CN208350982U - A kind of detection device of electric energy meter under cryogenic conditions - Google Patents
A kind of detection device of electric energy meter under cryogenic conditions Download PDFInfo
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- CN208350982U CN208350982U CN201821088891.0U CN201821088891U CN208350982U CN 208350982 U CN208350982 U CN 208350982U CN 201821088891 U CN201821088891 U CN 201821088891U CN 208350982 U CN208350982 U CN 208350982U
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Abstract
In order to solve the problems, such as electric energy meter detection difficult at low temperatures, the utility model provides a kind of detection device of electric energy meter under cryogenic conditions, belongs to power domain.The utility model includes detecting box 1, further includes low-temperature cabinet 8；It is equipped with detection device and standard electric energy meter 2 in the detecting box 1, meter hanging frame and cooling device 13 are equipped in the low-temperature cabinet 8, the cooling device 13 is arranged on meter hanging frame for realizing the cryogenic conditions in low-temperature cabinet 8, electric energy meter to be measured；Detection device is connect with standard electric energy meter 2 and electric energy meter to be measured simultaneously, detects the performance of electric energy meter.Refrigerating plant is provided in the utility model low-temperature cabinet 8, low temperature environment can be simulated, the performance of the electric energy meter to be measured in detection device while examination criteria electric energy meter 2 and low-temperature cabinet 8 in detecting box, realizes the stability and accuracy of detection electric energy meter under low-temperature condition.
Description
Technical field
The utility model relates to a kind of detection device of electric energy meter, in particular to a kind of electric energy meter inspection under cryogenic conditions
Device is surveyed, power domain is belonged to.
Background technique
With economic continuous development, electric power has become the most important energy of country.For civilian electric power, due to people
The extreme enrichment of people's material life, quality of life improve rapidly, and the demand to electric power is also increasing.But current resident uses
The management of electricity excessively falls behind, and residential electricity consumption management is under by continuous development, and country is in terms of smart grid construction at present
Dynamics is gradually increased, and the production capacity and quality control ability to electric energy meter manufacturer have new tightened up requirement.
Intelligent electric energy meter is the basic data in measuring equipment and power information acquisition system crucial in smart grid
Resource.Intelligent electric energy meter it is reliable and stable whether be related to meterage, the equipment operation, Electrical Safety and client of Utilities Electric Co.
A series of services such as power purchase.Under extremely low temperature, accurate metering, the normal display of intelligent electric energy meter seem especially with reliable communication
It is important.It also deepens continuously to its relevant research, but is specifically for the intelligent electric energy meter solution under the low temperature environment of pole
System research, at present both at home and abroad all without the complete research of systematicness.So there are electric energy meters to detect at low temperatures for the prior art
Difficult problem.
Utility model content
Purpose of the utility model is to solve electric energy meter at low temperatures detection difficult the problem of, the utility model
A kind of detection device of electric energy meter under cryogenic conditions is provided.
The detection device of electric energy meter being used under cryogenic conditions of the utility model, including detecting box 1, further include low-temperature cabinet 8；
It is equipped with detection device and standard electric energy meter 2 in the detecting box 1, is equipped with meter hanging frame and cooling device 13, institute in the low-temperature cabinet 8
Cooling device 13 is stated for realizing the cryogenic conditions in low-temperature cabinet 8, electric energy meter to be measured is arranged on meter hanging frame；
Detection device is connect with standard electric energy meter 2 and electric energy meter to be measured simultaneously, detects the performance of electric energy meter.
Preferably, the detection device includes signal source 3, power source 4, error handling units 5 and computer 6；
The control signal output of computer 6 is connect with the control signal input of signal source 3, and signal source 3 is believed
Number output end is connect with the generation signal input part of power source 4；
The power signal output end of power source 4 connects the power signal input of standard electric energy meter 2 and electric energy meter to be measured simultaneously
End；
The signal output end of standard electric energy meter 2 and electric energy meter to be measured is connect with error handling units 5 respectively,
The error-signal output of error handling units 5 and the error signal input of computer connect；
Preferably, several table supports 14 are provided on the meter hanging frame 9, the electric energy meter to be measured is set in table support 14.
