CN217719226U

CN217719226U - Portable current transformer

Info

Publication number: CN217719226U
Application number: CN202222035048.9U
Authority: CN
Inventors: 董永亮
Original assignee: Xiongxian Mingrui Electric Co ltd
Current assignee: Xiongxian Mingrui Electric Co ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-11-01
Anticipated expiration: 2032-08-03

Abstract

The utility model provides a portable current transformer, including stock, mutual induction unit, connecting rod and sliding sleeve. Wherein, the stock has stock first end and stock second end. The mutual inductance units are arranged in two numbers, and the two mutual inductance units are coaxially and rotatably arranged at the first end of the long rod; each mutual induction unit is provided with two abutting ends; each mutual inductance unit is provided with a fixed handle. The connecting rod is equipped with two, two the connecting rod respectively with two fixed handle one-to-one sets up, every the one end of connecting rod with fixed handle is articulated. The sliding sleeve slides and is arranged on the long rod, the sliding sleeve is provided with two hinged ends, and the two hinged ends are respectively used for hinging the other ends of the connecting rods. The utility model provides a range of two mutual induction units of the convenient installation of portable current transformer multiplicable staff need not the staff and carries the appurtenance of adaptation, and the practicality is strong.

Description

Portable current transformer

Technical Field

The utility model belongs to the technical field of the mutual-inductor, concretely relates to portable current transformer.

Background

The spread spectrum caliper is used as a measuring coil and is also the most commonly used sensor for measuring pulse current, the Rogowski coil principle is adopted, the spread spectrum caliper is only coupled with a current loop through an electromagnetic field and is not electrically connected with the measured loop, the structure is simple, the measuring range is wide, the current amplitude can be ten to millions of amperes, and the pulse rise time can be less than nanosecond to microsecond and the like. The spread spectrum calipers are usually of an open-close type structure, namely two semicircular magnetic rings are respectively connected with two mutually hinged handles, and the handles are held by workers to enable the two semicircular magnetic rings to be opened and sleeved on a cable.

In the prior art, because the length of a handle of a spread spectrum caliper is limited, and the spread spectrum caliper needs to be manually operated by a worker, in some special positions, for example, the height of a cable to be measured exceeds the normal operation range of the worker, or the cable to be measured is positioned on one side of a building in the horizontal direction, and the like, some auxiliary tools, such as a ladder, a hanging platform and the like, are needed at the moment. Therefore, when the work is carried out at a special position, articles which need to be carried by a worker are increased, time and labor are wasted undoubtedly, the detection efficiency is reduced due to the installation and the disassembly of the auxiliary tool, and the practicability is poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a portable current transformer aims at solving the cable that awaits measuring that current spread spectrum calliper can't adapt to special position department and the practicality that leads to is poor problem.

In order to achieve the purpose, the utility model adopts the technical proposal that: provided is a portable current transformer, including:

the long rod is provided with a first end and a second end;

the two mutual inductance units are coaxially and rotatably arranged at the first end of the long rod; each mutual inductance unit is provided with two abutting ends, the two mutual inductance units are used for overturning, and the abutting ends in one mutual inductance unit and the abutting ends in the other mutual inductance unit are respectively involuted to be sleeved on the peripheral surface of the cable to be tested; each mutual inductance unit is provided with a fixed handle, and the fixed handles are used for driving the two mutual inductance units to turn over oppositely or oppositely;

two connecting rods are arranged and correspond to the two fixed handles one to one, and one end of each connecting rod is hinged with the fixed handles; and

the sliding sleeve is arranged on the long rod in a sliding mode and provided with two hinged ends, and the two hinged ends are respectively hinged to the other ends of the two connecting rods; the sliding sleeve slides close to the first end of the long rod, and drives the two fixing handles to turn over in a back-to-back mode through the two connecting rods, so that the two mutual inductance units are combined.

In a possible implementation manner, the hinge axis of each connecting rod and the sliding sleeve is arranged in parallel with the rotation axis of each mutual induction unit.

In one possible implementation, the long rod is of a cylindrical profile structure.

In a possible implementation manner, the portable current transformer further comprises a tension spring, wherein the tension spring is sleeved on the long rod and is located between the first end of the long rod and the sliding sleeve, one end of the tension spring is connected with the first end of the long rod, and the other end of the tension spring is connected with the sliding sleeve and used for pulling the sliding sleeve, so that the sliding sleeve has a trend towards the sliding of the first end of the long rod.

