Current transformer easy to install and capable of improving precision

Abstract

The utility model discloses a current transformer easy to install and capable of improving precision, which relates to the technical field of electric power systems and comprises a current transformer, a first auxiliary installation part, a second auxiliary installation part and a filter. During use, firstly, the first auxiliary mounting piece and the second auxiliary mounting piece are attached to the front end and the rear end of the current transformer respectively, and when the first preformed holes of the first auxiliary mounting piece and the second auxiliary mounting piece coincide with the first preformed holes formed in the peripheries of the front end and the rear end of the current transformer, the current transformer is mounted on the first auxiliary mounting piece. The first auxiliary installation part and the second auxiliary installation part are installed at the front end and the rear end of the current transformer respectively, and therefore the current transformer can be conveniently installed in the small drawer cabinet. Meanwhile, the stable supporting rods are inserted into the supporting holes of the supporting frame from the outside of the drawer cabinet, the fixing pieces are clamped into the two ends of the stable supporting rods through the fixing holes where the fixing pieces are inserted so that the current transformer can be fixed, and therefore the precision of the whole current transformer can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power systems, and particularly to an easily installed current transformer with improved accuracy. Background Technique

[0002] The origin of current transformers can be traced back to the early development period of power systems when scientists began to research and manufacture devices for measuring current. The earliest current transformers were actually step-up transformers that did not require external power support and thus belonged to passive devices. Although these early current transformers were simple in design.

[0003] With the development of technology, current transformers have undergone multiple improvements, including the introduction of Hall effect, switched current transformers, electronic current transformers, and finally modern digital current transformers. However, existing current transformers cannot ensure stability and accuracy during long-term operation.

[0004] Therefore, those skilled in the art have provided an easily installed current transformer with improved accuracy to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide an easily installed current transformer with improved accuracy to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An easily installed current transformer with improved accuracy includes a current transformer, a first auxiliary installation member, a second auxiliary installation member, and a filter. The middle of the front end of the current transformer is movably connected to the first auxiliary installation member, and the middle of the rear end of the current transformer is movably connected to the second auxiliary installation member. First reserved holes are opened around the front ends of the first auxiliary installation member and the second auxiliary installation member. The inner surface of the first reserved holes is movably connected to first installation screws. Clamping plates are fixedly connected to the upper sides of the front ends of the first auxiliary installation member. An installation rod is fixedly connected to the middle of the bottom end of the clamping plate. Installation grooves are fixedly connected to the left and right sides of the rear end of the second auxiliary installation member. The number of the first reserved holes and the first installation screws is four groups each.

[0008] As a further scheme of the utility model: A support frame is fixedly connected to the upper side of the left end of the current transformer. Support holes are opened at the upper sides of the front and rear ends of the support frame.

[0009] As a still further scheme of the utility model: The inner surface of the support hole is movably connected to a stable support rod, and the outer surface of the rear end of the stable support rod is movably connected to a fixing member.

[0010] As a further solution of the utility model: the middle of the right end of the current transformer is movably connected to the filter mounting member, and the filter is fixedly connected to the middle of the right end of the filter mounting member.

[0011] As a further solution of the utility model: second reserved holes are formed in the four circumferences of the left end of the filter mounting member, and the inner surface of the second reserved holes is movably connected to second mounting screws, and the number of the second reserved holes and the second mounting screws is four groups.

[0012] As a further solution of the utility model: the right side of the top of the current transformer is movably connected to a line guiding box, and line guiding holes are formed in the lower side of the left end of the line guiding box, and the number of the line guiding holes is two groups.

[0013] As a further solution of the utility model: a guiding box mounting hole is formed in the middle of the top of the line guiding box, and the inner surface of the guiding box mounting hole is movably connected to a third mounting screw.

[0014] As a further solution of the utility model: a wiring port is formed in the middle of the left end of the current transformer.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. When in use, first, the first auxiliary mounting member and the second auxiliary mounting member are respectively attached to the front and rear ends of the current transformer. When the first reserved holes of the first auxiliary mounting member and the second auxiliary mounting member coincide with the first reserved holes formed in the four circumferences of the front and rear ends of the current transformer, the first mounting screws can be inserted into the coincident first reserved holes and tightened, and the first auxiliary mounting member and the second auxiliary mounting member are respectively mounted on the front and rear ends of the current transformer, which is convenient for the current transformer to be installed in a small drawer cabinet; at the same time, by inserting the stable support rod into the support hole of the support frame from the outside of the drawer cabinet, and inserting the fixing member into the fixing hole to be clamped at both ends of the stable support rod for fixing to the current transformer, thereby improving the accuracy of the entire current transformer; then, the line guiding box is placed on the right side of the top of the current transformer, the third mounting screw is inserted into the guiding box mounting hole formed in the middle of the top of the line guiding box, the line guiding box is used for fixing the line, the line is inserted into the line guiding hole, led out from the left side of the line guiding box, and inserted into the wiring port, and the current transformer detects the line current led out through the line guiding hole, improving the accuracy and stability of the current transformer; by optimizing the installation structure, the installation error can be reduced, the installation accuracy of the current transformer can be improved, thereby improving the accuracy of the entire current transformer system. The easy-to-install and high-accuracy current transformer adopts a modular design, is simple and fast to install, can effectively reduce the installation difficulty, and save the installation time.

