CN110346747B - Single-phase electric energy meter on-site calibration device - Google Patents
Single-phase electric energy meter on-site calibration device Download PDFInfo
- Publication number
- CN110346747B CN110346747B CN201910720085.3A CN201910720085A CN110346747B CN 110346747 B CN110346747 B CN 110346747B CN 201910720085 A CN201910720085 A CN 201910720085A CN 110346747 B CN110346747 B CN 110346747B
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- electric energy
- energy meter
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- groove
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- 238000009434 installation Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 16
- 238000012795 verification Methods 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 230000000994 depressogenic effect Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims 3
- 239000000523 sample Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
-
- 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
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention provides a single-phase electric energy meter on-site calibration device which comprises an electric energy meter calibration device and a clamping positioning mechanism used for being connected and fixed with an electric energy meter, wherein the clamping positioning mechanism comprises a movable support frame, a side pulling frame and a locking assembly, the movable support frame is of a U-shaped structure, telescopic supports are symmetrically arranged on two sides of the movable support frame and movably arranged in the locking assembly, a buckle is arranged at the top of the telescopic supports, a locking stepped groove for preventing the buckle from moving downwards is arranged in the locking assembly, the locking assembly is fixed on the outer wall of the side pulling frame, the top of the side pulling frame extends to form an inwards bent clamping frame, hanging lugs are symmetrically arranged on two sides of the electric energy meter calibration device, and slots matched with the clamping frame are formed in the hanging lugs. The check meter can be connected to the checked single-phase electric energy meter, an operator is not required to watch during on-site check, and the operation is simpler and more convenient.
Description
[ Field of technology ]
The invention relates to the technical field of measuring instruments, in particular to a single-phase electric energy meter on-site calibration device.
[ Background Art ]
In the international recommendations and certification protocols for electric energy meters (as well as the international and domestic standards), certification of electric energy meters is prescribed to be conducted under laboratory conditions. However, how the electric energy meter thus verified performs under the field condition is a problem. Because the electric energy meter works under the field condition, the display reading of the electric energy meter is directly related to charging, so that a user is very important to see whether the field reading of the electric energy meter is correct. The on-site verification is to carry an on-site calibrator for the electric energy meter, and to connect the on-site calibrator to a power grid where the electric energy meter to be calibrated is located, and to compare the electric energy readings of the electric energy meter to be calibrated and the calibrator in the same time, so as to obtain the error of the electric energy meter to be calibrated. However, the shape of the existing electric energy meter on-site calibrator is independently designed, and the calibrator cannot be installed in the space of an electric energy meter box, so that movable lead connection is needed when voltage, current and signals are measured, operators are required to watch during calibration, and meanwhile, the calibration time is limited, so that errors of the electric energy meter under various operation conditions are difficult to calibrate. Therefore, a single-phase electric energy meter on-site verification device is provided.
[ Invention ]
The invention aims to solve the problems in the prior art, and provides a single-phase electric energy meter on-site calibration device which can connect a calibration instrument to a calibrated single-phase electric energy meter, and is more convenient to operate without the need of operator on duty during on-site calibration.
In order to achieve the above purpose, the invention provides a single-phase electric energy meter on-site calibration device, which comprises an electric energy meter calibration device and a clamping positioning mechanism used for being connected and fixed with an electric energy meter, wherein the clamping positioning mechanism comprises a movable support frame, a side pulling frame and a locking assembly, the movable support frame is of a U-shaped structure, two sides of the movable support frame are symmetrically provided with telescopic supports, the telescopic supports are movably arranged in the locking assembly, the tops of the telescopic supports are provided with buckles, the locking assembly is internally provided with locking step grooves for preventing the buckles from moving downwards, the locking assembly is fixed on the outer wall of the side pulling frame, the tops of the side pulling frame are extended with inwards bent clamping frames, hanging lugs are symmetrically arranged on two sides of the electric energy meter calibration device, and slots matched with the clamping frames are formed in the hanging lugs.
