of the operating personnel is guaranteed, and the detection efficiency is improved.
Further, set up to the toper structure through the free end with the second subassembly for when surveying the electricity, can with the electric wire that awaits measuring contact the triangle area that forms with first subassembly in the toper structure of second subassembly, the convenient closed area that slides in first subassembly and second subassembly formation with the electric wire that awaits measuring has made things convenient for the operation of operation personnel, has improved the operating efficiency, can select the component of different multiplying powers according to the electric current size of different wires simultaneously to measure, make the utility model discloses a low pressure circuit current transformer measuring device application range is wider.
Further, through setting up the structure of first blind hole and second blind hole in the semicircular structure of the upper portion in the semicircular region of first subassembly and second subassembly, and set up the spring in first blind hole and second blind hole, make first subassembly and second subassembly contact each other under natural state, the second subassembly can rotate around the round pin axle that sets up between first subassembly and second subassembly when receiving external force, mutual inductor core's closure under the natural state has been ensured, make can secondary form current when measuring, detection device safety has been ensured, detect current smoothly.
Furthermore, a triangular closed area is formed in the middle of the first assembly and the second assembly, so that the electric wire to be measured can be completely wrapped in the first assembly and the second assembly, the problem that the electric wire slides off from the first assembly and the second assembly in the measuring process is avoided, and convenience is brought to the measurement of the electric wire.
Further, the first assembly and the second assembly are made of insulating materials, so that the risk of electric shock in the live measurement process is further avoided, and the safety of operators is guaranteed.
Furthermore, the insulating operating rod is arranged into a structure with at least two sections of telescopic rods, so that the rod climbing operation is avoided, the operation of operators is facilitated, and the operation efficiency is improved.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to constitute a limitation on the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of a measuring device of a low-voltage line current transformer according to the present invention;
fig. 2 is a schematic structural diagram of a first assembly in the measuring device of the low-voltage line current transformer according to the present invention at a viewing angle;
fig. 3 is a schematic structural diagram of another view angle of the first component in the measuring device of the low-voltage line current transformer of the present invention;
fig. 4 is a schematic structural view of the low-voltage line current transformer measuring device of the present invention, in which a first transformer core unit is disposed on a first assembly;
fig. 5 is a schematic structural diagram of a second assembly structure in the measuring device of the current transformer for low-voltage lines of the present invention;
fig. 6 is a schematic structural view of a low-voltage line current transformer measuring device according to the present invention, in which a second transformer core unit structure is disposed on a second assembly;
wherein: the transformer core unit comprises a first assembly 1, a second assembly 2, a cavity 3, a pin shaft 4, a first groove 5, a second groove 6, a through hole 7, a threaded hole 8, a first transformer core unit 9, a second transformer core unit 10, a closed area 11, a first blind hole 12, a second blind hole 13, an insulating operating rod 14 and a wire 15.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further explanation of the invention as claimed. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
The utility model discloses a low voltage circuit current transformer measuring device, as shown in fig. 1, through corresponding setting up first mutual-inductor core unit 9 and second mutual-inductor core unit 10 in first subassembly 1 and second subassembly 2 respectively, and set up first subassembly 1 and be connected with insulating bar 14 as fixed subassembly, set up second subassembly 2 into movable subassembly, make second subassembly 2 can center on the round pin axle 4 between first subassembly 1 and the second subassembly 2 and open and shut the motion, and be connected first mutual-inductor core unit 9 on the first subassembly 1 and outside current detection device through wire 15 and carry out current acquisition and monitoring, moreover, the steam generator is simple in structure, convenient operation, it causes the operation inconvenience of operation personnel to have avoided the electrified pole-climbing of operation personnel detection current, cause danger when having avoided the electrified pole-climbing of operation personnel to measure simultaneously, the safety of operation personnel has been ensured, and the detection efficiency is improved.
Further specifically, as shown in fig. 2, 3 and 4, the first component 1 of the present invention includes a semicircular structure located at the upper part of the first component 1, and a cavity 3 is provided at one side of the semicircular structure, and a first groove 5 located at the middle part of the first component 1 and a threaded hole 8 located at the bottom of the first component 1; the upper part, the middle part and the bottom part of the first component 1 are integrally formed, a pin shaft 4 hole is arranged at the circle center of a semicircular structure at the upper part of the first component 1, and a through hole 7 is arranged below a first groove 5 at the middle part of the first component 1; specifically, the cavity 3 provided on the first member 1 is a semicircular cavity.
Further specifically, an insulating operating rod 14 is fixedly connected to the bottom threaded hole 8 of the first component 1, and the top of the insulating operating rod 14 is matched with the threaded hole 8 of the first component 1 through threads. Preferably, the insulated operating rod 14 is a telescopic insulated operating rod, comprising at least two sections of operating rods.
Preferably, the insulating operating rod 14 is a screw rod, that is, each section of the telescopic rod is fixed by a screw.
Specifically, the cavity 3 of the semicircular new structure at the upper part of the first component 1 is in a semicircular structure.
Preferably, the holes of the pin shaft 4 are two concentric annular objects, the two annular objects have the same structural size, and are symmetrically arranged at the center of a semicircular structure at the upper part of the first component 1 and positioned at two sides of the semicircular structure cavity 3; optionally, the hole of the pin shaft 4 is a cylinder arranged at the center of the semicircular structure on the upper portion of the first component 1, and a through threaded hole 8 is arranged at the center of the cylinder.
Preferably, the arc length of the semicircle of the upper semicircular structure of the first component 1 is between a quarter of a circle and a half of a circle, that is, the fan-shaped angle corresponding to the new semicircular structure is an obtuse angle, and the obtuse angle is between 90 degrees and 180 degrees; preferably the fan angle is 120 degrees.
Preferably, the first assembly 1 is an S-shaped structure, two ends of the S-shaped structure are respectively the upper part and the bottom of the first assembly 1, and the middle part of the S-shaped structure is the middle part of the first assembly 1; optionally, the first component 1 is of a sine wave configuration.
Further, as shown in fig. 5 and 6, the upper portion of the second component 2 is a solid semicircular structure, the size of the semicircular structure is the same as that of the semicircular structure on the first component 1, and the semicircular structure on the second component 2 can be matched with the cavity 3 in the semicircular structure on the upper portion of the first component 1, so that two semicircular surfaces of the semicircular structure on the second component 2 can be in direct or indirect contact with the side wall of the inner cavity on the upper portion of the first component 1. Preferably, the semicircular structure on the second component 2 is in clearance fit with the inner cavity on the semicircular structure on the first component 1; in particular, the upper, middle and bottom structures in the second component 2 are integrally formed; the middle part of the semicircular structure of the second component 2 is provided with a pin shaft hole for the pin shaft 4 to pass through, and the size of the pin shaft hole is the same as that of the pin shaft hole on the first component 1.
Preferably, the free end of the second component 2 is of a conical configuration, the conical surface of which faces vertically downwards.
More specifically, a first blind hole 12 is formed in the center of the cavity 3 of the semicircular structure at the upper part of the first component 1, a second blind hole 13 is formed in the center of the semicircular upper part of the second component 2, springs are arranged in the first blind hole 12 and the second blind hole 13, one end of each spring is in contact with the bottom and the side wall of the first blind hole 12, and the other end of each spring is in contact with the bottom and the side wall of the second blind hole 13.
Specifically, the spring is a compression spring.
More specifically, as shown in fig. 1, when the first component 1 and the second component 2 are connected, the pin shaft holes of the first component 1 and the second component are aligned and then connected through the pin shaft 4, so that the upper part and the bottom part of the first component 1 are partially or completely contacted, the middle part can form a closed area 11 under the enclosure of the first component 1 and the second component 2, so that the second component 2 can rotate around the pin shaft 4, the semicircular structure of the upper part of the second component 2 can rotate in the inner cavity of the semicircular structure of the upper part of the first component 1, and the middle part of the first component 1 and the middle part of the second component 2 can be opened and closed when being subjected to an external force because the spring is arranged on the upper part of the first component 1 and the upper part of the second component 2, so that the openable and closable closed area 11 is formed in the middle part of the first component 1 and the middle part of the second component 2.
More specifically, under the action of a spring, the closed area 11 formed by the first component 1 and the second component 2 is in a closed state in a natural state, the upper parts and the bottom parts of the first component 1 and the second component 2 are partially or completely contacted, when the closed area is in a stressed state, the first component 1 is a fixed part, the second component 2 is a movable part, the second component 2 can rotate around a pin shaft 4 between the first component 1 and the second component 2, and when the closed area is not stressed, the second component 2 rebounds to an initial position under the action of the spring to be contacted with the first component 1.
Preferably, the enclosed area 11 is a triangular area.
Further specifically, a first transformer core unit 9 is arranged in the first groove 5, a second transformer core unit 10 is arranged in the second groove 6, and the first transformer core unit 9 and the second transformer core unit 10 are fixedly connected in the first groove 5 and the second groove 6. Preferably, the first groove 5 and the second groove 6 are rectangular grooves; preferably, the first transformer core unit 9 and the second transformer core unit 10 are interference fitted with the first recess 5 and the second recess 6.
Optionally, the first transformer core unit 9 and the second transformer core unit 10 are silicon steel sheets.
More specifically, the first component 1 and the second component 2 are made of an insulating material, such as ABS or PVC.
Further specifically, the utility model discloses a low voltage line current transformer measuring device still includes wire 15, and through-hole 7 on the wire 15 is passed first subassembly 1 is connected with first mutual-inductor core unit 9, and the other end is connected with external current detection device, like current sensing etc..
Further, the utility model discloses a low voltage circuit current transformer measuring device is when assembling, at first pass through-hole 7 on the first subassembly 1 with wire 15's one end and be connected with first mutual-inductor core unit 9, and be fixed in first recess 5 at first subassembly 1 middle part with first mutual-inductor core unit 9, set up second mutual-inductor core unit 10 fixed in second recess 6 of second subassembly 2 afterwards, be fixed in first blind hole 12 of first subassembly 1 with the one end of pressure spring again at last, the other end is connected first subassembly 1 and second subassembly 2 through round pin axle 4 after being fixed in second blind hole 13 on second subassembly 2 upper portion, again with insulating bar 14 threaded connection in screw hole 8 in the bottom of first subassembly 1, connect the other end of wire 15 on external current detection device, accomplish the utility model discloses the assembly of a device.
The utility model relates to a low voltage circuit current transformer measuring device's principle does, when carrying out bare conductor 15's current measurement, adjust insulating bar 14's high back, will set up and place in the breach that insulating bar 14 top low voltage circuit current transformer measured first subassembly 1 and second subassembly 2 on waiting to survey the electric wire, make the electric wire be located first subassembly 1 and the breach that second subassembly 2 formed, stimulate insulating bar 14 afterwards, make second subassembly 2 rotate around round pin axle 4 between first subassembly 1 and the second subassembly 2 under the effect that the spring received the external force, the electric wire that awaits measuring carries out back in the closed area 11 that first subassembly 1 and second subassembly 2 formed, first subassembly 1 and second subassembly 2 kick-back under the effect of spring, make first subassembly 1 and second subassembly 2 continue to be in the closed state, thereby carry out the current detection operation, treat that the current detection operation promotes insulating bar 14 after accomplishing, make 15 roll-off that detect the closed area 11 that first subassembly 1 and second subassembly 2 enclose, accomplish the current detection work closed area.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as being covered by the claims.
Claims (10)
1. A measuring device of a current transformer of a low-voltage line is characterized by comprising a first assembly (1), a second assembly (2), a first transformer iron core unit (9), a second transformer iron core unit (10) and an insulating operating rod (14), wherein,
the upper part of the first component (1) is of a semicircular structure, a cavity (3) is arranged on one side of the semicircular structure, a first groove (5) is arranged in the middle of the semicircular structure, a through hole (7) is arranged at the bottom of the first groove (5), and a threaded hole (8) is arranged at the bottom of the first groove;
the upper part of the second assembly (2) is of a semicircular structure, the semicircular structure is partially or completely matched with the semicircular cavity (3) of the first assembly (1), a second groove (6) is formed in the middle of the semicircular cavity, and the bottom of the semicircular cavity is a free end;
the first component (1) and the second component (2) are connected through a pin shaft (4) arranged at the center of a circle of the semicircular cavity (3), the opposite upper parts and bottom end surfaces of the first component (1) and the second component (2) are partially or completely contacted, and the middle parts of the first component and the second component enclose a closed area (11);
the first transformer iron core unit (9) is arranged in the first groove (5) and is fixedly connected with the first groove (5);
the second transformer iron core unit (10) is arranged in the second groove (6) and is fixedly connected with the second groove (6);
the top of the insulating operating rod (14) is connected in a threaded hole (8) in the bottom of the first component (1) in a threaded mode.
2. A low-voltage line current transformer measuring device according to claim 1, characterized in that said free end is of conical configuration.
3. A low-line current transformer measuring device according to claim 1, characterized in that said cavity (3) and said second assembly upper semicircular structure are provided with a first blind hole (12) and a second blind hole (13) in opposite positions.
4. A low-voltage line current transformer measuring device according to claim 3, characterized in that it further comprises a spring, one end of which is fixedly arranged in said first blind hole (12) and the other end is fixedly arranged in said second blind hole (13).
5. A low-line current transformer measuring device according to claim 4, characterized in that said spring is a compression spring.
6. A low-line current transformer measuring device according to claim 1, characterized in that said cavity (3) is a semicircular cavity (3).
7. A low-line current transformer measuring device according to claim 1, characterized in that said closed area (11) is a triangular area.
8. A low-voltage line current transformer measuring device according to claim 1, characterized in that said first (1) and second (2) components are made of insulating material.
9. A low-voltage line current transformer measuring device according to claim 1, characterized in that said insulating operating rod (14) comprises at least two telescopic rods.
10. A low-voltage line current transformer measuring device according to claim 1, characterized by further comprising a wire (15), wherein one end of the wire (15) is connected to the first transformer core unit (9) through the through hole (7) of the first assembly (1), and the other end is connected to an external current detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221996341.5U CN218455791U (en) | 2022-07-29 | 2022-07-29 | Low-voltage line current transformer measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221996341.5U CN218455791U (en) | 2022-07-29 | 2022-07-29 | Low-voltage line current transformer measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218455791U true CN218455791U (en) | 2023-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221996341.5U Active CN218455791U (en) | 2022-07-29 | 2022-07-29 | Low-voltage line current transformer measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218455791U (en) |
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2022
- 2022-07-29 CN CN202221996341.5U patent/CN218455791U/en active Active
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