CN2886583Y - A device for automatically detecting extent of electrification in transformer oil - Google Patents
A device for automatically detecting extent of electrification in transformer oil Download PDFInfo
- Publication number
- CN2886583Y CN2886583Y CN 200620082408 CN200620082408U CN2886583Y CN 2886583 Y CN2886583 Y CN 2886583Y CN 200620082408 CN200620082408 CN 200620082408 CN 200620082408 U CN200620082408 U CN 200620082408U CN 2886583 Y CN2886583 Y CN 2886583Y
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- CN
- China
- Prior art keywords
- oil
- guide
- resistance
- nut
- pump nozzle
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- Expired - Lifetime
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Abstract
The utility model provides an automatic checkout device with electrical scale for the transformer oil, which comprises a rack, an oiling device, an oil nipple mounted on the rack capable of moving up and down and a testing panel located on the under of the oil nipple capable of rotating horizontally, wherein the oil nipple is connected with the oiling device through an oil conducting pipe. The utility model is characterized in that a plurality of testing heads are provided on the same circle of the testing panel, the testing panel and the testing heads are all conductive body, an oil lead is provided on the middle of the testing head that is anastomotic with the oil nipple and a layer of filter paper is crosswise provided in the oil lead. A monolithic, an A/D switch and a control module are additionally provided, wherein the input end of the monolithic is connected with the signal output terminal provided on the signal testing panel through the A/D switch and the control module, the output end of the monolithic is connected respectively with the oiling device and a driving device that controls the oil nipple to move up and down and controls the testing panel to horizontally rotate through the control module. The entire testing process is all intelligentized and need no hand operation, thereby accurate and efficient in measuring.
Description
Affiliated technical field
The utility model provides a kind of transformer oil electrified degree apparatus for automatically measuring, belongs to the electric measuring instrument technical field.
Background technology
The safe operation of oil-filled power transformer is the important topic that power supply department is faced.Because the insulating property of transformer oil are subjected to the influence of several factors, such as moisture, impurity, temperature, the charged degree of oil itself etc. for guaranteeing the transformer safe and stable operation, need instant its every index of correlation that detects.Wherein, owing to the friction between transformer oil and transformer inwall and the inner insulation material produces electric charge, promptly insulating oil is charged, thereby causes its insulating property to reduce, and influences the safe operation of transformer, more and more is subject to people's attention.How to know the charged degree of transformer insulation oil, many methods are arranged both at home and abroad, as pipe round-robin method, circulating injection method, siphonage, " mini " electrostatic test method etc.,, also inequality between the whole bag of tricks to the measurement result of same insulating oil owing to principle, evaluation method difference." mini " electrostatic test method is easy, easy-to-use, measures accurately, and domestic existing employing, but all be manual operations, need to repeat manual sampling, the manual compression test, and manually read the measuring current data and calculated, process is loaded down with trivial details, and efficient is lower.
The utility model content
The transformer oil electrified degree automatic detection device that the purpose of this utility model provides a kind ofly can overcome above-mentioned defective, measure accurately, testing efficiency is high.Its technology contents is:
Comprise frame, oiling device, be installed in the pump nozzle that can move up and down on the frame and be positioned at the test panel that can horizontally rotate under the pump nozzle, wherein pump nozzle connects oiling device through oil guide pipe, it is characterized in that: the same circumference of test panel is provided with a plurality of measuring heads, test panel and measuring head are electric conductor, the centre of measuring head is provided with the oil duct that matches with pump nozzle, laterally be provided with one deck filter paper in the oil duct, set up single-chip microcomputer, A/D converter and control module, wherein the input end of single-chip microcomputer is successively through A/D converter, control module connects the signal output terminal that is arranged on the test panel, and its output terminal connects oiling device respectively and controls pump nozzle through control module and moves up and down, the drive unit that the control test panel horizontally rotates.
Described transformer oil electrified degree automatic detection device, oiling device comprises vacuum pump, air compressor machine, oil-storing cup, wherein the inlet of oil-storing cup connects vacuum pump, air compressor machine and oil suction operation valve respectively by the road, oil sample is surveyed in oil suction operation valve reception, and its output terminal that is positioned at oil-storing cup bottom operation valve after tested connects oil guide pipe.
