CN119355324A - A three-phase intelligent electric energy meter - Google Patents
A three-phase intelligent electric energy meter Download PDFInfo
- Publication number
- CN119355324A CN119355324A CN202411417284.4A CN202411417284A CN119355324A CN 119355324 A CN119355324 A CN 119355324A CN 202411417284 A CN202411417284 A CN 202411417284A CN 119355324 A CN119355324 A CN 119355324A
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- 239000004020 conductor Substances 0.000 claims abstract 2
- 230000000670 limiting effect Effects 0.000 claims description 68
- 238000003825 pressing Methods 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000005484 gravity Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000005381 potential energy Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention relates to the technical field of electric energy meters, in particular to a three-phase intelligent electric energy meter which comprises an electric energy meter body and an insulating cover, wherein a wiring area is formed at the lower side of the front end of the electric energy meter body, the insulating cover is detachably arranged at the front end of the wiring area, a third sleeve is arranged in the wiring area and is made of conductive materials, a connector lug is arranged at the lower end of the third sleeve, and the connector lug is electrically connected with a circuit system in the electric energy meter body.
Description
Technical Field
The invention relates to the technical field of electric energy meters, in particular to a three-phase intelligent electric energy meter.
Background
The three-phase intelligent electric energy meter is widely applied to the fields of industry and commerce, such as industrial plants, workshops, shopping centers, office buildings and the like, is used as equipment for measuring and recording the electric energy use condition in a three-phase electric power system, at present, a bolt fixing structure is widely used for connecting the intelligent electric energy meter with a power grid, the bolt fixing structure can provide reliable contact points so as to reduce the risk of poor contact, meanwhile, the bolt fixing structure can resist the tensile force of a wire harness and prevent the wire harness at a wiring position from falling off when the wire harness is pulled, however, in a high-load three-phase power grid, heat generated by current during operation easily causes thermal expansion at a bolt joint, after the three-phase electric power system is started and stopped for a plurality of times, bolts are switched in two states of thermal expansion and cold contraction, loosening of the bolts is easy to cause poor contact at the wiring position so as to influence the safety of the three-phase electric energy meter, and the bolt fixing structure provides sufficient wiring space and is easy to be stolen by illegal molecules.
Aiming at the problems, the prior art provides solutions, for example, a wiring structure is arranged as a plug-in structure, the plug-in structure is easy to operate, time and labor are saved, meanwhile, the plug-in structure can effectively inhibit the electricity stealing behavior of lawless persons, but the plug-in structure is easy to wear out a plug-in interface after being plugged in and out for a long time, poor contact is easy to form, and meanwhile, the plug-in structure has stronger tightness than that of bolt connection, is not beneficial to heat emission at a connecting position, and is easy to cause overhigh temperature at the connecting position and fire disaster. For example, the electric wire is welded with the electric energy meter through the welding structure, the removing resistance of the welding structure is low, the connection is firm, the stable connection between the electric wire and the electric energy meter can be ensured, but the welding structure is in irreversible connection, the electric energy meter is difficult to replace and maintain after welding, and the inside of the electric energy meter is easy to overheat damage in the welding process.
Disclosure of Invention
The invention aims to provide a three-phase intelligent electric energy meter, which is used for solving the problem that the accuracy of a measurement result of the three-phase intelligent electric energy meter is reduced due to poor contact in the connecting structure of the existing three-phase intelligent electric energy meter, and solving the problems in the existing solution.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a three-phase intelligent electric energy meter, includes electric energy meter body and insulating cover, the wiring district has been seted up to the front end downside of electric energy meter body, the insulating cover demountable installation is in wiring district front end, specifically, be equipped with No. three sleeve pipes in the wiring district, no. three sleeve pipes are connected with the electric energy meter body, no. three sheathed tube lower extreme is equipped with the connector lug, connector lug and the circuit electrical connection in the electric energy meter body, no. three sheathed tube upper end ring array is provided with a plurality of contacts, the contact includes elastic segment, arc section and contact terminal, the elastic segment extends No. three sheathed tube upside, the arc section is located the upper end of elastic segment, the arc section is crooked towards No. three sheathed tube inboard, the inboard of arc section is the contact terminal, no. three intraductal coaxial sliding connection has No. two sheathed tube, no. two sheathed tube lateral wall upper ring array has seted up the multichannel spacing hole, the spacing hole is waist hole, the arc section passes spacing hole and extends to No. two intraductal, no. two sheathed tube upside is equipped with No. two sheathed tube drive assembly downward movements.
When the electric wire is connected, the electric wire is inserted into the third sleeve and the driving assembly is started, when the second sleeve moves downwards, the upper side inner wall of the limiting hole is attached to the upper end face of the arc section firstly, the limiting hole and the arc section slide along with the downward continuing of the second sleeve, the extrusion of the inner wall of the limiting hole of the arc section moves towards the inner side of the second sleeve, the elastic section deforms elastically, the inner diameter of the contact end becomes smaller until the contact end is attached to the outer wall of the electric wire, at the moment, the electric wire is in a communicating state with a circuit system in the electric energy meter, the driving assembly continues to drive the elastic section to bend inwards, the pressure applied to the electric wire by the contact end is increased, the contact end is further fastened to restrict the electric wire, the driving assembly is locked after fastening is completed, so that the connection between the contact end and the electric wire is kept, and the elastic potential energy exists in the elastic section, when the current in the three-phase power grid changes, the elastic potential energy of the elastic section compensates for the thermal expansion deformation caused by heating and the cold shrinkage deformation caused by cooling, so that the stability and stability of the contact end and the electric wire are ensured. Moreover, because the internal diameter of the third sleeve is a fixed value, the diameter of the electric wire inserted into the third sleeve is limited, namely, the electric wire matched with the internal diameter of the third sleeve can be inserted, and additional electric wires can not be additionally arranged, so that illegal molecules are prevented from inserting additional electric wires into the third sleeve to conduct electricity stealing behavior, and the anti-theft performance of the three-phase intelligent electric energy meter is improved.
