CN102914488A - Online monitoring device for mechanic-electrical integrated SF6 density moisture - Google Patents
Online monitoring device for mechanic-electrical integrated SF6 density moisture Download PDFInfo
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- CN102914488A CN102914488A CN 201110222878 CN201110222878A CN102914488A CN 102914488 A CN102914488 A CN 102914488A CN 201110222878 CN201110222878 CN 201110222878 CN 201110222878 A CN201110222878 A CN 201110222878A CN 102914488 A CN102914488 A CN 102914488A
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Abstract
The invention discloses an online monitoring device for mechanic-electrical integrated SF6 density moisture. The mechanic-electrical integrated SF6 density moisture comprises an electronic type density moisture module, a mechanical density module, a joint mechanism and a detection module, wherein the electronic density moisture module, the detection module and the mechanical density module are integrated by using the tailored joint mechanism, and thus the convenience for operation during use is realized. The flexibility and the safety of operation and use are improved by using a self-closed needle valve arranged inside a detection interface of the joint mechanism. Meanwhile, the electronic density moisture module and the mechanical density module are combined for online monitoring; and two paths of monitoring are independently transmitted without mutual interference, and thus the accuracy in detection and the reliability of the detection result are improved. A mechanical dial and digital display provide visual read for operators; and the electronic density moisture module can also be remotely controlled and monitored according to the requirement.
Description
Technical field:
The present invention relates to SF6 gas controlling device in the high-voltage electrical equipment, relate in particular to the little water on-Line Monitor Device of electromechanical SF6 gas density of little water number in temperature, density and the gas of monitoring SF6 gas in the operating high-voltage electrical equipment.
Background technology:
Along with operation of power networks to transformer station's improving constantly with the security of high-voltage electrical equipment, reliability, SF6 is as a kind of safely and effectively insulation, arc-extinguishing medium, at home and abroad be widely used in the high-voltage electrical equipment, especially in electric system, application quantity has reached 95% of production.But, since electric of SF6 prepare make, the factors such as the mass discrepancy such as installation and material aging, the increase of moisture is potential risk in SF6 Leakage Gas and the gas.Moisture has increased insulation and the arc extinguishing ability of electrical equipment serious deteriorated in SF6 Leakage Gas and the gas, brings hidden trouble for the safe operation of equipment.In power supply industry, Moisture high UCL in the leakage of SF6 γ-ray emission or the gas in the high-tension switch gear happens occasionally because failing in time to be monitored and process the switchgear blast that causes.Thereby SF6 gas-condition in the high-tension switch gear is carried out Real-Time Monitoring, data exception report to the police and carry out the lock-in control tool and be of great significance.
Two kinds of detection methods of many uses in the little water detection technique of existing SF6 density, the first are to adopt the method for micro-water content in the on-line monitoring SF6 density offline inspection SF6 gas, in testing process, owing to needing venting, tonifying Qi, operation easier is large, dangerous, and the data of detection are inaccurate.The second is the method that adopts little water number in while on-line monitoring SF6 density and the SF6 gas, use adaptor three-way joint Connection Density table and little water pick-up unit, this method has increased the gas leakage probability, the deteriorated insulating property of equipment, and because the detecting element of little water placing in the middle of the gas to be measured truly not in the gas, resulting data can't truly reflect the actual moisture in the equipment.
Above two kinds of employed equipment of method, be density and little water pick-up unit respectively is integrated, all need to install three-way connection or other adapter, therefore, increased the gas leakage probability, and the Sensitive Apparatuses such as electronic sensor owing to the increase of pipeline cause the data of surveying inaccurate, easily produce abnormal alarm.
Summary of the invention:
In order to address the above problem, the invention provides a kind of easy to operate, safety, accuracy of detection is high, the little water on-line measuring device of the reliable electromechanical SF6 of monitoring result density.
Technical scheme of the present invention is: the little water on-Line Monitor Device of electromechanical SF6 density comprises
Detection module comprises test section and transport unit, and test section stretches in the gas, and detecting SF6 density and little water number in the gas, transport unit is used for sending the testing result of test section to electronic type density little water module with the form of electric signal;
The little water module of electronic type density comprises driver element, input wires terminal and the first output wiring terminal, and the input wires terminal is electrically connected with the transport unit of detection module, and the electric signal of reception is transported to the first output wiring terminal after over-drive unit is processed;
The mechanical type density module comprises an inlet channel, is used for the gas that enters in the inlet channel is processed, and SF6 density value in the demonstration gas, when reaching default density value, can transfer signals to the second output wiring terminal, and then the control relevant device moves and reports to the police;
Joint mechanism comprises and detects interface, intake interface and the interface of giving vent to anger that detect the test section that interface is used for the installation and measuring module, the interface of giving vent to anger links to each other with the inlet channel of mechanical type density module, and intake interface is connected on the gas circuit of sending out standby to be monitored.
The detection interface inside of described joint mechanism is equipped with the self-closed type needle valve, and self-closed detects interface after dismantling separately for detection of module.
The test section of described detection module comprises electronic pressure sensor, electronic type humidity sensor and electronic temperature sensor.
The little water module of described electronic type density also comprises display unit, and described display unit is used for showing corresponding gas SF6 density value, little water number and the temperature value that draws after driver module is processed.
Described mechanical type density module also comprises temperature compensation mechanism, dial plate, pointer, driving mechanism and switching mechanism, the inlet end of described temperature compensation mechanism links to each other with inlet channel, the other end is connected to driving mechanism, the switching mechanism that matches with driving mechanism is installed on the described driving mechanism, the pointer that is arranged on the dial plate is installed on the axle of driving mechanism, and pointer indication numerical value is the density value through SF6 in the corresponding gas after the temperature compensation mechanism compensation.
Described switching mechanism is mechanical linkage electronic relay structure, forms the dry contact that moves under the corresponding at least a different densities state.
Described switching mechanism forms the dry contact that moves under corresponding 3 kinds of different densities states.
Described temperature compensation mechanism is drawn a gas circuit by a high pressure resistant pipe, and this gas circuit uses needle valve to seal.
Described high pressure resistant pipe is connected to an end of the close driving mechanism of temperature compensation mechanism.
Beneficial effect of the present invention is: pick-up unit of the present invention uses special joint mechanism that the little water module of electronic type density, detection module and mechanical type density module is integrated, and is easy to operate during use.The inner self-closed type needle valve that arranges of the detection interface of joint mechanism has improved dirigibility and security that operation is used, with right, on-line monitoring is carried out in the two combination of the little water module of electronic type density and mechanical type density module, two-way monitoring individual transmission, non-interference has improved the accuracy of detection and the reliability of testing result.Machinery dial plate and numeral are shown as operating personnel provides intuitively reading, and the little water module of electronic type density can also be carried out Long-distance Control and supervision as required.
Description of drawings:
Fig. 1 is the front view of pick-up unit of the present invention;
Fig. 2 is the side view of the little water module of electronic type density among Fig. 1;
Fig. 3 is the side view of mechanical type density module among Fig. 1.
Embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, 2, 3, the little water on-Line Monitor Device of electromechanical SF6 density, comprise the little water module 100 of electronic type density, mechanical type density module 200, joint mechanism 300 and detection module 400, detection module 400 comprises test section and transport unit, test section stretches in the gas, detecting SF6 density and little water number in the gas, transport unit is used for sending the testing result of test section to electronic type density little water module 100 with the form of electric signal.Preferably, the test section of detection module 400 comprises electronic pressure sensor, electronic type humidity sensor and electronic temperature sensor.
The little water module 100 of electronic type density, comprise driver element 120, input wires terminal 110 and the first output wiring terminal 130, input wires terminal 110 is electrically connected with the transport unit of detection module 400, and the electric signal of reception is transported to the first output wiring terminal 130 after over-drive unit 120 is processed.Preferably, the little water module 100 of electronic type density also comprises display unit 140, and described display unit 140 is used for showing corresponding gas SF6 density value, little water number and the temperature value that draws after driver module 120 is processed.
Mechanical type density module 200, comprise an inlet channel 290, be used for processing entering in the inlet channel 290 gas, and SF6 density value in the demonstration gas, when reaching default density value, can transfer signals to the second outlet terminal in 280, and then the control relevant device moves and reports to the police.Preferably, mechanical type density module 200 also comprises temperature compensation mechanism 230, dial plate 210, pointer 220, driving mechanism 260 and switching mechanism 270, the inlet end of temperature compensation mechanism 230 links to each other with inlet channel 290, the other end is connected to driving mechanism 260, the switching mechanism 270 that matches with driving mechanism 260 is installed on the driving mechanism 260, the pointer 220 that is arranged on the dial plate 210 is installed on the axle of driving mechanism 260, and pointer 220 indication numerical value are the density value through SF6 in the corresponding gas after temperature compensation mechanism 230 compensation.Preferably, switching mechanism 270 is mechanical linkage electronic relay structure, forms the dry contact that moves under the corresponding at least a different densities state, is preferably formed the dry contact that moves under corresponding 3 kinds of different densities states.Temperature compensation mechanism 230 is drawn a gas circuit by a high pressure resistant pipe 250, and this gas circuit uses needle valve 240 to seal, and preferred high pressure resistant pipe 250 is connected to an end of the close driving mechanism 260 of temperature compensation mechanism 230.