Described transformer oil electrified degree automatic detection device, frame is provided with three layers of back up pad, between top layer and middle level back up pad, be fixed with guide, drive unit comprises vertical drive that is installed on the top layer back up pad and the electric rotating machine that is installed on the back up pad of middle level, pump nozzle is installed in the guide and is moved up and down by the vertical drive driving, test panel is fixed on the output shaft of electric rotating machine, holder is provided with insulating mat between test panel and the base layer support plate around its bottom on the base layer support plate.
Described transformer oil electrified degree automatic detection device, vertical drive adopts motor, the terminal screw rod middle with being positioned at guide of its motor shaft fixedlyed connected, screw rod be positioned at guide, the guide nut thread that is sleeved on the screw rod connects, the guide nut is provided with backing pin, be vertically arranged with guide groove on the corresponding guide with it, the backing pin level passes guide groove, and along with moving up and down in the guide groove inter-sync of guide nut moves up and down, pump nozzle is installed in the below that is positioned at the guide nut in the guide, vertically be provided with the oil duct that runs through in the middle of it, fixedly connected with an end of oil guide pipe in the top of oil duct, the other end of oil guide pipe passes and connects oil-storing cup by being arranged on vertical fluting on guide and the guide nut, the bottom of pump nozzle passes the middle level back up pad, be pressed with spring between the upper surface of pump nozzle and the guide nut, be pressed with the bootstrapping spring between its lower surface and the middle level back up pad.
Described transformer oil electrified degree automatic detection device, in the middle of comprising, measuring head is provided with housing screw that runs through oil duct and the nut that is threaded with housing screw, it is with holes that the bottom of nut is taper, constitute oil outlet, crimping place that is positioned at housing screw lower surface and nut at oil duct is provided with filter paper and O-ring seal.
Described transformer oil electrified degree automatic detection device, control module comprise amplifier IC
1～2, resistance R
1～9, adjustable resistance P
1～2And relay K
1～6, amplifier IC wherein
1In-phase input end through resistance R
8Ground connection, its reverse input end is through resistance R
9Connect the signal output terminal that is arranged on the test panel, its output terminal is through resistance R
6Meet amplifier IC
2Reverse inter-input-ing ending grounding, its in-phase input end connects through resistance R
7Meet adjustable resistance P
1Adjustable end, adjustable resistance P
1In addition two ends correspondence through resistance R
2Connect positive supply, through resistance R
3Connect negative supply, amplifier IC
2Output terminal successively through adjustable resistance P
2And resistance R
4Ground connection, adjustable resistance P
2And resistance R
4The junction as signal output part through A/D converter U
2Meet single-chip microcomputer U
1Input end TXD, single-chip microcomputer U
1Output terminal P
10～14Pin, P
16The pin correspondence is succeeded electrical equipment K
1～6Coil, relay K
1～6Contact be serially connected in respectively in the power circuit of vacuum pump, air compressor machine, oil suction operation valve, test operation valve, motor, motor.
Its principle of work is: during test, the Single-chip Controlling oiling device is given the pump nozzle oiling, test panel rotates the bottom that is positioned at pump nozzle after measuring head rotates to the test position just, pump nozzle descends tight with the oil duct at measuring head center, combination securely, when oil sample at the uniform velocity flows through measuring head and filter paper produce friction, just produce faint electric signal, test panel and measuring head are electric conductor, electric signal just outputs to control module by the signal output terminal that is installed on the test panel, output to single-chip microcomputer by control module after with the signal processing and amplifying, after the single-chip microcomputer computing, can obtain desired transformer oil electrified degree value.A measuring head end of test (EOT), pump nozzle lifts, and the test panel rotation makes next measuring head be positioned at the test position, repeats said process, and the rest may be inferred.
The utility model compared with prior art, whole test process is all intelligent, need not manual operations and artificial calculating, measures accurately, testing efficiency is high.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of middle test panel embodiment illustrated in fig. 1;
Fig. 3 is the structural representation that middle measuring head embodiment illustrated in fig. 1 amplifies;
Fig. 4 is that control module reaches the circuit diagram that is connected with single-chip microcomputer, A/D converter in the present embodiment.
