CN2906595Y - Sulfur hexafluoride gas density relay check analyzer - Google Patents
Sulfur hexafluoride gas density relay check analyzer Download PDFInfo
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- CN2906595Y CN2906595Y CN 200620042680 CN200620042680U CN2906595Y CN 2906595 Y CN2906595 Y CN 2906595Y CN 200620042680 CN200620042680 CN 200620042680 CN 200620042680 U CN200620042680 U CN 200620042680U CN 2906595 Y CN2906595 Y CN 2906595Y
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- host computer
- verification
- density
- density relay
- density monitor
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Abstract
The utility model discloses a density relay checking analyzer for sulfur hexafluoride gas, which comprises an electrical main board, an adjusting cylinder and a density relay, and is characterized in that: the analyzer further comprises a host computer, which is used for collecting and analyzing the values of temperature and pressure and data from the checking result which are stored in the electrical main board, and also used for storing the nominal parameters of the checked density relay; a communication module, which is connected between the host computer and the electrical main board, is designed for selecting, controlling and establishing a communicating channel between the electrical main board and host computer or external checking equipments; a data converter, which is connected between the communication module and the host computer, is used for converting the format of the data from the host computer or external checking equipments, and make the data transferred efficiently. The utility model samples by sampling leads which are connected with a density relay, and records the current pressure value and temperature, and can determine if the density of the checked density relay is in the precision range when the relay acts under the consideration of the precision class of the relay.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride (hereinafter to be referred as SF6) gas density relay check analysis device that is used for electric system.Particularly be suitable for SF6 gas is the verification and the analysis of SF6 gas density relay on the insulation and the SF6 electrical equipment body of arc-extinguishing medium.Be mainly in the electric system unit such as power plant, power supply administration in SF6 switchyard repair and maintenance process, the whether qualified foundation that provides of density monitor is provided, belong to electric system power transmission and transformation technical field.
Background technology
Nearly ten or twenty is over year, SF6 gas has obtained in the power high voltage field using widely because of its outstanding insulation and arc extinction performance, yet the leakage that produces in SF6 electric equipment operation process will have a strong impact on the runnability of equipment: show that mainly (1) switchgear dielectric strength reduces; (2) arc extinction performance of isolating switch descends; (3) breaking capacity of breaker descends.Therefore, for ensureing the safe operation of SF6 high-tension apparatus, must carry out strict monitoring to the density of SF6 gas.Thereby the birth of SF6 gas density relay, SF6 gas density relay have been arranged is the variation of SF6 gas density in the monitoring SF6 electrical equipment body, and its performance quality directly has influence on the safe and reliable operation of SF6 electrical equipment.
Be installed on SF6 gas density relay on the on-the-spot Switch main body because of stopping at a certain numerical value place for a long time, phenomenons such as the ineffective or poor contact of contacts of action appear in after date when causing one section, what have also the temperature compensation degradation can occur, causes the misoperation of SF6 gas density relay when variation of ambient temperature easily.Therefore need regularly the SF6 gas density relay to be carried out the performance calibrating.
Because the SF6 switch history of widespread usage at home is not long, the verification work to the switch support equipment does not at present obtain attention highly.On the one hand outmoded because of original verification hardware device, the verification work efficiency is low, in addition because of with low content of technology, judges coarsely, artificially error in judgement is big.SF6 gas density relay check analysis device is just for improving precision and the efficient that verification is judged, and the check analysis device based on the sampling automatically of novel collection, intelligent analysis and the processing of digitizing technique of design.The user can realize the verification and the analytical work of the density monitor of all manufacturer production both at home and abroad according to systematic parameter freely is set by the density monitor technical parameter of verification.
