CN218213409U - Test device for testing harmonic influence quantity of electric energy meter - Google Patents
Test device for testing harmonic influence quantity of electric energy meter Download PDFInfo
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- CN218213409U CN218213409U CN202222290709.2U CN202222290709U CN218213409U CN 218213409 U CN218213409 U CN 218213409U CN 202222290709 U CN202222290709 U CN 202222290709U CN 218213409 U CN218213409 U CN 218213409U
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Abstract
The utility model discloses a test device for testing harmonic influence quantity of an electric energy meter, belonging to the technical field of electric energy meter detection; the system comprises an operation table, wherein a program-controlled alternating current power supply, a wire holder and a display screen are arranged above the operation table; the wire holder comprises a boss, a wiring terminal and an insulating cap; the wiring terminal is arranged at the top end of the boss, and the insulating cap is sleeved on the wiring terminal; the upper portion of terminal comprises a plurality of clamping pieces and constitutes hollow round platform structure, the top of insulating cap is provided with the plug wire hole. The utility model has the advantages that the wiring part is raised by the boss, thereby facilitating the operation; moreover, the neatness of the wiring position can be better ensured, and the safety is improved; the clamping pieces form a hollow structure, so that the contact area of the clamping pieces and the electric wire is increased, the connection reliability is better guaranteed, and the safety is improved.
Description
Technical Field
The utility model relates to an electric energy meter detects technical field, especially relates to test device of test electric energy meter harmonic influence volume.
Background
In an electric power system, due to the use of half-wave rectification equipment, half-wave current appears in a power circuit to generate a direct current electric quantity component; when direct current exists in a current loop of the electric energy meter, the magnetic performance of a magnetic core of an electromagnetic current transformer of the electric energy meter can be changed and even saturated; therefore, the electromagnetic current transformer of the electric energy meter can not carry out accurate measurement, and the accuracy of the electric energy metering of the electric energy meter is influenced. Therefore, an electromagnetic current transformer in an electric energy meter needs to have the capability of resisting a direct current component, and a test device capable of testing the direct current and even harmonic influence quantity of the electric energy meter is also needed.
At present, the basic principle of a test device for testing the harmonic influence quantity of an electric energy meter is already improved. For example, a test device for testing direct current and even harmonic influence quantity of an electric energy meter with publication number CN204331016U comprises an electric energy meter, an electric energy meter calibration device for testing the electric energy metering accuracy of the electric energy meter, and a direct current source for outputting direct current to a current loop of the electric energy meter, wherein a voltage loop and a current loop of the electric energy meter are connected with a voltage loop and a current loop of the electric energy meter calibration device, an electric energy pulse output of the electric energy meter is connected to an electric energy pulse test input end of the electric energy meter calibration device, an output positive end of the direct current source is connected to a current outlet end of the current loop of the electric energy meter, an output negative end of the direct current source is connected to a current inlet end of the current loop of the electric energy meter, the test for the direct current and even harmonic influence quantity of the electric energy meter can be completed without dividing the current measurement loop into two current branches, and a balanced impedance in the current measurement loop are saved.
The publication realizes the functions of testing and experiment on the harmonic influence quantity of the electric energy meter through simple circuit design. The specific test needs to be matched with relevant test hardware devices. The existing experimental device adopts the shapes of wiring terminals, wire pressing blocks and the like, and has little defects in safety, reliability and convenience; meanwhile, electrodes for converting direct current are needed in experiments, wiring modes are changed conventionally, operation is complex, and efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving prior art, testing arrangement's wiring form exists not enoughly to and the comparatively loaded down with trivial details problem of operation, and the testing arrangement of the test electric energy meter harmonic influence volume that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the test device for testing the harmonic influence quantity of the electric energy meter comprises an operation table, wherein a program-controlled alternating-current power supply, a wire holder and a display screen are arranged above the operation table;
the wire holder comprises a boss, a wiring terminal and an insulating cap; the wiring terminal is arranged at the top end of the boss, and the insulating cap is sleeved on the wiring terminal;
the upper portion of terminal comprises a plurality of clamping pieces and constitutes hollow round platform structure, the top of insulating cap is provided with the plug wire hole.
In some embodiments, the lower portion of the post is provided with a through hole.
In some embodiments, the wire insertion hole is a counterbore structure; the diameter of the upper part of the counter bore structure is matched with the outer diameter of the electric wire, and the diameter of the lower part of the counter bore structure is matched with the outer diameter of the electric wire inner core.