Embodiment
1, vacuum pump 2 oil samples 3 to be measured, fluting 4, frame 5, gib screw 6, air compressor machine 7, oil suction operation valve 8, pipeline 9, oil-storing cup 10, test operation valve 11, back up pad 12, motor 13, guide 14, screw rod 15, guide nut 16, oil guide pipe 17, spring 18, oil duct 19, bootstrapping spring 20, guide groove 21, backing pin 22, pump nozzle 23, rubber ring 24, motor 25, test panel 26, output shaft 27, insulating mat 28, measuring head 29, signal output terminal 30, housing screw 31, nut 32, oil duct 33, O-ring seal 34, filter paper 35, oil outlet
Among the embodiment shown in Fig. 1～3: frame 4 is provided with three layers of back up pad 11, vacuum pump 1, air compressor machine 6, oil-storing cup 9, test operation valve 10, motor 12 are installed on the top layer back up pad 11, motor 24, oil suction operation valve 7 are installed on the middle level back up pad 11, wherein the inlet of oil-storing cup 98 connects vacuum pump 1, air compressor machine 6 and oil suction operation valve 7 respectively by the road, oil samples 2 are surveyed in oil suction operation valve 7 reception, and its output terminal that is positioned at oil-storing cup 9 bottoms operation valve 10 after tested connects oil guide pipe 16.Between top layer and middle level back up pad 11, be fixed with guide 13, the motor shaft end of motor 12 is fixedlyed connected with the screw rod 14 in the middle of being positioned at guide 13, screw rod 14 be positioned at guide 13, the guide nut 15 that is sleeved on the screw rod 14 is threaded, guide nut 15 is provided with backing pin 21, be vertically arranged with guide groove 20 on the corresponding guide 13 with it, backing pin 11 levels pass guide groove 20, and along with moving up and down in guide groove 20 inter-syncs of guide nut 15 moves up and down, pump nozzle 22 is installed in the below that is positioned at guide nut 15 in the guide 13, vertically be provided with the oil duct 18 that runs through in the middle of it, fixedly connected with an end of oil guide pipe 16 in the top of oil duct 18, the other end of oil guide pipe 16 passes and connects oil-storing cup 9 by being arranged on vertical fluting 3 on guide 13 and the guide nut 15, the bottom of pump nozzle 22 passes middle level back up pad 11, be pressed with spring 17 between the upper surface of pump nozzle 22 and the guide nut 15, be pressed with bootstrapping spring 19 between its lower surface and the middle level back up pad 11.Test panel 25 is fixed on the output shaft 26 of electric rotating machine 24, holder is on base layer support plate 11 around its bottom, be provided with insulating mat 27 between test panel 25 and the base layer support plate 11, the same circumference of test panel 25 is provided with 4 measuring heads 28, test panel 25 and measuring head 28 are electric conductor, in the middle of including, each measuring head 28 is provided with housing screw 30 that runs through oil duct 32 and the nut 31 that is threaded with housing screw 30, it is with holes that the bottom of nut 31 is taper, constitute oil outlet 35, crimping place that is positioned at housing screw 30 lower surfaces and nut 31 at oil duct 32 is provided with filter paper 34 and O-ring seal 33, the top of oil duct 32 and pump nozzle 22 match, and its signal output terminal 29 is arranged on the test panel 25 to the control module output detection signal.
In the embodiment shown in fig. 4: control module comprises amplifier IC
1～2, resistance R
1～9, adjustable resistance P
1～2And relay K
1～6, amplifier IC wherein
1In-phase input end through resistance R
8Ground connection, its reverse input end is through resistance R
9Connect the signal output terminal 29 that is arranged on the test panel 25, its output terminal is through resistance R
6Meet amplifier IC
2Reverse inter-input-ing ending grounding, its in-phase input end connects through resistance R
7Meet adjustable resistance P
1Adjustable end, adjustable resistance P
1In addition two ends correspondence through resistance R
2Connect positive supply, through resistance R
3Connect negative supply, amplifier IC
2Output terminal successively through adjustable resistance P
2And resistance R
4Ground connection, adjustable resistance P
2And resistance R
4The junction as signal output part through A/D converter U
2Meet single-chip microcomputer U
1Input end TXD, single-chip microcomputer U
1Output terminal P
10～14Pin, P
16The pin correspondence is succeeded electrical equipment K
1～6Coil, relay K
1～6Contact be serially connected in respectively in the power circuit of vacuum pump 1, air compressor machine 6, oil suction operation valve 7, test operation valve 10, motor 12, motor 24.