Joint mechanism 300, comprise and detect interface 310, intake interface 320 and the interface 330 of giving vent to anger, detect the test section that interface 310 is used for installation and measuring module 400, the interface 330 of giving vent to anger links to each other with the inlet channel 290 of mechanical type density module 200, and intake interface 320 is connected on the gas circuit of equipment to be monitored.Preferably, the inside of the detection interface 310 of joint mechanism 300 is equipped with self-closed type needle valve 340, and self-closed detects interface 310 after dismantling separately for detection of module 400.
In order to make things convenient for operation and maintenance, the little water module 100 of the electronic type density of apparatus of the present invention and mechanical type density module 200 can be contained in respectively in the shell of two correspondences, case surface is provided with terminal box, the input and output terminal is installed in the terminal box, needle valve 240 is installed on the shell of mechanical type density module 200, use bolt or other bindiny mechanism to be connected and fixed between two shells, can split freely and make up with convenient.
Before the use, the intake interface 320 of joint mechanism 300 is linked to each other with the gas circuit of high-voltage electrical equipment, by the needle valve 240 of regulating on mechanical type density module 200 shells high humidity gas in the temperature compensation mechanism 230 is discharged, wait to manage and interiorly regulate aciculiform valve (8) sealing when all being the SF6 gas of standard humidity, the data that record this moment are the most accurate.During operation, the SF6 gaseous tension is delivered to the driving mechanism 260 of mechanical type density module 200, by 220 deflections of driving mechanism 260 steering needles.Detection module 400 detects temperature, pressure and the humidity of SF6 gas, electric signal is sent on the driver element 120 of the little water module 100 of electronic type density, and direction display unit 140 showed after driver element 120 was processed.When the SF6 gas leakage, the driving mechanism 260 of mechanical type density module 200 sends electric signal by driven wheel mechanism controls switching mechanism 270 and carries out low pressure alarming, driver element 120 pilot relays of the little water module 100 of electronic type density send alerting signal, riches all the way gives birth to signal as long as have in the two paths of signals, and system just can report to the police.If SF6 gas is further revealed, the driving mechanism 260 gauge tap mechanisms 270 of mechanical type density module 200 send block signal, driver element 120 pilot relays of the little water module 100 of electronic type density send block signal, as long as have any one the tunnel to produce block signal in the two paths of signals, system just can locking.Thereby guaranteed the reliability of electrical equipment safe operation.
Apparatus of the present invention use special joint mechanism 300 that the little water module 100 of electronic type density, detection module 400 and mechanical type density module 200 is integrated, and are easy to operate during use.The detection interface 310 inner self-closed type needle valves 340 that arrange of joint mechanism 300 have improved dirigibility and security that operation is used, simultaneously, on-line monitoring is carried out in the little water module 100 of electronic type density and 200 the two combination of mechanical type density module, two-way monitoring individual transmission, non-interference has improved the accuracy of detection and the reliability of testing result.Machinery dial plate and numeral are shown as operating personnel provides intuitively reading, and the little water module 100 of electronic type density can also be carried out Long-distance Control and supervision as required.
Above demonstration and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (9)
1. the little water on-Line Monitor Device of electromechanical SF6 density is characterized in that: comprise
Detection module comprises test section and transport unit, and test section stretches in the gas, and detecting SF6 density and little water number in the gas, transport unit is used for sending the testing result of test section to electronic type density little water module with the form of electric signal;
The little water module of electronic type density comprises driver element, input wires terminal and the first output wiring terminal, input terminal be electrically connected with the transport unit of detection module, the electric signal of reception is transported to the first output wiring terminal after over-drive unit is processed;
The mechanical type density module comprises an inlet channel, is used for the gas that enters in the inlet channel is processed, and SF6 density value in the demonstration gas, when reaching default density value, can transfer signals to the second output wiring terminal, and then the control relevant device moves and reports to the police;
Joint mechanism comprises and detects interface, intake interface and the interface of giving vent to anger that detect the test section that interface is used for the installation and measuring module, the interface of giving vent to anger links to each other with the inlet channel of mechanical type density module, and intake interface is connected on the gas circuit of equipment to be monitored.