Summary of the invention
In order to address the above problem, the utility model be a kind of set up with on-the-spot SF6 electrical equipment upper density relay gas circuit and electric terminal loop after by gaseous environment is provided, and analog gas reveals the process cause pressure to descend, and determine whether this density monitor can satisfy the accuracy requirement of detection and after entering the critical zone relay whether can report to the police, the calibration equipment of block action.The physical interface characteristic of the density monitor that can produce at different manufacturers particularly, electrical specification and running parameter and carry out verification and analysis, thereby satisfy the accuracy of detection of calibrating all in the market on-the-spot density monitors with the high precision (0.25 grade) of this device, and whether density monitor produces warning and block action and precision difference thereof after entering warning and locking pressure threshold district, to guarantee that the SF6 gas density relay can satisfy the detection requirement that it is had, the security of operation of ultimate guarantee SF6 electrical equipment and the operation of the continuous and effective of whole electric system.For further improving the integrated management ability of user to checking data, be connected with host computer by communication port and the data line that is positioned at check analysis device panel by the checking data of verification density monitor, support advanced inquiry, statistical management and the printing of data by the drive software that is installed on host computer.For further improving the integrated management ability of user to checking data, be connected with host computer by communication port and the data line that is positioned at check analysis device panel by the checking data of verification density monitor, support advanced inquiry, statistical management and the printing of data by the drive software that is installed on host computer.
Sulfur hexafluoride gas density relay check analysis device of the present utility model, comprise electric mainboard, regulate cylinder and density monitor, it is characterized in that, described device further comprises: host computer, be connected with described electric mainboard, be used for gathering and analyze temperature, pressure value and the check results data of storing on the electric mainboard of described device, also be used to store nominal parameter by the verification density monitor; Communication module is connected between described host computer and the electric mainboard, is used to select, control and set up the communication port between electric mainboard and host computer or the external detection equipment.Data converter is connected between described communication module and the host computer, is used for electric mainboard is carried out Data Format Transform through the data of communication module and host computer or external detection equipment, effectively transmits.
Reasonable is that described device further comprises: some joints, be connected with described electric mainboard, and form the gas circuit path of described device, make up the gas circuit environment.
Reasonable is that described joint comprises: down from latching connector, be connected with described density monitor access port; Connector links to each other from latching connector down with described; Tracheae, two ends all link to each other with described connector; Crossover sub links to each other with described density monitor.
Reasonable is that described device further comprises: temperature sensor is connected described electric mainboard and by between the verification density monitor, is used for responding to offer by the temperature variations of verification density monitor gas circuit path; Pressure transducer is connected between described electric mainboard and the described adjusting cylinder, is used for responding to offer by the pressure changing of verification density monitor gas circuit path.
Reasonable is that described device further comprises: standby cylinder links to each other with described densitometer air-path interface.
Description of drawings
Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.
Fig. 1 is the utility model structured flowchart;
Fig. 2 is for connecting the tracheae process flow diagram;
Fig. 3 is a sampled signal line connection layout.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
As shown in Figure 1, the SF6 gas density relay check analysis device in the utility model comprises that device main frame 1, electric mainboard 2, sampled signal line 3, connection tracheae 4, densitometer gas circuit access port 5, temperature sensor 6, pressure transducer 7, access port valve 8, standby cylinder 9, standby cylinder valve door 10, adjusting cylinder 11, trimming handle 12, keyboard 13, display 14, printer 15, self-contained battery 16, communication module 17 are host computer 19 management of realization data and put on record after verification is finished.Dispose the data converter 20 and the computing machine 19 of communicating by letter in addition with outside host computer 19; The device host power supply provide by external power source 18 or at the scene when inconvenience provide by self-contained battery 16, when verification, need connect on-the-spot by the SF6 gas density relay 21 of verification or connect tensimeter 22 in addition.
Generally,, only maybe can not provide under the situation of AC power, just power by self-contained battery 16 in the on-the-spot inconvenience of verification by external power source 18 supply 220V alternating currents.After installing main frame 1 as shown in Figure 3 and being set up gas circuit by verification density monitor 21 and be connected, as shown in Figure 4 by being linked to each other with electrical equipment mainboard 2 on the device main frame 1 by four crocodile clips 28 of design on sampled signal line 3 (the warning connecting line of one group of black, one group of redness for the locking connecting line) by the electric terminal on the verification density monitor 21.As shown in Figure 3 by connected by design by the air-path interface on the verification density monitor 21 crossover sub 27 on the tracheae 4, connector 26, on from latching connector 25, tracheae 24, link to each other from latching connector 23, density monitor access port 5 and device main frame 1 down.Then connect and go up the external environment condition that external power source 18 backs so just provide verification.Start back by the keyboard 13 on the device main frame 1 and display 14 according to being carried out the parameter setting by the parameter of 21 nominals of verification density monitor.Before verification, regulate cylinder 11 and make being arrived by the rated operating pressure of verification density monitor 21 of being connected by force value in verification density monitor 21 gas circuits (can on display 14, read) with trimming handle 12 fine settings.Keyboard on the operating means main frame 1 13 beginning verification sampling work then.Fine setting rocking bar 12 descends pressure to come the process of simulated leakage.When being reduced to, pressure fine setting can hear that sending about five seconds length by device main frame 1 " drips " sound after being lower than by the alarm threshold of 21 nominals of verification density monitor.This moment, expression was moved by the warning contact of verification density monitor 21.Whether prompting warning verification is qualified on the display 14 (must satisfy two conditions, one can be moved by the locking contact 29 of verification density monitor 21 when pressure is lower than near the alarm threshold, and they two should be within by 21 nominal accuracy scopes of verification density monitor through its force value when action takes place of sampling).The process that continues 12 simulated leakages of fine setting rocking bar drops to pressure to be lower than can be heard behind the locking thresholding of 21 nominals of verification density monitor that sending about five seconds length once more by device main frame 1 " drips " sound.This moment, expression was moved by the locking contact of verification density monitor 21.Whether prompting locking verification is qualified on the display 14 (must satisfy two conditions, one can be moved by the locking contact 30 of verification density monitor 21 when pressure is lower than near the locking thresholding, and they two should be within by 21 nominal accuracy scopes of verification density monitor through its force value when action takes place of sampling).Whether prompting needs to print check results by printer 15 on this moment display 14, print and this check results of putting on record after the verification end-of-job.
The principle of work of SF6 gas density relay check analysis instrument of the present utility model: SF6 gas density relay check analysis device is providing external power source or is using the operation of the form implement device main frame of self-contained battery power supply at the scene under the non-transformer situation.The device main frame is after connecting structure gas circuit path and warning and locking sampled signal loop, behind standby cylinder valve door of device for opening main frame and access port valve, can adjust by the fine setting rocking bar that to offer by the gaseous tension of verification density monitor be the rated operating pressure value of density monitor institute nominal, thereby further after the device host-initiated enters the interface, enter the function corresponding menu, set by the rated operating pressure of verification density monitor by the keyboard of design on the device host panel, the alarm threshold value, the latching door limit value, accuracy class, residing switchyard station number, begin the verification state by the affirmation button after the density monitor utensil numbering.Can simulate SF6 gas by the fine setting rocking bar this moment and leak the decline process, when pressure drop to set by the alarm threshold of verification density monitor nominal near the time and cause SF6 gas density relay internal alarm junction closure, this moment, the device main frame will be by sampling lead sampling that is connected with density monitor and pressure value and the Temperature numerical of noting this moment, and through the density value when being considered by the accuracy class of verification density monitor whether to be moved by the density monitor of verification within the accuracy rating that is allowed, if within it, illustrate that this density monitor is satisfying actual requirement aspect the detection of warning contact and the action.
Further fine setting up to pressure drop to set by the locking thresholding of verification density monitor nominal near the time and cause the inner locking junction closure of SF6 gas density relay, this moment, the device main frame will be by sampling lead sampling that is connected with density monitor and pressure value and the Temperature numerical of noting this moment, and the density value when being considered by the accuracy class of verification density monitor whether to be moved by the density monitor of verification is within the accuracy rating that is allowed, if within it, illustrate that this density monitor is satisfying actual requirement aspect the detection of locking contact and the action.
Above being judged of carrying out by the verification of verification density monitor, needing only alarm detection and action or locking detection and action when installing the automatic analysis of main frame and judging has one not meet the demands, illustrate that this density monitor is underproof, no matter the device main frame is somebody's turn to do whether the result of verification is printed or do not printed to qualified can control by the mode of operation keyboard by the user by the density monitor of verification.
