CN109557348B - Magnetic torque positive sequence and negative sequence self-conversion device for intelligent electric energy meter - Google Patents
Magnetic torque positive sequence and negative sequence self-conversion device for intelligent electric energy meter Download PDFInfo
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- CN109557348B CN109557348B CN201811432041.2A CN201811432041A CN109557348B CN 109557348 B CN109557348 B CN 109557348B CN 201811432041 A CN201811432041 A CN 201811432041A CN 109557348 B CN109557348 B CN 109557348B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/17—Compensating for errors; Adjusting or regulating means therefor
- G01R11/19—Compensating for errors caused by disturbing torque, e.g. rotating-field errors of polyphase meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/17—Compensating for errors; Adjusting or regulating means therefor
- G01R11/22—Adjusting torque, e.g. adjusting starting torque, adjusting of polyphase meters for obtaining equal torques
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Abstract
The invention discloses a magnetic torque positive sequence and negative sequence self-conversion device for an intelligent electric energy meter, which comprises a digital display screen, an electric energy meter main body, a wiring terminal seat, a pulse butt joint device and a fixing bolt, wherein the back surface of the digital display screen is nested on the front surface of the electric energy meter main body, and the device has the advantages that under the action of a magnetic torque butt joint device, the electric energy meter can be switched between three power supplies which are connected in sequence and in negative sequence, when in conversion, the positive item coupler and the staggered connector inside the converter are mutually matched to stabilize irregular pulses, meanwhile, the voltage is converted into regular voltage pulses, the acting force generated by the working magnetic flux between the electromagnetic units is reduced, so that the error of electric charge calculation is reduced, meanwhile, under the action of the double-item top coupler, the rotation of the double-item top coupler can be stabilized, the loss and the jumping caused by the mutual motion friction of the double-item top coupler are avoided, the contact performance is prevented from being influenced, and the continuity of the electric connection is improved.
Description
Technical Field
The invention relates to the field of intelligent home furnishing, in particular to a magnetic torque positive sequence and negative sequence self-conversion device for an intelligent electric energy meter.
Background
The intelligent electric energy meter is a three-phase electric meter and is composed of a measuring unit, a data processing unit, a communication unit and the like, and the electric energy meter has the functions of electric energy metering, data processing, real-time monitoring, automatic control, information interaction and the like.
However, after the three-phase intelligent electric energy meter is switched on, irregular pulses are generated due to three-phase voltage, so that working magnetic fluxes of one group of electromagnetic units and the other group of electromagnetic units in the measuring unit interact to generate torque, meanwhile, eddy current generated by one magnetic pole of the inductance coil interacts with voltage magnetic fluxes of the other magnetic pole to generate torque, and at the moment, the two torques interact to easily cause that the disc still rotates for a whole circle when a current circuit is not loaded, so that electricity charge error is caused.
Disclosure of Invention
The invention aims to provide a magnetic torque positive sequence and negative sequence self-conversion device for an intelligent electric energy meter, aiming at solving the problem that after the three-phase intelligent electric energy meter is switched on, because the three-phase voltage generates irregular pulses, the working magnetic flux of one group of electromagnetic units and the working magnetic flux of the other group of electromagnetic units in a measuring unit interact to generate torque, and simultaneously, the eddy current generated by one magnetic pole of an inductance coil interacts with the voltage magnetic flux of the other magnetic pole to generate torque, and at the moment, the two torques interact to easily cause that a disc still rotates for a whole circle when a current circuit is unloaded, so that the electricity charge is miscounting.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an intelligent magnetic torque positive sequence negative sequence self-conversion device for electric energy meter, its structure includes: the back surface of the digital display screen is nested on the front surface of the electric energy meter main body, the lower end of the electric energy meter main body is provided with a wiring end seat and is electrically connected with the wiring end seat, the pulse butt joint device is nested in the electric energy meter main body, the fixed bolt is embedded in the upper left corner of the electric energy meter main body, the pulse butt joint device comprises a magnetic moment butt joint device, a double-phase top joint device, a positioning clamping seat, a phasing spiral device, a circular moving connector, a fixed rolling joint base and a connecting double-phase slip ring, a double-phase jacking connector is arranged below the magnetic moment butt connector, the upper surface of the double-phase jacking connector is attached to the annular movable connector and is electrically connected with the annular movable connector, the upper end of the annular moving connector is nested below the magnetic moment butt-joint device, the fixed rolling connection base is arranged in the middle of the connection double-phase slip ring, and the magnetic moment butt-joint device is nested below the connection double-phase slip ring.
In order to optimize the technical scheme, the method further comprises the following steps:
preferably, the magnetic torque butt-joint device comprises a pulse stabilizing linkage shell, a limiting and buffering block, an inverse butt-joint connector, a positive butt-joint device and a magnetic torquer, wherein the limiting and buffering block is arranged on the right side of the pulse stabilizing linkage shell and is of an integrated structure, the lower surface of the inverse butt-joint connector is attached to the upper surface of the pulse stabilizing linkage shell, the positive butt-joint device is nested in the pulse stabilizing linkage shell, the magnetic torquer is arranged above the pulse stabilizing linkage shell, and the front surface and the back surface of the limiting and buffering block are respectively nested with a soft plastic plate, so that the magnetic torque butt-joint device can play a role in delaying buffering when rotating and is beneficial to absorbing impact force in high-speed rotation.
Preferably, the positive and negative coupler comprises a low silver layer membrane electrode, a wafer, a high silver layer membrane electrode, a frequency divider, a sliding connection plate and a cross connector, wherein the upper surface of the low silver layer membrane electrode is attached to the lower surface of the wafer, the high silver layer membrane electrode is welded above the wafer, the upper end of the high silver layer membrane electrode is electrically connected with the lower end of the frequency divider through a lead, the sliding connection plate is nested above the frequency divider, the cross connector is arranged on the left side of the wafer, and when the upper end and the lower end of the wafer are connected with irregular pulse voltage, an external electric field is generated at the upper end and the lower end of the wafer, so that the wafer can be forced to deform, and the output voltage enables pulses to be stable.
Preferably, the cross connector comprises an orthogonal transmission line, an inverse connector and an inverse cross line, the right end of the orthogonal transmission line is nested in the upper left corner of the inverse connector, and the upper right corner of the inverse connector is provided with the inverse cross line and is electrically connected with the inverse cross line.
As preferred mode, diphase top alling oneself with the ware by first looks interface, push away the snap ring piece, flexible glue contactor, stably touch alling oneself with the ware, stationary phase seat, insulation board, end looks interface, location lug, top brush groove and constitute, first looks interface nestification is in the below of stationary phase seat, push away the snap ring piece nestification in the flexible glue contactor, the inboard welding of flexible glue contactor has stably to touch alling oneself with the ware, the right side of the lower extreme of stationary phase seat is equipped with end looks interface, end looks interface and top brush groove electrically conductive connection, the top of stationary phase seat and structure as an organic whole are located to the location lug, it is nested in the top of stationary phase seat to push away the brush groove, the surface of insulation board and the inboard surface phase seat of stationary phase seat laminate mutually, the nested outer loop that pushes away the snap ring piece has the torsional spring, can play the ability of anti-push in, with the stable meshing of multinomial electric wire, avoid droing.
Preferably, the positioning clamping seat is arranged on the front side and the right side of the device and is limited by ninety degrees.
Advantageous effects
The invention relates to a magnetic torque positive sequence and negative sequence self-conversion device for an intelligent electric energy meter, when three-phase voltage connected with the electric energy meter generates irregular pulse, the working magnetic fluxes of a plurality of groups of electromagnetic units interact to cause a magnetic torque device of a magnetic torque butt-joint device to induce electromagnetic force, under the action of the self-body, torque is generated to drive a circular motion connector to rotate clockwise, under the action of a positioning clamping seat, the circular motion connector rotates ninety degrees on the inner surface of a top brush groove, power supplies at two ends of the circular motion connector are connected with a cross connector, at the moment, two ends of a wafer in the cross connector are connected with irregular pulse voltage, an external electric field is generated at the upper end and the lower end of the wafer to force the wafer to deform, the output voltage stabilizes the pulse, after passing through the reverse connector, the first power supply and the last power supply are reversely connected to an orthogonal transmission line and a reverse cross connection line, at the moment, under the action of a frequency divider, the sudden change pulse is filtered, the stability of pulse voltage is improved, the electric meter is switched on, the three-phase sequence of the electric energy meter is automatically switched on in a reverse direction, the torque generated by the electromagnetic unit and the inductance coil is reduced, the voltage pulse is stabilized, the rotating angle of a disc of the electric energy meter in the no-load state is reduced, and the rotating angle of the electric energy meter is small enough to be ignored.
The beneficial effects are that: under the action of the magnetic moment butt connector, the electric energy meter can be switched on a three-phase power supply in sequence and in reverse sequence, irregular pulses are stabilized under the mutual matching of the normal phase butt connector and the staggered connector in the electric energy meter during switching, the irregular pulses are converted into regular voltage pulses, the acting force generated by working magnetic flux between the electromagnetic units is reduced, the error of electric charge calculation is reduced, and meanwhile, under the action of the two-phase butt connector, the rotation of the electric energy meter can be stabilized, the loss and the jumping caused by the mutual motion friction of the electric energy meter are avoided, the contact performance is influenced, and the continuity of electric connection is improved.
Drawings
Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of the embodiments of the invention when taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a magnetic torque positive sequence and negative sequence self-conversion device for an intelligent electric energy meter according to the present invention.
Fig. 2 is a schematic front sectional view of the pulse docking device of the present invention.
Fig. 3 is a schematic perspective view of the magnetic moment docking device of the present invention.
Fig. 4 is a schematic view of a front section of the positive phase-to-counter coupler of the present invention.
FIG. 5 is a schematic diagram of a cross-sectional left view of the present invention.
Fig. 6 is a schematic perspective view of a dual phase interconnector of the present invention.
Description of reference numerals: a digital display screen-1, an electric energy meter main body-2, a terminal base-3, a pulse butt joint device-4, a fixing bolt-5, a magnetic moment butt joint device-401, a two-phase top joint device-402, a positioning clamp base-403, a phasing screw device-404, a circular moving connector-405, a fixed rolling joint base-406, a connecting two-phase slip ring-407, a stable pulse joint shell-4011, a limit slow-retaining block-4012, an inverse phase counter joint-4013, a positive phase counter joint device-4014, a magnetic torquer-4015, a low silver layer membrane pole-40141, a wafer-40142, a high silver layer membrane pole-40143, a frequency divider-40144, a sliding joint plate-40145, a staggered connector-40146, an orthogonal transmission line-401461, an inverse joint device-401462, an inverse cross connection line-401463, a first phase interface-4021, Push snap ring block-4022, soft rubber contactor-4023, stable contactor-4024, fixed phase seat-4025, insulating plate-4026, end phase interface-4027, positioning bump-4028, and top brush groove-4029.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to fig. 6, the present invention provides a magnetic torque positive sequence and negative sequence self-conversion device for an intelligent electric energy meter: the structure includes: the pulse butt joint device comprises a digital display screen 1, an electric energy meter main body 2, a wiring end seat 3, a pulse butt joint device 4 and a fixing bolt 5, wherein the back surface of the digital display screen 1 is embedded on the front surface of the electric energy meter main body 2, the wiring end seat 3 is arranged at the lower end of the electric energy meter main body 2 and is electrically connected with the lower end of the electric energy meter main body 2, the pulse butt joint device 4 is embedded in the electric energy meter main body 2, and the fixing bolt 5 is embedded in the upper left corner of the electric energy meter main body;
the pulse docking device 4 comprises a magnetic torque docking device 401, a two-phase top coupling device 402, a positioning clamping seat 403, a phasing screw 404, a circular moving connector 405, a fixed rolling coupling base 406 and a connection two-phase slip ring 407;
a double-phase jacking connector 402 is arranged below the magnetic torque butt connector 401, the upper surface of the double-phase jacking connector 402 is attached to and electrically connected with the annular movable connector 405, the upper end of the annular movable connector 405 is nested below the magnetic torque butt connector 401, the fixed rolling connection base 406 is arranged in the middle of the double-phase slip ring 407, and the magnetic torque butt connector 401 is nested below the double-phase slip ring 407.
Preferably, the magnetic torque docking device 401 comprises a pulse stabilizing linkage shell 4011, a limit slow-keeping block 4012, an inverse couplet 4013, an inverse couplet 4014 and a magnetic torque device 4015, the right side of the vein stabilizing linkage shell 4011 is provided with a limit buffer block 4012 and is of an integrated structure, the lower surface of the inverse antithetical couplet joint 4013 is attached to the upper surface of the pulse stabilizing linkage shell 4011, the positive and opposite connectors 4014 are nested in the pulse stabilizing linkage shell 4011, the magnetic torquer 4015 is arranged above the pulse stabilizing linkage shell 4011, the front and the back of the limiting and delaying block 4012 are respectively nested with soft plastic plates, can play a role of delaying buffer force when rotating, is beneficial to absorbing impact force in high-speed rotation, the magnetic torquer 4015 is a magnetic network which is connected in a staggered way, and can induce electromagnetic torque to generate certain rotating force when a large amount of leakage magnetic flux occurs.
Preferably, the positive coupler 4014 comprises a low silver layer membrane electrode 40141, a wafer 40142, a high silver layer membrane electrode 40143, a frequency divider 40144, a sliding connection plate 40145 and a cross connector 40146, wherein the upper surface of the low silver layer membrane electrode 40141 is attached to the lower surface of the wafer 40142, the high silver layer membrane electrode 40143 is welded above the wafer 40142, the upper end of the high silver layer membrane electrode 40143 is electrically connected with the lower end of the frequency divider 40144 through a lead, the sliding connection plate 40145 is nested above the frequency divider 40144, the cross connector 40146 is arranged on the left side of the wafer 40142, when the upper end and the lower end of the wafer 40142 are connected with irregular pulse voltage, an external electric field can be generated at the upper end and the lower end of the wafer 40142, the external electric field can be forced to deform, the output voltage stabilizes pulses, the frequency divider 40144 is internally surrounded by a lead with a fixed number of turns, abrupt pulses can be filtered, and the stability of the pulse voltage can be improved.
Preferably, the cross connector 40146 comprises an orthogonal transmission line 401461, an inverter 401462, and an inverted cross line 401463, wherein the right end of the orthogonal transmission line 401461 is nested in the upper left corner of the inverter 401462, the inverted cross line 401463 is disposed on the upper right corner of the inverter 401462 and electrically connected to the right corner, and a circuit board is nested inside the inverter 401462, and the circuit board is connected in a manner that the lower left end and the upper right end communicate with each other and the lower right end and the upper left end communicate with each other, so that the left end and the right end of the circuit can be reversely connected.
Preferably, the dual-phase top connector 402 is composed of a first phase interface 4021, a push snap ring block 4022, a soft rubber contactor 4023, a stable contact connector 4024, a fixed phase holder 4025, an insulating plate 4026, a tail interface 4027, a positioning bump 4028 and a top brush groove 4029, the first phase interface 4021 is nested below the fixed phase holder 4025, the push snap ring block 4022 is nested in the soft rubber contactor 4023, the stable contact connector 4024 is welded on the inner side of the soft rubber contactor 4023, the tail interface 4027 is arranged on the right side of the lower end of the fixed phase holder 4025, the tail interface 4027 is in conductive connection with the top brush groove 4029, the positioning bump 4028 is arranged above the fixed phase holder 4025 and is of an integrated structure, the top brush groove 4029 is nested above the fixed phase holder 4025, the outer surface of the insulating plate 4026 is attached to the inner side surface of the fixed phase holder 4025, the outer ring block 4022 has a torsion spring which can resist nesting in pushing, with many items of electric wire stable meshing, avoid droing, the inboard of top brush groove 4029 is the arc track of connected formula, and its self has certain elasticity, laminating that can be stable, appears the discontinuity outage phenomenon when avoiding rotating.
Preferably, the positioning clamping seat 403 is arranged on the front side and the right side of the device, and is limited by ninety degrees, and buffer springs are respectively nested in the opposite directions of the positioning clamping seat, so that the device is prevented from being damaged due to overlarge rotating impact force, and the limitation of the rotating angle of the device is facilitated.
Preferably, the phasing screw 404 has a connecting column nested at the upper end thereof, and a connecting ball disposed at the lower end thereof, and is capable of performing a separation action, thereby improving the stability of rotation and avoiding deformation due to self-generated torque during rotation.
The use principle is as follows: when irregular pulses occur to the three-phase voltage connected to the electric energy meter, the working magnetic fluxes of the multiple groups of electromagnetic units interact with each other to cause the magnetic torquer 4015 of the magnetic torque butt-joint device 401 to induce electromagnetic force, and under the action of the magnetic torquer 4015, torque is generated to rotate clockwise, so as to drive the circular motion connector 405 to rotate, under the action of the positioning clamp base 403, the circular motion connector 405 rotates ninety degrees on the inner surface of the top brush groove 4029, so that the power supplies at the two ends of the circular motion connector are connected to the cross connector 40146, at this time, the two ends of the wafer 40142 in the cross connector 40146 are connected to irregular pulse voltage, so that the upper end and the lower end of the wafer generate external electric field, so as to force the external electric field to deform the wafer, the output voltage stabilizes the pulses, after passing through the reverse connector 401462, the first power supply and the last power supply are reversely connected to the orthogonal transmission line 401461 and the reverse connection line 401463, at this time, the stability of pulse voltage is improved, the ammeter is switched on, the three-phase sequence of the ammeter is automatically switched on in a reverse direction, the torque generated by the electromagnetic unit and the inductance coil is reduced, and the voltage pulse is stabilized, so that the rotation angle of the disc of the ammeter in the no-load state is reduced, and the rotation angle of the ammeter is small enough to be ignored.
The invention has the advantages that the electric energy meter can be switched on the three-phase power supply in sequence and in reverse sequence under the action of the magnetic torque butt connector 401, irregular pulses are stabilized and converted into regular voltage pulses under the mutual matching of the normal counter connector 4014 and the staggered connector 40146 in the electric energy meter during switching, the acting force generated by the working magnetic flux between the electromagnetic units is reduced, the error of electricity charge calculation is reduced, the rotation of the electric energy meter can be stabilized under the action of the double-phase top connector 402, the loss and the jumping generated by the mutual motion friction of the electric energy meter are avoided, the contact performance is influenced, and the continuity of the electric connection is improved.
The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims appended hereto.
Claims (3)
1. The utility model provides an intelligent magnetic torque positive sequence negative sequence self-conversion device for electric energy meter, its structure includes: digital display screen (1), electric energy meter main part (2), wiring end socket (3), pulse interfacing apparatus (4), fixing bolt (5), the back of digital display screen (1) is nested on the front of electric energy meter main part (2), the lower extreme of electric energy meter main part (2) is equipped with wiring end socket (3) and connects through the electricity, pulse interfacing apparatus (4) nests in electric energy meter main part (2), fixing bolt (5) are inlayed in the upper left corner of electric energy meter main part (2), its characterized in that:
the pulse butt joint device (4) comprises a magnetic torque butt joint device (401), a double-phase top joint device (402), a positioning clamping seat (403), a phasing screw device (404), a circulating connector (405), a fixed rolling joint base (406) and a connected double-phase slip ring (407), wherein the double-phase top joint device (402) is arranged below the magnetic torque butt joint device (401), the upper surface of the double-phase top joint device (402) is attached to the circulating connector (405) and is electrically connected with the circulating connector (405), the upper end of the circulating connector (405) is nested below the magnetic torque butt joint device (401), the fixed rolling joint base (406) is arranged in the middle of the connected double-phase slip ring (407), and the magnetic torque butt joint device (401) is nested below the connected double-phase slip ring (407);
the magnetic torque butt connector (401) comprises a stable pulse linkage shell (4011), a limiting buffering block (4012), an opposite phase opposite linkage joint (4013), a positive phase opposite linkage device (4014) and a magnetic torque device (4015), wherein the limiting buffering block (4012) is arranged on the right side of the stable pulse linkage shell (4011) and is of an integrated structure, the lower surface of the opposite phase opposite linkage joint (4013) is attached to the upper surface of the stable pulse linkage shell (4011), the positive phase opposite linkage device (4014) is nested in the stable pulse linkage shell (4011), and the magnetic torque device (4015) is arranged above the stable pulse linkage shell (4011);
the biphase top connector (402) consists of a first phase interface (4021), a push snap ring block (4022), a soft rubber contactor (4023), a stable contact connector (4024), a fixed phase base (4025), an insulating plate (4026), a last phase interface (4027), a positioning lug (4028) and a top brush groove (4029), the first phase interface (4021) is nested below the fixed phase seat (4025), the push snap ring block (4022) is nested in the soft rubber contactor (4023), the inner side of the soft rubber contactor (4023) is welded with a stable contactor (4024), the right side of the lower end of the fixed phase seat (4025) is provided with a final phase interface (4027), the end phase interface (4027) is electrically connected with the top brush groove (4029), the positioning bump (4028) is arranged above the fixed phase seat (4025) and is of an integrated structure, the top brush groove (4029) is nested above the fixed phase seat (4025), and the outer surface of the insulating plate (4026) is attached to the inner side surface of the fixed phase seat (4025);
the positioning clamping seat (403) is arranged on the front side and the right side of the device and is limited by ninety degrees, and the annular moving connector (405) rotates by ninety degrees on the inner surface of the top brush groove (4029) under the action of the positioning clamping seat (403).