2. on-Line Monitor Device according to claim 1, it is characterized in that: the detection interface inside of described joint mechanism is equipped with self-closed type aciculiform valve, for detection of module separately after the dismounting self-closed detect interface.
3. on-Line Monitor Device according to claim 1, it is characterized in that: the test section of described detection module comprises electronic pressure sensor, electronic type humidity sensor and electronic temperature sensor.
4. on-Line Monitor Device according to claim 1, it is characterized in that: the little water module of described electronic type density also comprises display unit, and described display unit is used for showing corresponding gas SF6 density value, little water number and the temperature value that draws after driver module is processed.
5. on-Line Monitor Device according to claim 1, it is characterized in that: described mechanical type density module also comprises temperature compensation mechanism, dial plate, pointer, driving mechanism and switching mechanism, the inlet end of described temperature compensation mechanism links to each other with inlet channel, the other end is connected to driving mechanism, the switching mechanism that matches with driving mechanism is installed on the described driving mechanism, the pointer that is arranged on the dial plate is installed on the axle of driving mechanism, and pointer indication numerical value is the density value through SF6 in the corresponding gas after the temperature compensation mechanism compensation.
6. on-Line Monitor Device according to claim 5, it is characterized in that: described switching mechanism is mechanical linkage electronic relay structure, forms the dry contact that moves under the corresponding at least a different densities state.
7. it is characterized in that according to claim 5 or 6 described on-Line Monitor Device: described switching mechanism forms the dry contact that moves under corresponding 3 kinds of different densities states.
8. on-Line Monitor Device according to claim 5, it is characterized in that: described temperature compensation mechanism is drawn a gas circuit by a high pressure resistant pipe, and this gas circuit uses needle valve to seal.
9. on-Line Monitor Device according to claim 8, it is characterized in that: described high pressure resistant pipe is connected to an end of the close driving mechanism of temperature compensation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110222878 CN102914488A (en) | 2011-08-05 | 2011-08-05 | Online monitoring device for mechanic-electrical integrated SF6 density moisture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110222878 CN102914488A (en) | 2011-08-05 | 2011-08-05 | Online monitoring device for mechanic-electrical integrated SF6 density moisture |
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| CN102914488A true CN102914488A (en) | 2013-02-06 |
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| CN 201110222878 Pending CN102914488A (en) | 2011-08-05 | 2011-08-05 | Online monitoring device for mechanic-electrical integrated SF6 density moisture |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198125A (en) * | 2014-09-10 | 2014-12-10 | 国家电网公司 | Sealing monitoring method for simulating sealing conditions of transformer bushing |
| CN106774073A (en) * | 2016-12-28 | 2017-05-31 | 国网江苏省电力公司检修分公司 | A kind of SF6 electrical equipments automatic air supply device long distance control system |
| CN110426315A (en) * | 2019-09-04 | 2019-11-08 | 上海乐研电气有限公司 | A kind of gas density relay and system of electromechanical integration |
| CN113586965A (en) * | 2021-06-04 | 2021-11-02 | 南方电网科学研究院有限责任公司 | SF in GIS pipeline6Mixed gas on-line inflating device |
| CN113758653A (en) * | 2021-09-09 | 2021-12-07 | 河南平高电气股份有限公司 | Method for monitoring SF6 density relay in real time and pre-judging air leakage |
-
2011
- 2011-08-05 CN CN 201110222878 patent/CN102914488A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198125A (en) * | 2014-09-10 | 2014-12-10 | 国家电网公司 | Sealing monitoring method for simulating sealing conditions of transformer bushing |
| CN106774073A (en) * | 2016-12-28 | 2017-05-31 | 国网江苏省电力公司检修分公司 | A kind of SF6 electrical equipments automatic air supply device long distance control system |
| CN110426315A (en) * | 2019-09-04 | 2019-11-08 | 上海乐研电气有限公司 | A kind of gas density relay and system of electromechanical integration |
| CN113586965A (en) * | 2021-06-04 | 2021-11-02 | 南方电网科学研究院有限责任公司 | SF in GIS pipeline6Mixed gas on-line inflating device |
| CN113758653A (en) * | 2021-09-09 | 2021-12-07 | 河南平高电气股份有限公司 | Method for monitoring SF6 density relay in real time and pre-judging air leakage |
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| DD01 | Delivery of document by public notice |
Addressee: Shanghai Oumiao Electric Power Monitoring Equipment Co.,Ltd. Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Shanghai Oumiao Electric Power Monitoring Equipment Co.,Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |