CN204515121U - Electric energy meter AC magnetic field test unit - Google Patents
Electric energy meter AC magnetic field test unit Download PDFInfo
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- CN204515121U CN204515121U CN201520262869.3U CN201520262869U CN204515121U CN 204515121 U CN204515121 U CN 204515121U CN 201520262869 U CN201520262869 U CN 201520262869U CN 204515121 U CN204515121 U CN 204515121U
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Abstract
The utility model discloses a kind of electric energy meter AC magnetic field test unit, comprise Helmholtz coils, Helmholtz coils propulsion system and electric energy meter universal stage, Helmholtz coils propulsion system are connected with Helmholtz coils, Helmholtz coils propulsion system drive Helmholtz coils to rotate, electric energy meter universal stage is positioned at the rotational trajectory of Helmholtz coils, and the sense of rotation of electric energy meter universal stage and the sense of rotation of Helmholtz coils are crisscross arranged, electric energy meter universal stage loads and drives tested electric energy meter to rotate, the variable of tested electric energy meter under AC magnetic field interference is compared with the electricity inputing to tested electric energy meter, obtain the error in dipping of tested electric energy meter.So, Helmholtz coils and electric energy meter universal stage all can rotate and sense of rotation is crisscross arranged, and tested electric energy meter can be tested error in dipping under the AC magnetic field interference of different azimuth, different angles, improve the precision of test findings.
Description
Technical field
The utility model relates to technical field of electromagnetic measurement, especially, relates to a kind of electric energy meter AC magnetic field test unit.
Background technology
Electric energy meter is a kind of instrument being used for measuring section electric energy aggregate-value sometime, and in the use procedure of electric energy meter, if there is extraneous high-intensity magnetic field to disturb, it can produce very large error in dipping.Such as, induction type electric energy meter is when being subject to high-intensity magnetic field interference, and some of them magnetic device there will be demagnetization phenomenon as damp magnetic steel, causes permanent damage; The impact that the character wheel register that stepper motor in electronic electric energy meter promotes is subject to strong magnetic can stop rolling and upset, thus stops the accumulative of energy value.
In addition, high-intensity magnetic field also can make transformer in electric energy meter and mutual inductor generation magnetic saturation, error is increased, the phenomenon such as blank screen, deadlock even occurs.Thus there is some power consumers by applying high-intensity magnetic field on electric energy meter, causing the few charging of electric energy meter or not charging, thus carrying out the behavior of stealing.For solving the problem, need to ask electric energy meter to carry out AC magnetic field test when measurement verification, the concrete Helmholtz coils that adopts applies AC magnetic field, to measure its error in dipping to tested electric energy meter.
Helmholtz coils is made up of a pair radius and the identical current-carrying coil of the number of turn, and this is parallel and coaxial to coil, and coil-span equals coil radius, when passing to equidirectional electric current, near the mid point of axle in a big way in can produce uniform AC magnetic field.In existing electric energy meter AC magnetic field error test process, because of the limited location of Helmholtz coils and tested electric energy meter, the AC magnetic field that Helmholtz coils is produced, to the test limited angle of tested electric energy meter, causes test findings precision low.
Utility model content
The utility model provides a kind of electric energy meter AC magnetic field test unit, to solve in existing electric energy meter AC magnetic field error test process, the AC magnetic field that Helmholtz coils produces, to the test limited angle of tested electric energy meter, causes the technical matters that test findings precision is low.
The technical solution adopted in the utility model is as follows:
A kind of electric energy meter AC magnetic field test unit, comprising:
For generation of the Helmholtz coils of AC magnetic field;
The Helmholtz coils propulsion system rotated for driving Helmholtz coils, Helmholtz coils propulsion system are connected with Helmholtz coils;
For loading and the electric energy meter universal stage driving tested electric energy meter to rotate, electric energy meter universal stage is positioned at the rotational trajectory of Helmholtz coils, and the sense of rotation of electric energy meter universal stage and the sense of rotation of Helmholtz coils are crisscross arranged.