In some embodiments, the wire holder comprises a standard electric energy meter wire holder and a tested electric energy meter wire holder.
In some embodiments, the standard electric energy meter wire holder is arranged at the upper left position of the operation table, and the tested electric energy meter wire holder is arranged at the right position of the operation table.
In some embodiments, an adjustable support is arranged below the operating platform;
the support comprises an internal thread block fixed below the operating platform and an adjusting block connected with the internal thread block; the top end of the adjusting block is provided with a screw which is screwed into the internal thread block.
In some embodiments, the wire holder further comprises a dc current wire holder.
In some embodiments, the dc current connection base is disposed at a left position of the console.
In some embodiments, a dc current electrode switching knob is further disposed on the console.
In some embodiments, the dc current electrode switching knob includes a knob, a wiring board disposed below the knob;
the wiring board is provided with a first contact group, a second contact group and a direct current access contact group; and an arc-shaped printing line is arranged at the lower part of the knob.
Compared with the prior art, the utility model provides a test device of test electric energy meter harmonic influence volume possesses following beneficial effect.
1. In the utility model, the wiring part is raised by the boss, which is convenient for operation; moreover, the neatness of the wiring position can be better ensured, and the safety is improved; the clamping pieces form a hollow structure, so that the contact area of the clamping pieces and the electric wire is increased, the connection reliability is better guaranteed, and the safety is improved.
2. The utility model has the advantages that the lower part of the binding post is provided with the through hole, so that the wire stripping device has stronger adaptability when being suitable for wire stripping with different lengths; the wire inserting hole is of a counter bore structure, so that the part which is not stripped is blocked, operators are assisted, and the danger caused by the fact that an inner core of the wire is exposed outside the insulating cap can be avoided.
3. The utility model, the position of the wire holder is arranged, which accords with the operation habit and improves the working efficiency; the direct current electrode switching knob is arranged, so that the direct current electrode can be directly adjusted, wiring operation is not needed, the efficiency is improved, and the direct current electrode switching knob is safer and more reliable.
Other advantages, objects, and features of the invention will be set forth in part in the description which follows; and will be apparent to those skilled in the art, to a certain extent, upon a study of the following; or may be learned by the practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a schematic structural diagram and a schematic sectional structural diagram of the terminal.
Fig. 4 is a schematic structural view and a schematic sectional structural view of the insulating cap.
Fig. 5 is a schematic structural diagram of the adjusting block.
Fig. 6 is a schematic view of the lower structure of the knob.
Figure 7 is a schematic diagram of a patch panel configuration.
In the figure:
1. an operation table;
2. a program-controlled alternating current power supply;
3. a wire holder; 301. a boss; 302. a binding post; 3021. a clip; 3022. a through hole; 303. an insulating cap; 3031. a wire insertion hole;
4. a display screen;
5. a standard electric energy meter wire holder;
6. a wire holder of the energy meter to be tested;
7. a support; 701. an internal thread block; 702. an adjusting block; 703. a screw;
8. a DC wire holder;
9. a direct current electrode switching knob; 901. a knob; 9011. a printing line; 902. a wiring board; 9021. a first contact set; 9022. a second contact set; 9023. the direct current is switched into the contact group.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-7, the test device for testing the harmonic influence quantity of the electric energy meter comprises an operation table 1; the operation table 1 provides a basic supporting structure and is in a plane shape; a program-controlled alternating current power supply 2, a wire holder 3 and a display screen 4 are arranged above the operating platform 1.
A cavity is arranged below the operating platform 1 and used for placing a control panel, a connecting wire and the like; for the program-controlled alternating current power supply 2, the display screen 4, the control panel and the like, the existing mature components are directly adopted; and the connection relation among the assemblies is wired according to a test principle.
Specifically, the wire holder 3 includes a boss 301, a post 302, and an insulating cap 303.
Wherein, the terminal 302 is arranged at the top end of the boss 301, and the insulating cap 303 is sleeved on the terminal 302.
The wiring part is lifted by the boss 301, so that the operation is more convenient; and, can guarantee the clean and tidy of wiring position better, improve the security.
Further, the upper part of the binding post 302 is formed into a hollow round platform structure by a plurality of clamping pieces 3021; the clamping piece 3021 is clamped by screwing the insulation cap 303 to hold the electric wire.
As shown in fig. 3, 4 clips 3021 are provided.
The clamping pieces 3021 are arranged in a plurality of shapes, so that the contact area between the clamping pieces and the electric wire can be increased, the reliability of connection can be better guaranteed, and the safety can be improved.
