CN201269866Y - Apparatus used for verifying on-line chromatographic instrument - Google Patents

Apparatus used for verifying on-line chromatographic instrument Download PDF

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Publication number
CN201269866Y
CN201269866Y CNU2008201527892U CN200820152789U CN201269866Y CN 201269866 Y CN201269866 Y CN 201269866Y CN U2008201527892 U CNU2008201527892 U CN U2008201527892U CN 200820152789 U CN200820152789 U CN 200820152789U CN 201269866 Y CN201269866 Y CN 201269866Y
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China
Prior art keywords
shell
online
oil
verification
calibration
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Expired - Lifetime
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CNU2008201527892U
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Chinese (zh)
Inventor
彭伟
周新雅
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East China Power Test and Research Institute Co Ltd
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East China Power Test and Research Institute Co Ltd
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Abstract

The utility model provides a device for the calibration of an online chromatograph, wherein, a closed cyclic space is formed by an upper cylindrical body, a lower cylindrical body and an external pipeline. Under the action of a circulating pump, oil and gas are fully mixed in the closed cyclic space to realize the preparation of standard insulating oil; a temperature controller is used for simulating the operation environment of the insulating oil in the physical device, and the calibration of the online chromatograph is realized in different environments by changing temperature and other parameters; and by arranging an oil sample connection on the lower cylindrical body, the application of off-line sampling in the chromatographic detection of a laboratory can be realized. In addition, the whole device is arranged on a movable trammer so as to ensure that the movability is available in the device and the use is more convenient. The device for the calibration of the online chromatograph can carry out the calibration simultaneously to a plurality of online chromatographs and the oil samples can be reused, thereby saving cost.

Description

The device that is used for the verification online gc
Technical field
The utility model relates to a kind of calibration equipment, particularly a kind of device that is used for the verification online gc.
Background technology
For a long time, dissolved gas analysis (dissolvedgas analysis in the insulating oil (comprising transformer oil, condenser oil), DGA)---gas chromatographic analysis, being known as by countries in the world is to monitor and diagnose oil-filled power equipment initial failure, prevention bust the best way.And carrying out along with the status of electric power service work, utilize online gc to carry out instant content detection and become more and more important being dissolved in various characteristic gas in the transformer insulation oil, wherein the most basic is that the test accuracy of online gc is carried out Real-Time Evaluation.
Initial dissolved gas analysis is based on breadboard analysis and detection technology, by regularly detecting in the laboratory behind the collection in worksite oil sample, cycle generally (is artificially shortening test period if need more than three months, then can increase workload), can't carry out the real-time and effective monitoring to gas in the oil.For this reason, be devoted to both at home and abroad in recent years to carry out the research of on-line monitoring principle and the development of device, and released various types of on-line chromatograph monitoring devices (online gc) installation and operation in actual production system.From ruuning situation investigation and analysis to the on-line chromatograph monitoring device, also there is certain deficiency in the technology in this field at present, mainly be that some on-line chromatograph monitoring devices are because the technology that itself adopts and the quality of element, exist sensitivity, the time stickiness, stability, accuracy and serviceable life etc. the aspect defective, cause wrong report, fail to report phenomenon and happen occasionally, and the failure rate height has increased plant maintenance workload and maintenance cost.
In view of this, the evaluation to the online gc test accuracy seems particularly important.The method of inspection commonly used at present is that online gc is installed on actual motion equipment or the laboratory fuel tank, the sampling chromatographic detection in chamber that experimentizes, by comparative experiments chamber detected value and online gc displayed value, realize evaluation to the online gc test accuracy.The subject matter of way existence at present is:
Detect as if online gc is installed on the actual motion equipment, because gas content is relatively stable in the physical device oil, detection can run into many inconvenience under the normal condition, and can't carry out the multiple spot verification simultaneously.
Detect as if online gc is installed on the fuel tank of laboratory,, be difficult to obtain stable standard oil sources because the dissolving and the release of gas in oil is in a dynamic process all the time; And the flow state and the temperature conditions of oil all are not inconsistent with actual conditions in the fuel tank, have influenced the accuracy of estimating.
Therefore, how to provide a kind of device that is used for the verification online gc, reduce above-mentioned drawback and become the technical matters that industry needs to be resolved hurrily.
The utility model content
The technical matters that the utility model solved is to provide a kind of device that is used for the verification online gc, can simulate various working environments, and the test accuracy of online gc is effectively assessed.
For solving the problems of the technologies described above, the utility model provides a kind of device that is used for the verification online gc, it comprises upper shell, lower shell, exterior line and ebullator, described upper shell is connected with lower shell, described lower shell links to each other with ebullator by exterior line, and constitutes a cyclic space; Described exterior line is provided with injecting hole, and described lower shell is provided with oil hole; Also be provided with at least one oil sample sample tap on the described lower shell and be used for the external tapping that is connected with tested online gc with at least one.
Described upper shell links to each other with lower shell by a connecting pipe, and described communicating pipe is provided with valve.The liquid level gauge that described upper shell is equipped with vacuum pumping opening, vacuum meter and monitors inner oil mass.
Described lower shell inside is provided with well heater and temperature sensor, and described lower shell outer wall is equipped with earth leakage protective device.Described device also comprises the circuit control unit that links to each other with above-mentioned well heater, temperature sensor, earth leakage protective device and ebullator, and this circuit control unit also has an operation and a display panel, and panel is provided with operation push-button and display screen.
In addition, described device also can be installed in the activity go-cart.
The preparation of standard insulating oil in that oil and gas are fully mixed, is realized in the sealing and circulating space that the device that is used for the verification online gc of the present utility model constitutes by upper and lower cylindrical shell, exterior line in this sealing and circulating space; Utilize temperature controller analog insulation oil residing running environment in physical device, and realize the verification of online gc under varying environment by changing parameters such as temperature; By a plurality of external tappings are set, can realize many chromatographic while verifications on lower shell; Lower shell is provided with the oil sample sample tap, can realize that the off-line sampling is used for the laboratory and detects.In addition, whole calibration equipment is installed in the activity go-cart, makes it have mobility, use more convenient.Adopt the device that is used for the verification online gc of the present utility model to carry out verification to many online gcs simultaneously, and oil sample can reuse, save cost.
Description of drawings
Fig. 1 is the left view of the device that is used for the verification online gc of the utility model one preferred embodiment.
Fig. 2 is the front partial schematic diagram of the device that is used for the verification online gc of the utility model one preferred embodiment.
Fig. 3 is the partial right side view of the device that is used for the verification online gc of the utility model one preferred embodiment.
Embodiment
Below by specific embodiment embodiment of the present utility model is described, those skilled in the art can understand other advantages of the present utility model and effect easily by the content that this instructions disclosed.The utility model also can be implemented or used by other different specific embodiments, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present utility model not deviating from.