Further, the rotation of Helmholtz coils and the central axis upright of Helmholtz coils are arranged, and the rotational angle of Helmholtz coils is 0 ~ 360 °;
Electric energy meter universal stage rotates the plane at place and the rotation axis parallel of Helmholtz coils, and the rotational angle of electric energy meter universal stage is 0 ~ 360 °.
Further, the AC magnetic field that Helmholtz coils produces is 0 ~ 400A/m.
Further, electric energy meter AC magnetic field test unit also comprises two coaxial annular slabs, and a wherein coil of Helmholtz coils is placed in an annular slab, and another coil is placed in another annular slab,
Annular slab offers fixed hole, and two annular slabs are connected by fixed hole contraposition, and Helmholtz coils propulsion system are connected with annular slab, moves Helmholtz coils rotate in the lump to drive annular strip.
Further, electric energy meter AC magnetic field test unit also comprises and coordinating with Helmholtz coils propulsion system, with the carbon brush driving Helmholtz coils to rotate, Helmholtz coils propulsion system and carbon brush are arranged at the both sides of Helmholtz coils respectively along the rotation direction of Helmholtz coils.
Further, electric energy meter universal stage offers the electric quantity output end button for the electricity of equipment for three-phase electrical energy meter being inputed to tested electric energy meter, and for the variable under AC magnetic field interference of tested electric energy meter being sent to the electric energy meter communication interface of host computer.
Further, electric energy meter AC magnetic field test unit also comprises the bracket for being arranged on by electric energy meter universal stage in the rotational trajectory of Helmholtz coils.
Further, electric energy meter AC magnetic field test unit also comprises control box, and control box is provided with for controlling the first button that Helmholtz coils rotates, for controlling the second button that electric energy meter universal stage rotates and the 3rd button for controlling electric energy meter AC magnetic field test unit on/off.
Further, electric energy meter AC magnetic field test unit also comprises support, and Helmholtz coils is installed on support by Helmholtz coils propulsion system.
Further, the bottom of support is provided with and can locks universal wheel.
The utility model has following beneficial effect:
According to electric energy meter AC magnetic field test unit of the present utility model, Helmholtz coils propulsion system are connected with the Helmholtz coils for generation of AC magnetic field, driving Helmholtz coils rotates, electric energy meter universal stage is placed in the rotational trajectory of Helmholtz coils, electric energy meter universal stage is mounted with tested electric energy meter, electric energy meter universal stage drives tested electric energy meter to rotate, and then tested electric energy meter can be subject to AC magnetic field impact, the variable of tested electric energy meter under AC magnetic field interference is compared with the electricity inputing to tested electric energy meter, obtain the error in dipping of tested electric energy meter under AC magnetic field interference.So, Helmholtz coils and electric energy meter universal stage all can rotate, and sense of rotation is crisscross arranged, the tested electric energy meter on electric energy meter universal stage can be tested error in dipping under the AC magnetic field interference of different azimuth, different angles, improve the precision of test findings.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the electric energy meter AC magnetic field test unit of the utility model preferred embodiment.
Description of reference numerals: 10, Helmholtz coils; 20, Helmholtz coils propulsion system; 30, electric energy meter universal stage; 310, electric quantity output end button; 320, electric energy meter communication interface; 40, tested electric energy meter; 50, annular slab; 510, fixed hole; 60, carbon brush; 70, bracket; 80, control box; 810, the first button; 820, the second button; 830, the 3rd button; 90, support; 910, universal wheel can be locked.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
With reference to Fig. 1, preferred embodiment of the present utility model provides a kind of electric energy meter AC magnetic field test unit, comprise Helmholtz coils 10, Helmholtz coils propulsion system 20 and electric energy meter universal stage 30, Helmholtz coils propulsion system 20 are connected with the Helmholtz coils 10 for generation of AC magnetic field, Helmholtz coils propulsion system 20 drive Helmholtz coils 10 to rotate, electric energy meter universal stage 30 is positioned at the rotational trajectory of Helmholtz coils 10, and the sense of rotation of the sense of rotation of electric energy meter universal stage 30 and Helmholtz coils 10 is crisscross arranged, electric energy meter universal stage 30 loads and drives tested electric energy meter 40 to rotate, and then tested electric energy meter 40 can be subject to AC magnetic field impact, the variable of tested electric energy meter 40 under AC magnetic field interference is compared with the electricity inputing to tested electric energy meter 40, obtain the error in dipping of tested electric energy meter 40 under AC magnetic field interference.So, Helmholtz coils 10 and electric energy meter universal stage 30 all can rotate, and sense of rotation is crisscross arranged, tested electric energy meter 40 on electric energy meter universal stage 30 can be tested error in dipping under the AC magnetic field interference of different azimuth, different angles, improve the precision of test findings.
With reference to Fig. 1, in the preferred embodiment, alternatively, the rotation of Helmholtz coils 10 and the central axis upright of Helmholtz coils 10 are arranged, and the rotational angle of Helmholtz coils 10 is 0 ~ 360 °; Electric energy meter universal stage 30 rotates the plane at place and the rotation axis parallel of Helmholtz coils 10, and the rotational angle of electric energy meter universal stage 30 is 0 ~ 360 °, to realize Helmholtz coils 10 can produce the AC magnetic field in three-dimensional different directions, different angles interference to tested electric energy meter 40, precision is high.Specifically as shown in Figure 1, take horizontal line as the rotation of Helmholtz coils 10, Helmholtz coils 10 can rotate arbitrarily around 0 ~ 360 °, horizontal line, and the plane that electric energy meter universal stage 30 rotates place is surface level, and electric energy meter universal stage 30 can rotate arbitrarily at surface level.The phase place simultaneously also achieving AC magnetic field and tested electric energy meter 40 operating voltage can regulate arbitrarily at 0 ~ 360 °, and concrete degree of regulation can reach 0.01 °.For improving precision further, the control accuracy of the rotational angle of Helmholtz coils 10 and the rotational angle of electric energy meter universal stage 30 all can reach 0.03 °.Alternatively, for guaranteeing the reliability tested, the AC magnetic field that Helmholtz coils 10 produces rationally can be set to 0 ~ 400A/m.Particularly, the exciting current that the AC magnetic field that Helmholtz coils 10 produces can be exported by the three-phase supply of high precision, high stable realizes, and then analog AC magnetic field continuously adjustabe within the scope of 0 ~ 400A/m, and precision is high, good stability.
With reference to Fig. 1, in the preferred embodiment, alternatively, electric energy meter AC magnetic field test unit also comprises two coaxial annular slabs 50, and a wherein coil of Helmholtz coils 10 is placed in an annular slab 50, and another coil is placed in another annular slab 50, annular slab 50 offers fixed hole 510, two annular slabs 50 are connected by fixed hole 510 contraposition, and Helmholtz coils propulsion system 20 are connected with annular slab 50, drive Helmholtz coils 10 to rotate in the lump to drive annular slab 50.So, according to Helmholtz coils 10 own structural characteristics, this two annular slabs 50 are set, the security performance of warranty test.This annular slab 50 can adopt non-magnetic material epoxy resin to process, and insulation effect is good, and intensity is high, and cost is low, durable and processing is convenient.