In one possible implementation manner, each mutual induction unit comprises an iron core, a winding and a protective shell; the iron core is of a semi-annular shape structure, and the end part of the iron core is the abutting end; the winding is wound on the periphery of the iron core; the protective housing sets up the periphery of iron core is in order to right the iron core reaches the winding wraps up.

In a possible implementation manner, one end of the fixed handle is fixedly connected with the protective shell, and the other end of the fixed handle extends out along the radial direction of the iron core.

In this implementation mode/application embodiment, two mutual induction units adopt an open-close type structure, and the convenience of installation of the cable to be tested can be improved. On the basis of two mutual inductance units, through the long rod, the connecting rod and the sliding sleeve which are arranged, the range of the two mutual inductance units can be conveniently and rapidly installed by workers, and the cable to be tested at a special position can be adapted. In addition, this kind of structure need not the staff and carries the appurtenance of adaptation, and labour saving and time saving can improve detection efficiency moreover, and the practicality is strong.

Drawings

Fig. 1 is a first schematic diagram (involution state) of an explosion structure of the portable current transformer according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an explosion structure of the portable current transformer (in an open state) according to an embodiment of the present invention;

description of reference numerals:

10. a long rod; 20. a mutual inductance unit; 21. fixing a handle; 30. a connecting rod; 40. a sliding sleeve; 50. a tension spring.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2 together, the portable current transformer of the present invention will now be described. The portable current transformer comprises a long rod 10, a mutual inductance unit 20, a connecting rod 30 and a sliding sleeve 40. Wherein, the long rod 10 has a first end of the long rod 10 and a second end of the long rod 10. The mutual induction units 20 are arranged in two, and the two mutual induction units 20 are coaxially and rotatably arranged at the first end of the long rod 10; each mutual inductance unit 20 is provided with two abutting ends, the two mutual inductance units 20 are used for overturning, and the abutting ends in one mutual inductance unit 20 and the abutting ends in the other mutual inductance unit 20 are respectively involuted to be sleeved on the peripheral surface of the cable to be tested; each mutual inductance unit 20 is provided with a fixed handle 21, and the fixed handles 21 are used for driving the two mutual inductance units 20 to turn over oppositely or reversely. The number of the connecting rods 30 is two, the two connecting rods 30 are respectively arranged in one-to-one correspondence with the two fixed handles 21, and one end of each connecting rod 30 is hinged to the fixed handle 21. The sliding sleeve 40 is slidably disposed on the long rod 10, and the sliding sleeve 40 has two hinged ends, and the two hinged ends are respectively used for hinging the other ends of the two connecting rods 30.

The portable current transformer that this embodiment provided, the operation mode is: the worker holds the second end of the long pole 10 with one hand and holds the sliding sleeve 40 with the other hand; the sliding sleeve 40 slides close to the first end of the long rod 10, and drives the two fixing handles 21 to turn back and forth through the two connecting rods 30, so that the two mutual induction units 20 are folded to be sleeved on the peripheral surface of the cable to be tested. Or the sliding sleeve 40 is slid close to the second end of the long rod 10, and the two fixing handles 21 are driven by the two connecting rods 30 to turn over relatively, so that the two mutual induction units 20 are turned over and opened to be separated from the cable.

Compared with the prior art, the portable current transformer provided by the embodiment has the advantages that the two mutual induction units 20 adopt the open-close type structure, and the convenience in installation of cables to be tested can be improved. On the basis of two mutual inductance units 20, through the stock 10, the connecting rod 30 and the sliding sleeve 40 that set up, the convenient scope of installing two mutual inductance units 20 of multiplicable staff can adapt to the cable that awaits measuring of special position department. In addition, this kind of structure need not the staff and carries the appurtenance of adaptation, and labour saving and time saving can improve detection efficiency moreover, and the practicality is strong.

In some embodiments, the connecting rod 30 may be configured as shown in fig. 1-2. Referring to fig. 1 to 2, the hinge axis of each link 30 and the sliding sleeve 40 is arranged in parallel with the rotation axis of each trans unit 20. The structure can ensure the effectiveness of the two mutual induction units 20 driven by the two connecting rods 30 to overturn, can ensure the two mutual induction units 20 to overturn simultaneously, and has strong operability.

In some embodiments, the elongate rod 10 may be configured as shown in fig. 1-2. Referring to fig. 1 to 2, the long rod 10 is a cylindrical shape, the structural strength of the cylindrical long rod 10 is high, the sliding sleeve 40 is convenient to install, and meanwhile, the comfort level of the worker in holding the long rod can be ensured.

Further, the long rod 10 may be a square tube.

In some embodiments, the connecting rod 30 may be configured as shown in fig. 1-2. Referring to fig. 1 to 2, the portable current transformer further includes a tension spring 50, the tension spring 50 is sleeved on the long rod 10 and is located between the first end of the long rod 10 and the sliding sleeve 40, one end of the tension spring 50 is connected with the first end of the long rod 10, and the other end is connected with the sliding sleeve 40 for pulling the sliding sleeve 40, so that the sliding sleeve 40 has a tendency of sliding towards the first end of the long rod 10. When the two mutual inductance units 20 are coupled, the two mutual inductance units 20 may be separated when the worker releases the sliding sleeve 40, so that the worker always gives a pushing force to the sliding sleeve 40 toward the first end of the long rod 10. And extension spring 50's setting, sustainable pulling sliding sleeve 40 slides to the first end of stock 10, and then guarantees that two mutual induction unit 20 can continuously keep the state of closing, and then saves staff's labour, simple structure, and the practicality is strong. And for the opening of the two mutual inductance units 20, the worker only needs to pull the sliding sleeve 40 to slide towards the second end of the long rod 10, and the operation is convenient.

In some embodiments, the connecting rod 30 may be configured as shown in fig. 1-2. Referring to fig. 1 to 2, each of the trans units 20 includes an iron core, a winding, and a protective case; the iron core is of a semi-annular shape structure, and the end part of the iron core is the abutting end; the winding is wound on the periphery of the iron core; the protective housing sets up the periphery of iron core is in order to right the iron core reaches the winding wraps up. The iron core, the winding and the protective casing are important components of the transformer unit 20, and are not described herein for the prior art.

In some embodiments, the connecting rod 30 may be configured as shown in fig. 1-2. Referring to fig. 1 to 2, one end of the fixed handle 21 is fixedly connected to the protective casing, and the other end of the fixed handle 21 extends in a radial direction of the iron core, so that the connection with the connecting rod 30 is ensured. Further, in order to reduce the cost, a fixing handle 21 may be provided at a position near the first end of the long rod 10 to shorten the length of the link 30.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. Portable current transformer, its characterized in that includes:

the long rod is provided with a first end and a second end;

the two mutual inductance units are coaxially and rotatably arranged at the first end of the long rod; each mutual inductance unit is provided with two abutting ends, the two mutual inductance units are used for overturning, and the abutting ends in one mutual inductance unit and the abutting ends in the other mutual inductance unit are respectively involuted to be sleeved on the peripheral surface of the cable to be tested; each mutual inductance unit is provided with a fixed handle, and the fixed handles are used for driving the two mutual inductance units to turn over oppositely or reversely;

2. The portable current transformer of claim 1, wherein the hinge axis of each link and the sliding sleeve is arranged in parallel with the rotation axis of each transformer unit.

3. The portable current transformer of claim 2, wherein the elongated bar is a cylindrical form factor.

4. The portable current transformer of claim 1, further comprising a tension spring, wherein the tension spring is sleeved on the long rod and located between the first end of the long rod and the sliding sleeve, one end of the tension spring is connected to the first end of the long rod, and the other end of the tension spring is connected to the sliding sleeve for pulling the sliding sleeve, so that the sliding sleeve has a tendency to slide towards the first end of the long rod.

5. The portable current transformer of claim 1, wherein each said transformer unit comprises an iron core, a winding and a protective shell; the iron core is of a semi-annular shape structure, and the end part of the iron core is the abutting end; the winding is wound on the periphery of the iron core; the protective housing sets up the periphery of iron core, in order to right the iron core reaches the winding wraps up.

6. The portable current transformer of claim 5, wherein one end of the fixed handle is fixedly connected with the protective shell, and the other end of the fixed handle extends in a radial direction of the iron core.