The device that is used for the verification online gc described in the utility model can be applicable in the gas chromatographic analysis (DGA) of power equipment transformer insulation oil online gc be carried out verification.
Referring to Fig. 1 to Fig. 3, the chromatographic instrument calibration device of a preferred embodiment of the present invention mainly comprises upper shell 1, lower shell 2, exterior line 3 and ebullator 4, and whole device places in the activity go-cart 5, is convenient to move.Upper shell 1 has certain oil storage space, and its effect is similar to " conservator ", is connected to lower shell 2 by a connecting pipe 20, is used for to lower shell 2 automatic repairings, is in oil-overflow state all the time to keep lower shell 2.Vacuum pumping opening 11 is equipped with at this upper shell 1 top, can connect the external vacuum pump, be used for described calibration equipment is vacuumized to realize vacuum oil, upper shell 1 is connected to vacuum meter 13 (see figure 2)s by a vacuum tube, is used for measuring when vacuumizing and showing inner vacuum condition.Upper shell 1 one sides also are provided with the liquid level gauge 10 that is used to monitor inner oil mass, can carry out the oil level monitoring when carrying out vacuum oil.
Described lower shell 2 is connected with ebullator 4 by exterior line 3, and the oil in the lower shell 2 does not stop to circulate under the effect of ebullator 4.Exterior line 3 is provided with injecting hole 31, can feed a certain amount of gas in lower shell 2, and the oil sample that circulates in these gases and the lower shell 2 mixes, and solves homogeneously in the oil, forms the standard insulating oil.
This lower shell 2 has at least one external tapping 21, is used for being connected with the signal picker of tested online gc, is provided with the external tapping of four different sizes in the present embodiment, thereby can be simultaneously the online gc of four different manufacturers productions be carried out verification.Lower shell 2 bottoms are connected to oil hole 22 by a pipeline, and by oil hole 22 oiling in lower shell 2 and upper shell 1, this oil hole 22 also can be arranged on other position of lower shell 2 certainly.Need to prove that the oil that injects in upper shell 1 and the lower shell 2 all is to handle through the dehydration degassing, is the standard insulating oil with what guarantee to prepare out.These lower shell 2 inside also are provided with well heater 23 and temperature sensor 24, and the working temperature when being used to control verification realizes under the different running temperatures check and evaluation to the online gc test accuracy.In addition, also be provided with relevant overtemperature prote system, be used for operating temperature range with a whole set of calibration equipment and be controlled between the room temperature to 90 ℃, temperature-controlled precision is in ± 0.5 ℃, and the rate of heat addition is 30 ℃/h.Referring to Fig. 3, also be provided with oil sample sample tap 210 on this lower shell 2, can carry out the off-line sampling by sample tap 210, the chamber chromatograph detects the gas content in the oil by experiment.
The vehicle body of this activity go-cart 5 is provided with circuit control unit 6, and this circuit control unit 6 is connected to an operation and a display panel 7.Wherein, the bottom of activity go-cart 5 has wheel, to support whole chromatographic instrument calibration device; Circuit control unit 6 is connected with described well heater 23, temperature sensor 24 and ebullator 4, with the control interlock circuit.Described lower shell 2 sidewalls also are provided with the earth leakage protective device 61 that is connected with described circuit control unit 6, are used for described chromatographic instrument calibration device is carried out earth leakage protection.Have operation push-button, display screen 71 and protective device 72 on operation and the display panel 7, wherein, protective device 72 is a fuse.This activity go-cart 5 also has a handrail 8, the whole chromatographic instrument calibration device of convenient passing.
The device that is used for the verification online gc of the present utility model in use, at first carry out the preparation of standard insulating oil, promptly by in lower shell 2, filling with the insulating oil of handling through the dehydration degassing (for example transformer oil, condenser oil), the requirement of preparing again according to the standard insulating oil, in lower shell 2, inject the gas of respective amount from injecting hole 31, through abundant circulation back formation standard insulating oil.Then, online gc to be checked is connected to described device by external tapping 21, and the chromatographic detected value of displayed value and laboratory of the tested online gc calculated value of gas content (or in the standard insulating oil) compared, to assess online chromatographic test accuracy.In checking procedure, can simulate different actual conditions by regulating environmental parameters such as temperature, to obtain, organize proof test values more, thereby assess online chromatographic test accuracy all sidedly.After verification finished, the oil in the cylindrical shell 1,2 was also reusable, only needed the vacuum pumping opening 11 at upper shell 1 top is connected with the external vacuum pump, and dissolved gases in the oil is taken away, and the oil that then is deposited in the cylindrical shell 1,2 becomes reusable insulating oil again.In addition, also can carry out instant off-line sampling by oil sample sample tap 210, after the oil of lower shell 2 was bled off a part, upper shell 1 can pass through communicating pipe 20 automatically to lower shell 2 repairings, to guarantee being full of insulating oil in the lower shell 2 all the time.
In sum, the device that is used for the verification online gc of the present utility model is realized the preparation of standard insulating oil by sealing and circulating, utilize temperature control and circulate analog insulation oil residing running environment in physical device, chromatographic instrument calibration device is installed in the activity go-cart makes it possess mobility, and utilize manual type to change the component concentration of oil dissolved gas at short notice, the comparison of the chromatographic detected value in the chamber calculated value of gas content (or in the standard insulating oil) and online gc video data by experiment realizes technical indicators such as the test accuracy of online gc and test response time are tested and estimated.
The foregoing description only is illustrative principle of the present utility model and effect thereof, but not is used to limit the utility model.Any those skilled in the art all can be under spirit of the present utility model and category, and the foregoing description is modified and changed.Therefore, rights protection scope of the present utility model should be foundation with the scope of claims.

Claims (8)

1, a kind of device that is used for the verification online gc is characterized in that, comprises upper shell, lower shell, exterior line and ebullator, and described upper shell is connected with lower shell, and described lower shell links to each other with ebullator by exterior line, and constitutes a cyclic space; Described exterior line is provided with injecting hole, and described lower shell is provided with oil hole; Also be provided with at least one oil sample sample tap on the described lower shell and be used for the external tapping that is connected with tested online gc with at least one.
2, the device that is used for the verification online gc as claimed in claim 1 is characterized in that, described upper shell links to each other with lower shell by a connecting pipe, and described communicating pipe is provided with valve.
3, the device that is used for the verification online gc as claimed in claim 1 is characterized in that, described upper shell is equipped with vacuum pumping opening and vacuum meter.
4, the device that is used for the verification online gc as claimed in claim 1 is characterized in that, described upper shell also is equipped with the liquid level gauge of the inner oil mass of monitoring.
5, the device that is used for the verification online gc as claimed in claim 1 is characterized in that, described lower shell inside is provided with well heater and temperature sensor, and described lower shell outer wall is equipped with earth leakage protective device.
6, the device that is used for the verification online gc as claimed in claim 5 is characterized in that, described device also comprises a circuit control unit, is connected to described well heater, temperature sensor, earth leakage protective device and ebullator.
7, the device that is used for the verification online gc as claimed in claim 6 is characterized in that, described circuit control unit also has an operation and a display panel, and panel is provided with operation push-button and display screen.
8, the device that is used for the verification online gc as claimed in claim 1 is characterized in that, described device is installed in the activity go-cart.
CNU2008201527892U 2008-09-05 2008-09-05 Apparatus used for verifying on-line chromatographic instrument Expired - Lifetime CN201269866Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101666784A (en) * 2008-09-05 2010-03-10 华东电力试验研究院有限公司 Chromatographic instrument calibration device
CN102109429A (en) * 2011-01-19 2011-06-29 四川电力科学研究院 Spot simulation device for fault oil product of transformer
CN103149345A (en) * 2013-02-25 2013-06-12 浙江省电力公司电力科学研究院 Detecting method and detecting device for intelligent dissolved gas-in-oil component
CN103412058A (en) * 2013-08-23 2013-11-27 国网青海省电力公司电力科学研究院 Automatic calibration device for dynamic error of movable on-line oil gas monitoring system
CN107607672A (en) * 2017-08-29 2018-01-19 广州海洋地质调查局 A kind of underwater gas sensor calibrator (-ter) unit and calibration method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101666784A (en) * 2008-09-05 2010-03-10 华东电力试验研究院有限公司 Chromatographic instrument calibration device
CN102109429A (en) * 2011-01-19 2011-06-29 四川电力科学研究院 Spot simulation device for fault oil product of transformer
CN103149345A (en) * 2013-02-25 2013-06-12 浙江省电力公司电力科学研究院 Detecting method and detecting device for intelligent dissolved gas-in-oil component
CN103149345B (en) * 2013-02-25 2015-07-15 浙江省电力公司电力科学研究院 Detecting method and detecting device for intelligent dissolved gas-in-oil component
CN103412058A (en) * 2013-08-23 2013-11-27 国网青海省电力公司电力科学研究院 Automatic calibration device for dynamic error of movable on-line oil gas monitoring system
CN107607672A (en) * 2017-08-29 2018-01-19 广州海洋地质调查局 A kind of underwater gas sensor calibrator (-ter) unit and calibration method
CN107607672B (en) * 2017-08-29 2018-12-28 广州海洋地质调查局 A kind of underwater gas sensor calibrator (-ter) unit and calibration method

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