CN216485468U - Mutual inductor detection tool - Google Patents

Abstract

The utility model provides a mutual inductor detection tool, which can detect various detected mutual inductors, and comprises: the supporting table comprises a supporting plate for supporting one or more tested transformers and an adjusting mechanism capable of adjusting the height of the supporting plate; the detection piece is electrically connected with the detected mutual inductor; the first fixing device and the second fixing device are respectively arranged at two ends of the supporting platform; and the metal conducting plate is fixed between the first fixing device and the second fixing device, electrically connected with the power supply and in conductive fit or electromagnetic induction fit with the tested mutual inductor. The technical scheme of this application has solved the great problem of error of the detection structure of mutual-inductor among the correlation technique effectively.

Description

Mutual inductor detection tool

Technical Field

The utility model relates to the technical field of mutual inductor detection, in particular to a mutual inductor detection tool.

Background

The low-voltage current transformer is an important component of electric energy metering, is listed in a national strong inspection catalogue, and the measurement accuracy of the low-voltage current transformer is related to the fairness and accuracy of trade settlement and internal examination. The detection, calibration and verification of the low-voltage current transformer are accurate and reliable, and the fairness and justice of electric energy metering are concerned. The low-voltage current transformer used at present is divided into two types from the appearance structure and the installation mode: the difference between the double-turn type and the bus type lies in whether the current transformer is provided with a primary copper bar or not. The mutual inductor needs to be verified for the first time before being installed. And (5) mounting after the product is qualified.

In the related art, the detection or verification mode is to connect the mutual inductor on the detection table body, and carry out detection or verification through current and contrast. The wiring impedance of detection and verification influences the accuracy of measurement. If the impedance of the wiring is large, the secondary error of the current transformer increases.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a mutual inductor detection tool to solve the problem that the detection structure of a mutual inductor in the related art has a large error.

In order to achieve the above object, the present invention provides a mutual inductor detection tool, which can detect a plurality of detected mutual inductors, and the mutual inductor detection tool includes: the supporting table comprises a supporting plate for supporting one or more tested transformers and an adjusting mechanism capable of adjusting the height of the supporting plate; the detection piece is electrically connected with the detected mutual inductor; the first fixing device and the second fixing device are respectively arranged at two ends of the supporting platform; and the metal conducting plate is fixed between the first fixing device and the second fixing device, electrically connected with the power supply and in conductive fit or electromagnetic induction fit with the tested mutual inductor.

Further, the mutual inductor to be tested comprises a first mutual inductor and a second mutual inductor, when the mutual inductor detection tool detects the first mutual inductor, the metal conducting plate is in conductive fit with the first mutual inductor, the metal conducting plate comprises a first strip-shaped plate and a second strip-shaped plate, the first end of the first strip-shaped plate is fixed on the first fixing device, the second end of the first strip-shaped plate is connected with the first mutual inductor, the first end of the second strip-shaped plate is fixed on the second fixing device, and the second end of the second strip-shaped plate is connected with the first mutual inductor.

Further, the metal current conducting plate further comprises a third strip-shaped plate, and when the mutual inductor detection tool detects the second mutual inductor, the third strip-shaped plate penetrates through the second mutual inductor and is connected with the first fixing device and the second fixing device.

Further, first mutual-inductor is a plurality of and the interval sets up, and metal current conducting plate still includes the fourth strip board that sets up between two adjacent first mutual-inductors, is connected through the fixation clamp between first mutual-inductor and the metal current conducting plate.

Further, first fixing device and second fixing device all include the hydraulic pressure holder, and the cooperation of hydraulic pressure holder and metal current conducting plate centre gripping.

Further, the support table further comprises a base, an adjusting mechanism is arranged between the base and the support plate, and the adjusting mechanism moves to change the distance between the support plate and the base.

Furthermore, adjustment mechanism includes crane and regulation pole, and the crane sets up between base and backup pad, adjusts the pole and is connected with the crane drive.

Further, the crane includes the first body of rod and the second body of rod of articulated setting, the brace table still includes first mounting and second mounting, first mounting sets up on the base and towards the backup pad, the second mounting sets up in the backup pad and towards the base, the first end of the first body of rod sets up with first mounting is articulated, the first end of the second body of rod sets up with the second mounting is articulated, the movably setting of second end of the first body of rod and with the cooperation of backup pad butt, the movably setting of second end of the second body of rod and with the cooperation of base butt, adjust the second end of the pole drive first body of rod or the second end of the second body of rod and remove.

Furthermore, a nut is arranged at the second end of the second rod body, the adjusting rod comprises a screw rod, and the screw rod rotates to enable the nut to move along the axis of the screw rod so as to drive the second end of the second rod body to move.

Further, the distance between the support plate and the base is between 0 and 10 cm.

By applying the technical scheme of the utility model, the support table comprises a support plate and an adjusting mechanism, wherein the support plate is used for supporting one or more tested transformers. The detection piece is electrically connected with the detected mutual inductor to realize the detection of the detected mutual inductor, the first fixing device and the second fixing device are respectively arranged at two ends of the supporting table, the metal current-conducting plate is fixed between the first fixing device and the second fixing device, and the metal current-conducting plate is electrically connected with the power supply. Through foretell setting, the brace table can be supported the mutual-inductor that is surveyed to make the mutual-inductor that is surveyed and metal current conducting plate and first fixing device and second fixing device's rigidity, and guarantee the relative level in position of metal current conducting plate, can improve the accuracy of the result of being surveyed the mutual-inductor's detection like this effectively. Therefore, the technical scheme of the application effectively solves the problem that the error of the detection structure of the mutual inductor in the related technology is large.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram illustrating a second transformer mounting structure of an embodiment of a transformer detection tool according to the present invention;

FIG. 2 shows a schematic structural diagram of the instrument transformer detection tool of FIG. 1 for mounting a first instrument transformer;

fig. 3 is an exploded schematic view of a support table of the instrument transformer detection tool of fig. 1;

figure 4 shows an exploded view of the support table of figure 3 from another perspective.

Wherein the figures include the following reference numerals:

10. a support table; 11. a support plate; 12. an adjustment mechanism; 121. a lifting frame; 122. adjusting a rod; 13. a base; 14. a first fixing member; 15. a second fixing member; 21. a first fixing device; 22. a second fixing device; 30. a metal conductive plate; 31. a first strip plate; 32. a second strip plate; 33. a third strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and fig. 2, in this embodiment, the mutual inductor detection tool can detect a plurality of mutual inductors to be detected, and the mutual inductor detection tool includes: support table 10, detection piece, first fixing device 21, second fixing device 22 and metal conducting plate 30. The support table 10 includes a support plate 11 to support one or more transformers under test and an adjustment mechanism 12 capable of adjusting the height of the support plate 11. The detection piece is electrically connected with the detected mutual inductor. The first fixing device 21 and the second fixing device 22 are respectively disposed at both ends of the support table 10. The metal conducting plate 30 is fixed between the first fixing device 21 and the second fixing device 22, the metal conducting plate 30 is electrically connected with a power supply, and the metal conducting plate 30 is in conductive fit or electromagnetic induction fit with a tested transformer.

With the technical solution of the present embodiment, the supporting table 10 includes a supporting plate 11 and an adjusting mechanism 12, where the supporting plate 11 is used to support one or more tested transformers. The detection piece is electrically connected with the detected mutual inductor to realize the detection of the detected mutual inductor, the first fixing device 21 and the second fixing device 22 are respectively arranged at two ends of the supporting platform 10, the metal conducting plate 30 is fixed between the first fixing device 21 and the second fixing device 22, and the metal conducting plate 30 is electrically connected with a power supply. Through the arrangement, the supporting table 10 can support the mutual inductor to be tested, so that the positions of the mutual inductor to be tested and the metal conducting plate 30 and the first fixing device 21 and the second fixing device 22 are fixed, the relative level of the position of the metal conducting plate 30 is ensured, and the accuracy of the detection result of the mutual inductor to be tested can be effectively improved. Therefore, the technical scheme of the embodiment effectively solves the problem that the error of the detection structure of the mutual inductor in the related technology is large.

As shown in fig. 1 and fig. 2, in this embodiment, the tested mutual inductor includes a first mutual inductor and a second mutual inductor, when the mutual inductor detects the first mutual inductor, the metal conducting plate 30 is in conductive cooperation with the first mutual inductor, the metal conducting plate 30 includes a first strip plate 31 and a second strip plate 32, a first end of the first strip plate 31 is fixed on the first fixing device 21, a second end of the first strip plate 31 is connected with the first mutual inductor, a first end of the second strip plate 32 is fixed on the second fixing device 22, and a second end of the second strip plate 32 is connected with the first mutual inductor. Foretell first strip board 31 and second strip board 32 fixed connection respectively are at the both ends of first mutual-inductor and fix on first fixing device 21 and second fixing device 22, and the copper bar has been stretched out at the both ends of first mutual-inductor, and first strip board 31 and second strip board 32 are connected with the copper bar butt at first mutual-inductor both ends respectively to fix through fixing device, can realize switching on of the electric current of first strip board 31 and second strip board 32 like this effectively. And the above arrangement mode can ensure the positions of the first transformer and the first strip-shaped plate 31 as well as the second strip-shaped plate 32, thereby improving the detection accuracy.

It should be noted that the first transformer and the second transformer are different types of transformers, specifically, a complex turn transformer and a bus-type transformer.

As shown in fig. 1 and fig. 2, in the present embodiment, the metal conductive plate 30 further includes a third strip plate 33, and when the transformer detection tool detects the second transformer, the third strip plate 33 passes through the second transformer and is connected to the first fixing device 21 and the second fixing device 22. The third strip-shaped board 33 is inserted into the second transformer and connected with the first fixing device 21 and the second fixing device 22, and the position of the second transformer can be ensured by the support table, so that the third strip-shaped board 33 can pass through the second transformer.

As shown in fig. 1 and 2, in the present embodiment, the first transformers are multiple and arranged at intervals, the metal conductive plate 30 further includes a fourth strip plate arranged between two adjacent first transformers, and the first transformers are connected to the metal conductive plate 30 by fixing clips. The fourth strip is disposed between two adjacent first transformers, so that the adjacent transformers can be connected.

As shown in fig. 1 and 4, in the present embodiment, each of the first fixing device 21 and the second fixing device 22 includes a hydraulic clamping member, and the hydraulic clamping member is in clamping engagement with the metal conductive plate 30. The hydraulic clamp has a simple structure and can effectively fix the metal conductive plate 30.

As shown in fig. 1 and 4, in the present embodiment, the support table 10 further includes a base 13, the adjusting mechanism 12 is disposed between the base 13 and the support plate 11, and the adjusting mechanism 12 moves to change the distance between the support plate 11 and the base 13. The setting of base 13 makes holistic stable in structure, and the support is also more stable.

As shown in fig. 1 and 4, in the present embodiment, the adjusting mechanism 12 includes a lifting frame 121 and an adjusting rod 122, the lifting frame 121 is disposed between the base 13 and the supporting plate 11, and the adjusting rod 122 is drivingly connected to the lifting frame 121. The lifting frame 121 is simple in structure and convenient to set, and can effectively lift the supporting plate 11.

As shown in fig. 1 and fig. 4, in this embodiment, the lifting frame 121 includes a first rod and a second rod, the first rod and the second rod are hinged to each other, the supporting table 10 further includes a first fixing member 14 and a second fixing member 15, the first fixing member 14 is disposed on the base 13 and faces the supporting plate 11, the second fixing member 15 is disposed on the supporting plate 11 and faces the base 13, a first end of the first rod is hinged to the first fixing member 14, a first end of the second rod is hinged to the second fixing member 15, a second end of the first rod is movably disposed and is abutted to the supporting plate 11, a second end of the second rod is movably disposed and is abutted to the base 13, and the adjusting rod 122 drives the second end of the second rod to move. The first rod body and the second rod body are arranged in a crossed mode, the adjusting rod 122 drives the second end of the second rod body to move the second end of the second rod body, and then the second end of the first rod body also moves, so that the distance between the second end of the first rod body and the second end of the second rod body is increased, and the supporting plate is lifted.

Of course, the adjustment lever may also drive the second end of the first rod.

As shown in fig. 1 to 4, in the present embodiment, the second end of the second rod is provided with a nut, and the adjusting rod 122 includes a screw rod, and the screw rod rotates to make the nut move along the axis of the screw rod so as to drive the second end of the second rod to move. The matching mode of the screw and the nut is simple.

As shown in fig. 1 and 4, in the present embodiment, the distance between the support plate 11 and the base 13 is between 0 and 10 cm. The height of the upper part can ensure that the tested mutual inductor is stably arranged on the supporting plate, and the position correspondence of the tested mutual inductor and the metal conducting plate can be ensured. Specifically, the distance between the supporting plate 11 and the base 13 can be adjusted to any value of 0-10cm, such as 5cm, according to actual needs.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a mutual-inductor detects frock, its characterized in that, mutual-inductor detects frock can detect multiple mutual-inductor that is surveyed, mutual-inductor detects frock includes:

a support table (10) comprising a support plate (11) for supporting one or more of the transformers under test and an adjustment mechanism (12) capable of adjusting the height of the support plate (11);

the detection piece is electrically connected with the tested mutual inductor;

a first fixing device (21) and a second fixing device (22) which are respectively arranged at two ends of the supporting platform (10);

the metal conducting plate (30) is fixed between the first fixing device (21) and the second fixing device (22), the metal conducting plate (30) is electrically connected with a power supply, and the metal conducting plate (30) is in conductive fit or electromagnetic induction fit with the measured mutual inductor.

2. The mutual inductor detects frock of claim 1, characterized in that the mutual inductor under test includes first mutual inductor and second mutual inductor, when mutual inductor detects the frock and is right first mutual inductor is detected, metal conducting plate (30) with first mutual inductor electrically conductive cooperation, metal conducting plate (30) include first strip board (31) and second strip board (32), the first end of first strip board (31) is fixed on first fixing device (21), the second end of first strip board (31) with first mutual inductor is connected, the first end of second strip board (32) is fixed on second fixing device (22), the second end of second strip board (32) with first mutual inductor is connected.

3. The mutual inductor detection tool according to claim 2, wherein the metal conductive plate (30) further comprises a third strip-shaped plate (33), and when the mutual inductor detection tool detects the second mutual inductor, the third strip-shaped plate (33) penetrates through the second mutual inductor and is connected with the first fixing device (21) and the second fixing device (22).

4. The mutual inductor detects frock of claim 2, characterized in that, first mutual inductor is a plurality of and the interval sets up, metal conducting plate (30) still include set up the fourth strip board between two adjacent first mutual inductors, pass through the fixation clamp with between metal conducting plate (30) and be connected.

5. The mutual inductor detection tool according to claim 1, wherein the first fixing device (21) and the second fixing device (22) comprise hydraulic clamping pieces, and the hydraulic clamping pieces are in clamping fit with the metal conductive plates (30).

6. The mutual inductor detection tool according to claim 1, wherein the support table (10) further comprises a base (13), the adjusting mechanism (12) is disposed between the base (13) and the support plate (11), and the adjusting mechanism (12) moves to change a distance between the support plate (11) and the base (13).

7. The mutual inductor detection tool according to claim 6, wherein the adjusting mechanism (12) comprises a lifting frame (121) and an adjusting rod (122), the lifting frame (121) is arranged between the base (13) and the supporting plate (11), and the adjusting rod (122) is in driving connection with the lifting frame (121).

8. The mutual inductor detection tool according to claim 7, wherein the lifting frame (121) comprises a first rod body and a second rod body which are hinged to each other, the support table (10) further comprises a first fixing member (14) and a second fixing member (15), the first fixing member (14) is arranged on the base (13) and faces the support plate (11), the second fixing member (15) is arranged on the support plate (11) and faces the base (13), a first end of the first rod body is hinged to the first fixing member (14), a first end of the second rod body is hinged to the second fixing member (15), a second end of the first rod body is movably arranged and is in butt joint with the support plate (11), a second end of the second rod body is movably arranged and is in butt joint with the base (13), the adjusting rod (122) drives the second end of the first rod body or the second end of the second rod body to move.

9. The mutual inductor detection tool according to claim 8, wherein a nut is disposed at the second end of the second rod, and the adjusting rod (122) comprises a threaded rod, and the threaded rod rotates to enable the nut to move along an axis of the threaded rod so as to drive the second end of the second rod to move.

10. The mutual inductor detection tool according to claim 6, characterized in that the distance between the support plate (11) and the base (13) is between 0 and 10 cm.

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