CN112965024A - Automatic measuring error verification system for multi-type three-phase electric energy meter - Google Patents
Automatic measuring error verification system for multi-type three-phase electric energy meter Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
Abstract
The invention provides an automatic measuring error verification system for a multi-type three-phase electric energy meter, and belongs to the technical field of electric energy meter verification. The system comprises an installation platform and a verification terminal, wherein an ammeter conveying groove is formed above the installation platform, an ammeter conveying belt is arranged in the ammeter conveying groove, and an ammeter lifting platform is arranged at the bottom of the ammeter conveying groove; the both sides of ammeter conveyer trough are arranged and are provided with a plurality of seats of feeding, and the seat of feeding can be followed the axis direction of perpendicular to ammeter conveyer trough and fed. The feeding seat is provided with a calibrating device which comprises a base, an auxiliary probe assembly and a pulse detection assembly, and the base is provided with a current-voltage probe. The auxiliary probe assembly is arranged on the base and can slide back and forth along the base. The pulse detection assembly obtains metering data output by the electric energy meter to be detected in a pulse signal form. The system can meet the verification requirements of various three-phase electric energy meters simultaneously, a plurality of different verification assembly lines are not required to be arranged, the utilization rate of verification equipment is improved, and the verification cost of the electric energy meters is reduced.
Description
Technical Field
The invention belongs to the technical field of three-phase electric energy meter verification, and particularly relates to an automatic metering error verification system for a plurality of types of three-phase electric energy meters.
Background
At present, the intelligent three-phase electric energy meter that adopts the integrated design is widely used, but, when this kind of three-phase electric energy meter broke down, the only implementable mode that the guarantee electric power measurement work goes on smoothly was exactly to change the three-phase electric energy meter. In addition, in order to prevent inaccurate electric energy metering caused by tampering of the three-phase electric energy meter program, the three-phase electric energy meter software is not allowed to be upgraded on line. The intelligent three-phase electric energy meter with the integrated design is short in service life, and when new requirements are provided for functions of the three-phase electric energy meter, resource waste and reduction of social benefits are inevitably caused by replacement of the three-phase electric energy meter with a large number.
In 2012, the international legal measurement organization 'technical committee of electrical measurement instruments' formulated the standard of the IR46 active electric energy meter, broken through the integrated design idea, required the separation of electric energy meter electronic equipment and subassembly, measurement function and other functions are independent each other, and the accuracy and the stability of measurement part are not influenced in the online upgrade of non-measurement part. It is expected that the intelligent three-phase electric energy meter of the IR46 standard will be widely used in the future.
However, the integrally designed intelligent three-phase electric energy meter needs time to the intelligent three-phase electric energy meter of the IR46 standard, and during the time, the verification equipment for the three-phase electric energy meter needs to be capable of meeting the verification requirements of the integrally designed intelligent three-phase electric energy meter and the intelligent three-phase electric energy meter of the IR46 standard at the same time. The existing three-phase electric energy meter calibrating equipment is based on an integrally designed intelligent three-phase electric energy meter, a mounting seat, a current-voltage probe and an auxiliary probe for data interaction are designed, however, the contact position of the auxiliary probe is not reserved for the intelligent three-phase electric energy meter with the IR46 standard, so that the existing calibrating equipment cannot meet the calibrating requirement of the intelligent three-phase electric energy meter with the IR46 standard.
Disclosure of Invention
In view of this, the invention provides an automatic calibration system for metering errors of multiple types of three-phase electric energy meters, so as to solve the technical problem that the calibration equipment for three-phase electric energy meters in the prior art cannot simultaneously meet the calibration requirements of the integrally designed intelligent three-phase electric energy meter and the intelligent three-phase electric energy meter with the IR46 standard.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an automatic metering error verification system for a multi-type three-phase electric energy meter comprises an installation platform and a verification terminal, wherein an electric meter conveying groove is formed above the installation platform, an electric meter conveying belt is arranged in the electric meter conveying groove, and an electric meter lifting platform is arranged at the bottom of the electric meter conveying groove; a plurality of feeding seats are arranged on two sides of the electric meter conveying groove and can feed along the direction perpendicular to the central axis of the electric meter conveying groove; feed and be provided with the calibrating installation that is used for examining and determine three-phase electric energy meter metering error on the seat, calibrating installation includes:
the base is fixed on the feeding seat, a current and voltage probe is arranged on the base, and the current and voltage probe can be connected with a current and voltage terminal of the three-phase electric energy meter to be detected;
the auxiliary probe assembly is arranged on the base and can slide back and forth along the base; the auxiliary probe assembly comprises an auxiliary probe, and the auxiliary probe can be connected with an auxiliary communication terminal of the three-phase electric energy meter to be detected and is used for acquiring metering data of the three-phase electric energy meter to be detected; the auxiliary probe comprises an installation part and a detection part, and a first clamping table is formed at the joint of the installation part and the detection part; and
the pulse detection assembly is arranged on the base and comprises a pulse acquisition module, and the pulse acquisition module is used for acquiring metering data output by the three-phase electric energy meter to be detected in a pulse signal form;
the verification terminal is electrically connected with the auxiliary probe and the pulse acquisition module and used for receiving the metering data acquired by the auxiliary probe and the pulse acquisition module.
