CN101640104B - On-line oil filter device of on-load tap-changer - Google Patents
On-line oil filter device of on-load tap-changer Download PDFInfo
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- CN101640104B CN101640104B CN2009101007609A CN200910100760A CN101640104B CN 101640104 B CN101640104 B CN 101640104B CN 2009101007609 A CN2009101007609 A CN 2009101007609A CN 200910100760 A CN200910100760 A CN 200910100760A CN 101640104 B CN101640104 B CN 101640104B
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- 229910045601 alloy Inorganic materials 0.000 claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 21
- 230000000007 visual effect Effects 0.000 claims abstract description 10
- 239000000446 fuel Substances 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 238000005202 decontamination Methods 0.000 abstract 1
- 230000003588 decontaminative effect Effects 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
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- 239000007943 implant Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The invention discloses an on-line oil filter device of an on-load tap-changer. Parts of a three-phase motor, an oil pump, an oil inlet and outlet joint, a filter element, and the like are inserted and connected onto a precise alloy valve block which is internally provided with an integral oil way in an embedded mode; an overflow valve and a vacuum pressure sensor form a dual protection structure for the whole oil way; a gas relief joint, a gas relief valve and an on-line oil filling valve are inserted on the precise alloy valve block and communicated with the interior oil way; oil sampling valves and viewing windows are arranged beside both a decontamination filter element and a dewatering filter element; an embedded high-performance special digital controller comprises a liquid crystal display and a Chinese menu and is provided with frequently-used functional keys and a simple and visual human-computer interface; and the on-line oil filter device is also provided with a heating temperature setting knob, a radiating temperature setting knob, a heater and a radiator. The invention effectively reduces sealing parts, improves the protection function under the conditions of faults and misoperations, realizes the functions of on-line gas relief and oil filling, is convenient for sampling and observing insulating oil and has good maneuverability and strong adaptive capacity to temperature environment factors.
Description
Technical field
The present invention relates to oil-filtering apparatus, especially relate to a kind of on-line oil filter device of on-load tap-changer.
Background technology
On-load tap changers of transformers is because of the frequent impurity such as producing free carbon and metal particle that switches, thus the dielectric strength of reduction circuit-breaker oil.On-line oil filter device of on-load tap-changer is mainly used in the circulating filtration of on-load tap changer insulating oil, free carbon in the oil and metal particle can be under the situation of the normal operation of voltage transformer system, removed in the shunting switch effectively and micro-moisture can be reduced, guarantee the puncture voltage and the useful life of oil, improve the fail safe and the reliability of on load tap changer work effectively, thereby reduce the interruption maintenance number of times, prolong the time between overhauls(TBO).
Though existing on-line oil filter device of on-load tap-changer can satisfy above-mentioned basic function, adopt pipeline to connect mostly but still exist between inner each parts of device, pipe joint seals difficulty more; Pressure protect disposal ability deficiency when the pressure anomaly situation appears in the device internal oil passages, misoperation easily causes device to damage; Do not possess friendly man-machine interface, intelligent degree is lower, and controllability is poor; Insulating oil is sampled and is observed constant; Defectives such as online deflation structure of no gas and online oil injection structure.
Summary of the invention
In order to overcome above-mentioned a series of defectives of conventional online oil-filtering apparatus, the object of the present invention is to provide a kind of on-line oil filter device of on-load tap-changer.
The technical solution used in the present invention is:
All elements comprise that three phase electric machine, oil pump, turnover oil joint, gas vent connection, online fuel feeding valve, gas vent valve, vacuum pressure sensor, overflow valve, pressure reduction relay, the valve that draws oil sample, visual window, Pressure gauge, the filter core that dewaters, the whole embedded plug-in mountings of removal of impurities filter core are connected on the numerical control machine-shaping Precise Alloy valve piece that is fixed in the stainless steel cabinet, in the Precise Alloy valve piece integral type oil circuit is arranged, the turnover of cabinet sidewall oil joint adopts the flanged (FLGD) flexible pipe of stainless steel directly to be connected with the oil inlet and outlet flange of the loaded tap switch oil chamber of transformer; It is characterized in that: show that the Pressure gauge of oil pump outlet real-time pressure is installed on the oil pump oil-out place of Precise Alloy valve piece; Overflow valve is in parallel with oil pump, is plugged on the Precise Alloy valve piece, and the inlet port place of oil pump is provided with the vacuum pressure sensor of pressure detecting, and overflow valve and vacuum pressure sensor constitute the duplicate protection structure to whole oil strain oil circuit; Gas vent connection and gas vent valve communicate by Precise Alloy valve piece internal oil passages, and the gas vent valve is connected to oil pump oil-out place; Online fuel feeding valve is plugged on the Precise Alloy valve piece, the oil pump inlet port place of inner oil strain oil circuit; Other draw oil sample valve and the visual window of all being fitted with of the removal of impurities filter core and the filter core that dewaters.
Embedded high-performance special digital controller is installed on the top of described cabinet, comprise that man-machine interface adopts LCDs, menu in Chinese, is furnished with the common function button simultaneously, be electrically connected by power supply input circuit and signal input circuit and oil strain oil circuit, be connected with external electrical with signal plug by supply socket.
The heating-up temperature setting knob and the exothermic temperature setting knob of the working temperature of regulating heater and radiator respectively are installed on the described digitial controller.
The beneficial effect that invention has is:
The integral type oil circuit, whole device inside connects without any pipeline, has effectively reduced the sealing position, reduces to leak; Duplicate protection has improved the fail safe of device under fault and misoperation situation; The loaded switch power failure that need not to operate a switch can be under the working condition that not influence the normal operation of transformer and oil-filtering apparatus itself, by oil-filtering apparatus directly the online ground that is put into of the methane gas in the shunting switch; When loaded switch long-term work oil level descends, power failure need not to operate a switch, can be under the state of the normal operation of transformer, fuel feeding valve by oil-filtering apparatus itself, directly qualified same model transformer insulation oil is replenished and be injected on load tap changer, improved the reliability of power supply and the fail safe of equipment operation; Oil sample valve and visual window are convenient to the sampling and the observation of insulating oil; The digitial controller operability is good; Whole device is strong to the adaptive capacity of temperature environment factor, and assurance device is reliable oil strain under the abominable various temperature of environment, realizes the mode of operation round-the-clock, that no worker monitor is on duty.
Description of drawings
Fig. 1 is the structure chart of on-line oil filter device of on-load tap-changer of the present invention.
Fig. 2 is the internal oil passages schematic diagram of on-line oil filter device of on-load tap-changer of the present invention.
Fig. 3 is the digitial controller panel partial enlarged drawing of on-line oil filter device of on-load tap-changer of the present invention.
Among the figure: 1. stainless steel cabinet, 2. supply socket, 3. signal plug, 4. three phase electric machine 5. passes in and out oily joint, 6. gas vent connection, 7. online fuel feeding valve, 8. vacuum pressure sensor, 9. gas vent valve, 10. oil pump, 11. air switches, 12. digitial controllers, 13. the heating-up temperature setting knob, 14. exothermic temperature setting knobs, 15. power supply input circuits, 16. the signal input circuit, 17. Pressure gauges, 18. overflow valves, 19. the pressure reduction relay, 20. valves that draw oil sample, 21. Precise Alloy valve pieces, 22. visual window, the filter core 23. dewater, 24. removal of impurities filter cores, 25. heaters, 26. radiator, loaded tap switch oil chambers 27..
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As Fig. 1, Fig. 2, the integral type plug-in mounting oil circuit that on-line oil filter of the present invention adopts, all elements comprise three phase electric machine 4, oil pump 10, pass in and out oily joint 5, gas vent connection 6, online fuel feeding valve 7, gas vent valve 9, vacuum pressure sensor 8, overflow valve 18, pressure reduction relay 19, valve 20 draws oil sample, visual window 22, Pressure gauge 17, filter core 23 dewaters, whole embedded plug-in mountings such as removal of impurities filter core 24 parts such as grade are connected on the numerical control machine-shaping Precise Alloy valve piece 21 that is fixed in stainless steel cabinet 1, in the Precise Alloy valve piece 21 the integral type oil circuit is arranged, whole device is inner to be connected without any pipeline, effectively reduced the sealing position, reduced and leak.When on-line oil filter is connected with on load tap changer, utilize flanged flexible pipe that the oil-in of oil-filtering apparatus is linked to each other with the oil-out of loaded tap switch oil chamber 27, the oil-out of oil-filtering apparatus links to each other with the oil-in of loaded tap switch oil chamber 27.