With reference to Fig. 1, in the preferred embodiment, alternatively, electric energy meter AC magnetic field test unit also comprises and coordinating with Helmholtz coils propulsion system 20, the carbon brush 60 rotated to drive Helmholtz coils 10, Helmholtz coils propulsion system 20 and carbon brush 60 are arranged at the both sides of Helmholtz coils 10 respectively along the rotation direction of Helmholtz coils 10.Carbon brush 60 is a kind of slide contact member, is the device of transferring energy or signal between the fixed part of motor or generator or other rotating machineries and rotating part.So, carbon brush 60 can assist Helmholtz coils propulsion system 20 to drive Helmholtz coils 10 to rotate, and ensures Helmholtz coils 10 smooth rotation, and the anglec of rotation is accurate, good stability.Wherein, carbon brush 60 is the ripe parts in rotating machine art field, and its structure and principle of work do not repeat them here.Specific in the present embodiment, Helmholtz coils propulsion system 20 can select motor, while guaranteeing Helmholtz coils 10 smooth rotation, also can control Helmholtz coils 10 and rest on arbitrarily angled.
With reference to Fig. 1, in the preferred embodiment, alternatively, electric energy meter universal stage 30 offers the electric quantity output end button 310 for the electricity of equipment for three-phase electrical energy meter being inputed to tested electric energy meter 40, and for the variable under AC magnetic field interference of tested electric energy meter 40 being sent to the electric energy meter communication interface 320 of host computer.Particularly, electric quantity output end button 310 can comprise three-phase alternating voltage and current output terminal button, by cable, the electricity of equipment for three-phase electrical energy meter is inputed in tested electric energy meter 40, the variable of tested electric energy meter 40 is sent to host computer by electric energy meter communication interface 320 and carries out com-parison and analysis, completes the AC magnetic field error effect test of electric energy meter.This host computer is the content such as exportable calibration certificate and form also, and data processing function is powerful, and improve calibrating efficiency, operation is convenient, and reliability is high.Wherein, electric energy meter universal stage 30 can built-in stepper motor, rotates to drive tested electric energy meter 40.In process of the test, only need be arranged on needing the electric energy meter of monitoring on electric energy meter universal stage 30 and can test, the testing requirements of multiple electric energy meter can be met.Alternatively, electric energy meter AC magnetic field test unit also comprises control box 80, and control box 80 is provided with for controlling the first button 810 that Helmholtz coils 10 rotates, for controlling the second button 820 that electric energy meter universal stage 30 rotates and the 3rd button 830 for controlling electric energy meter AC magnetic field test unit on/off.So, staff controls the rotation of Helmholtz coils 10 by manual operation first button 810, as controlled the rotating forward reversion of Helmholtz coils 10, the start and stop controlling Helmholtz coils 10 or rotation etc.Manually operate the rotation that the second button 820 controls electric energy meter universal stage 30, as controlled the rotating forward reversion of electric energy meter universal stage 30, the start and stop controlling electric energy meter universal stage 30 or rotation etc.Manually operate the 3rd button 830 and control electric energy meter AC magnetic field test unit on/off, when the power supply of electric energy meter AC magnetic field test unit connected by operation the 3rd button 830, Helmholtz coils 10 powers on and understands automatic returning initial position, electric energy meter universal stage 30 powers on also can automatic returning initial position, simple operation.In other embodiments, host computer also can be adopted automatically to control the rotation of Helmholtz coils 10 and electric energy meter universal stage 30, realize the test of full automatic electric energy meter AC magnetic field error effect.
With reference to Fig. 1, in the preferred embodiment, alternatively, electric energy meter AC magnetic field test unit also comprises support 90, and Helmholtz coils 10 is installed on support 90 by Helmholtz coils propulsion system 20.Support 90 plays a supportive role, stabilized structure.Specific in the present embodiment, Helmholtz coils propulsion system 20, control box 80 and carbon brush 60 are all installed on support 90, wherein Helmholtz coils propulsion system 20 are installed on support 90 side, control box 80 is installed on support 90 opposite side, carbon brush 60 is installed on control box 80, Helmholtz coils 10 is between Helmholtz coils propulsion system 20 and carbon brush 60, bracket 70 is positioned at Helmholtz coils 10, and be arranged on support 90 or by Helmholtz coils propulsion system 20 and carbon brush 60 by the space in the middle of Helmholtz coils 10 and be fixed, sound construction, reliable and stable.Alternatively, for ease of carrying, the bottom of support 90 also can be provided with can lock universal wheel 910.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
According to electric energy meter AC magnetic field test unit of the present utility model, Helmholtz coils propulsion system 20 are connected with the Helmholtz coils 10 for generation of AC magnetic field, Helmholtz coils 10 is driven to rotate, electric energy meter universal stage 30 is placed in the rotational trajectory of Helmholtz coils 10, electric energy meter universal stage 30 is mounted with tested electric energy meter 40, electric energy meter universal stage 30 drives tested electric energy meter 40 to rotate, and then tested electric energy meter 40 can be subject to AC magnetic field impact, the variable of tested electric energy meter 40 under AC magnetic field interference is compared with the electricity inputing to tested electric energy meter 40, obtain the error in dipping of tested electric energy meter 40 under AC magnetic field interference.So, Helmholtz coils 10 and electric energy meter universal stage 30 all can rotate, and sense of rotation is crisscross arranged, tested electric energy meter 40 on electric energy meter universal stage 30 can be tested error in dipping under the AC magnetic field interference of different azimuth, different angles, improve the precision of test findings.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an electric energy meter AC magnetic field test unit, is characterized in that, comprising:
For generation of the Helmholtz coils (10) of AC magnetic field;
The Helmholtz coils propulsion system (20) rotated for driving described Helmholtz coils (10), described Helmholtz coils propulsion system (20) are connected with described Helmholtz coils (10);
For loading and the electric energy meter universal stage (30) driving tested electric energy meter (40) to rotate, described electric energy meter universal stage (30) is positioned at the rotational trajectory of described Helmholtz coils (10), and the sense of rotation of the sense of rotation of described electric energy meter universal stage (30) and described Helmholtz coils (10) is crisscross arranged.
2. electric energy meter AC magnetic field test unit according to claim 1, is characterized in that,
The rotation of described Helmholtz coils (10) and the central axis upright of described Helmholtz coils (10) are arranged, and the rotational angle of described Helmholtz coils (10) is 0 ~ 360 °;
Described electric energy meter universal stage (30) rotates the plane at place and the rotation axis parallel of described Helmholtz coils (10), and the rotational angle of described electric energy meter universal stage (30) is 0 ~ 360 °.
3. electric energy meter AC magnetic field test unit according to claim 1, is characterized in that,
The AC magnetic field that described Helmholtz coils (10) produces is 0 ~ 400A/m.
4. electric energy meter AC magnetic field test unit according to claim 1, is characterized in that,
Described electric energy meter AC magnetic field test unit also comprises two coaxial annular slabs (50), a wherein coil of described Helmholtz coils (10) is placed in annular slab described in (50), another coil is placed in annular slab described in another (50)
Described annular slab (50) offers fixed hole (510), two described annular slabs (50) are connected by described fixed hole (510) contraposition, described Helmholtz coils propulsion system (20) are connected with described annular slab (50), drive described Helmholtz coils (10) to rotate in the lump to drive described annular slab (50).
5. electric energy meter AC magnetic field test unit according to claim 1, is characterized in that,
Described electric energy meter AC magnetic field test unit also comprises and coordinating with described Helmholtz coils propulsion system (20), the carbon brush (60) rotated to drive described Helmholtz coils (10), described Helmholtz coils propulsion system (20) and described carbon brush (60) are arranged at the both sides of described Helmholtz coils (10) respectively along the rotation direction of described Helmholtz coils (10).
6. electric energy meter AC magnetic field test unit according to claim 1, is characterized in that,
Described electric energy meter universal stage (30) offers the electric quantity output end button (310) for the electricity of equipment for three-phase electrical energy meter being inputed to described tested electric energy meter (40), and for the variable under described AC magnetic field interference of described tested electric energy meter (40) being sent to the electric energy meter communication interface (320) of host computer.
7. electric energy meter AC magnetic field test unit according to claim 1, is characterized in that,
Described electric energy meter AC magnetic field test unit also comprises the bracket (70) for described electric energy meter universal stage (30) being arranged in the rotational trajectory of described Helmholtz coils (10).
8. electric energy meter AC magnetic field test unit according to claim 1, is characterized in that,
Described electric energy meter AC magnetic field test unit also comprises control box (80), and described control box (80) is provided with for controlling the first button (810) that described Helmholtz coils (10) rotates, for controlling the second button (820) that described electric energy meter universal stage (30) rotates and the 3rd button (830) for controlling described electric energy meter AC magnetic field test unit on/off.
9. the electric energy meter AC magnetic field test unit according to claim 1 ~ 8 any one, is characterized in that,
Described electric energy meter AC magnetic field test unit also comprises support (90), and described Helmholtz coils (10) is installed on described support (90) by described Helmholtz coils propulsion system (20).
10. electric energy meter AC magnetic field test unit according to claim 9, is characterized in that,
The bottom of described support (90) is provided with can lock universal wheel (910).
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| CN201520262869.3U CN204515121U (en) | 2015-04-28 | 2015-04-28 | Electric energy meter AC magnetic field test unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425186A (en) * | 2015-11-25 | 2016-03-23 | 国网宁夏电力公司电力科学研究院 | Magnetic field interference generating device for verification of iron-core earth current tester |
| CN106771388A (en) * | 2016-12-06 | 2017-05-31 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of electromagnetic window is tested with eight axle turntables |
| CN106886001A (en) * | 2017-04-28 | 2017-06-23 | 浙江和也健康科技有限公司 | A kind of controllable magnetic field generating means for biological study |
| CN111198350A (en) * | 2020-01-09 | 2020-05-26 | 国网冀北电力有限公司计量中心 | Power frequency magnetic field test detection system and method |
| CN113030828A (en) * | 2021-03-25 | 2021-06-25 | 河南省计量科学研究院 | Alternating magnetometer verification system and method |
| CN113808374A (en) * | 2021-09-17 | 2021-12-17 | 深圳市智联云控科技有限公司 | Temperature abnormity monitoring device for intelligent terminal |
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2015
- 2015-04-28 CN CN201520262869.3U patent/CN204515121U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425186A (en) * | 2015-11-25 | 2016-03-23 | 国网宁夏电力公司电力科学研究院 | Magnetic field interference generating device for verification of iron-core earth current tester |
| CN106771388A (en) * | 2016-12-06 | 2017-05-31 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of electromagnetic window is tested with eight axle turntables |
| CN106771388B (en) * | 2016-12-06 | 2019-08-16 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of eight axis turntables of electromagnetic window test |
| CN106886001A (en) * | 2017-04-28 | 2017-06-23 | 浙江和也健康科技有限公司 | A kind of controllable magnetic field generating means for biological study |
| CN106886001B (en) * | 2017-04-28 | 2019-10-29 | 和也健康科技有限公司 | A kind of controllable magnetic field generating device for biological study |
| CN111198350A (en) * | 2020-01-09 | 2020-05-26 | 国网冀北电力有限公司计量中心 | Power frequency magnetic field test detection system and method |
| CN113030828A (en) * | 2021-03-25 | 2021-06-25 | 河南省计量科学研究院 | Alternating magnetometer verification system and method |
| CN113808374A (en) * | 2021-09-17 | 2021-12-17 | 深圳市智联云控科技有限公司 | Temperature abnormity monitoring device for intelligent terminal |
| CN113808374B (en) * | 2021-09-17 | 2022-11-29 | 深圳市智联云控科技有限公司 | Temperature abnormity monitoring device for intelligent terminal |
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