CN1241025C - Electric energy (watt-hour) meter - Google Patents
Electric energy (watt-hour) meter Download PDFInfo
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- CN1241025C CN1241025C CN 03112174 CN03112174A CN1241025C CN 1241025 C CN1241025 C CN 1241025C CN 03112174 CN03112174 CN 03112174 CN 03112174 A CN03112174 A CN 03112174A CN 1241025 C CN1241025 C CN 1241025C
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- current
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- electric energy
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Abstract
The present invention discloses an electric energy (watt-hour) meter which belongs to the electricity consumption metering devices. The present invention mainly solves the problem that the existing product has poor metering precision and poor production technology and comprises a casing body, a voltage element, a current element, a kilowatt-hour recorder and magnetic steel which are arranged in the casing body. The present invention is characterized in that the voltage element and the current element form a single set of electromagnetic element; the voltage element is connected with a single set of wires between any two phase voltage; two-phase current coils corresponding to the voltage are respectively wound around an iron core of the current element; an additional short-circuit coil is also wound around the iron core of the current element, and a variable resistor is connected with the additional short-circuit coil. The present invention realizes the function of the accurate metering of three-phase electric energy, eliminates interference between electromagnetic elements, saves material consumption, reduces the weight of a rotating part, optimizes process technologies of fabrication, production, debugging and detection, enhances product precision and extends the service life of products.
Description
Affiliated technical field
The present invention relates to a kind of electricity consumption measuring apparatus, be specially a kind of three-phase electric energy meter.
Technical background
In the three-phase alternating current electrical network, if under the threephase load EQUILIBRIUM CONDITION, the metering method of tested three-phase electric energy uses phase three-wire three to exchange active energy (degree) table usually.Phase three-wire three exchanges the design technology project of active energy (degree) table for adopting three-phase voltage, biphase current.Any two alternate line voltage and its biphase currents in the three-phase interact.Utilize fixing current-carrying loop to produce magnetic flux, these magnetic fluxs and the Interaction Law of Electric Current of responding at rotating part (aluminium dish) produce two groups of rotating torques.As U
ABWith I
AAnd U
CBWith I
CIt promptly is the exemplary operation principle that phase three-wire three exchanges active energy (degree) table.When dial rotation, the induction current effect that produces in the magnetic flux of using permanent magnet and the rotating disk produces the moment of reaction, makes the rotating disk uniform rotation.By register, calculate the rotation number of turns of rotating disk then, it and tested electric energy are directly proportional, to measure tested electric energy.Adopt three-phase voltage and two-phase current to produce two groups of rotating torques, must have two groups of separate voltage iron core and current ferric cores, wind respectively with potential winding and current coil above.Iron core changes by siliconized plate, in order to produce voltage magnetic flux and current flux.Exchange in the work of active energy (degree) table at phase three-wire three, produce mutual electromagnetic interference (EMI) between two groups of separate electromagnetic components, and increased raw-material consumption; In process of production, the complicacy, particularly rotating part that has caused technology, frock is two turntable structures, and the weight of rotating part is increased, more than some directly influences the precision and the serviceable life of electric energy metrical, caused the loaded down with trivial details property in the processes such as processing, production, debugging, detection.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists, the object of the present invention is to provide that a kind of metering is accurate, production technology is good, save raw-material electric energy meter.
The technical scheme that technical solution problem of the present invention is taked is: it comprises housing, place the voltage component in the housing, current element, register and magnet steel, described housing is made up of drain pan and shell, frame is connected on the drain pan that is provided with a plurality of binding posts, disk between voltage component and current element is connected on the frame by bearings at both ends, the magnetic line of force of magnet steel is perpendicular to disk, register passes through worm screw, the rotating shaft of gear clutch disk, it is characterized in that: voltage component and current element are formed single group electromagnetic component, described voltage component connects single any two alternate line voltages of organizing, difference coiling and the corresponding biphase current coil of voltage on the iron core of current element; Also be wound with additional short-circuited coil on the iron core of current element, variable resistor is connected with additional short-circuited coil.
Beneficial effect of the present invention is as follows:
Adopt single group electromagnetic component, voltage component connects on the iron core of the alternate line electric current and voltage element of single group two, respectively coiling and the corresponding biphase current coil of voltage.The biphase current magnetic flux is on identity element like this, and under the different time, interact respectively at same voltage magnetic flux, the leading biphase current of voltage difference is 30 ° and 150 ° on its phase place, according to above-mentioned analysis, change leading 150 ° direction of current, then can obtain the angle of 30 ° in voltage delay electric current.So the metering electric energy principle of work of single group electromagnetic component and two groups of electromagnetic components is similar.Difference is the biphase current of single group electromagnetic component and the phase differential of single group voltage, it is the angle of lead and lag, with the biphase current of two groups of electromagnetic components respectively with the phase differential of two groups of voltages, the angle that is lead and lag is compared, its phase sequence difference, but angle is identical, and the character of the moment that rotates is identical.By the effect of dial rotation and magnet steel, and the rotating speed that obtains rotating disk is directly proportional with measured power, utilizes the rotating disk revolution of record that register is counted, and shows by the number of degrees of electric energy.Realized the function of accurate metering three-phase electric energy.Thereby eliminated the interference between electromagnetic component, saved raw-material consumption, reduced the weight of rotating part, optimized the technology of processing, production, debugging, testing process, improved the product precision, prolonged the serviceable life of product.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a main TV structure synoptic diagram of the present invention;
Fig. 2 is a right TV structure synoptic diagram of the present invention;
Fig. 3 is a watch core structural representation of the present invention;
Fig. 4 is an electrical schematic diagram of the present invention;
Fig. 5 is active vector figure of the present invention.
1. potential windings among the figure, 2. voltage iron core, 3. current coil, 4. current ferric core, 5. phase angle adjusting mechanism, 6. disk, 7-magnet steel, 8. register, 9. bearing, 10. frame, 11. bidding quotations, 12. drain pans, 13. shells.
Embodiment
With reference to accompanying drawing 1, Fig. 2, Fig. 3, the present invention includes potential winding 1, voltage iron core 2, current coil 3, current ferric core 4, phase angle adjusting mechanism 5, disk 6, magnet steel 7, register 8, bearing 9, frame 10, bidding quotation 11, drain pan 12, parts such as shell 13.
Potential winding 1 connects two alternate alternating voltages, and is in parallel with the practical application circuit.In designing requirement, making the voltage and the phase angle of work magnetic flux is 90, belongs to the pure inductance element, has a constant alternating magnetic field, uses the line footpath to be 0.13mm, the number of turn 9000.Voltage iron core 2: be formed by stacking by siliconized plate, in order to produce the magnetic flux of potential winding, magnetic resistance is less, and the magnetic flux that coil produced forms magnetic field along the shape of iron core, can reasonably be divided into work magnetic flux and inoperative magnetic flux.
Current coil 3 connects two-phase alternating current electric current and practical application circuit and is in series.Designing requirement is a pure resistance element, and to reach current work magnetic flux and electric current homophase, so the number of turn is less, the line footpath is thicker, and the electric current that passes through equates with actual current, and is directly proportional the variation of current coil decision rotating torque with the magnetic flux that forms.Current ferric core 4 is made up of siliconized plate, and the magnetic flux that current coil is produced forms two work magnetic fluxs, reduces the loss of coil flux, reaches the electric current of current coil and the linear relationship between rotating torque.
Phase angle adjusting mechanism 5: in the theory design, requiring voltage component is pure inductance, and current element is a pure resistive, to guarantee voltage, the phasing degree between current flux.For reaching this purpose, the additional short-circuited coil of coiling on current ferric core 4, and change the resistance of coil by variable resistor, changing the loss of magnetic flux in the current ferric core, thus regulation voltage, the phase angle between current flux.
Bearing 9 vertical support disks 6 adopt jewel, roll structure, and with the moment of friction in minimizing disk 6 rotation processes, and disc rotation speed and tested electric energy is non-linear.
Drain pan 12 is installed together with frame 10, guarantees the state of electric energy (degree) table operate as normal, protects the cleaning of movement, is provided with the lead-in clamp of power network line, and is connected in internal current, voltage circuit.Fixed position when also being provided with user installation simultaneously.Generally by at the bottom of the iron and bakeliteconnector combine.
Shell 13 is watered to penetrate by the ABS industrial plastic and forms, and is provided with glass or transparent window, so that read the data of metering electric energy and the technology operation parameter of electric energy (degree) table, mainly is the inner cleaning of protection electric energy (degree) table.
As Fig. 4, Fig. 5.Under the threephase load EQUILIBRIUM CONDITION, metering three-phase alternating current electric energy, adopting single group electromagnetic component is voltage component and current element.Voltage component can connect any two alternate line voltages, then is connected respectively with the corresponding biphase current of voltage as current element.Easy to use for the user, other one can pass through the terminal box short circuit mutually, thereby this product can be called phase three-wire three active energy (degree) table or two-phase two wires active energy (degree) table.
According to above technical scheme, single group electromagnetic component is a voltage component, the working method of three-phase alternating current active energy (degree) table that current element is formed, though can select several forms, its principle of work is consistent.Be U below with voltage
AB, electric current is I
AAnd I
BAnalyze.
The voltage that voltage component applied is the mutually alternate with B line voltage of A, and current element is coiling A phase and B phase current coil respectively then, from the vector plot (Fig. 5) of three-phase alternating current as can be seen, and U
ABBe ahead of I
A30 °, be ahead of I
B150 °.Then the A phase current produces forward moment, and the B phase current produces opposing torque, and is consistent with A for the moment that the B phase current is produced, and changes the coiling direction of B phase current coil, makes its working current be in reverse state, so voltage U
ABIn fact be in 30 ° of hysteresis with reverse B phase current on phase place, the moment that is produced is consistent with the moment that the A phase current produces, and has reached the duty of normal metering electric energy.
Can obtain as drawing a conclusion from Theoretical Calculation: the electric energy that phase three-wire three interchange active energy provided by the present invention (degree) table (or two-phase two wires) is measured equates with actual tested electric energy, can replace fully and adopt three-phase voltage, biphase current to be operated in two groups of phase three-wire threes interchange active energies (degree) tables under the electromagnetic component, to realize correctly measuring the purpose of three-phase alternating current active energy.
Except that the above, other concrete structures of the present invention, the those skilled in the art in present technique field need not to create work and can implement, and this place repeats no more.
Claims (1)
1, a kind of electric energy meter, comprise housing, place the voltage component in the housing, current element, register and magnet steel, described housing is made up of drain pan and shell, frame is connected on the drain pan that is provided with a plurality of binding posts, disk between voltage component and current element is connected on the frame by bearings at both ends, the magnetic line of force of magnet steel is perpendicular to disk, register passes through worm screw, the rotating shaft of gear clutch disk, it is characterized in that: voltage component and current element are formed single group electromagnetic component, described voltage component connects single any two alternate line voltages of organizing, difference coiling and the corresponding biphase current coil of voltage on the iron core of current element; Also be wound with additional short-circuited coil on the iron core of current element, variable resistor is connected with additional short-circuited coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112174 CN1241025C (en) | 2003-04-18 | 2003-04-18 | Electric energy (watt-hour) meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112174 CN1241025C (en) | 2003-04-18 | 2003-04-18 | Electric energy (watt-hour) meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1538180A CN1538180A (en) | 2004-10-20 |
| CN1241025C true CN1241025C (en) | 2006-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03112174 Expired - Fee Related CN1241025C (en) | 2003-04-18 | 2003-04-18 | Electric energy (watt-hour) meter |
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| Country | Link |
|---|---|
| CN (1) | CN1241025C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064820A (en) * | 2017-06-18 | 2017-08-18 | 昆明理工大学 | It is a kind of directly to see the low cost integration hourglass of the life of storage battery |
| CN107102185A (en) * | 2017-06-18 | 2017-08-29 | 昆明理工大学 | A kind of low cost integration hourglass kilowatt-hour meter |
| CN111445680A (en) * | 2019-01-16 | 2020-07-24 | 任红梅 | Wireless data uploading method for electric energy meter |
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2003
- 2003-04-18 CN CN 03112174 patent/CN1241025C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1538180A (en) | 2004-10-20 |
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