As Fig. 1, Fig. 2; Pressure gauge 17 is installed on the Precise Alloy valve piece 21 and shows real-time pressure; overflow valve 18 is in parallel with oil pump; be plugged on the Precise Alloy valve piece 21; the inlet port place of oil pump 10 is provided with the vacuum pressure sensor 8 of pressure detecting, and 8 pairs of whole oil strain oil circuits of overflow valve 18 and vacuum pressure sensor constitute the duplicate protection structure.When situation outlet pressures such as obstruction occur was higher than the overflow valve opening pressure, oil formed circulation by overflow valve 18 in inside; Lost efficacy as overflow valve 18, the vacuum pressure sensor 8 of pressure detecting pressure limiting can also play a protective role, and starter motor 4 when preventing that inlet valve from not opening damages oil pump 10.
As shown in Figure 1 and Figure 2, gas vent connection 6 and gas vent valve 9 are plugged on the Precise Alloy valve piece 21, and communicate by Precise Alloy valve piece 21 inside.Gas vent connection 6 directly is connected with the gas outlet of the on load tap changer Buchholz relay of transformer by flanged flexible pipe, when loaded switch produces methane gas in running, when accumulating in the on load tap changer Buchholz relay, gas vent valve 9 in can device for opening is emitted methane gas from bottom of device, after treating that gas drains, gas vent valve 9 cuts out get final product, power failure need not to operate a switch, guarantee the operate as normal of equipment, improved reliability, fail safe and the power supply quality of power supply.
As shown in Figure 1 and Figure 2, when loaded switch long-term work oil level descends, power failure need not to operate a switch, can be under the state of the normal operation of transformer, online fuel feeding valve 7 by on-line oil filter itself, directly qualified same model transformer insulation oil is replenished and be injected on load tap changer, improved the reliability of power supply and the fail safe of equipment operation.Concrete operations are: at first on-line oil filter is set at manual mode of operation, close the delivery valve of on load tap changer, to connect flexible pipe connects online fuel feeding valve 7 and implants in the oil drum, open the delivery valve of online fuel feeding valve 7 and shunting switch, manually boot on-line oil filter, makeup oil enters the switch grease chamber from oil drum through the flexible pipe on-line oil cleaning device of flowing through.Repairing is closed online fuel feeding valve 7 after finishing, and opens the delivery valve of on load tap changer, presses digitial controller 12 selector buttons, recovers regularly or operation automatically.
As shown in Figure 1 and Figure 2, the removal of impurities filter core 24 and filter core 23 other draw oil sample valve 20 and the visual windows 22 of all being fitted with that dewater.The valve 20 that draws oil sample is convenient to extract the oil sample of oil strain oil circuit different parts; Visual window 22 is convenient to observe the quality of colour of insulating oil.The concrete operations of drawing oil sample are: the air switch 11 of cutting off the electricity supply, and the valve 20 that draws oil sample is turned in the work of arresting stop, directly takes a sample with syringe, and sampling is tightened sample valve, the valve 20 that draws oil sample of screwing on, power turn-on air switch 11 after finishing.Can determine when to change parts such as the removal of impurities filter core 24 and the filter core 23 that dewaters according to insulating oil sampling quality and color observation.
As Fig. 1, shown in Figure 3, embedded high-performance special digital controller 12 is installed in the top of stainless steel cabinet 1, comprises the simple and direct man-machine interface: adopt LCDs, menu in Chinese is furnished with simple and direct common function button simultaneously.Be electrically connected with the oil strain oil circuit by power supply input circuit 15 and signal input circuit 16, be connected with external electrical with signal plug 3 by supply socket 2.Have manually, automatically, functions such as regularly startup, operating time setting; And have action frequency record, safeguard and report to the police and multiple functions such as technical parameter demonstration.
As shown in Figure 1 and Figure 2, heating-up temperature setting knob 13 and exothermic temperature setting knob 14 are installed on the digitial controller 12, regulate the working temperature of heater 25 and radiator 26 respectively.(be set to 0-5 ℃ as preference temperature) when temperature is lower than set point, heater 25 is started working; When temperature surpasses set point (being set to 35-40 ℃ as preference temperature), radiator 26 is started working.Assurance device is reliable oil strain under the abominable multiple temperature of environment, humidity environment, realizes the mode of operation round-the-clock, that no worker monitor is on duty.
Claims (3)
1. on-line oil filter device of on-load tap-changer, all elements comprise three phase electric machine (4), oil pump (10), pass in and out oily joint (5), gas vent connection (6), online fuel feeding valve (7), gas vent valve (9), vacuum pressure sensor (8), overflow valve (18), pressure reduction relay (19), valve (20) draws oil sample, visual window (22), Pressure gauge (17), filter core (23) dewaters, the whole embedded plug-in mountings of removal of impurities filter core (24) are connected on the numerical control machine-shaping Precise Alloy valve piece (21) that is fixed in stainless steel cabinet (1), in the Precise Alloy valve piece (21) the integral type oil circuit is arranged, the flexible pipe that the turnover of cabinet sidewall oil joint (5) adopts the band steel flange directly is connected with the oil inlet and outlet flange of the loaded tap switch oil chamber (27) of transformer; It is characterized in that: show that the Pressure gauge (17) of oil pump outlet real-time pressure is installed on the oil pump oil-out place of Precise Alloy valve piece (21); Overflow valve (18) is in parallel with oil pump (10), be plugged on the Precise Alloy valve piece (21), the inlet port place of oil pump (10) is provided with the vacuum pressure sensor (8) of pressure detecting, and overflow valve (18) and vacuum pressure sensor (8) constitute the duplicate protection structure to whole oil strain oil circuit; Gas vent connection (6) and gas vent valve (9) communicate by Precise Alloy valve piece (21) internal oil passages, and gas vent valve (9) is connected to oil pump oil-out place; Online fuel feeding valve (7) is plugged on the Precise Alloy valve piece (21), the oil pump inlet port place of inner oil strain oil circuit; Other valve that draws oil sample (20) and the visual window (22) of all being fitted with of removal of impurities filter core (24) and the filter core that dewaters (23).
2. a kind of on-line oil filter device of on-load tap-changer according to claim 1, it is characterized in that: embedded high-performance special digital controller (12) is installed on the top of described cabinet (1), comprise that man-machine interface adopts LCDs, menu in Chinese, is furnished with the common function button simultaneously, be electrically connected with the oil strain oil circuit by power supply input circuit (15) and signal input circuit (16), be connected with external electrical with signal plug (3) by supply socket (2).
3. a kind of on-line oil filter device of on-load tap-changer according to claim 2 is characterized in that: heating-up temperature setting knob (13) and exothermic temperature setting knob (14) that the working temperature of regulating heater (25) and radiator (26) respectively is installed on the described digitial controller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101007609A CN101640104B (en) | 2009-07-21 | 2009-07-21 | On-line oil filter device of on-load tap-changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101007609A CN101640104B (en) | 2009-07-21 | 2009-07-21 | On-line oil filter device of on-load tap-changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101640104A CN101640104A (en) | 2010-02-03 |
| CN101640104B true CN101640104B (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101007609A Expired - Fee Related CN101640104B (en) | 2009-07-21 | 2009-07-21 | On-line oil filter device of on-load tap-changer |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794662B (en) * | 2010-03-31 | 2012-03-07 | 哈尔滨朗斯电力设备有限责任公司 | Complex oil filtering system for transformer on-load switch |
| CN102237177B (en) * | 2010-05-06 | 2013-07-10 | 国家电网公司 | Device for filtering oil in electrified manner for on-load tap-changer of transformer |
| CN102226960B (en) * | 2011-03-18 | 2012-09-26 | 烟台伊科电气技术有限公司 | On-line oil filtering device |
| CN102226961B (en) * | 2011-04-01 | 2016-01-13 | 江苏省电力公司南京供电公司 | Transformer switch room live oil-replacing device and application process thereof |
| CN102360750A (en) * | 2011-06-24 | 2012-02-22 | 慈溪市供电局 | On-line oil filtering device |
| CN102500153A (en) * | 2011-11-17 | 2012-06-20 | 宁波电业局 | On-load tap-changer and on-line oil filter integrated machine and oil filtering method |
| CN102903481B (en) * | 2012-08-13 | 2016-01-20 | 吴江骏达电梯部件有限公司 | A kind of on-load tap-changer oil filter |
| CN104167285A (en) * | 2013-05-17 | 2014-11-26 | 许安良 | On-load tap changer with on-line negative pressure oil filtering device |
| CN108597771A (en) * | 2018-04-28 | 2018-09-28 | 国家电网公司 | A kind of portable loaded switch oil strain repairing is changed oil three-in-one unit and its application process |
-
2009
- 2009-07-21 CN CN2009101007609A patent/CN101640104B/en not_active Expired - Fee Related
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| CN101640104A (en) | 2010-02-03 |
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Granted publication date: 20110511 Termination date: 20120721 |