2. The magnetic torque positive sequence and negative sequence self-conversion device for the intelligent electric energy meter according to claim 1 is characterized in that: just relative allies oneself with ware (4014) comprises low silver layer membrane utmost point (40141), wafer (40142), high silver layer membrane utmost point (40143), frequency divider (40144), sliding connection board (40145), cross connector (40146), the upper surface of low silver layer membrane utmost point (40141) is laminated with the lower surface of wafer (40142), the top welding of wafer (40142) has high silver layer membrane utmost point (40143), the upper end of high silver layer membrane utmost point (40143) passes through the wire electricity with the lower extreme of frequency divider (40144) and is connected, sliding connection board (40145) have been nested to the top of frequency divider (40144), cross connector (40146) locates the left side of wafer (40142).
3. The magnetic torque positive sequence and negative sequence self-conversion device for the intelligent electric energy meter according to claim 2 is characterized in that: the cross connector (40146) is composed of an orthogonal transmission line (401461), an inverse connector (401462) and an inverse cross line (401463), wherein the right end of the orthogonal transmission line (401461) is nested in the upper left corner of the inverse connector (401462), and the upper right corner of the inverse connector (401462) is provided with the inverse cross line (401463) and is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432041.2A CN109557348B (en) | 2018-11-28 | 2018-11-28 | Magnetic torque positive sequence and negative sequence self-conversion device for intelligent electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432041.2A CN109557348B (en) | 2018-11-28 | 2018-11-28 | Magnetic torque positive sequence and negative sequence self-conversion device for intelligent electric energy meter |
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| Publication Number | Publication Date |
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| CN109557348A CN109557348A (en) | 2019-04-02 |
| CN109557348B true CN109557348B (en) | 2021-02-23 |
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| CN201811432041.2A Active CN109557348B (en) | 2018-11-28 | 2018-11-28 | Magnetic torque positive sequence and negative sequence self-conversion device for intelligent electric energy meter |
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| CN2907025Y (en) * | 2006-05-24 | 2007-05-30 | 珠海科达信电子科技有限公司 | Three-phase power voltage regulator with automatic phase sequence switchover function |
| CN202362340U (en) * | 2011-11-14 | 2012-08-01 | 宁波三星电气股份有限公司 | Electric energy meter control circuit |
| CN103997018A (en) * | 2014-05-09 | 2014-08-20 | 湖北慧中电子科技有限公司 | Automatic power supply phase sequence correction device |
| CN107918038A (en) * | 2017-05-12 | 2018-04-17 | 国网浙江省电力公司湖州供电公司 | Switching regulator phase sequence switches combined connection box |
| CN207753453U (en) * | 2018-01-31 | 2018-08-21 | 长江南京航道局芜湖航道管理处 | A kind of ship connects electric phase sequence automatic conversion and open phase protection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6612934B2 (en) * | 1999-11-09 | 2003-09-02 | Richard E. Foster, Sr. | Reaction control device |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2907025Y (en) * | 2006-05-24 | 2007-05-30 | 珠海科达信电子科技有限公司 | Three-phase power voltage regulator with automatic phase sequence switchover function |
| CN202362340U (en) * | 2011-11-14 | 2012-08-01 | 宁波三星电气股份有限公司 | Electric energy meter control circuit |
| CN103997018A (en) * | 2014-05-09 | 2014-08-20 | 湖北慧中电子科技有限公司 | Automatic power supply phase sequence correction device |
| CN107918038A (en) * | 2017-05-12 | 2018-04-17 | 国网浙江省电力公司湖州供电公司 | Switching regulator phase sequence switches combined connection box |
| CN207753453U (en) * | 2018-01-31 | 2018-08-21 | 长江南京航道局芜湖航道管理处 | A kind of ship connects electric phase sequence automatic conversion and open phase protection |
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| CN109557348A (en) | 2019-04-02 |
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Inventor after: Li Ke Inventor after: Qiu Yajun Inventor before: Qiu Yajun |
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Effective date of registration: 20210202 Address after: 150070 No.21 Edmonton Road, Daoli District, Harbin City, Heilongjiang Province Applicant after: HARBIN HUIXIN INSTRUMENT Co.,Ltd. Address before: No.1, 5th floor, unit 3, No.19, Yonghe street, Nangang District, Harbin City, Heilongjiang Province Applicant before: Li Ke |
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