CN213277770U

CN213277770U - Miniature current transformer

Info

Publication number: CN213277770U
Application number: CN202022762091.6U
Authority: CN
Inventors: 梁献勤; 梁献安; 韦莉
Original assignee: Guangxi Prante Safety Technology Co Ltd
Current assignee: Guangxi Prante Safety Technology Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-05-25
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a micro current transformer, which belongs to the field of current transformers, and comprises a transformer main body, wherein the outer surface of the upper end of the transformer main body is provided with an upper fixing mechanism and a temperature measuring mechanism, the upper fixing mechanism is positioned at one side of the temperature measuring mechanism, the outer surface of one side of the transformer main body is provided with an outer connecting wire, the outer connecting wire is positioned at one side of the upper fixing mechanism, the damage to the inner wire rod by bolt fixing is reduced by adopting a sealing cover connection and fixation mode through the upper fixing mechanism, the outer connecting wire is protected through a wire protecting cylinder, the tightness of the connection between the transformer main body and the outer connecting wire is improved, the exposed electric leakage of the wire rod at the connection is reduced, the operating temperature in the transformer main body is detected through the temperature measuring mechanism, and the overhigh internal operating temperature is avoided, resulting in softening of the coil and burning out of the short circuit, leading to better use experience.

Description

Miniature current transformer

Technical Field

The utility model relates to a current transformer field, more specifically say, relate to a miniature current transformer.

Background

The miniature mutual inductor is divided into a miniature current mutual inductor (comprising a miniature current transformer) and a miniature voltage mutual inductor, is equipment in the power industry, is generally used for measurement and protection in various power instruments, and has the characteristics of small volume (the size of a nail cover can be achieved), high precision (the four precision grades of the common mutual inductor are 0.5, 0.5S, 0.2 and 0.2S, and the miniature mutual inductor can reach 0.1 grade) and the like compared with the common mutual inductor.

The existing miniature current transformer is fixed by bolts when in use, coils are easily damaged, the joints of the transformer and an external connecting wire are used for a long time, the joints are easily damaged and exposed, the movement temperature of the coils inside the transformer is too high, short circuit and line aging are easily caused, and the miniature current transformer has the advantages that the installation is convenient to set, the coils inside the transformer are not damaged, the coils at the joints are effectively protected, the internal operation temperature of the transformer is not too high, and the safety in use is high.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Problem to exist among the prior art, the utility model aims at providing a miniature current transformer, possess the mode that adopts sealed lid to connect fixedly, reduce screw thread and bolt fastening to the damage of inside wire rod, further promote inside coil's life, the wire protecting tube of setting, protect the external connection line, promote the compactness of junction between mutual-inductor main part and the external connection line, it exposes to reduce the junction wire rod, reduce the electric leakage, promote safe in utilization, detect the operating temperature in the mutual-inductor main part, avoid inside operating temperature too high, lead to the coil to soften and burn out the short circuit, promote factor of safety in utilization's advantage, the coil is easily damaged to have been solved, the easy damaged and too high problem of mutual-inductor operating temperature of external connection line.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a miniature current transformer, includes the mutual-inductor main part, the upper end surface of mutual-inductor main part is provided with fixed establishment, temperature measurement mechanism, it is located one side of temperature measurement mechanism to go up fixed establishment, one side surface of mutual-inductor main part is provided with the external connection line, the external connection line is located one side of fixed establishment.

Preferably, the outer surface of the lower end of the upper fixing mechanism is provided with an upper sealing ring, one side of the upper fixing mechanism is provided with a lower cover, the outer surface of the upper end of the lower cover is provided with a lower sealing ring, and the lower sealing ring is located on the outer surface of the lower end of the upper sealing ring.

Preferably, the outer surface of one side of the outer connecting line is provided with a pull ring, one side of the pull ring is provided with a wire protecting cylinder, and the outer surface of the upper end of the wire protecting cylinder is provided with an anti-slip strip.

Preferably, the outer surface of the upper end of the temperature measuring mechanism is provided with a temperature display, the outer surface of the lower end of the temperature measuring mechanism is provided with a temperature probe, the outer surface of one side of the temperature probe is provided with a sealing gasket, and the sealing gasket is located on the outer surface of the lower end of the temperature measuring mechanism.

Preferably, the mutual inductor main body is fixedly connected through an upper fixing mechanism, the upper fixing mechanism is detachably connected with the temperature measuring mechanism, and the mutual inductor main body is fixedly connected with the external connecting wire.

Preferably, the upper fixing mechanism is fixedly connected with each component through an upper sealing ring, and the lower cover is fixedly connected with each component through a lower sealing ring.

Preferably, the outer connecting wire is detachably connected with each part through a wire protecting cylinder, the pull ring is movably connected with the wire protecting cylinder, and the anti-slip strip is fixedly connected.

Preferably, the temperature measuring mechanism is fixedly connected with each component through a temperature probe, and the temperature display is fixedly connected.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme is through last fixed establishment and the lower cover that sets up, seal the upper end and the lower extreme of mutual-inductor main part fixedly, adopt the sealed fixed mode of connecting that covers, reduce the damage of screw thread and bolt fastening to the inside wire rod of mutual-inductor, further promote the life of inner coil, promote the convenience of mutual-inductor and inner coil dismouting, be convenient for change with the maintenance to the detection of inner coil, it all has the sealing washer to go up fixed establishment and cover down, can effectively avoid external dust to get into inside, it is clean to keep the inner coil, further prolong the life of inner coil.

(2) This scheme is through the line protecting cylinder that sets up, carry out fixed connection with mutual-inductor main part and outer connecting wire through the screw thread on the line protecting cylinder, outer connecting wire is protected, promote the compactness of junction between mutual-inductor main part and the outer connecting wire, reduce and use for a long time and lead to the junction wire rod to expose and wear and tear, reduce the electric leakage, promote safe in utilization, there is the protection strip on the line protecting cylinder, wear-resisting antiskid, can effectively avoid outer connecting wire to skid when fixed, there is the pull ring on the line protecting cylinder, to the mutual-inductor of working under the humid environment, be convenient for hang it.

(3) This scheme is through the temperature measuring mechanism who sets up, coil operating temperature in to the mutual-inductor main part detects through temperature detection, the built-in alarm of temperature measuring mechanism, set for the reasonable temperature of coil through the setter, the temperature after the detection shows through temperature display, after exceeding the set temperature, the alarm sends the police dispatch newspaper sound, the suggestion inner coil high temperature, it dispels the heat to need, through the temperature measuring mechanism who sets up, avoid inside operating temperature too high, lead to the coil to soften and burn out the short circuit, promote factor of safety in utilization, there is seal ring on the temperature probe, can promote temperature measuring mechanism and last fixed establishment's connection compactness, further promote the detection accuracy of inside probe.

Drawings

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

fig. 2 is a schematic view of an upper fixing mechanism of the present invention;

FIG. 3 is a schematic structural view of a wire protecting tube of the present invention;

FIG. 4 is a schematic view of the temperature measuring mechanism of the present invention;

the reference numbers in the figures illustrate:

1. a transformer body; 2. an upper fixing mechanism; 201. an upper sealing ring; 202. a lower cover; 203. a lower seal ring; 3. a temperature measuring mechanism; 301. a temperature display; 302. a temperature probe; 303. a sealing gasket; 4. an outer connecting wire; 401. a pull ring; 402. a wire protecting cylinder; 403. and (4) an anti-slip strip.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a miniature current transformer includes a transformer body 1, an upper fixing mechanism 2 and a temperature measuring mechanism 3 are disposed on an upper outer surface of the transformer body 1, the upper fixing mechanism 2 is located on one side of the temperature measuring mechanism 3, an outer connecting wire 4 is disposed on an outer surface of one side of the transformer body 1, the outer connecting wire 4 is located on one side of the upper fixing mechanism 2, the transformer body 1 and the upper fixing mechanism 2 are fixedly connected by a sealing cover, damage to an inner coil caused by bolt connection is reduced, and the service life of the inner coil is prolonged.

Further, the lower extreme surface of going up fixed establishment 2 is provided with sealing washer 201, and one side of going up fixed establishment 2 is provided with lower cover 202, and the upper end surface of lower cover 202 is provided with lower sealing washer 203, and lower sealing washer 203 is located the lower extreme surface of last sealing washer 201, and upper and lower two sets of sealing washers adopt the superior rubber materials of pliability, and sealing performance is superior, through extruding inside air, can effectively promote the compactness of being connected with mutual-inductor main part 1.

Furthermore, the outer surface of one side of the outer connecting wire 4 is provided with a pull ring 401, one side of the pull ring 401 is provided with a wire protecting cylinder 402, the outer surface of the upper end of the wire protecting cylinder 402 is provided with an anti-slip strip 403, and a plurality of groups of anti-slip salient points are arranged on the anti-slip strip 403, so that the stability of the outer connecting wire 4 when being connected with other parts can be improved, and connection slip is reduced.

Further, the outer surface of the upper end of the temperature measuring mechanism 3 is provided with a temperature display 301, the outer surface of the lower end of the temperature measuring mechanism 3 is provided with a temperature detecting needle 302, the outer surface of one side of the temperature detecting needle 302 is provided with a sealing gasket 303, the sealing gasket 303 is located on the outer surface of the lower end of the temperature measuring mechanism 3, the temperature measuring mechanism 3 is internally provided with an alarm, the reasonable temperature of the coil is set through the setting device, the detected temperature is displayed through the temperature display 301, and the phenomenon that the coil is softened and burnt out to cause short circuit due to overhigh internal operation temperature is avoided.

Further, mutual-inductor main part 1 carries out fixed connection through last fixed establishment 2, goes up fixed establishment 2 and temperature measurement mechanism 3 and be connected for dismantling, and mutual-inductor main part 1 and outer connecting wire 4 are fixed connection, carry out fixed connection with mutual-inductor main part 1 and outer connecting wire 4 through the screw thread on the wire protecting cylinder 402, protect outer connecting wire 4, promote the compactness of junction between mutual-inductor main part 1 and the outer connecting wire 4, reduce and use for a long time and lead to the junction wire rod to expose and wear and tear.

Further, go up fixed establishment 2 and carry out fixed connection through last sealing washer 201 and each part, lower cover 202 carries out fixed connection through lower sealing washer 203 and each part, goes up all there is the sealing washer on fixed establishment 2 and the lower cover 202, can effectively avoid external dust to get into inside, keeps the inner coil clean, further prolongs the life of inner coil.

Further, outer connecting wire 4 can dismantle with each part through protecting wire section of thick bamboo 402 and be connected, and pull ring 401 and protecting wire section of thick bamboo 402 are swing joint, and antislip strip 403 is fixed connection, has pull ring 401 on protecting wire section of thick bamboo 402, to the mutual-inductor of working under the humid environment, is convenient for hang it.

Further, temperature measurement mechanism 3 carries out fixed connection through temperature probe 302 and each part, and temperature display 301 is fixed connection, has seal ring 303 on the temperature probe 302, can promote the connection compactness of temperature measurement mechanism 3 and last fixed establishment 2, further promotes the detection accuracy of inside probe.

The working principle is as follows: the utility model comprises a mutual inductor main body 1, an upper fixing mechanism 2, an upper sealing ring 201, a lower cover 202, a lower sealing ring 203, a temperature measuring mechanism 3, a temperature display 301, a temperature probe 302, a sealing washer 303, an external connecting wire 4, a pull ring 401, a wire protecting cylinder 402, an antislip strip 403 and other components, firstly, the upper end and the lower end of the mutual inductor main body 1 are sealed and fixed through the upper fixing mechanism 2 and the lower cover 202, the damage to the internal wire of the mutual inductor by screw thread and bolt fixation is reduced by adopting the mode of connecting and fixing the sealing covers, the service life of the internal coil is further prolonged, the convenience of the disassembly and assembly of the mutual inductor and the internal coil is improved, the detection and maintenance and replacement of the internal coil are convenient, the sealing rings are arranged on the upper fixing mechanism 2 and the lower cover 202, the external dust can be effectively prevented from entering the inside, the internal coil is kept clean, and the, secondly, the mutual inductor main body 1 and the external connecting wire 4 are fixedly connected through the thread on the wire protecting cylinder 402 through the arranged wire protecting cylinder 402, the external connecting wire 4 is protected, the tightness of the joint between the mutual inductor main body 1 and the external connecting wire 4 is improved, the exposure and abrasion of the wire at the joint caused by long-term use are reduced, the electric leakage is reduced, the use safety is improved, the wire protecting cylinder 402 is provided with an anti-slip strip 403 which is wear-resistant and anti-slip and can effectively prevent the external connecting wire 4 from slipping during fixing, the wire protecting cylinder 402 is provided with a pull ring 401 which is convenient for hanging the mutual inductor working in a humid environment, finally, the operating temperature of the coil in the mutual inductor main body 1 is detected through the arranged temperature measuring mechanism 3 through the temperature detecting needle 302, the temperature measuring mechanism 3 is internally provided with an alarm, the reasonable temperature of the coil is set through the setting device, and the detected temperature is displayed through the temperature display, after exceeding the settlement temperature, the alarm sends the police dispatch newspaper sound, and the suggestion inner coil high temperature need dispel the heat, and temperature measuring mechanism 3 through setting up avoids inside operating temperature too high, leads to the coil to soften and burns out the short circuit, promotes application safety factor, has seal ring 303 on the temperature probe 302, can promote the connection compactness of temperature measuring mechanism 3 and last fixed establishment 2, further promotes the detection accuracy of inside probe.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a miniature current transformer, includes mutual-inductor main part (1), its characterized in that: the outer surface of the upper end of the mutual inductor main body (1) is provided with an upper fixing mechanism (2) and a temperature measuring mechanism (3), the upper fixing mechanism (2) is located on one side of the temperature measuring mechanism (3), an outer connecting wire (4) is arranged on the outer surface of one side of the mutual inductor main body (1), and the outer connecting wire (4) is located on one side of the upper fixing mechanism (2).

2. The miniature current transformer of claim 1, wherein: the outer surface of the lower end of the upper fixing mechanism (2) is provided with an upper sealing ring (201), one side of the upper fixing mechanism (2) is provided with a lower cover (202), the outer surface of the upper end of the lower cover (202) is provided with a lower sealing ring (203), and the lower sealing ring (203) is located on the outer surface of the lower end of the upper sealing ring (201).

3. The miniature current transformer of claim 1, wherein: the outer cable protection device is characterized in that a pull ring (401) is arranged on the outer surface of one side of the outer connecting wire (4), a cable protection cylinder (402) is arranged on one side of the pull ring (401), and an anti-slip strip (403) is arranged on the outer surface of the upper end of the cable protection cylinder (402).

4. The miniature current transformer of claim 1, wherein: the temperature measuring device is characterized in that a temperature display (301) is arranged on the outer surface of the upper end of the temperature measuring mechanism (3), a temperature detecting needle (302) is arranged on the outer surface of the lower end of the temperature measuring mechanism (3), a sealing gasket (303) is arranged on the outer surface of one side of the temperature detecting needle (302), and the sealing gasket (303) is located on the outer surface of the lower end of the temperature measuring mechanism (3).

5. The miniature current transformer of claim 1, wherein: the mutual inductor main body (1) is fixedly connected through an upper fixing mechanism (2), the upper fixing mechanism (2) is detachably connected with a temperature measuring mechanism (3), and the mutual inductor main body (1) is fixedly connected with an outer connecting wire (4).

6. The miniature current transformer of claim 2, wherein: go up fixed establishment (2) and carry out fixed connection through last sealing washer (201) and each part, lower cover (202) carry out fixed connection through lower sealing washer (203) and each part.

7. The miniature current transformer of claim 3, wherein: the outer connecting wire (4) is detachably connected with each part through a wire protecting cylinder (402), the pull ring (401) is movably connected with the wire protecting cylinder (402), and the anti-slip strips (403) are fixedly connected.

8. The miniature current transformer of claim 4, wherein: the temperature measuring mechanism (3) is fixedly connected with each component through a temperature probe (302), and the temperature display (301) is fixedly connected.