Preferably, the detection device further includes photographic device 11 and monitor；
The photographic device 11 is arranged in low-temperature cabinet 8, and the photographic device 11 is used to shoot the electric energy meter to be measured in cabinet,
The monitor is arranged outside low-temperature cabinet 8, for showing the image of photographic device shooting.
Preferably, the bottom of the meter hanging frame 9 is provided with several universal wheels 12, is arranged on the side of the meter hanging frame 9
There is handle 10.
Preferably, the detection device further includes network relay, and the computer 6 connects the network relay, institute
It states network relay and internet is connected by signal wire.
Above-mentioned technical characteristic may be combined in various suitable ways or be substituted by equivalent technical characteristic, as long as can reach
To the purpose of this utility model.
The beneficial effects of the utility model are, are provided with refrigerating plant in low-temperature cabinet 8, can simulate low temperature environment, inspection
The performance of the detection device in cabinet while the electric energy meter to be measured in examination criteria electric energy meter 2 and low-temperature cabinet 8 is surveyed, realizes detection low
The stability and accuracy of electric energy meter under temperature state.The meter hanging frame of the utility model is equipped with multiple table supports, it can be achieved that batch detection.
Photographic device is provided in low-temperature cabinet 8, operator can avoid staff in the situation in the outer monitoring cabinet of low-temperature cabinet 8
It is in low temperature environment for a long time.The utility model is connect with internet, can be using long-range control and long-range monitoring, using more
It is convenient.
Detailed description of the invention
Fig. 1 is this practical schematic illustration；
Fig. 2 is the structural schematic diagram of the utility model detecting box；
Fig. 3 is the electronic schematic diagram of the utility model；
Fig. 4 is the structural schematic diagram of the utility model low-temperature cabinet 8；
Fig. 5 is the structural schematic diagram of the utility model meter hanging frame.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are in the premise for not making creative work
Under every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
Illustrate present embodiment in conjunction with Fig. 1 to Fig. 5, is detected described in present embodiment for the electric energy meter under cryogenic conditions
Device, including detecting box and low-temperature cabinet 8；Detection device and standard electric energy meter 2 are equipped in the detecting box, in the low-temperature cabinet 8
Equipped with meter hanging frame and cooling device 13, the cooling device 13 sets for realizing the cryogenic conditions in low-temperature cabinet 8, electric energy meter to be measured
It sets on meter hanging frame；
Detection device is connect with standard electric energy meter 2 and electric energy meter to be measured simultaneously, detects the performance of electric energy meter.
Cooling device 13 is provided in low-temperature cabinet 8, cooling device 13 is a freezing machine, which is set to low
On the outside of warm cabinet 8, it is connected in cold air output end and low-temperature cabinet 8,1 bottom of detecting box is provided with pedestal 7, keeps its more stable.
It is provided with refrigerating plant in low-temperature cabinet 8, low temperature environment can be simulated, the detection device in detecting box detects mark simultaneously
The performance of electric energy meter to be measured in quasi- electric energy meter 2 and low-temperature cabinet 8 realizes the stability and essence of detection electric energy meter under low-temperature condition
Exactness.
In preferred embodiment, as shown in Figure 3 and Figure 4, the detection device of present embodiment include signal source 3, power source 4,
Error handling units 5 and computer 6；
The control signal output of computer 6 is connect with the control signal input of signal source 3, and signal source 3 is believed
Number output end is connect with the generation signal input part of power source 4；
The power signal output end of power source 4 connects the power signal input of standard electric energy meter 2 and electric energy meter to be measured simultaneously
End；
The signal output end of standard electric energy meter 2 and electric energy meter to be measured is connect with error handling units 5 respectively,
The error-signal output of error handling units 5 and the error signal input of computer connect.
Signal source working principle: signal source uses the digital synthesis signal skill of advanced frequency-shift keying, amplitude modulation, phase modulation
Art is made of powerful programmable digital logic array CPLD chip, single-chip microprocessor MCU, D/A chip etc..MCU as required will
Sine wave fundamental wave or the harmonic value of superposition are stored in RAM after carrying out Digital Discrete, and frequency reference generator will by calculator
The sine wave digital quantity being stored in RAM is input to D/A converter, respectively obtains number with each other with certain phase relation
Synthesize sinusoidal signal.Using active low-pass filter, become voltage and current signals of the distortion factor less than 0.2%, as voltage
Power amplifier is input to the signal of electric current.The amplitude of signal source, which is adjusted, uses 16 D/A converters, reaches fineness adjustment
Full scale less than 0.01%.
Power source, that is, power amplifier, power amplifier use advanced pulse modulation technology, have high conversion efficiency,
The features such as output capacity is big, output reliability is high, load capacity is strong, output is stablized.And perfect abnormal protection is devised, it leads back
Road overcurrent protection, device overtemperature protection, output short-circuit overload, output open circuit protection etc., enable power amplifier steadily in the long term may be used
By work.The principle of power amplifier is: the voltage and current standard sine signal that signal source generates, respectively by respective anti-
Feedback compensation adjustment circuit is sent to voltage power amplifier and current amplification carries out power amplification.
The computer 6 of present embodiment is equivalent to control system, sends instructions to signal source 3 and display data such as margin of error
According to.
Detecting box 1 is a metal safe, will be arranged to from top to bottom multiple lattice in metal safe, is successively placed with mark from top to bottom
Quasi- electric energy meter 2, signal source 3, power source 4, error handling units 5 and computer 6；
Computer 6 includes host and display, and display is located at 1 middle position of detecting box, watches number convenient for operator
According to host is located at 1 bottom of detecting box, and error handling units 5 are an error processor, and power source 4 is three phase power source 4, can
Direct output AC voltage, alternating current, DC voltage, DC current, and can angle-adjustable, change frequency, superposition 0-6
Subharmonic.
Data interaction is carried out using RS-232 bus form between detection device each section.
Signal source 3 uses HS-6633 three-phase signal source.
Error handling units 5 are used to carry out the output of standard electric energy meter 2 and electric energy meter to be measured error comparison, and by error
Data pass computer 6 back.
The detection device working condition of present embodiment can be monitored by WEB server, and mobile phone remote is supported to connect
It connects and checks field device operation state, can guarantee equipment safety operation check at any time and can start in time after problem appearance
Warning function.
In preferred embodiment, as shown in figure 5, several table supports 14 are provided on the meter hanging frame 9 of present embodiment, it is described to be measured
Electric energy meter is set in table support 14.
Meter hanging frame 9 is a metal frame, and 9 profile of meter hanging frame uses 6063-T5, and resistance to corrosion is strong；Table support 14 uses aluminium
Alloy material is made, and no bullet mode is fixed on meter hanging frame 9, for fixing electric energy meter to be measured using screw；All impulse lines,
Connection uses contact pin form, is realized by screw and is connected with energy meter terminal；All pressure-wires are realized using U-shaped wiring fork
It is connected with electric energy meter.
In preferred embodiment, the detection device of present embodiment further includes photographic device 11 and monitor；
Photographic device 11 is arranged in low-temperature cabinet 8, and the photographic device 11 is used to shoot the electric energy meter to be measured in cabinet, described
Monitor is arranged outside low-temperature cabinet 8, for showing the image of photographic device shooting.
Operator can avoid staff for a long time in the situation in the outer monitoring cabinet of low-temperature cabinet 8 using monitor
It is in low temperature environment.
In preferred embodiment, the bottom of present embodiment meter hanging frame 9 is provided with several universal wheels 12, the side of meter hanging frame 9
On be provided with handle 10.
Universal wheel 12 is arranged in 9 bottom of meter hanging frame of present embodiment, is moved easily, in conjunction with handle convenient for operator to extension
Dial framework 9 pushes or pulls on.
In preferred embodiment, the detection device further includes network relay, and the computer 6 connects the network relay
Device, the network relay connect internet by signal wire.
Present embodiment is connect with internet, can be using long-range control, using more convenient.
In practical applications, the detecting box 1 of present embodiment works under room temperature environment, and electric energy meter to be measured includes single-phase electricity
48, table of energy, three-phase electric energy meter 24 are only hung on meter hanging frame 9, and the temperature of low-temperature cabinet 8 is arranged, and electric energy meter work to be measured
It asks in experimental situation, is detected by specific requirement of experiment using detecting box 1.
Although describing the utility model herein with reference to specific embodiment, it should be understood that, this
A little embodiments are only the example of the principles of the present invention and application.It should therefore be understood that can be to illustrative reality
It applies example and carries out many modifications, and can be designed that other arrangements, without departing from this reality as defined in the appended claims
With novel spirit and scope.It should be understood that can be combined by being different from mode described in original claim
Different dependent claims and feature described herein.It will also be appreciated that combining spy described in separate embodiments
Sign can be used in other embodiments.
Claims (6)
1. a kind of detection device of electric energy meter under cryogenic conditions, including detecting box (1), which is characterized in that further include low temperature
Cabinet (8)；Detection device and standard electric energy meter (2) are equipped in the detecting box (1), be equipped in the low-temperature cabinet (8) meter hanging frame and
Cooling device (13), the cooling device (13) are hung for realizing the cryogenic conditions in low-temperature cabinet (8), electric energy meter setting to be measured
On dial framework；
Detection device is connect with standard electric energy meter (2) and electric energy meter to be measured simultaneously, detects the performance of electric energy meter.
2. the detection device of electric energy meter according to claim 1 under cryogenic conditions, which is characterized in that the detection is set
Standby includes signal source (3), power source (4), error handling units (5) and computer (6)；
The control signal output of computer (6) is connect with the control signal input of signal source (3), the generation of signal source (3)
Signal output end is connect with the generation signal input part of power source (4)；
The power signal output end of power source (4) connects the power signal input of standard electric energy meter (2) and electric energy meter to be measured simultaneously
End；
The signal output end of standard electric energy meter (2) and electric energy meter to be measured is connect with error handling units (5) respectively,
The error-signal output of error handling units (5) and the error signal input of computer connect.
3. the detection device of electric energy meter according to claim 1 under cryogenic conditions, which is characterized in that the meter hanging frame
(9) several table supports (14) are provided on, the electric energy meter to be measured is set on table support (14).
4. the detection device of electric energy meter according to claim 1 under cryogenic conditions, which is characterized in that the detection dress
Set further includes photographic device (11) and monitor；
In low-temperature cabinet (8), the photographic device (11) is used to shoot the electric energy to be measured in cabinet for photographic device (11) setting
Table, the monitor setting is external in low-temperature cabinet (8), for showing the image of photographic device shooting.
5. the detection device of electric energy meter according to claim 1 or 3 under cryogenic conditions, which is characterized in that the extension
The bottom of dial framework (9) is provided with several universal wheels (12), is provided with handle (10) on the side of the meter hanging frame (9).
6. the detection device of electric energy meter according to claim 2 under cryogenic conditions, which is characterized in that the detection dress
Setting further includes network relay, and the computer (6) connects the network relay, and the network relay is connected by signal wire
Internet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821088891.0U CN208350982U (en) | 2018-07-10 | 2018-07-10 | A kind of detection device of electric energy meter under cryogenic conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821088891.0U CN208350982U (en) | 2018-07-10 | 2018-07-10 | A kind of detection device of electric energy meter under cryogenic conditions |
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| Publication Number | Publication Date |
|---|---|
| CN208350982U true CN208350982U (en) | 2019-01-08 |
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| CN201821088891.0U Expired - Fee Related CN208350982U (en) | 2018-07-10 | 2018-07-10 | A kind of detection device of electric energy meter under cryogenic conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200384A (en) * | 2021-12-14 | 2022-03-18 | 国网黑龙江省电力有限公司供电服务中心 | Electric energy meter detection device with multi-station structure |
-
2018
- 2018-07-10 CN CN201821088891.0U patent/CN208350982U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200384A (en) * | 2021-12-14 | 2022-03-18 | 国网黑龙江省电力有限公司供电服务中心 | Electric energy meter detection device with multi-station structure |
| CN114200384B (en) * | 2021-12-14 | 2023-08-29 | 国网黑龙江省电力有限公司供电服务中心 | Electric energy meter detection device with multiple detection modes |
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Granted publication date: 20190108 Termination date: 20200710 |