Preferably, the drive assembly includes a sleeve pipe, pivot and compression spring, no. two sleeve pipes, no. three sleeve pipes, pivot and compression spring are all coaxial to be located a sleeve pipe, no. three sleeve pipe fixed connection is in the inboard lower extreme of a sleeve pipe, the middle part circumference array of No. one sleeve pipe inner wall is provided with multichannel spacing platform, multichannel all be equipped with the spout between the spacing platform, the direction of guidance of spout is vertical decurrent, the upper end of spacing platform is equipped with a guide face and No. two guide faces, a guide face and No. two guide faces are the inclined plane, and all incline to the spout of one side, be equipped with vertical decurrent spacing between a guide face and the No. two guide faces, no. two sleeve pipes sliding connection is in No. three sleeve pipes, annular array has been seted up multichannel spacing hole on No. two sleeve pipe's the lateral wall, the spacing hole is waist type hole, the arc section passes spacing hole and extends to No. two intraductal, no. two sleeve pipe's upper end lateral wall annular array has spacing arch, spacing arch sliding connection respectively in No. two guide faces and No. two guide faces are the inclined plane, no. three guide faces are the top cap face is equipped with the top cap face and the top cap is the top cap face down, the top cap is equipped with the top cap face down, the top cap is connected down.
When the lower end face of the sliding protrusion is attached to the first guide surface, the pressure spring is in a compressed state, the upper end face of the rotating shaft is acted by the elastic force of the pressure spring, the rotating shaft moves downwards under the elastic force of the pressure spring, the sliding protrusion slides relatively with the first guide surface until the sliding protrusion slides to the lowest point of the first guide surface, the side face of the sliding protrusion is attached to the limiting surface, the sliding protrusion cannot continue downwards due to the limiting effect of the limiting surface, at this time, the second sleeve is in a state of being attached to the upper end face of the arc-shaped section on the upper side inner wall of the limiting hole under the action of gravity, and the elastic force of the pressure spring does not act on the second sleeve.
When the electric wire is inserted into the third sleeve, the upper end face of the wire skin at the outer side of the electric wire is abutted against the lower end face of the second sleeve, the wire skin pushes the second sleeve to move upwards, the limiting projection slides in the chute, the upper side inner wall of the limiting hole is separated from the upper end face of the arc-shaped section, the third guide surface is abutted against the lower end face of the sliding projection continuously moves upwards along with the second sleeve, the upward moving wire skin drives the rotating shaft to move upwards through the second sleeve, the pressure spring is compressed in the process, the elastic potential energy of the pressure spring is increased until the side face of the sliding projection is completely separated from the limiting surface, the lateral limitation of the sliding projection is relieved, the rotating shaft moves downwards under the pressure action of the pressure spring, the sliding projection slides relatively with the third guide surface, the rotating shaft rotates until the sliding projection moves downwards to the lowest point of the third guide surface, the sliding projection moves upwards along with the guiding surface, the upward side of the third guide surface moves upwards along with the sliding guide surface, the upward sliding projection moves downwards along with the sliding guide surface, the sliding projection moves downwards along with the sliding guide surface, the sliding projection moves downwards along with the sliding projection, and releases the sliding projection, the sliding projection moves downwards along with the sliding guide surface, and releases the sliding projection moves downwards along with the sliding projection, and releases the sliding projection, the sliding protrusion slides to the bottom of the sliding groove under the action of the elastic force of the pressure spring, when the sliding protrusion slides downwards, the lower end face of the sliding protrusion is abutted to the third guide surface, the limiting protrusion slides downwards in the sliding groove along with the fact that the pressure spring continues to push down the rotating shaft, the second sleeve moves downwards along with the rotating shaft, the limiting hole and the arc-shaped section slide, the inner wall of the limiting hole of the arc-shaped section moves inwards of the second sleeve in a pressing mode, the elastic section elastically deforms, the inner diameter of the contact end is reduced until the contact end is attached to the outer wall of the electric wire, at the moment, the electric wire is in a communicating state with a circuit system in the electric energy meter, the driving assembly continues to drive the elastic section to bend inwards, the pressure applied to the electric wire by the contact end is increased, and further fastening of the contact end to the electric wire is completed, and therefore connection of the electric wire and the electric energy meter body is completed.
When the wire is removed, the wire skin is pushed upwards, the wire skin pushes the second sleeve to move upwards, the limiting bulge slides in the sliding groove, the pressure of the limiting hole to the arc section is gradually reduced, the elastic section is gradually reset under the action of self elastic force, the pressure between the contact end and the electric wire is gradually reduced until the upper inner wall of the limiting hole is separated from the upper end face of the arc section after the second sleeve moves upwards to a certain height, the pressure applied by the limiting hole on the arc section is zero, in the process, the third guide surface is in an abutting state with the lower end face of the sliding bulge, the rotating shaft moves upwards in the sliding groove along with the second sleeve, the sliding bulge moves upwards in the sliding groove, the pressure spring is gradually compressed until the sliding bulge completely slides out of the sliding groove, the rotating shaft moves downwards under the elastic force action of the pressure spring, the sliding bulge moves downwards and slides relatively with the third guide surface until the lower end face of the sliding bulge slides to the lowest point of the third guide surface, the pressure applied by the limiting hole is applied by the rotating shaft, the rotating downwards along with the sliding bulge, the sliding bulge moves downwards along with the sliding bulge until the pressure spring stops moving downwards, the sliding bulge moves relatively to the sliding bulge, and the sliding bulge moves downwards along with the sliding bulge, and moves downwards along with the sliding bulge until the sliding bulge moves downwards along with the sliding bulge, and stops, and moves downwards along with the sliding bulge, at this time, the second sleeve is in a state that the upper inner wall of the limiting hole is attached to the upper end face of the arc-shaped section under the action of gravity, and the electric wire is drawn out from the third sleeve, so that the electric wire and the electric energy meter body are released.
Meanwhile, the driving mode depends on the elasticity of the pressure spring as a pressure source between the electric wire and the contact, and the contact is provided with an elastic section, and the pressure spring and the elastic section can absorb part of vibration energy in the environment, so that the influence of vibration on the connection between the contact end and the electric wire is reduced, the stable contact between the contact end and the electric wire is ensured, and the reliability and stability of the wiring position of the three-phase intelligent electric energy meter are ensured.
Preferably, the limiting hole comprises a limiting section and a guiding section, the width of the limiting section is the same as that of the elastic section, the guiding section is positioned at the upper end of the limiting section, the guiding section is obliquely upwards arranged, and the inner end of the guiding section is higher than the outer end.
Because the arc section is bent towards the inner side of the third sleeve, the height of the arc section, which is closer to the contact end, is higher, if the limiting hole is a waist-shaped hole, when the second sleeve moves downwards, the limiting hole is preferentially contacted with one side of the arc section, which is closer to the contact end, and the arc section and the limiting hole slide along with the continued downwards of the second sleeve, the arc section is extruded to move towards the inner side of the second sleeve by the limiting hole, and the horizontal thrust applied to the arc section by the second sleeve is gradually increased, so that the stroke of the second sleeve needs to be increased to meet the requirement of locking the electric wire by the thrust applied to the arc section by the final second sleeve, the vertical installation space requirement is high, and the effective length requirement of the pressure spring is high; therefore, when the second sleeve moves downwards, the outer end of the second sleeve is preferentially abutted against the upper end face of the arc section, the contact position is far away from the contact end from the first contact position of the arc section when the limiting hole is a waist-shaped hole, and the horizontal thrust applied to the arc section by the second sleeve is larger than the horizontal thrust applied to the arc section when the limiting hole is a waist-shaped hole.
Preferably, the annular array has seted up the multichannel on the sheathed tube lateral wall, and the multichannel dodge the hole is waist type hole, and the multichannel the elastic segment all extends to dodge downthehole, adjacent the louvre has been seted up between the spacing hole, adjacent dodge and has been seted up the ventilation hole between the hole, dodge the hole and the ventilation hole runs through No. two sleeve pipe inboards and No. one sleeve pipe outsides completely.
When the electric energy meter body works, because current exists between the electric wire and the contact, high temperature is easy to generate in the third sleeve under long-time operation, and the contact end is prevented from being damaged or fire is prevented from being caused by the fact that the temperature generated between the third sleeve and the electric wire is too high; the contact on the third sleeve is outwards bent, the avoidance hole can provide a movable space for the contact, the installation of the third sleeve and the second sleeve is facilitated, and on the other hand, when the temperature between the contact and the electric wire is generated due to current, the temperature on the contact can be discharged out of the first sleeve through the heat dissipation hole and the vent hole, the contact can be prevented from being irreversibly deformed due to overlarge temperature, the elasticity of the elastic section is ensured, and the stable contact between the contact and the electric wire is ensured.
Preferably, the annular array has seted up the mounting hole on the lateral wall of sleeve pipe No. one, and is a plurality of the center pin of mounting hole is all perpendicular with sleeve pipe No. one's center pin, and is a plurality of install Kong Najun install the magnetic path, no. two sheathed tube upside is by the magnetism material of inhaling.
When the stitch is removed, the sliding bulge slides to the lowest point of the first guide surface, the side surface of the sliding bulge is attached to the limiting surface, the sliding bulge cannot continuously move downwards under the limiting action of the limiting surface and the first guide surface, the upper inner wall of the limiting hole is attached to the upper end surface of the arc section under the action of gravity, the gravity of the second sleeve acts on the arc section, a horizontal component force under the gravity of the second sleeve exists on the arc section, the contact has a clamping force on the electric wire, and the electric wire is not easy to withdraw from the third sleeve, and therefore, when the sliding bulge cannot continuously move downwards under the limiting action of the limiting surface and the first guide surface due to the limiting action of the first sleeve, the second sleeve cannot continuously move downwards under the action of magnetic attraction, and the second sleeve is prevented from falling to the limiting hole to be abutted with the arc section under the action of gravity, so that the electric wire is easy to withdraw from the third sleeve.
Preferably, the lower extreme of No. three sheathed tube is equipped with the clamping ring, the clamping ring includes linkage segment and deformation section, the linkage segment is annular, and with No. three sheathed tube fixed connection, deformation section is located the linkage segment inboard, just deformation section comprises multichannel annular setting's shell fragment, deformation section is the bellied frustum shape that makes progress, multichannel the upper end of shell fragment is equipped with the guide boss, the guide boss extends to the upside of deformation section, and multichannel the guide boss all is located between No. two sheathed tube inboardly and No. three sheathed tube inboards.
During wiring, the second sleeve moves downwards under the action of the spring force of the pressure spring, the inner diameter of the contact end is reduced, pressure is applied to the electric wire and the electric wire is clamped and restrained by the second sleeve, the inner diameter of the contact end is reduced, connection between a contact and the electric wire can be realized, but the friction force between the contact end and the electric wire is limited, when the electric wire is subjected to vertical downward pulling force, sliding friction is easily caused between the contact end and the electric wire, even the electric wire and the contact end are separated, and therefore, by arranging a compression ring at the lower end of the third sleeve, when the second sleeve moves upwards under the elastic force of the pressure spring, the lower end of the second sleeve is abutted against the upper end face of a pilot boss, the second sleeve continues to move downwards, the second sleeve pushes the elastic sheet downwards through the pilot boss, the inner diameters of the elastic sheet are reduced, the inner ends of the elastic sheet are attached to the outer wall of a wire skin comprising the outer side of the electric wire, the wire skin is made of elastic materials, the inner end of the elastic sheet is attached to the inner end of the second sleeve, the inner end of the elastic sheet continues to move downwards, and the inner end of the elastic sheet is attached to the wire skin is pulled downwards, and the elastic sheet is prevented from being contacted with the wire, and the elastic sheet is further attached to the elastic sheet, and the elastic sheet is prevented from being bent downwards, and the elastic sheet is more than the elastic sheet is attached to the inner elastic sheet, and the elastic sheet is bent downwards, and the elastic sheet is more than the elastic sheet is bent downwards, and the elastic sheet is further is bent, and is contacted with the elastic sheet.
Preferably, the minimum diameter of the contact end is D1, the diameter of the wire is D2, d1=d2- (0.2-1.0) mm, and a chamfer is arranged on the inner side of the lower end of the contact end.
When the wire is connected, the wire is pushed upwards to the lower end of the sliding protrusion to be displaced to the upper side of the second guide surface, the upward pushing force acting on the wire skin is removed, at the moment, no clamping force exists between the contact and the wire, the wire is easy to move downwards under the action of gravity and slide out of the third sleeve, if a maintainer holds the wire and waits for the pressure spring to push the rotating shaft and the second sleeve downwards, waiting time of the maintainer is needed, and for this reason, by setting the minimum diameter D1 of the contact end and the diameter D2 of the wire to be D1=D2- (0.2-1.0) mm, when the maintainer inserts the wire into the third sleeve, the clamping force and the friction force exist between the wire and the contact, so that the wire slides out of the third sleeve under the action of gravity when the maintainer finishes the upward pushing force acting on the wire, the contact and the maintainer is convenient to construct, and meanwhile, even if the contact is not acted by the extrusion force of the second sleeve, the contact end and the wire are still in a contact state, the contact end and the wire is ensured to be in stable contact, and the reliability and stability of the connection position are ensured.
Preferably, the first sleeve, the second sleeve and the pressure ring are made of any one of insulating flame-retardant materials including PVC, PI, PC, PET or PPS, so that the safety of the three-phase intelligent electric energy meter is further ensured.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the third sleeve, the second sleeve and the driving assembly are arranged, and meanwhile, the contact with the elastic section is arranged on the third sleeve, and the second sleeve extrudes the contact to clamp the electric wire when moving downwards under the driving action of the driving assembly, so that the communication between the electric wire and the electric energy meter body is realized, the wiring process is simplified, meanwhile, the elastic potential energy of the elastic section compensates for thermal expansion deformation caused by heating and cold contraction deformation caused by cooling, so that the stable contact between the contact and the electric wire is ensured, and the reliability and stability of the wiring position are ensured.
2. According to the invention, the vent hole and the avoidance hole are formed in the first sleeve, the heat dissipation hole is formed in the second sleeve, and the temperature on the contact can be discharged out of the first sleeve through the heat dissipation hole and the vent hole, and can be discharged out of the first sleeve through the avoidance hole, so that the risk of damage and fire disaster of the contact end caused by overhigh temperature of the contact end and the wire is reduced, irreversible deformation caused by overhigh temperature of the contact is avoided, the elasticity of the elastic section is ensured, the stable contact between the contact end and the wire is ensured, and the safety and stability of the wiring position are ensured.