Preferably, calibrating installation still includes standard table and error calculator, the standard table the auxiliary probe pulse acquisition module electric connection the error calculator, the error calculator is used for obtaining the metering data of standard table and the metering data of waiting to examine three-phase electric energy meter respectively to calculate the metering error.
Preferably, the pulse acquisition module comprises a photoelectric collector, and the photoelectric collector is used for forming an electric signal according to an optical signal sent by the three-phase electric energy meter to be detected and transmitting the electric signal to the error calculator.
Preferably, the pulse collection module includes bluetooth pulse collection subassembly, bluetooth pulse collection subassembly includes bluetooth receiver and bluetooth converter, bluetooth receiver is used for receiving the bluetooth pulse signal of waiting to examine the broadcast of three-phase electric energy meter, the bluetooth converter be used for with bluetooth pulse signal conversion can by the signal of telecommunication of error calculator discernment.
Preferably, the pulse acquisition module still includes the label recognizer, label recognizer electric connection examination terminal, examination terminal still is used for the basis the label information of label recognizer feedback, to bluetooth receiver sends instruction information, makes bluetooth receiver with wait to examine three-phase electric energy meter communication.
Preferably, the auxiliary probe assembly further comprises a driving fixing frame, a sliding driving member and a mounting sliding seat, the mounting sliding seat is slidably disposed on the base, and the auxiliary probe is mounted on the mounting sliding seat and is parallel to the sliding direction of the mounting sliding seat; the driving fixing frame is fixed on the base, the sliding driving piece is installed on the driving fixing frame, and the output end of the sliding driving piece is connected with the installation sliding seat; the sliding driving piece drives the installation sliding seat to slide back and forth.
Preferably, the auxiliary probe assembly further comprises a fixing clamping plate, and the fixing clamping plate is sleeved outside the auxiliary probe and is detachably mounted on the mounting sliding seat; a row of probe positioning holes are formed in the fixing clamping plate and comprise a detection part trepanning and an installation part trepanning, and a second clamping table is formed at the joint of the detection part trepanning and the installation part trepanning; the auxiliary probe penetrates through the probe positioning hole, and the second clamping table is clamped with the first clamping table.
Preferably, the pulse detection assembly further comprises a support frame, the support frame comprises an upright rod and a cross rod, the upright rod is inserted into the base, and the height of the upper end of the upright rod relative to the base can be adjusted; the sliding sleeve is arranged at the upper end of the upright rod, and the cross rod is inserted into the sliding sleeve and can be adjusted forwards and backwards along the sliding sleeve.
Preferably, a direct type three-phase electric energy meter calibrating device for calibrating the direct type three-phase electric energy meter is arranged on the feeding seat positioned on the left side of the electric energy meter conveying groove, and a mutual inductance type three-phase electric energy meter calibrating device for calibrating the mutual inductance type three-phase electric energy meter is arranged on the feeding seat positioned on the right side of the electric energy meter conveying groove; the current-voltage probe of the direct type three-phase electric energy meter calibrating device and the power supply end of the current-voltage probe of the mutual inductance type three-phase electric energy meter calibrating device are connected with a power supply switching component, and the power supply switching component is used for switching the direct type three-phase electric energy meter calibrating device and the mutual inductance type three-phase electric energy meter calibrating device.
Preferably, the power supply switching assembly is electrically connected to the verification terminal.
According to the technical scheme, the invention provides the automatic measuring error calibrating system for the multi-type three-phase electric energy meter, which has the beneficial effects that: set up the ammeter conveyer trough in the centre of mounting platform, the perpendicular to can be followed in the both sides setting of ammeter conveyer trough the seat of feeding that the axis direction of ammeter conveyer trough fed feeds, feeds and sets up the calibrating installation who is used for examining and determine three-phase electric energy meter metering error on the seat, and calibrating installation includes the base and sets up current and voltage probe, supplementary probe subassembly, pulse detection subassembly on the base, supplementary probe subassembly slidable mounting in on the base. When carrying out measurement error to three-phase electric energy meter and examining, load the three-phase electric energy meter in the tray the ammeter conveyer belt conveys to preset position, and ammeter lift platform holds up the ammeter, it follows the perpendicular to feed the seat the axis direction of ammeter conveyer trough feeds, makes current-voltage probe plugs into with the current-voltage terminal of waiting to examine three-phase electric energy meter. When the integrally designed intelligent three-phase electric energy meter needs to be calibrated, for example, the 2009 version and the 2013 version intelligent three-phase electric energy meter are calibrated, the auxiliary probe assembly slides to the front end along the base, so that the auxiliary probe is connected with an auxiliary communication terminal of the three-phase electric energy meter to be detected, and the metering data of the integrally designed intelligent three-phase electric energy meter is obtained. When the intelligent three-phase electric energy meter with the IR46 standard needs to be calibrated, the intelligent three-phase electric energy meter with the IR46 standard is not provided with an auxiliary communication terminal, at the moment, the auxiliary probe assembly slides to the rear end along the base, the auxiliary probe assembly is not in contact with the three-phase electric energy meter to be calibrated, and the pulse detection assembly is used for acquiring a metering data signal output by the three-phase electric energy meter to be calibrated in a pulse signal mode. This an automatic verification system of metering error for polymorphic type three-phase electric energy meter can satisfy the examination demand of multiple three-phase electric energy meter simultaneously, especially examines and determine 2009 version, the intelligent three-phase electric energy meter of 2013 version intelligence three-phase electric energy meter and IR46 standard, need not to set up the difference of a plurality of examination assembly lines in order to realize detecting respectively to the three-phase electric energy meter of above-mentioned different grade type, improves examination equipment rate of utilization, reduces three-phase electric energy meter examination cost.
Drawings
Fig. 1 is a schematic structural diagram of an automatic metering error verification system for a multi-type three-phase electric energy meter.
Fig. 2 is a side view of an automatic calibration system for metering error of a multi-type three-phase electric energy meter.
Fig. 3 is a schematic structural diagram of a mutual inductance type three-phase electric energy meter calibrating device.
Fig. 4 is a partially enlarged view of a portion B shown in fig. 3.
Fig. 5 is a schematic structural diagram of the direct type three-phase electric energy meter calibrating device.
Fig. 6 is a partially enlarged view of the portion C shown in fig. 5.
FIG. 7 is a functional schematic diagram of an automatic calibration system for the metering error of the multi-type three-phase electric energy meter.
Fig. 8 is a cross-sectional view of the assay device.
Fig. 9 is a partially enlarged view of a portion a shown in fig. 8.
FIG. 10 is a schematic view of the structure of the fixing clip.
In the figure: automatic metering error verification system 1 for multi-type three-phase electric energy meter, mounting platform 20, verification terminal 30, electric meter conveyor belt 21, electric meter lifting platform 22, feeding seat 23, verification device 10, base 100, current-voltage probe 110, auxiliary probe assembly 200, auxiliary probe 210, mounting part 211, detecting part 212, first clamping table 213, driving fixing frame 220, sliding driving part 230, probe mounting sliding seat 240, fixing clamping plate 250, probe positioning hole 251, detecting part sleeve hole 2511, mounting part sleeve hole 2512, second clamping table 2513, connecting lug 252, pulse detecting assembly 300, pulse collecting module 310, photoelectric collector 311, Bluetooth pulse collecting assembly 312, Bluetooth receiver 3121, Bluetooth converter 3122, label recognizer 313, supporting frame 320, vertical rod 321, cross rod 322, sliding sleeve 323, positioning piece 324, standard meter 400, error calculator 500, direct three-phase electric energy meter verification device 11, direct three-phase electric energy meter, The device comprises a mutual inductance type three-phase electric energy meter calibrating device 12 and a power supply switching component 13.
Detailed Description
The technical scheme and the technical effect of the invention are further elaborated in the following by combining the drawings of the invention.
Referring to fig. 1 and fig. 2, in a specific embodiment, an automatic calibration system 1 for metering errors of multiple types of three-phase electric energy meters is used for calibrating the metering errors of different types of three-phase electric energy meters, especially 2009 version and 2013 version intelligent three-phase electric energy meters and IR46 standard intelligent three-phase electric energy meters, on the same equipment. The system comprises a mounting platform 20 and a verification terminal 30, wherein an electric meter conveying groove is formed in the upper portion of the mounting platform 20, an electric meter conveying belt 21 is arranged in the electric meter conveying groove, and an electric meter lifting platform 22 is arranged at the bottom of the electric meter conveying groove. The both sides of ammeter conveyer trough are arranged and are provided with a plurality of seats 23 that feed, feed the seat 23 and can follow the perpendicular to the axis direction of ammeter conveyer trough feeds. The feeding seat 23 is provided with a calibrating device 10 for calibrating the metering error of the three-phase electric energy meter.
Referring to fig. 3 to 7, the calibrating apparatus 10 includes a base 100, an auxiliary probe assembly 200 and a pulse detection assembly 300, the base 100 is fixed on the feeding base 23, a current-voltage probe 110 is disposed on the base 100, and the current-voltage probe 110 can be connected to a current-voltage terminal of a three-phase electric energy meter to be tested. Supplementary probe subassembly 200 set up in on the base 100, and can follow slide around the base 100, supplementary probe subassembly 200 includes supplementary probe 210, supplementary probe 210 can plug into with the supplementary communication terminal of examining the three-phase electric energy meter of waiting for acquire the measurement data of examining the three-phase electric energy meter. The pulse detection assembly 300 is arranged on the base 100 and comprises a pulse acquisition module 310, wherein the pulse acquisition module 310 is used for acquiring metering data of the three-phase electric energy meter to be detected output in a pulse signal form. The verification terminal 30 is electrically connected to the auxiliary probe 210 and the pulse acquisition module 310, and is configured to receive the metering data acquired by the auxiliary probe 210 and the pulse acquisition module 310.
Further, the calibrating apparatus 10 further includes a standard meter 400 and an error calculator 500, the standard meter 400, the auxiliary probe 210, the pulse acquisition module 310 is electrically connected to the error calculator 500, and the error calculator 500 is configured to obtain the metering data of the standard meter 400 and the metering data of the three-phase electric energy meter to be detected respectively, and calculate a metering error.
When carrying out measurement error to three-phase electric energy meter and examining, load the three-phase electric energy meter in the tray the ammeter conveyer belt 21 conveys to preset position, and ammeter lift platform 22 holds up the ammeter, it is perpendicular to feed seat 23 the axis direction of ammeter conveyer trough feeds, makes current-voltage probe 110 plugs into with the current-voltage terminal of waiting to examine three-phase electric energy meter.
When the integrally designed intelligent three-phase electric energy meter needs to be calibrated, for example, the 2009 version and the 2013 version intelligent three-phase electric energy meter are calibrated, the auxiliary probe assembly 200 slides to the front end along the base 100, so that the auxiliary probe 210 is connected with an auxiliary communication terminal of the three-phase electric energy meter to be detected, and the metering data of the integrally designed intelligent three-phase electric energy meter is obtained. When the intelligent three-phase electric energy meter with the IR46 standard needs to be verified, the intelligent three-phase electric energy meter with the IR46 standard is not provided with an auxiliary communication terminal, at the moment, the auxiliary probe assembly 200 slides to the rear end along the base 100, the auxiliary probe assembly 200 is not in contact with the three-phase electric energy meter to be detected, and the metering data signals output by the three-phase electric energy meter to be detected in a pulse signal mode are acquired through the pulse detection assembly 300. This an automatic verification system of metering error 1 for polymorphic type three-phase electric energy meter can satisfy the examination demand of multiple three-phase electric energy meter simultaneously, especially examines and determine 2009 version, the intelligent three-phase electric energy meter of 2013 version intelligence three-phase electric energy meter and IR46 standard, need not to set up the difference of a plurality of examination assembly lines in order to realize detecting respectively to the three-phase electric energy meter of above-mentioned different grade type, improves examination equipment rate of utilization, reduces three-phase electric energy meter examination cost.
In the detection process, after the current-voltage probe 110 is connected with a current-voltage terminal of the three-phase electric energy meter to be detected, the three-phase electric energy meter to be detected automatically measures data such as electric quantity and the like to form measurement data, and broadcasts in a pulse mode or outputs the measurement data through a communication auxiliary terminal. The auxiliary probe 210 or the pulse acquisition module 310 acquires the metering data on the corresponding epitope one to one, outputs the metering data to the error calculator 500, compares the metering data with the metering data of the standard meter 400 to obtain error data, completes the calibration operation of the three-phase electric energy meter to be tested, and has the advantages of rapid calibration process and high accuracy.
It should be noted that the pulse acquisition module 310 may be a wireless acquisition module of a communication module built in a three-phase electric energy meter according to the IR46 standard, for example, may be a photoelectric acquisition device or a data receiving module based on a wireless communication protocol such as bluetooth, Zigbee, WIFI, or the like. The selection of the type of the pulse acquisition module 310 can be adjusted according to the type of the communication module built in the three-phase electric energy meter of the IR46 standard.
For example, the pulse collection module 310 includes a photo collector 311, and the photo collector 311 is configured to form an electrical signal according to an optical signal emitted by the three-phase electric energy meter to be detected, and transmit the electrical signal to the error calculator 500. At present, the pulse signal of the IR46 standard three-phase electric energy meter is sent out by the optical pulse signal, and the optical collector 311 captures the optical pulse signal, converts the optical pulse signal into an electrical signal, and outputs the electrical signal to the error calculator 500, so as to verify the error of the IR46 standard three-phase electric energy meter which sends data by the optical pulse signal.
For example, the pulse collection module 310 includes a bluetooth pulse collection module 312, the bluetooth pulse collection module 312 includes a bluetooth receiver 3121 and a bluetooth converter 3122, the bluetooth receiver 3121 is used for receiving bluetooth pulse signals of the three-phase electric energy meter to be detected broadcast, the bluetooth converter 3122 is used for converting the bluetooth pulse signals into electric signals that can be recognized by the error calculator 500. For the three-phase power meter of the IR46 standard with a built-in bluetooth module, the bluetooth receiver 3121 may first receive the bluetooth pulse signal, and the bluetooth converter 3122 may convert the bluetooth pulse signal into an electrical signal that can be received by the error calculator 500, so as to verify the error of the three-phase power meter of the IR46 standard that transmits data with the bluetooth pulse signal.
It is worth pointing out that the photoelectric collector 311 and the bluetooth pulse collecting component 312, or other wireless communication components may exist separately or coexist, so as to meet the error detection requirements of the three-phase electric energy meter with different communication forms and IR46 standards. When a plurality of wireless communication assemblies coexist, a relay for switching communication modes is arranged, and different types of communication modes are manually selected.
In a preferred embodiment, the pulse collection module 310 further includes a tag identifier 313, the tag identifier 313 is electrically connected to the verification terminal 30, and the verification terminal 30 is further configured to send instruction information to the bluetooth receiver 3121 according to tag information fed back by the tag identifier 313, so that the bluetooth receiver 3121 communicates with the three-phase electric energy meter to be detected. Generally, the manual handheld tag identifier is used for scanning and identifying the three-phase electric energy meter to be detected one by one, and the verification terminal 30 sends an instruction to the bluetooth receiver 3121, so that connection is established one by one, and manpower is wasted. In this embodiment, each epitope is provided with one tag identifier 313, the tag information of the three-phase electric energy meter to be detected of the current epitope is scanned and acquired, and is transmitted to the verification terminal 30, the verification terminal 30 sends an instruction to the bluetooth receiver 3121, and one-to-one connection is established, so that automatic verification operation is realized.
Referring to fig. 3 and 4, in another embodiment, the pulse detection assembly 300 further includes a support frame 320, the support frame 320 includes a vertical rod 321 and a cross rod 322, the vertical rod 321 is disposed on the base 100, and the cross rod 322 is vertically disposed above the vertical rod 321.
Further, the upright rod 321 is inserted into the base 100, and the height of the upper end of the upright rod 321 relative to the base 100 can be adjusted. For example, the plugging depth of the upright rod 321 can be adjusted, or the upright rod 321 has a telescopic structure or the base 100 is provided with a lifting structure, so as to meet the verification requirements of three-phase electric energy meters with different heights.
Further, the upper end of the upright rod 321 is provided with a sliding sleeve 323, and the cross rod 322 is inserted into the sliding sleeve 323 and can be adjusted back and forth along the sliding sleeve 323. Further, a positioning member 324 is disposed on the sliding sleeve 323, and the positioning member 324 is used for fixing the cross bar 322 in the sliding sleeve 323. The position of the cross rod 322 in the sliding sleeve 323 is adjusted, so that the position of the pulse acquisition module 310 at the end part of the cross rod 322 is adjusted, the calibration of the three-phase electric energy meter with the IR46 standard of different communication module positions is met, and the calibration accuracy is improved.