Preferably, the locking assembly comprises a limit screw, a guide limit frame, a locking installation frame and an unlocking card, a first sliding cavity is formed in the guide limit frame, a strip-shaped sliding groove is formed in the telescopic support, the strip-shaped sliding groove is arranged along the length direction of the first sliding cavity, the limit screw penetrates through the strip-shaped sliding groove to be installed on the guide limit frame, and a first through groove for the fastener to penetrate out is formed in the top of the guide limit frame.
Preferably, the upper portion of the guide limit frame is provided with a locking installation frame, a locking stepped groove communicated with the first through groove is formed between the locking installation frame and the top end of the guide limit frame, the side wall of the locking installation frame is symmetrically provided with second through grooves, the second through grooves are symmetrically arranged on two sides of the locking stepped groove, two ends of the unlocking card are extended with downward bent convex arc-shaped supporting feet, the end parts of the convex arc-shaped supporting feet extend into the second through grooves, and the upper end face of the locking installation frame is further provided with an installation groove matched with the unlocking card.
Preferably, the buckle is the structure of falling U font, and bilateral symmetry is equipped with the stabilizer blade, the top of stabilizer blade is equipped with outside convex locking fixture block, locking fixture block's lower terminal surface is equipped with ladder anticreep face, locking fixture block's upper portion is equipped with the arc and leads in the face.
Preferably, the movable support frame further comprises an elastic buffer plate and a cross beam, wherein the cross beam is provided with an installation cavity, and the elastic buffer plate is movably installed in the installation cavity through a plurality of elastic sleeve brackets.
Preferably, one side of the electric energy meter checking device downwards extends to form a detection main body, one side of the electric energy meter is provided with a concave part matched with the detection main body, one side of the detection main body is provided with a limiting baffle frame, the limiting baffle frame is propped against one side of the concave part to be matched with the concave part, two ends of the limiting baffle frame are extended to form bending parts, the end parts of the bending parts are provided with leading-in inclined planes, the upper end faces of the electric energy meter and the electric energy meter checking device are respectively provided with a display input screen, and one end of the electric energy meter checking device far away from the detection main body does not shield the display input screen of the electric energy meter.
The invention has the beneficial effects that: according to the invention, through the cooperation of the movable support frame, the side pull frame, the locking component and the like, the electric energy meter calibration device and the single-phase electric energy meter to be detected are conveniently clamped and fixed, the installation process is simple, the operation is convenient, the side pull frame is clamped with the hanging lugs of the calibration device, a framework which can be telescopic with the electric energy meter in a matched mode is formed between the side pull frame and the movable support frame, after the installation, the movable support frame is pushed upwards to shrink until the buckle is matched with the locking component, the quick installation can be realized, when the detection is finished, the unlocking can be realized by driving the two sides of the buckle to shrink inwards through the unlocking card, then the buckle is pulled out of the locking installation frame, and the movable support frame can be pulled downwards, so that the electric energy meter calibration device and the single-phase electric energy meter to be detected can be split.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ Description of the drawings ]
FIG. 1 is a schematic diagram of a single-phase electric energy meter field calibration device;
FIG. 2 is a top view of an electric energy meter calibration device of the single-phase electric energy meter field calibration device of the present invention;
FIG. 3 is a schematic diagram of a clamping and positioning mechanism of a single-phase electric energy meter field calibration device according to the present invention;
FIG. 4 is a schematic diagram of the internal structure of a locking assembly of a single-phase electric energy meter field calibration device of the present invention;
FIG. 5 is a schematic view of a buckle of a single-phase electric energy meter field calibration device according to the present invention;
FIG. 6 is a right side view of a clamping and positioning mechanism of a single-phase electric energy meter field calibration device according to the present invention;
FIG. 7 is an enlarged schematic view of a single-phase power meter field verification device of the present invention at A;
fig. 8 is a schematic top view of a limit stop of a single-phase electric energy meter field calibration device of the present invention.
[ Detailed description ] of the invention
Referring to fig. 1 to 8, the single-phase electric energy meter on-site calibration device of the invention comprises an electric energy meter calibration device 2 and a clamping and positioning mechanism 3 used for being connected and fixed with an electric energy meter 1, wherein the clamping and positioning mechanism 3 comprises a movable support frame 4, a side pulling frame 5 and a locking assembly 6, the movable support frame 4 is in a U-shaped structure, two sides of the movable support frame 4 are symmetrically provided with telescopic supports 41, the telescopic supports 41 are movably arranged in the locking assembly 6, the tops of the telescopic supports 41 are provided with buckles 42, the locking assembly 6 is internally provided with locking stepped grooves 620 for preventing the buckles 42 from moving downwards, the locking assembly 6 is fixed on the outer wall of the side pulling frame 5, the tops of the side pulling frame 5 are extended with inwards bent clamping frames 51, two sides of the electric energy meter calibration device 2 are symmetrically provided with hanging lugs 21, and slots 210 matched with the clamping frames 51 are formed in the hanging lugs 21. The locking assembly 6 comprises a limit screw 60, a guide limit frame 61, a locking installation frame 62 and an unlocking card 63, a first sliding cavity 610 is formed in the guide limit frame 61, a strip-shaped sliding groove 411 is formed in the telescopic support 41, the strip-shaped sliding groove 411 is arranged along the length direction of the first sliding cavity 610, the limit screw 60 penetrates through the strip-shaped sliding groove 411 and is installed on the guide limit frame 61, and a first through groove 611 for the fastener 42 to penetrate is formed in the top of the guide limit frame 61. The upper portion of the guide limit frame 61 is provided with a locking installation frame 62, a locking stepped groove 620 communicated with the first through groove 611 is formed between the locking installation frame 62 and the top end of the guide limit frame 61, the side wall of the locking installation frame 62 is symmetrically provided with a second through groove 621, the second through groove 621 is symmetrically arranged on two sides of the locking stepped groove 620, two ends of the unlocking card 63 are extended with downward bent convex arc-shaped supporting legs 631, the end parts of the convex arc-shaped supporting legs 631 extend into the second through groove 621, and the upper end face of the locking installation frame 62 is further provided with an installation groove 622 matched with the unlocking card 63. The buckle 42 is of an inverted U-shaped structure, support legs 421 are symmetrically arranged on two sides, locking clamping blocks 422 protruding outwards are arranged at the tops of the support legs 421, step anti-falling surfaces 423 are arranged on the lower end surfaces of the locking clamping blocks 422, and arc-shaped leading-in surfaces 424 are arranged on the upper portions of the locking clamping blocks 422. The movable supporting frame 4 further comprises an elastic buffer plate 43 and a cross beam 44, the cross beam 44 is provided with an installation cavity 400, and the elastic buffer plate 43 is movably installed in the installation cavity 400 through a plurality of elastic sleeve brackets 431.
Further, one side downwardly extending of electric energy meter calibration device 2 has detection main part 22, one side of electric energy meter 1 has the depressed part with detection main part 22 looks adaptation, one side of detection main part 22 is equipped with spacing fender frame 20, spacing fender frame 20 offsets to lean on the cooperation with one side of depressed part, the both ends of spacing fender frame 20 extend there is kink 201, the tip of kink 201 is equipped with leading-in inclined plane 202, the up end of electric energy meter 1, electric energy meter calibration device 2 is equipped with the display input screen respectively, the one end that detection main part 22 was kept away from to electric energy meter calibration device 2 does not shelter from the display input screen of electric energy meter 1. The voltage elastic probe set 23 and the signal elastic probe set 24 are arranged below the detection main body 22, the voltage elastic probe set comprises a phase line voltage elastic probe contacted with a phase line terminal button of the single-phase electric energy meter and a zero line voltage elastic probe contacted with a zero line terminal button of the single-phase electric energy meter, the signal elastic probe set comprises an active pulse input signal elastic probe contacted with an active pulse output signal terminal button of the single-phase electric energy meter and a 485 signal elastic probe contacted with a 485 signal terminal button of the single-phase electric energy meter, and a current signal input port for inputting a current signal of the single-phase electric energy meter is arranged on the electric energy meter checking device.