3. According to the invention, the pressing ring is arranged at the lower end of the third sleeve, when the second sleeve moves upwards under the action of the elastic force of the pressure spring, the second sleeve pushes the elastic sheet to bend downwards through the pilot boss, the inner diameters of the inner ends of the elastic sheets become smaller and are embedded into the wire skin, when the wire skin and the electric wire are subjected to vertical downward pulling force, the elastic sheet continues to bend downwards, the smaller the inner diameters of the elastic sheets are, the larger the extrusion force of the elastic sheet to the wire skin is, so that the vertical pulling force of the wire skin is stronger, the electric wire is prevented from being separated from the contact end when the wire skin and the electric wire are subjected to vertical downward pulling force, the stable contact between the contact end and the electric wire is ensured, and the reliability and stability of the wiring position are ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a three-phase intelligent electric energy meter according to the present invention;
FIG. 2 is an exploded view of the three-phase smart power meter of the present invention;
FIG. 3 is an exploded view of the wiring structure of the three-phase intelligent ammeter of the present invention;
FIG. 4 is a cross-sectional view of a first sleeve in a three-phase intelligent ammeter according to the present invention;
FIG. 5 is a schematic diagram of the overall structure of the wiring structure of the three-phase intelligent ammeter of the present invention;
FIG. 6 is a cross-sectional view taken at A-A in FIG. 5;
FIG. 7 is a state diagram showing the sliding protrusion completely separated from the limiting surface during wiring;
Fig. 8 is a state diagram of the electric wire when the electric wire is connected with the electric energy meter body.
In the figure, 1, an electric energy meter body, 101, a wiring area, 2, an insulating cover, 3, a first sleeve, 301, a limiting table, 3011, a first guide surface, 3012, a second guide surface, 3013, a limiting surface, 302, a sliding groove, 303, an avoidance hole, 304, a vent hole, 305, a mounting hole, 4, a second sleeve, 401, a limiting protrusion, 402, a third guide surface, 403, a limiting hole, 4031, a limiting section, 4032, a guide section, 404, a heat dissipation hole, 5, a third sleeve, 501, a contact, 5011, an elastic section, 5012, an arc section, 5013, a contact end, 502, a wiring head, 6, a rotating shaft, 601, a sliding protrusion, 7, a pressing ring, 701, a connecting section, 702, an elastic sheet, 7021, a guide boss, 8, a pressure spring, 9, a top cover, 10, a magnetic block, 11, an electric wire, 12 and a wire sheath.
Detailed Description
Referring to fig. 1 to 8, the present invention provides a three-phase intelligent electric energy meter, which has the following technical scheme:
Referring to fig. 1 to 3, fig. 5 and fig. 6, a three-phase intelligent electric energy meter comprises an electric energy meter body 1 and an insulating cover 2, a wiring area 101 is formed at the lower side of the front end of the electric energy meter body 1, the insulating cover 2 is detachably mounted at the front end of the wiring area 101, a third sleeve 5 is arranged in the wiring area 101, the third sleeve 5 is made of a material of C7025, a connector lug 502 is arranged at the lower end of the third sleeve 5, the connector lug 502 is electrically connected with a circuit system in the electric energy meter body 1, 5 contacts 501 are arranged on an upper annular array of the third sleeve 5, the contacts 501 comprise elastic sections 5011, arc sections 5012 and contact ends 5013, the elastic sections 5011 extend out of the upper sides of the third sleeve 5, the arc sections 5012 are located at the upper ends of the elastic sections 5011, the arc sections 5012 are bent towards the inner sides of the third sleeve 5, the inner sides of the arc sections 5013 are connected with second sleeve 4 in a coaxial sliding mode, limit holes 403 are formed in the side walls of the second sleeve 4 in an annular array, the limit holes 403 are waist-shaped holes 5012, and the limit holes 5012 extend through the second sleeve 4 to the second sleeve 4, and a plurality of driving components extend downwards to the second sleeve 4.
Specifically, referring to fig. 3 and 4, the driving assembly includes a first sleeve 3, a rotating shaft 6 and a pressure spring 8, a second sleeve 4, a third sleeve 5, the rotating shaft 6 and the pressure spring 8 are all coaxially disposed in the first sleeve 3, the third sleeve 5 is fixedly connected to the lower end of the inner side of the first sleeve 3, a plurality of limiting platforms 301 are disposed in a circumferential array in the middle of the inner wall of the first sleeve 3, sliding grooves 302 are disposed between the plurality of limiting platforms 301, the guiding direction of the sliding grooves 302 is vertically downward, a first guiding surface 3011 and a second guiding surface 3012 are disposed at the upper end of the limiting platform 301, the first guiding surface 3011 and the second guiding surface 3012 are inclined surfaces, and are inclined to the sliding grooves 302 on one side, a vertically downward limiting surface 3013 is disposed between the first guiding surface 3011 and the second guiding surface 3012, the second sleeve 4 is slidably connected to the third sleeve 5, a 5-way limiting hole 403 is disposed in an annular array on the side wall of the second sleeve 4, the limiting hole 403 is a waist-shaped hole, the limiting hole 403 includes a limiting section 4031 and a guiding section 4032, the width of the limiting section 4031 is the same as that of the inner end of the elastic section 4031 is disposed at the two sides of the guiding section 4032, and the inner end of the guiding section is disposed at the same side as the upper end of the guiding section 4032, and the upper end of the guiding section is disposed at the upper end of the 4032 is completely inclined, and the adjacent heat dissipating section is located at the inner end of the end 4032, and the inner end is located at the end of the end 40 is located at the upper end, and the end is located at the lower end of the end 40 is opposite side; the outer side wall of the first sleeve 3 is provided with 5 avoidance holes 303 in an annular array, the five avoidance holes 303 are waist-shaped holes, the five elastic sections 5011 extend into the avoidance holes 303, vent holes 304 are arranged between the adjacent avoidance holes 303, the avoidance holes 303 and the vent holes 304 completely penetrate through the inner side and the outer side of the first sleeve 3, the arc section 5012 penetrates through the limit holes 403 and extends into the second sleeve 4, the outer side wall of the upper end of the second sleeve 4 is provided with 5 limit protrusions 401 in an annular array, five spacing protruding 401 sliding connection respectively in five spouts 302, the up end of No. two sleeve pipes 4 is the profile of tooth, the profile of tooth face is No. three guide surface 402, pivot 6 sliding connection is in spacing 301 upside, the lower extreme annular array of pivot 6 is equipped with 5 and slides protruding 601, the lower terminal surface of sliding protruding 601 is the inclined plane, the upper end of No. one sleeve pipe 3 is equipped with top cap 9, top cap 9 and the body fixed connection of electric energy meter, the upper and lower both ends of compression spring 8 are connected in the up end of pivot 6 and the lower terminal surface of top cap 9 respectively, the lower extreme of No. three sleeve pipe 5 is equipped with clamping ring 7, clamping ring 7 includes link 701 and deformation section, the link 701 is annular, and with No. three sleeve pipe 5 fixed connection, the deformation section is located the link 701 inboard, and the deformation section comprises the elastic sheet 702 of multichannel annular setting, the deformation section is upwards bellied frustum shape, the upper end of multichannel elastic sheet 702 is equipped with guide boss 7021, guide boss 7021 extends to the upside of deformation section, and multichannel boss 7021 all is located between No. 4 inboard and No. three sleeve pipe 5 inboard.
Further, referring to fig. 3, 5 and 6, 5 mounting holes 305 are formed in an annular array on the outer side wall of the first sleeve 3, central axes of the five mounting holes 305 are perpendicular to the central axis of the first sleeve 3, magnetic blocks 10 are mounted in the five mounting holes 305, and the upper side of the second sleeve 4 is made of a magnetic material.
It should be noted that, in this embodiment, the three-phase intelligent electric energy meter is used in a medium-load three-phase circuit, the electric wire 11 is made of a copper wire with a diameter of 16mm 2, the minimum diameter of the contact end 5013 is 4mm, and the first sleeve 3, the second sleeve 4 and the pressing ring 7 are made of PVC materials.
Referring to fig. 1 to 6, when the lower end surface of the sliding protrusion 601 is attached to the first guide surface 3011, the pressure spring 8 is in a compressed state, the upper end surface of the rotating shaft 6 is under the action of the elastic force of the pressure spring 8, the rotating shaft 6 moves downward under the action of the elastic force of the pressure spring 8, and as the sliding protrusion 601 slides relatively between the lower end surface of the sliding protrusion 601 and the first guide surface 3011 until the sliding protrusion 601 slides to the lowest point of the first guide surface 3011, the side surface of the sliding protrusion 601 is attached to the limiting surface 3013, the sliding protrusion 601 is limited by the limiting surface 3013 and cannot continue to move downward, at this time, the second sleeve 4 is under the action of gravity and is in a state in which the upper inner wall of the limiting hole 403 is attached to the upper end surface of the arc-shaped section 5012, and the elastic force of the pressure spring 8 does not act on the second sleeve 4.
Referring to fig. 6 to 8, during wire connection, the wire 11 is inserted into the third sleeve 5, when the wire 11 is inserted into the sleeve, the upper end face of the wire 12 on the outer side of the wire 11 abuts against the lower end face of the second sleeve 4, the wire 12 continues to push the wire 12 upwards, the second sleeve 4 moves upwards, the limit protrusion 401 slides in the chute 302, the upper inner wall of the limit hole 403 is separated from the upper end face of the arc-shaped section 5012, as the second sleeve 4 continues to move upwards, the third guide face 402 abuts against the lower end face of the slide protrusion 601, the wire 12 moving upwards drives the rotating shaft 6 to move upwards through the second sleeve 4, the pressure spring 8 is compressed, the elastic potential energy of the pressure spring 8 is increased until the side face of the slide protrusion 601 is completely separated from the limit face 3013, the lateral limit of the slide protrusion 601 is released, the rotating shaft 6 moves downwards under the pressure action of the pressure spring 8, the slide protrusion 601 slides relatively with the third guide face 402, the rotating shaft 6 moves downwards until the slide protrusion 601 reaches the lowest point of the third guide face 402, and the slide protrusion 601 moves upwards under the action of the third guide face 3012; at this time, in the process of withdrawing the upward thrust force acting on the wire 12 and sliding the sliding protrusion 601 downward in the chute 302, the second sleeve 4 is in a state that the upper inner wall of the limit hole 403 is attached to the upper end face of the arc segment 5012 under the action of gravity, the elastic force of the pressure spring 8 is released, the rotating shaft 6 moves downward under the action of the elastic force of the pressure spring 8, the lower end face of the sliding protrusion 601 abuts against the second guide face 3012, the lower end face of the sliding protrusion 601 slides relatively with the second guide face 3012 along with the continued downward movement of the rotating shaft 6, the rotating shaft 6 rotates, the sliding protrusion 601 moves to the inside of the sliding groove 302 under the guiding action of the second guiding surface 3012, the sliding protrusion 601 slides to the bottom of the sliding groove 302 under the elastic action of the pressure spring 8, when the sliding protrusion 601 slides downwards, the lower end surface of the sliding protrusion 601 is abutted to the third guiding surface 402, as the pressure spring 8 continues to push the rotating shaft 6 downwards, the limiting protrusion 401 slides downwards in the sliding groove 302, the second sleeve 4 moves downwards along with the rotating shaft 6, the limiting hole 403 and the arc-shaped section 5012 slide, the arc-shaped section 5012 is extruded by the inner wall of the limiting hole 403 to move inwards of the second sleeve 4, the elastic section 5011 deforms elastically, the inner diameter of the contact end 5013 becomes smaller until the contact end 5013 is attached to the outer wall of the electric wire 11, at this time, the electric wire 11 is in a communicating state with a circuit system in the electric energy meter, the driving assembly continues to drive the elastic section 5011 inwards, the pressure applied to the electric wire 11 by the contact end 5013 increases, and further tightens the constraint of the contact end 5013 on the electric wire 11.
When the second sleeve 4 moves upwards under the action of the elastic force of the pressure spring 8, the lower end of the second sleeve 4 is abutted against the upper end face of the pilot boss 7021, the second sleeve 4 continues to move downwards, the second sleeve 4 pushes the elastic sheet 702 to bend downwards through the pilot boss 7021, the inner diameters of the elastic sheets 702 become smaller, the inner ends of the elastic sheets 702 are firstly attached to the outer wall of the wire skin 12 which is arranged on the outer side of the electric wire 11, the wire skin 12 is made of elastic materials, the inner ends of the elastic sheets 702 are extruded by the wire skin 12 and are embedded into the wire skin 12 along with the continuing downwards movement of the second sleeve 4, after the contact end 5013 completes constraint on the electric wire 11, maintenance personnel pulls the wire skin 12 again, the elastic sheets 702 continue to bend downwards when the wire skin 12 and the electric wire 11 are subjected to vertical downwards pulling force, the inner diameters of the elastic sheets 702 are smaller, the extrusion force of the elastic sheets 702 is larger, and the vertical pulling force of the wire skin 12 is stronger, therefore, the connection of the electric wire 11 and the electric energy meter body 1 is completed.
When the stitch is removed, the stitch skin 12 is pushed upwards, the stitch skin 12 pushes the second sleeve 4 to move upwards, the limiting protrusion 401 slides in the sliding groove 302, the pressure of the limiting hole 403 to the arc-shaped section 5012 is gradually reduced, the elastic section 5011 is gradually reset under the action of self elastic force, the pressure between the contact end 5013 and the electric wire 11 is gradually reduced until the second sleeve 4 moves upwards to a certain height, the upper inner wall of the limiting hole 403 is separated from the upper end surface of the arc-shaped section 5012, and the pressure exerted on the arc-shaped section 5012 by the limiting hole 403 is zero; in the process, the third guide surface 402 is in an abutting state with the lower end surface of the sliding projection 601, the rotating shaft 6 moves upwards along with the second sleeve 4, the sliding projection 601 moves upwards in the sliding groove 302, the pressure spring 8 is gradually compressed until the sliding projection 601 slides out of the sliding groove 302, the rotating shaft 6 moves downwards under the action of the elastic force of the pressure spring 8, the sliding projection 601 moves downwards and slides relatively with the third guide surface 402, the rotating shaft 6 rotates until the lower end surface of the sliding projection 601 slides to the lowest point of the third guide surface 402, the rotating shaft 6 stops moving downwards and rotating, the lower end surface of the sliding projection 601 rotates to the upper side of the first guide surface 3011, at this time, the upward thrust acting on the wire 12 is cancelled, when the lower end surface of the sliding projection 601 is attached to the first guide surface 3011, the pressure spring 8 is in a compressed state, the upper end surface of the rotating shaft 6 moves downwards under the action of the elastic force of the pressure spring 8, the rotating shaft 6 slides relatively with the lower end surface of the sliding projection 601 and the first guide surface 3011 until the sliding projection 601 slides to the lowest point of the first guide surface 3013, the sliding projection 601 can not continue to be attached to the side of the first guide surface 3013, at this time, the second sleeve 4 cannot continue to move downward under the magnetic attraction of the magnetic block 10, and the electric wire 11 is drawn out from the third sleeve 5, so that the release of the electric wire 11 from the electric energy meter body 1 is completed.
The above description of a specific embodiment of the present invention is given with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiment. It will be apparent to those skilled in the art that many changes, modifications, substitutions and variations can be made to these embodiments without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a three-phase intelligent ammeter, includes electric energy meter body (1) and insulating cap (2), wiring district (101) have been seted up to the front end downside of electric energy meter body (1), insulating cap (2) demountable installation in wiring district (101) front end, a serial communication port, be equipped with No. three sleeve pipe (5) in wiring district (101), no. three sleeve pipe (5) are made by electrically conductive material, no. three sleeve pipe (5) lower extreme is equipped with connector lug (502), circuit system electric connection in connector lug (502) and electric energy meter body (1), no. three sleeve pipe (5) upper end ring array is provided with a plurality of contacts (501), contact (501) are including elastic segment (5011), arc segment (5012) and contact terminal (5013), the upside that elastic segment (5011) extends No. three sleeve pipe (5), arc segment (5012) are located the upper end of elastic segment (5011), arc segment (5012) are towards No. three sleeve pipe (5) the inboard, no. two coaxial sleeve pipe (403) are seted up for annular sleeve pipe (403) in the annular side wall (403), the arc-shaped section (5012) penetrates through the limiting hole (403) and extends into the second sleeve (4), and a driving assembly for driving the second sleeve (4) to move downwards is arranged on the upper side of the second sleeve (4).
2. The three-phase intelligent electric energy meter according to claim 1, wherein the driving assembly comprises a first sleeve (3), a rotating shaft (6) and a pressure spring (8), a second sleeve (4), a third sleeve (5), the rotating shaft (6) and the pressure spring (8) are coaxially arranged in the first sleeve (3), the third sleeve (5) is fixedly connected to the lower end of the inner side of the first sleeve (3), a plurality of limit tables (301) are arranged in a circumferential array in the middle of the inner wall of the first sleeve (3), sliding grooves (302) are arranged between the limit tables (301), the guide direction of the sliding grooves (302) is vertically downward, the upper end of the limit tables (301) is provided with a first guide surface (3011) and a second guide surface (3012), the first guide surface (3011) and the second guide surface (3012) are inclined to the sliding groove (302) on one side, a vertical surface is arranged between the first guide surface (3011) and the second guide surface (2), the second guide surface (3013) is provided with a plurality of guide surfaces (3013) which are connected to the annular protrusion end surfaces (401) on the outer side of the second sleeve (401), the vertical projection of spacing face (3013) is located between the highest point and the minimum of No. three guide surfaces (402), pivot (6) sliding connection is in spacing platform (301) upside, the lower ring annular array of pivot (6) is equipped with multichannel and slides protruding (601), the lower terminal surface that slides protruding (601) is the inclined plane, the upper end of No. one sleeve pipe (3) is equipped with top cap (9), body fixed connection of top cap (9) and electric energy meter, the upper and lower both ends of pressure spring (8) are connected in the up end of pivot (6) and the lower terminal surface of top cap (9) respectively.
3. The three-phase intelligent electric energy meter according to claim 2, wherein the limiting hole (403) comprises a limiting section (4031) and a guiding section (4032), the width of the limiting section (4031) is the same as the width of the elastic section (5011), the guiding section (4032) is located at the upper end of the limiting section (4031), the guiding section (4032) is arranged obliquely upwards, and the inner end of the guiding section (4032) is higher than the outer end.
4. The three-phase intelligent electric energy meter according to claim 2, wherein a plurality of avoidance holes (303) are formed in an annular array on the outer side wall of the first sleeve (3), the plurality of avoidance holes (303) are waist-shaped holes, the plurality of elastic sections (5011) extend into the avoidance holes (303), heat dissipation holes (404) are formed between the adjacent limiting holes (403), vent holes (304) are formed between the adjacent avoidance holes (303), and the avoidance holes (303) and the vent holes (304) completely penetrate through the inner side of the second sleeve (4) and the outer side of the first sleeve (3).
5. The three-phase intelligent electric energy meter according to claim 2, wherein the outer side wall of the first sleeve (3) is provided with a mounting hole (305) in an annular array, the central axes of the mounting holes (305) are perpendicular to the central axis of the first sleeve (3), the mounting holes (305) are internally provided with magnetic blocks (10), and the upper side of the second sleeve (4) is made of a magnetic material.
6. The three-phase intelligent electric energy meter according to claim 2, wherein the lower end of the third sleeve (5) is provided with a pressing ring (7), the pressing ring (7) comprises a connecting section (701) and a deformation section, the connecting section (701) is annular and fixedly connected with the third sleeve (5), the deformation section is located at the inner side of the connecting section (701), the deformation section is composed of a plurality of elastic sheets (702) which are annularly arranged, the deformation section is in an upward protruding frustum shape, the upper ends of the plurality of elastic sheets (702) are provided with pilot bosses (7021), the pilot bosses (7021) extend to the upper side of the deformation section, and the plurality of pilot bosses (7021) are located between the inner side of the second sleeve (4) and the inner side of the third sleeve (5).
7. The three-phase intelligent electric energy meter according to claim 1, wherein the minimum diameter of the contact end (5013) is D1, the diameter of the electric wire (11) is D2, d1=d2- (0.2-1.0) mm, and a chamfer is provided on the inner side of the lower end of the contact end (5013).
8. The three-phase intelligent electric energy meter according to claim 6, wherein the first sleeve (3), the second sleeve (4) and the pressing ring (7) are made of any insulating flame-retardant material including PVC, PI, PC, PET or PPS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202411417284.4A CN119355324A (en) | 2024-10-11 | 2024-10-11 | A three-phase intelligent electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411417284.4A CN119355324A (en) | 2024-10-11 | 2024-10-11 | A three-phase intelligent electric energy meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120064862A (en) * | 2025-04-30 | 2025-05-30 | 中科摩通(常州)智能制造股份有限公司 | EMB testing device and method for commercial vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120064862A (en) * | 2025-04-30 | 2025-05-30 | 中科摩通(常州)智能制造股份有限公司 | EMB testing device and method for commercial vehicle |
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