[0017] 2. During use, install the filter mounting piece at the middle fitting position on the right end of the current transformer. Insert the second mounting screw into the second reserved hole and tighten it. Then the filter can be installed at the right end of the current transformer, making the line port of the filter coincide with the wiring port of the current transformer. By using a high-frequency filter, it is used to filter out the noise in the signal of the current transformer, improve the measurement accuracy, and can filter out high-frequency noise. By optimizing the installation structure of the filter, the installation error can be reduced, the installation accuracy of the filter can be improved, and thus the accuracy and stability of the entire current transformer system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic structural diagram of an easily installed and accuracy-improved current transformer.

[0019] Figure 2 FIG. is a schematic structural diagram of the current transformer and the filter in an easily installed and accuracy-improved current transformer.

[0020] Figure 3 FIG. is a front view planar schematic diagram of the current transformer in an easily installed and accuracy-improved current transformer.

[0021] Figure 4 FIG. is a schematic structural diagram of the auxiliary mounting piece in an easily installed and accuracy-improved current transformer.

[0022] Figure 5 FIG. is a schematic structural diagram of the mounting screw in an easily installed and accuracy-improved current transformer.

[0023] In the figure: 1 - current transformer, 2 - first auxiliary mounting piece, 3 - first reserved hole, 4 - first mounting screw, 5 - mounting rod, 6 - clamping plate, 7 - second auxiliary mounting piece, 8 - mounting groove, 9 - support frame, 10 - support hole, 11 - stable support rod, 12 - fixing piece, 13 - filter mounting piece, 14 - second reserved hole, 15 - second mounting screw, 16 - filter, 17 - line guiding box, 18 - line guiding hole, 19 - guiding box mounting hole, 20 - third mounting screw, 21 - wiring port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment 1

[0026] Refer to Figures 1-5, this embodiment provides an easily installable and high-precision current transformer, including a current transformer 1, a first auxiliary mounting member 2, a first reserved hole 3, a first mounting screw 4, a mounting rod 5, a clamping plate 6, a second auxiliary mounting member 7, a mounting groove 8, a support frame 9, a support hole 10, a stable support rod 11, a fixing member 12, a filter mounting member 13, a second reserved hole 14, a second mounting screw 15, a filter 16, a line guiding box 17, a line guiding hole 18, a guiding box mounting hole 19, a third mounting screw 20, and a wiring port 21. The middle fitting at the front end of the current transformer 1 is movably connected to the first auxiliary mounting member 2, and the middle fitting at the rear end of the current transformer 1 is movably connected to the second auxiliary mounting member 7. First reserved holes 3 are opened around the front ends of the first auxiliary mounting member 2 and the second auxiliary mounting member 7. The inner surface of the first reserved hole 3 is movably connected to the first mounting screw 4. The upper sides of the front ends of the first auxiliary mounting member 2 are fixedly connected to the clamping plates 6, and the middle of the bottom end of the clamping plate 6 is fixedly connected to the mounting rod 5. The left and right sides of the rear end of the second auxiliary mounting member 7 are fixedly connected to the mounting grooves 8, and the number of the first reserved holes 3 and the first mounting screws 4 is four groups each. The upper side of the left end of the current transformer 1 is fixedly connected to the support frame 9, and support holes 10 are opened on the upper sides of the front and rear ends of the support frame 9. The inner surface of the support hole 10 is movably connected to the stable support rod 11, and the outer surface of the rear end of the stable support rod 11 is movably connected to the fixing member 12. The right side of the top end of the current transformer 1 is movably connected to the line guiding box 17, and line guiding holes 18 are opened on the lower sides of the left ends of the line guiding box 17, and the number of the line guiding holes 18 is two groups each. A guiding box mounting hole 19 is opened in the middle of the top end of the line guiding box 17, and the inner surface of the guiding box mounting hole 19 is movably connected to the third mounting screw 20. A wiring port 21 is opened in the middle of the left end of the current transformer 1; when in use, first, the first auxiliary mounting member 2 and the second auxiliary mounting member 7 are respectively attached to the front and rear ends of the current transformer 1. When the first reserved holes 3 of the first auxiliary mounting member 2 and the second auxiliary mounting member 7 coincide with the first reserved holes 3 opened around the front and rear ends of the current transformer 1, the first mounting screw 4 can be inserted into the coincident first reserved holes 3 and tightened, and the first auxiliary mounting member 2 and the second auxiliary mounting member 7 are respectively mounted on the front and rear ends of the current transformer 1, facilitating the installation of the current transformer 1 in a small drawer cabinet; at the same time, by inserting the stable support rod 11 into the support hole 10 of the support frame 9 from the outside of the drawer cabinet and inserting the fixing holes of the fixing member 12 into both ends of the stable support rod 11 for fixing to the current transformer 1, the precision of the entire current transformer 1 can be improved;Then, place the line guide box 17 on the right side of the top of the current transformer 1. Insert the third mounting screw 20 into the guide box mounting hole 19 drilled in the middle of the top of the line guide box 17. The line guide box 17 is used to fix the line. Insert the line into the line guide hole 18, lead it out from the left side of the line guide box 17, and insert it into the wiring port 21. The current transformer 1 detects the line current led out through the line guide hole 18, improving the accuracy and stability of the current transformer 1.

[0027] Embodiment 2

[0028] Refer to Figures 1-2 , this embodiment is based on the previous embodiment. The difference from the previous embodiment is that a filter mounting member 13 is movably connected to the middle fitting portion on the right end of the current transformer 1. A filter 16 is fixedly connected to the middle of the right end of the filter mounting member 13. Four second reserved holes 14 are formed around the left end of the filter mounting member 13. The inner surface of the second reserved hole 14 is movably connected to a second mounting screw 15, and the number of the second reserved holes 14 and the second mounting screws 15 is four groups. When in use, install the filter mounting member 13 at the middle fitting portion on the right end of the current transformer 1. Insert the second mounting screw 15 into the second reserved hole 14 and tighten it. Then the filter 16 can be installed at the right end of the current transformer 1, making the line port of the filter 16 coincide with the wiring port 21 of the current transformer 1. By adopting a high-frequency filter 16, it is used to filter out the noise in the signal of the current transformer 1, improving the measurement accuracy and filtering out high-frequency noise.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A current transformer that is easy to install and has high precision, comprising a current transformer (1), a first auxiliary mounting member (2), a second auxiliary mounting member (7) and a filter (16), characterized in that: The middle joint of the front end of the current transformer (1) is movably connected to the first auxiliary mounting piece (2), and the middle joint of the rear end of the current transformer (1) is movably connected to the second auxiliary mounting piece (7). The front ends of the first auxiliary mounting piece (2) and the second auxiliary mounting piece (7) are provided with first reserved holes (3) around their peripheries, and the inner surfaces of the first reserved holes (3) are movably connected to the first mounting screws (4). The upper side of the front end of the first auxiliary mounting piece (2) is fixedly connected to the clamping plate (6), and the middle of the bottom end of the clamping plate (6) is fixedly connected to the mounting rod (5). The left and right sides of the rear end of the second auxiliary mounting piece (7) are fixedly connected to the mounting grooves (8), and the number of the first reserved holes (3) and the first mounting screws (4) is four groups.

2. The easy-to-install and high-precision current transformer according to claim 1 is characterized in that: The upper left end of the current transformer (1) is fixedly connected to a support frame (9), and support holes (10) are provided on the upper sides of both front and rear ends of the support frame (9).

3. The easy-to-install and high-precision current transformer according to claim 2 is characterized in that: The inner surface of the support hole (10) is movably connected to the stabilizing support rod (11), and the outer surface of the rear end of the stabilizing support rod (11) is movably connected to the fixing piece (12).

4. The easy-to-install and high-precision current transformer according to claim 1 is characterized in that: The middle part of the right end of the current transformer (1) is movably connected to the filter mounting member (13), and the middle part of the right end of the filter mounting member (13) is fixedly connected to the filter (16).

5. The easy-to-install and high-precision current transformer according to claim 4 is characterized in that: Second reserved holes (14) are provided around the left end of the filter mounting member (13), the inner surface of the second reserved hole (14) is movably connected to a second mounting screw (15), and the number of the second reserved hole (14) and the second mounting screw (15) are both four groups.

6. The easy-to-install and high-precision current transformer according to claim 1 is characterized in that: The top right side of the current transformer (1) is movably connected to a line guide box (17), and line guide holes (18) are provided on the lower left side of the line guide box (17), and the number of the line guide holes (18) is two groups.

7. The easy-to-install and high-precision current transformer according to claim 6 is characterized in that: A guide box mounting hole (19) is provided at the middle of the top of the line guide box (17), and the inner surface of the guide box mounting hole (19) is movably connected to a third mounting screw (20).

8. The easy-to-install and high-precision current transformer according to claim 1, characterized in that: A connection port (21) is provided at the middle of the left end of the current transformer (1).

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