Claims (5)
1, sulfur hexafluoride gas density relay check analysis device comprises electric mainboard, regulates cylinder and density monitor, it is characterized in that described device further comprises:
Host computer is connected with described electric mainboard, is used for gathering and analyze temperature, pressure value and the check results data of storing on the electric mainboard of described device, also is used to store the nominal parameter by the verification density monitor;
Communication module is connected between described host computer and the electric mainboard, is used to select, control and set up the communication port between electric mainboard and host computer or the external detection equipment.
Data converter is connected between described communication module and the host computer, is used for electric mainboard is carried out Data Format Transform through the data of communication module and host computer or external detection equipment, effectively transmits.
2, sulfur hexafluoride gas density relay check analysis device according to claim 1 is characterized in that described device further comprises:
Some joints are connected with described electric mainboard, form the gas circuit path of described device, make up the gas circuit environment.
3, sulfur hexafluoride gas density relay check analysis device according to claim 2 is characterized in that described joint comprises:
From latching connector, be connected down with described density monitor access port;
Connector links to each other from latching connector down with described;
Tracheae, two ends all link to each other with described connector;
Crossover sub links to each other with described density monitor.
4, sulfur hexafluoride gas density relay check analysis device according to claim 1 is characterized in that described device further comprises:
Temperature sensor is connected described electric mainboard and by between the verification density monitor, is used for responding to offer by the temperature variations of verification density monitor gas circuit path;
Pressure transducer is connected between described electric mainboard and the described adjusting cylinder, is used for responding to offer by the pressure changing of verification density monitor gas circuit path.
5, sulfur hexafluoride gas density relay check analysis device according to claim 2 is characterized in that described device further comprises:
Standby cylinder links to each other with described densitometer air-path interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042680 CN2906595Y (en) | 2006-06-12 | 2006-06-12 | Sulfur hexafluoride gas density relay check analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042680 CN2906595Y (en) | 2006-06-12 | 2006-06-12 | Sulfur hexafluoride gas density relay check analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN2906595Y true CN2906595Y (en) | 2007-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620042680 Expired - Fee Related CN2906595Y (en) | 2006-06-12 | 2006-06-12 | Sulfur hexafluoride gas density relay check analyzer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841282A (en) * | 2012-09-19 | 2012-12-26 | 宁夏电力公司电力科学研究院 | Software compensation type all-temperature SF 6 gas density relay check device |
| CN103954530A (en) * | 2012-07-30 | 2014-07-30 | 常兴 | Device for measuring moisture and density of SF6 gas in SF6 electrical equipment |
| CN104375082A (en) * | 2014-11-04 | 2015-02-25 | 广州供电局有限公司 | Intelligent SF6 density relay calibration device and method |
| CN109521360A (en) * | 2018-12-28 | 2019-03-26 | 广东电网有限责任公司 | Relay contact signal detection apparatus and system |
| WO2021218287A1 (en) * | 2020-04-29 | 2021-11-04 | 上海乐研电气有限公司 | Gas density relay with sealing performance self-checking function, and implementation method therefor |
-
2006
- 2006-06-12 CN CN 200620042680 patent/CN2906595Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954530A (en) * | 2012-07-30 | 2014-07-30 | 常兴 | Device for measuring moisture and density of SF6 gas in SF6 electrical equipment |
| CN102841282A (en) * | 2012-09-19 | 2012-12-26 | 宁夏电力公司电力科学研究院 | Software compensation type all-temperature SF 6 gas density relay check device |
| CN104375082A (en) * | 2014-11-04 | 2015-02-25 | 广州供电局有限公司 | Intelligent SF6 density relay calibration device and method |
| CN109521360A (en) * | 2018-12-28 | 2019-03-26 | 广东电网有限责任公司 | Relay contact signal detection apparatus and system |
| WO2021218287A1 (en) * | 2020-04-29 | 2021-11-04 | 上海乐研电气有限公司 | Gas density relay with sealing performance self-checking function, and implementation method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20110612 |