The working process of the invention comprises the following steps:
According to the single-phase electric energy meter field calibration device, in the using process, the side pull frame is clamped with the hanging lugs of the calibration device, a telescopic frame matched with the electric energy meter is formed between the side pull frame and the movable support frame, then the electric energy meter calibration device is placed above the electric energy meter, the limiting baffle frame is abutted against one side of the electric energy meter, at the moment, the voltage elastic probe assembly is contacted with the corresponding wiring end on the electric energy meter, after preliminary installation is realized, the movable support frame is pushed upwards to shrink until the buckle is matched with the locking assembly, rapid installation can be realized, and detection operation on the electric energy meter can be started; when detection is finished and disassembly is needed, unlocking can be achieved by inwards shrinking two sides of the unlocking card, the two sides of the unlocking card are inwards pressed to shrink, the unlocking card is driven to inwards shrink, then the locking card is pulled out of the locking installation frame to be separated from the locking stepped groove, at the moment, the movable support frame can be downwards stretched, the frame is opened, the electric energy meter calibration device can be detached from the single-phase electric energy meter to be detected, and the elastic buffer plate is arranged on the movable support frame, so that the pressure between the electric energy meter calibration device and the electric energy meter can be reduced, and damage to the electric energy meter calibration device and the electric energy meter is avoided.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (4)
1. A single-phase electric energy meter on-site verification device is characterized in that: including electric energy meter calibration equipment (2), and be used for being connected fixed clamping positioning mechanism (3) with electric energy meter (1), clamping positioning mechanism (3) are including movable support frame (4), side draw frame (5) and locking subassembly (6), movable support frame (4) are U font structure, the bilateral symmetry of movable support frame (4) is equipped with telescopic bracket (41), telescopic bracket (41) movable mounting is in locking subassembly (6), buckle (42) are installed at the top of telescopic bracket (41), be equipped with locking ladder groove (620) that prevents buckle (42) downwardly moving in locking subassembly (6), locking subassembly (6) are fixed in the outer wall of side draw frame (5), the top of side draw frame (5) is extended to have inwards buckling clamping frame (51), the bilateral symmetry of electric energy meter calibration equipment (2) is equipped with hangers (21), offer slot (210) with clamping frame (51) looks adaptation in the hangers (21), locking subassembly (6) are equipped with locking ladder groove (620) including buckle (60), guide screw (61), guide frame (61) are equipped with one and the inside of guide frame (610) is equipped with spacing groove (411, the utility model discloses a device for checking electric energy meter, including strip-shaped sliding groove (411), limit screw (60), guide limiting frame (61), first logical groove (611) that supplies buckle (42) to wear out is offered at the top of guide limiting frame (61), one side downwardly extending of electric energy meter checking device (2) has detection main part (22), one side of electric energy meter (1) has the depressed part with detection main part (22) looks adaptation, one side of detection main part (22) is equipped with spacing spacer (20), one side of spacing spacer (20) and depressed part offsets and lean on the cooperation, the both ends of spacing spacer (20) extend have kink (201), the tip of kink (201) is equipped with leading-in inclined plane (202), the up end of electric energy meter (1), electric energy meter checking device (2) is equipped with the display input screen respectively, one end that detection main part (22) was kept away from to electric energy meter (1) is shielded from the display input screen.
2. The single-phase electric energy meter on-site verification device of claim 1, wherein: the upper portion of direction spacing frame (61) is equipped with locking installing frame (62), have between the top of locking installing frame (62) and direction spacing frame (61) with first logical communicating slot (611) locking ladder groove (620), the lateral wall symmetry of locking installing frame (62) is equipped with second through groove (621), second through groove (621) symmetry sets up in the both sides of locking ladder groove (620), the both ends of unblock card (63) extend there is outer convex arc stabilizer blade (631) of buckling downwards, the tip of outer convex arc stabilizer blade (631) stretches into in second through groove (621), the up end of locking installing frame (62) still is equipped with mounting groove (622) with unblock card (63) looks adaptation.
3. The single-phase electric energy meter on-site verification device of claim 1, wherein: the buckle (42) is the structure of falling the U font, and bilateral symmetry is equipped with stabilizer blade (421), the top of stabilizer blade (421) is equipped with outside convex locking fixture block (422), the lower terminal surface of locking fixture block (422) is equipped with ladder anticreep face (423), the upper portion of locking fixture block (422) is equipped with arc leading-in face (424).
4. The single-phase electric energy meter on-site verification device of claim 1, wherein: the movable support frame (4) further comprises an elastic buffer plate (43) and a cross beam (44), wherein the cross beam (44) is provided with an installation cavity (400), and the elastic buffer plate (43) is movably installed in the installation cavity (400) through a plurality of elastic sleeve brackets (431).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910720085.3A CN110346747B (en) | 2019-08-06 | 2019-08-06 | Single-phase electric energy meter on-site calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910720085.3A CN110346747B (en) | 2019-08-06 | 2019-08-06 | Single-phase electric energy meter on-site calibration device |
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| Publication Number | Publication Date |
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| CN110346747A CN110346747A (en) | 2019-10-18 |
| CN110346747B true CN110346747B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910720085.3A Active CN110346747B (en) | 2019-08-06 | 2019-08-06 | Single-phase electric energy meter on-site calibration device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115792789A (en) * | 2020-09-24 | 2023-03-14 | 国网山东省电力公司临沂供电公司 | Electric energy meter field calibration method |
| CN115494444A (en) * | 2021-06-18 | 2022-12-20 | 太原市优特奥科电子科技有限公司 | Electric energy meter calibration device |
| CN114384293B (en) * | 2022-01-17 | 2022-08-12 | 中南仪表有限公司 | DC electronic multi-rate electric energy meter |
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| CN205562787U (en) * | 2016-03-10 | 2016-09-07 | 嘉兴市瑞科仪表科技有限公司 | Full -automatic three -phase watt -hour meter calibrating |
| CN106019208A (en) * | 2016-07-20 | 2016-10-12 | 国网上海市电力公司 | Three-phase high-efficient great-error electric energy detecting and calculating apparatus |
| CN107219495A (en) * | 2017-06-07 | 2017-09-29 | 国家电网公司 | For electric energy meter field wiring push type buckle electric wire connecting junction |
| CN206649151U (en) * | 2017-03-08 | 2017-11-17 | 深圳市四三一一检测有限公司 | A kind of device of quick correcting phase error of energy meter |
| CN109683120A (en) * | 2018-12-25 | 2019-04-26 | 江苏盛德电子仪表有限公司 | A kind of single-phase cost-control intelligent table and its method of calibration with remote verification module |
| CN210487960U (en) * | 2019-08-06 | 2020-05-08 | 海盐新跃电器有限公司 | On-spot calibration equipment of single-phase electric energy meter |
-
2019
- 2019-08-06 CN CN201910720085.3A patent/CN110346747B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205562787U (en) * | 2016-03-10 | 2016-09-07 | 嘉兴市瑞科仪表科技有限公司 | Full -automatic three -phase watt -hour meter calibrating |
| CN106019208A (en) * | 2016-07-20 | 2016-10-12 | 国网上海市电力公司 | Three-phase high-efficient great-error electric energy detecting and calculating apparatus |
| CN206649151U (en) * | 2017-03-08 | 2017-11-17 | 深圳市四三一一检测有限公司 | A kind of device of quick correcting phase error of energy meter |
| CN107219495A (en) * | 2017-06-07 | 2017-09-29 | 国家电网公司 | For electric energy meter field wiring push type buckle electric wire connecting junction |
| CN109683120A (en) * | 2018-12-25 | 2019-04-26 | 江苏盛德电子仪表有限公司 | A kind of single-phase cost-control intelligent table and its method of calibration with remote verification module |
| CN210487960U (en) * | 2019-08-06 | 2020-05-08 | 海盐新跃电器有限公司 | On-spot calibration equipment of single-phase electric energy meter |
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