During test, single-chip microcomputer U
1Pilot relay K
1And relay K
3Action, oil suction operation valve 7 is opened, and vacuum pump 1 is started working, and sample to be tested oil 2 is sucked oil-storing cup 9, single-chip microcomputer U
1Monitor the stipulated time, pilot relay K
1And relay K
3Action, oil suction operation valve 7 is closed, and vacuum pump 1 stops oil suction; Single-chip microcomputer U
1Pilot relay K
2Action starts air compressor machine 6 and starts working, and the pressurized air of generation acts on the oily plane of oil-storing cup 9; Single-chip microcomputer U then
1Pilot relay K
6Action starts electric rotating machine 24 and drives test panels 25 and rotate, and measuring head 28 is forwarded to be positioned at the test position of pump nozzle 22 bottoms to stop single-chip microcomputer U
1Pilot relay K again
5Action starts lifting motor 12, and screw rod 14 is with the motor shaft rotation, because backing pin 21 and the vertically guide effect of guide groove 20 make guide nut 15 to move down in guide 13.When moving down, guide nut 15 is through spring 17 compressing pump nozzles 22, pump nozzle 22 is descended be pressed on the measuring head 28 with the oil duct 32 at measuring head 28 centers closely, combine securely, this moment single-chip microcomputer U
1Pilot relay K
4Action, open test operation valve 10, pump nozzle 22 beginning oilings in oil duct 32, filter paper 34 when oil sample at the uniform velocity flows through measuring head 28 and in the oil duct 32 produces friction, just produce faint electric signal, because test panel 25 is electric conductor with measuring head 28, electric signal just outputs to control module by the signal output terminal 29 that is installed on the test panel 25, outputs to A/D converter U by control module after with the signal processing and amplifying
2, through single-chip microcomputer U
1After the sampling computing, can obtain desired transformer oil electrified degree value.Measuring head 28 end of test (EOT), pump nozzle 22 lifts, and test panel 25 rotations make next measuring head 28 be positioned at the test position, repeat said process, and the rest may be inferred.
Claims (6)
1, a kind of transformer oil electrified degree automatic detection device, comprise frame (4), oiling device, be installed in the pump nozzle (22) that can move up and down on the frame (4) and be positioned at the test panel (25) that can horizontally rotate under the pump nozzle (22), wherein pump nozzle (22) connects oiling device through oil guide pipe (16), it is characterized in that: the same circumference of test panel (25) is provided with a plurality of measuring heads (28), test panel (25) and measuring head (28) are electric conductor, the centre of measuring head (28) is provided with the oil duct (32) that matches with pump nozzle (22), laterally be provided with one deck filter paper (34) in the oil duct (32), set up single-chip microcomputer U
1, A/D converter U
2And control module, wherein single-chip microcomputer U
1Input end successively through A/D converter U
2, control module connects the signal output terminal (29) that is arranged on the test panel (25), its output terminal connects oiling device respectively and control pump nozzle (22) moves up and down, controls the drive unit that test panel (25) horizontally rotates through control module.
2, transformer oil electrified degree automatic detection device as claimed in claim 1, it is characterized in that: oiling device comprises vacuum pump (1), air compressor machine (6), oil-storing cup (9), wherein the inlet of oil-storing cup (9) respectively by the road (8) connect vacuum pump (1), air compressor machine (6) and oil suction operation valve (7), oil sample (2) is surveyed in oil suction operation valve (7) reception, and its output terminal that is positioned at oil-storing cup (9) bottom operation valve (10) after tested connects oil guide pipe (16).
3. transformer oil electrified degree automatic detection device as claimed in claim 1, it is characterized in that: frame (4) is provided with three layers of back up pad (11), between top layer and middle level back up pad (11), be fixed with guide (13), drive unit comprises the vertical drive (12) that is installed on the top layer back up pad (11) and is installed in electric rotating machine (24) on the middle level back up pad (11), pump nozzle (22) is installed in the guide (13) and is moved up and down by vertical drive (12) driving, test panel (25) is fixed on the output shaft (26) of electric rotating machine (24), holder is provided with insulating mat (27) between test panel (25) and the base layer support plate (11) around its bottom on base layer support plate (11).