Referring to fig. 8 to 10, in another embodiment, the auxiliary probe assembly 200 further includes a driving holder 220, a sliding driver 230, and a mounting slider 240, wherein the mounting slider 240 is slidably disposed on the base 100, and the auxiliary probe 210 is mounted on the mounting slider 240 and is parallel to the sliding direction of the mounting slider 240. The driving fixing frame 220 is fixed on the base 100, the sliding driving member 230 is installed on the driving fixing frame 220, the output end of the sliding driving member is connected with the installation sliding seat 240, and the sliding driving member 230 drives the installation sliding seat 240 to slide back and forth. When the intelligent three-phase electric energy meter of integrated design needs to be verified, for example, the intelligent three-phase electric energy meter of 2009 edition, 2013 edition is verified, the sliding driving piece 230 drives the installation sliding seat 240 slides forward to the foremost end, and when the intelligent three-phase electric energy meter of IR46 standard needs to be verified, the sliding driving piece 230 drives the installation sliding seat 240 slides backward to the rearmost end, so that the auxiliary probe 210 is far away from the three-phase electric energy meter to be detected, and the auxiliary probe 210 is prevented from touching the three-phase electric energy meter to be detected.
Further, the auxiliary probe 210 includes a mounting portion 211 and a detecting portion 212, the mounting portion 211 is inserted into the mounting slide 240, and the detecting portion 212 is used for connecting with the three-phase electric energy meter to be detected. The joint of the mounting portion 211 and the detecting portion 212 forms a first clamping table 213.
Further, in order to facilitate the detachment of the auxiliary probe 210, the auxiliary probe assembly 200 further includes a fixing clip 250, wherein the fixing clip 250 is sleeved outside the auxiliary probe 210 and detachably mounted on the mounting slide 240. The fixing clamp plate 250 is provided with a row of probe positioning holes 251, each probe positioning hole 251 comprises a detection part sleeve hole 2511 and an installation part sleeve hole 2512, and a second clamping table 2513 is formed at the joint of the detection part sleeve hole 2511 and the installation part sleeve hole 2512. The auxiliary probe 210 passes through the probe positioning hole 251, and the second clamping table 2513 is clamped with the first clamping table 213.
The auxiliary probe 210 is clamped on the mounting slide 240 by the fixing clamping plate 250, when the auxiliary probe 210 is mounted, the auxiliary probe 210 is inserted into the mounting slide 240, the fixing clamping plate 250 is sleeved outside the auxiliary probe 210 and fixed on the mounting slide 240, and the auxiliary probe 210 is firmly mounted on the mounting slide 240 by the interaction force of the first clamping table 213 and the second clamping table 2513. When the auxiliary probe 210 is detached, the fixing clamping plate 250 is released from the mounting slide 240, and the auxiliary probe 210 can be pulled out by removing the fixing clamping plate 250 from the auxiliary probe 210, so that the auxiliary probe 210 can be rapidly mounted and detached, and the operation efficiency is improved.
Specifically, if the radius of the mounting portion 211 is greater than the radius of the detecting portion 212, the connecting portion between the mounting portion 211 and the detecting portion 212 is formed with a variable diameter, and the connecting portion is regarded as the first clamping table 213. Correspondingly, if the radius of the probe sleeve hole 2511 is smaller than the radius of the mounting sleeve hole 2512, a reducing diameter is formed at the joint of the probe sleeve hole 2511 and the mounting sleeve hole 2512, and the second clamping table 2513 is considered. When the auxiliary probe 210 is mounted, the rear end of the mounting portion 211 is inserted into the mounting slider 240, and at this time, the first chuck 213 protrudes from the mounting slider 240. The fixing clamp plate 250 is sleeved on the auxiliary probe 210, the mounting portion sleeve hole 2512 is sleeved on the outer side of the mounting portion 211, the detecting portion sleeve hole 2511 is sleeved on the outer side of the detecting portion, the second clamping table 2513 is attached to the first clamping table 213, and meanwhile, the auxiliary probe 210 is pressed inwards by the second clamping table 2513, so that the auxiliary probe 210 is firmly fixed. When the probe is disassembled, the fixing clip 250 is released from the mounting slider 240, and the auxiliary probe 210 can be easily removed by withdrawing the fixing clip 250. The device realizes quick installation and dismantlement of auxiliary probe 210 improves the operating efficiency, simultaneously, the in-process of installation and dismantlement need not right auxiliary probe 210 exerts too big effort, protects auxiliary probe 210, avoids auxiliary probe 210 damages in the installation and dismantlement process.
Further, the two ends of the fixing clip 250 are provided with connecting lugs 252, the connecting lugs 252 are detachably fixed on the mounting slide 240, for example, the connecting lugs 252 are fastened on the mounting slide 240, and preferably, the connecting lugs 252 are fixed on the mounting slide 240 by screws, so as to improve the firmness of mounting and the convenience of dismounting the auxiliary probe 210.
With continuing reference to fig. 1 to fig. 6, in another embodiment, in order to further improve the applicability of the automatic calibration system 1 for measuring errors of multiple types of three-phase electric energy meters, a direct type three-phase electric energy meter calibration device 11 for calibrating a direct type three-phase electric energy meter is disposed on the feeding base 23 located on the left side of the electric energy meter conveying trough, and a mutual inductance type three-phase electric energy meter calibration device 12 for calibrating a mutual inductance type three-phase electric energy meter is disposed on the feeding base 23 located on the right side of the electric energy meter conveying trough. The current-voltage probe 110 of the direct type three-phase electric energy meter calibrating device 11 and the power supply end of the current-voltage probe 110 of the mutual inductance type three-phase electric energy meter calibrating device 12 are connected with a power supply switching component 13, the power supply switching component 13 is used for switching the direct type three-phase electric energy meter calibrating device 11 and the mutual inductance type three-phase electric energy meter calibrating device 12 supplies power.
For the direct type three-phase electric energy meter and the mutual inductance type three-phase electric energy meter, the current and voltage access modes are different, the voltage terminal of the mutual inductance type three-phase electric energy meter can be directly accessed, but the current terminal needs to be accessed through a current transformer, and the access terminal forms of the current and the voltage are different, so that the power supply needs to be switched during actual verification. In this embodiment, be located set up respectively on the left feed seat 23 of ammeter conveyer trough and be used for examining direct formula three-phase electric energy meter calibrating installation 11 of direct formula three-phase electric energy meter and be used for examining mutual inductance formula three-phase electric energy meter calibrating installation 12 of mutual inductance formula three-phase electric energy meter, if examine to examine the three-phase electric energy meter and be direct formula three-phase electric energy meter, then supply electric switching module 13 and switch to left calibrating installation 100 power supply, if examine to decide the three-phase electric energy meter and be mutual inductance formula three-phase electric energy meter, then supply electric switching module 13 and switch to right calibrating installation 100 power supply, realize the on-line measuring to direct formula three.
Further, the power supply switching component 13 is electrically connected to the verification terminal 30 to implement online switching of power supply.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The automatic metering error verification system for the multi-type three-phase electric energy meters is characterized by comprising an installation platform and a verification terminal, wherein an electric meter conveying groove is formed above the installation platform, an electric meter conveying belt is arranged in the electric meter conveying groove, and an electric meter lifting platform is arranged at the bottom of the electric meter conveying groove; a plurality of feeding seats are arranged on two sides of the electric meter conveying groove and can feed along the direction perpendicular to the central axis of the electric meter conveying groove; feed and be provided with the calibrating installation that is used for examining and determine three-phase electric energy meter metering error on the seat, calibrating installation includes:
the base is fixed on the feeding seat, a current and voltage probe is arranged on the base, and the current and voltage probe can be connected with a current and voltage terminal of the three-phase electric energy meter to be detected;
the auxiliary probe assembly is arranged on the base and can slide back and forth along the base; the auxiliary probe assembly comprises an auxiliary probe, and the auxiliary probe can be connected with an auxiliary communication terminal of the three-phase electric energy meter to be detected and is used for acquiring metering data of the three-phase electric energy meter to be detected; the auxiliary probe comprises an installation part and a detection part, and a first clamping table is formed at the joint of the installation part and the detection part; and
the pulse detection assembly is arranged on the base and comprises a pulse acquisition module, and the pulse acquisition module is used for acquiring metering data output by the three-phase electric energy meter to be detected in a pulse signal form;
the verification terminal is electrically connected with the auxiliary probe and the pulse acquisition module and used for receiving the metering data acquired by the auxiliary probe and the pulse acquisition module.
2. The automatic calibration system for the metering errors of the multiple types of three-phase electric energy meters as claimed in claim 1, wherein the calibration device further comprises a standard meter and an error calculator, the standard meter, the auxiliary probe and the pulse acquisition module are electrically connected to the error calculator, and the error calculator is used for respectively acquiring the metering data of the standard meter and the metering data of the three-phase electric energy meter to be tested and calculating the metering errors.
3. The automatic calibration system for the metering errors of the multiple types of three-phase electric energy meters as claimed in claim 2, wherein the pulse collection module comprises a photoelectric collector, and the photoelectric collector is used for forming an electric signal according to the optical signal sent by the three-phase electric energy meter to be tested and transmitting the electric signal to the error calculator.
4. The automatic calibration system for metering errors of multiple types of three-phase electric energy meters as claimed in claim 2 or 3, wherein the pulse acquisition module comprises a Bluetooth pulse acquisition component, the Bluetooth pulse acquisition component comprises a Bluetooth receiver and a Bluetooth converter, the Bluetooth receiver is used for receiving Bluetooth pulse signals broadcasted by the three-phase electric energy meter to be tested, and the Bluetooth converter is used for converting the Bluetooth pulse signals into electric signals capable of being recognized by the error calculator.
5. The automatic calibration system for the metering errors of the multiple types of three-phase electric energy meters as claimed in claim 4, wherein the pulse acquisition module further comprises a tag identifier, the tag identifier is electrically connected with the calibration terminal, and the calibration terminal is further configured to send instruction information to the bluetooth receiver according to the tag information fed back by the tag identifier, so that the bluetooth receiver communicates with the three-phase electric energy meter to be calibrated.
6. The automatic calibration system for metering errors of multiple types of three-phase electric energy meters as claimed in claim 1, wherein the auxiliary probe assembly further comprises a driving fixing frame, a sliding driving member and a mounting sliding seat, the mounting sliding seat is slidably arranged on the base, the auxiliary probe is mounted on the mounting sliding seat and is parallel to the sliding direction of the mounting sliding seat; the driving fixing frame is fixed on the base, the sliding driving piece is installed on the driving fixing frame, and the output end of the sliding driving piece is connected with the installation sliding seat; the sliding driving piece drives the installation sliding seat to slide back and forth.
7. The automatic calibration system for the metering errors of the multiple types of three-phase electric energy meters as claimed in claim 6, wherein the auxiliary probe assembly further comprises a fixing clamping plate, the fixing clamping plate is sleeved outside the auxiliary probe and is detachably mounted on the mounting sliding seat; a row of probe positioning holes are formed in the fixing clamping plate and comprise a detection part trepanning and an installation part trepanning, and a second clamping table is formed at the joint of the detection part trepanning and the installation part trepanning; the auxiliary probe penetrates through the probe positioning hole, and the second clamping table is clamped with the first clamping table.
8. The automatic calibration system for the metering errors of the multiple types of three-phase electric energy meters as claimed in claim 1, wherein the pulse detection assembly further comprises a support frame, the support frame comprises a vertical rod and a cross rod, the vertical rod is inserted into the base, and the height of the upper end of the vertical rod relative to the base can be adjusted; the sliding sleeve is arranged at the upper end of the upright rod, and the cross rod is inserted into the sliding sleeve and can be adjusted forwards and backwards along the sliding sleeve.
9. The automatic calibration system for the metering errors of multiple types of three-phase electric energy meters as claimed in claim 1, wherein the feeding seat positioned at the left side of the electric energy meter conveying groove is provided with a direct type electric energy meter calibration device for calibrating the direct type electric energy meter, and the feeding seat positioned at the right side of the electric energy meter conveying groove is provided with a mutual inductance type electric energy meter calibration device for calibrating the mutual inductance type electric energy meter; the direct type electric energy meter calibrating device comprises a direct type electric energy meter calibrating device, a mutual inductance type electric energy meter calibrating device and a power supply switching assembly, wherein the current voltage probe of the direct type electric energy meter calibrating device and the power supply end of the current voltage probe of the mutual inductance type electric energy meter calibrating device are connected with the power supply switching assembly, and the power supply switching assembly is used for switching the direct type electric energy meter calibrating device and the mutual inductance type electric energy meter calibrating device.
10. The automatic calibration system for metering errors of multiple types of three-phase electric energy meters according to claim 9, wherein the power supply switching module is electrically connected with the calibration terminal.
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