In cooperation, a wire insertion hole 3031 is provided at the top end of the insulating cap 303.
When in use, the electric wire is inserted into the insulating cap 303 through the wire inserting hole 3031; the insulating cap 303 is fitted over the terminal 302 and screwed down to gradually grip the wire with the clip 3021.
It can be understood that the outer diameter of the outer ring surface of the clamping piece 3021 gradually increases from the top to the lower part; and a shrinkage cavity inside the insulating cap 303 is matched, so that the clamping piece 3021 is wrapped and tightened in the screwing process.
In some embodiments, the lower portion of the post 302 is provided with a through hole 3022.
During testing, when the wire stripping with different lengths is met, the wire stripping device can penetrate through the wiring terminal 302, and has stronger adaptability.
It can be understood that there is a limit to the length of the wire stripping, which cannot be extended infinitely; under the condition of arranging the through hole 3022, the wire stripping size slightly longer than the whole length of the binding post 302 can be accommodated at the highest; if the growth continues, it may cause wire contact to occur at the lower portion; in use, the lower end of the binding post 302 penetrates through the boss 301, and the length application range of the binding post is enough to meet the requirement.
In some embodiments, the wire insertion hole 3031 is counter bored.
Please refer to fig. 4; the diameter of the upper part of the counter bore structure is matched with the outer diameter of the electric wire, and the diameter of the lower part of the counter bore structure is matched with the outer diameter of the electric wire inner core.
When the wire stripping device is used, after the wire is inserted, the part which is not stripped enters the wire inserting hole 3031 and is blocked, and the inner core of the wire is continuously inserted inwards; the auxiliary operating personnel can avoid the inner core of the electric wire from being exposed outside the insulating cap 303 to cause danger.
In some embodiments, the wire holder 3 includes a standard electric energy meter wire holder 5, a measured electric energy meter wire holder 6.
Preferably, the standard electric energy meter wire holder 5 is arranged at the upper left position of the operation table 1, and the tested electric energy meter wire holder 6 is arranged at the right position of the operation table 1.
The electric energy meter is designed according to the operation habit, and the compiled electric energy meter is placed at the upper left position, so that the influence on the operation is reduced; the to-be-detected object is placed on the right side, so that the to-be-detected object can be conveniently subjected to operations such as wiring and the like; with the matching, the working efficiency can be improved, and the use of personnel is more suitable.
In some embodiments, an adjustable support 7 is provided below the console 1; and adjusting the horizontal plane to obtain a good operating platform.
Specifically, the support 7 comprises an internal thread block 701 fixedly arranged below the operating platform 1 and an adjusting block 702 connected with the internal thread block 701; the top end of the adjusting block 702 is provided with a screw 703 screwed into the internal thread block 701.
Further, the adjusting block 702 is a circular truncated cone structure made of rubber.
Similarly, other forms of adjustment structures may also be employed; the multiplexing can be directly carried out at present.
In some embodiments, the wire holder 3 further comprises a dc current wire holder 8.
Preferably, the direct current wire holder 8 is arranged at the left position of the operating platform 1; as a common connecting component, the position planning is reasonable.
In some embodiments, a dc current electrode switching knob 9 is also provided on the console 1.
Through direct current electrode switching knob 9, can directly adjust direct current electrode, need not to carry out wiring operation again, raise the efficiency, and safe, reliable more.
In some embodiments, the dc current electrode switching knob 9 includes a knob 901, a terminal board 902 disposed below the knob 901.
Please refer to fig. 6-7; the wiring board 902 is provided with a first contact group 9021, a second contact group 9022 and a direct current access contact group 9023; an arc-shaped printing line 9011 is arranged at the lower part of the knob 901; under the rotation action of the knob 901, the printed wires 9011 respectively communicate the direct current access contact group 9023 with the first contact group 9021 or the second contact group 9022.
The wiring relationship between the wiring board 902 and other components may be set according to an experimental schematic.
It is understood that the contacts of the first contact set 9021, the second contact set 9022 and the dc access contact set 9023 are located on two concentric circles; the two printed lines 9011 coincide with the concentric circles, respectively, and have a length slightly greater than a quarter of a circular arc.
Similarly, the dc current electrode switching knob 9 has a simple circuit switch structure, and other types of switches may be used.
The utility model discloses during the use, connect the standard ammeter on standard electric energy meter connection terminal 5, the electric energy meter connection of waiting to detect is surveyed electric energy meter connection terminal 6, inserts the direct current source, opens the switch, test can.
In the utility model, the wiring part is raised by the boss 301, which is convenient for operation; moreover, the neatness of the wiring position can be better ensured, and the safety is improved; the clamping pieces 3021 form a hollow structure, so that the contact area between the clamping pieces and the electric wire is increased, the reliability of connection is better ensured, and the safety is improved. The lower part of the binding post 302 is provided with a through hole 3022, so that the binding post has stronger adaptability when being suitable for wire stripping with different lengths; the wire inserting hole 3031 is of a counter bore structure, so that the part which is not stripped is blocked, operators are assisted, and the danger caused by the fact that the inner core of the wire is exposed outside the insulating cap 303 can be avoided. The wire holder 3 is arranged, so that the operation habit is met, and the working efficiency is improved; the direct current electrode switching knob 9 is arranged, so that the direct current electrode can be directly adjusted, wiring operation is not needed, the efficiency is improved, and the method is safer and more reliable.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The test device for testing the harmonic influence quantity of the electric energy meter comprises an operation table (1), and is characterized in that a program-controlled alternating-current power supply (2), a wire holder (3) and a display screen (4) are arranged above the operation table (1);
the wire holder (3) comprises a boss (301), a wiring terminal (302) and an insulating cap (303); the wiring terminal (302) is arranged at the top end of the boss (301), and the insulating cap (303) is sleeved on the wiring terminal (302);
the upper part of the binding post (302) is of a hollow round table structure formed by a plurality of clamping pieces (3021), and the top end of the insulating cap (303) is provided with a wire inserting hole (3031).
2. The test device for testing the harmonic influence quantity of the electric energy meter according to the claim 1, characterized in that the lower part of the terminal (302) is provided with a through hole (3022).
3. The test device for testing the harmonic influence quantity of the electric energy meter according to claim 1, wherein the wire insertion hole (3031) is of a counter bore structure; the diameter of the upper part of the counter bore structure is matched with the outer diameter of the electric wire, and the diameter of the lower part of the counter bore structure is matched with the outer diameter of the inner core of the electric wire.
4. Test device for testing the harmonic influence quantity of an electric energy meter according to claim 1, characterized in that the wire holder (3) comprises a standard wire holder (5) of the electric energy meter and a wire holder (6) of the electric energy meter to be tested.
5. Test device for testing the harmonic influence quantity of an electric energy meter according to claim 4, characterized in that the standard electric energy meter wire holder (5) is arranged at the upper left position of the operation table (1), and the tested electric energy meter wire holder (6) is arranged at the right position of the operation table (1).
6. The test device for testing the harmonic influence quantity of the electric energy meter according to the claim 1, characterized in that an adjustable support (7) is arranged below the operation table (1);
the support (7) comprises an internal thread block (701) fixed below the operating platform (1) and an adjusting block (702) connected with the internal thread block (701); the top end of the adjusting block (702) is provided with a screw (703) which is screwed into the internal thread block (701).
7. Test device for testing the harmonic influence quantity of an electric energy meter according to claim 1, characterized in that the wire holder (3) further comprises a direct current wire holder (8).
8. Test device for testing the harmonic influence quantity of an electric energy meter according to claim 7, characterized in that the DC current connection base (8) is arranged at the left position of the operation table (1).
9. The test device for testing the harmonic influence quantity of the electric energy meter according to the claim 7, characterized in that the operation table (1) is further provided with a direct current electrode switching knob (9).
10. The test device for testing the harmonic influence quantity of the electric energy meter according to the claim 9, characterized in that the direct current electrode switching knob (9) comprises a knob (901), a wiring board (902) arranged below the knob (901);
the wiring board (902) is provided with a first contact group (9021), a second contact group (9022) and a direct current access contact group (9023); an arc-shaped printing line (9011) is arranged at the lower part of the knob (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222290709.2U CN218213409U (en) | 2022-08-30 | 2022-08-30 | Test device for testing harmonic influence quantity of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222290709.2U CN218213409U (en) | 2022-08-30 | 2022-08-30 | Test device for testing harmonic influence quantity of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218213409U true CN218213409U (en) | 2023-01-03 |
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ID=84628811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222290709.2U Active CN218213409U (en) | 2022-08-30 | 2022-08-30 | Test device for testing harmonic influence quantity of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218213409U (en) |
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2022
- 2022-08-30 CN CN202222290709.2U patent/CN218213409U/en active Active
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