4, transformer oil electrified degree automatic detection device as claimed in claim 3, it is characterized in that: vertical drive (12) adopts motor, the terminal screw rod (14) middle with being positioned at guide (13) of its motor shaft fixedlyed connected, screw rod (14) be positioned at guide (13), the guide nut (15) that is sleeved on the screw rod (14) is threaded, guide nut (15) is provided with backing pin (21), be vertically arranged with guide groove (20) on the corresponding guide with it (13), backing pin (21) level passes guide groove (20), and along with moving up and down in guide groove (20) inter-sync of guide nut (15) moves up and down, pump nozzle (22) is installed in the below that is positioned at guide nut (15) in the guide (13), vertically be provided with the oil duct (18) that runs through in the middle of it, fixedly connected with an end of oil guide pipe (16) in the top of oil duct (18), the other end of oil guide pipe (16) passes and connects oil-storing cup (9) by being arranged on vertical fluting (1) on guide (13) and the guide nut (15), the bottom of pump nozzle (22) passes middle level back up pad (11), be pressed with spring (17) between the upper surface of pump nozzle (22) and the guide nut (15), be pressed with bootstrapping spring (19) between its lower surface and the middle level back up pad (11).
5, transformer oil electrified degree automatic detection device as claimed in claim 1, it is characterized in that: be provided with housing screw (30) that runs through oil duct (32) and the nut (31) that is threaded with housing screw (30) in the middle of measuring head (28) comprises, it is with holes that the bottom of nut (31) is taper, constitute oil outlet (35), crimping place that is positioned at housing screw (30) lower surface and nut (31) at oil duct (32) is provided with filter paper (34) and O-ring seal (33).
6, transformer oil electrified degree automatic detection device as claimed in claim 1 is characterized in that: control module comprises amplifier IC
1～2, resistance R
1～9, adjustable resistance P
1～2And relay K
1～6, amplifier IC wherein
1In-phase input end through resistance R
8Ground connection, its reverse input end is through resistance R
9Connect the signal output terminal (29) that is arranged on the test panel (25), its output terminal is through resistance R
6Meet amplifier IC
2Reverse inter-input-ing ending grounding, its in-phase input end connects through resistance R
7Meet adjustable resistance P
1Adjustable end, adjustable resistance P
1In addition two ends correspondence through resistance R
2Connect positive supply, through resistance R
3Connect negative supply, amplifier IC
2Output terminal successively through adjustable resistance P
2And resistance R
4Ground connection, adjustable resistance P
2And resistance R
4The junction as signal output part through A/D converter U
2Meet single-chip microcomputer U
1Input end TXD, single-chip microcomputer U
1Output terminal P
10～14Pin, P
16The pin correspondence is succeeded electrical equipment K
1～6Coil, relay K
1～6Contact be serially connected in respectively in the power circuit of vacuum pump (1), air compressor machine (6), oil suction operation valve (7), test operation valve (10), motor (12), motor (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082408 CN2886583Y (en) | 2006-03-26 | 2006-03-26 | A device for automatically detecting extent of electrification in transformer oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082408 CN2886583Y (en) | 2006-03-26 | 2006-03-26 | A device for automatically detecting extent of electrification in transformer oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886583Y true CN2886583Y (en) | 2007-04-04 |
Family
ID=37961672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620082408 Expired - Lifetime CN2886583Y (en) | 2006-03-26 | 2006-03-26 | A device for automatically detecting extent of electrification in transformer oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886583Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033170A (en) * | 2009-09-29 | 2011-04-27 | 华东电力试验研究院有限公司 | Online measuring device of charge density of oil electrification in transformer |
| CN106249065A (en) * | 2016-08-02 | 2016-12-21 | 江西理工大学 | A kind of analogue measurement device |
-
2006
- 2006-03-26 CN CN 200620082408 patent/CN2886583Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033170A (en) * | 2009-09-29 | 2011-04-27 | 华东电力试验研究院有限公司 | Online measuring device of charge density of oil electrification in transformer |
| CN102033170B (en) * | 2009-09-29 | 2015-05-06 | 华东电力试验研究院有限公司 | Online measuring device of charge density of oil electrification in transformer |
| CN106249065A (en) * | 2016-08-02 | 2016-12-21 | 江西理工大学 | A kind of analogue measurement device |
| CN106249065B (en) * | 2016-08-02 | 2019-01-18 | 江西理工大学 | A kind of analogue measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |