CN104014189A - High-precision vacuum oil filter - Google Patents
High-precision vacuum oil filter Download PDFInfo
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- CN104014189A CN104014189A CN201410265267.3A CN201410265267A CN104014189A CN 104014189 A CN104014189 A CN 104014189A CN 201410265267 A CN201410265267 A CN 201410265267A CN 104014189 A CN104014189 A CN 104014189A
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Abstract
The invention discloses a high-precision vacuum oil filter and belongs to the field of vacuum separation equipment. The high-precision vacuum oil filter comprises an oil feeding system, a heating system, a vacuum treatment system, an oil discharging system and a precise filtering treatment system which are connected in sequence, wherein the oil feeding system comprises an oil feeding valve, a rough filter, an oil feeding pump and an oil feeding check valve; the vacuum treatment system comprises a double-electrode vacuum separation chamber, and a condensation device, a roots pump, a high-vacuum solenoid valve and a vacuum pump which are connected in sequence; the oil discharging system comprises an oil discharging pump and an oil discharging check valve; the precise filtering treatment system comprises a plurality of grades of fine filters; each fine filter comprises a shell, and a filter core which is arranged in the shell, wherein the upper and lower ends of the filter core are connected with the shell; each filter core surrounds a fine filtering pipe and a sealed rotary core sleeve is arranged at the periphery of each filtering core; the bottom of each rotary core sleeve is arranged on the shell through a rotary shaft. According to the high-precision vacuum oil filter, the rotary core sleeves are matched with the gap-changing filter cores, so that the filtering precision can be improved and the filtering resistance is reduced, and furthermore, the granularity index requirements of transformer oil are met.
Description
Technical field
The invention belongs to vacuum separation equipment technical field, be specifically related to a kind of high accuracy vacuum oil filtering device being applicable under extra-high voltage condition.
Background technology
Along with the fast development of national economy, China's power industry has also obtained significant progress, thereby transformer station and transmission and transformation engineering also increase accordingly, and a lot of large-engineerings have no longer been confined to 500kV, but it is even higher to rise to 1000kV.Following table is " 750kV power transformer, liquid immersed reactor, transformer construction inspection rules " (Q/GDW 122-2005).
As can be seen from the above table, 750kV and above index request to transformer oil are more and more higher, are first that granularity has been proposed to new requirement, be the processing accuracy of impurity to be required higher, and be secondly that also having more strictly of water content and air content improved.
Once applied for a kind of extra-high voltage vacuum oil-filter (publication number is CN 203281131U) before applicant, it mainly comprises the oil feeding system, heating system, the vacuum flush system that connect successively, goes out oil system and secondary filter treatment system.Along with the index request of transformer oil is more and more higher, existing oil filter performance is had higher requirement, therefore need on existing oil filter, make further improvements to improve its filtering accuracy.In prior art, pending oil enters coarse filter from passing in and out oil exchange valve under suction function, filter out after oarse-grained impurity, enter heating system through oil feeding system and be heated to design temperature (by the control of automatic constant-temperature digital readout temperature controller), enter again two-stage vacuum separation chamber, after fluid explosion atomization, form step by step the great oil film of developed area, W/O, gas are sharply vaporized and are realized separating of oil and water, gas under high vacuum state, isolated fluid, by going out oil system, is delivered in accurate filter through the mechanical particles in multistage filtering filtering fluid.Wherein accurate filter generally adopts one deck or two-layer filter core, and its filtration result determines by filter core performance completely, and particularly, when filter core adheres to after a certain amount of oil, the resistance of filter core can increase.Consider that separately the structure of filter core to be improved to improve filtering accuracy difficulty too large, therefore can consider the structure of whole accurate filter to make improvement.
Summary of the invention
The object of the invention has been to provide a kind of high accuracy vacuum oil filtering device, and this oil filter separative efficiency is high, resistance is little, and filtering accuracy is further promoted.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
A kind of high accuracy vacuum oil filtering device, comprise successively the oil feeding system, heating system, the vacuum flush system that connect, go out oil system and secondary filter treatment system, described oil feeding system comprises oil inlet valve, coarse filter, oil-feed pump and in line check valve, described vacuum flush system comprises bipolar vacuum separation chamber and the condensing unit, lobe pump, high-vacuum electromagnetic valve and the vavuum pump that connect successively, described go out oil system comprise oil pump and oil outlet one-way valve, described secondary filter treatment system comprises some grades of accurate filters, the oil inlet valve of described oil feeding system connects pending oily holding vessel, in line check valve connects heating system, this heating system output connects the bipolar vacuum separation chamber of vacuum flush system, moisture vapor transport after separation is to condensing unit, by discharging after respective handling, fluid after separation by go out oil system be transported to secondary filter treatment system carry out essence filter, finally output to pending oily holding vessel by fuel-displaced valve, described accurate filter comprises housing, be positioned at the filter core that housing and upper and lower two ends are connected with housing, this filter core surrounds smart screen pipe, described filter core is arranged with the rotation core retainer plate of sealing outward, this rotation core retainer plate bottom is contained on housing by rotating shaft.
The high accuracy vacuum oil filtering device of technique scheme, owing to being provided with the rotation core retainer plate of sealing in filter core periphery, fluid is under the effect of centrifugal force, further differential, discharge air and moisture wherein, the impurity and the particle that adhere to thereon can depart from rotation core retainer plate simultaneously, prevent from stopping up, the corresponding filtration resistance that reduces to rotate core retainer plate, the setting of therefore rotating core retainer plate is equivalent to increase an elementary smart filter process, alleviate the burden that filter core essence is filtered, then filter core carries out secondary filter to the fluid filtering through elementary essence, thereby greatly improve the filtering accuracy of oil filter.
Further limit, described filter core is composite bed, and this composite bed at least comprises two-layer netted Polyester Fibers layer, between the netted Polyester Fibers layer of adjacent two layers, is provided with glass layer.When fluid enters filter core, first pass through netted Polyester Fibers layer, pass through again glass layer, and through netted Polyester Fibers layer, to push away in this, finally by the netted Polyester Fibers layer of crossing innermost layer, because netted Polyester Fibers lamellar spacing is larger, glass fibre lamellar spacing is less, when fluid is through out-of-date, can push netted Polyester Fibers layer, its polyester fiber is pressed on the little glass fibre in gap, liquid can be selected to flowing according to the size of pressure, carry out selective flow direction according to the clearance pressure size being pressed between glass layer by the pressure of glass layer with by netted Polyester Fibers layer, at this moment large impurity and particle are fixed in netted lattice by netted Polyester Fibers layer, the impurity that these are large and particle can not pass through the little glass layer in gap, can not the fit clearance between netted Polyester Fibers layer and glass layer flow, simultaneously, consider the poor toughness of glass fibre, easily crisp characteristic, therefore also need to arrange the netted Polyester Fibers layer of one deck in the inner side of glass layer, ensure the stability of intermediate glass fabric filtration, thereby reaching multilayer space-changeable type filters, greatly improve the filtering accuracy of smart filtration.
Further limit, the gap of described netted Polyester Fibers layer by outer and in reduce successively, and outermost netted Polyester Fibers lamellar spacing is less than the gap that rotates core retainer plate.Due to the netted Polyester Fibers layer of rotation in core retainer plate, more its gap of internal layer is less, therefore fluid through repeatedly progressively refinement after filtering, can further guarantee the filtering accuracy of fluid.
The present invention compared to existing technology, owing to being provided with rotation core retainer plate, first it can cross preliminary essence and filter some impurity and particle in filtering, moreover, rotary core is enclosed within the rotating shaft effect backspin raw centrifugal force of changing the line of production, the impurity and the particle that adhere to thereon can depart from rotation core retainer plate under centrifugal action, thereby have reduced the resistance filtering, and filter and lay the first stone for the further essence of filter core; Become gap filter course because the lamination layer structure of filter core forms, be beneficial to more tiny impurity and solids precipitation and absorption, fluid is able to further differential and attenuates, and the degassed effect of dewatering is better.
Brief description of the drawings
Fig. 1 is the structural representation of facing of the present invention;
Fig. 2 is plan structure schematic diagram of the present invention;
Fig. 3 is the internal structure schematic diagram of accurate filter;
Fig. 4 is the structural representation of filter core embodiment 1;
Fig. 5 is the bridge-type connection diagram between outlet A, the import B of pending oily holding vessel and oil inlet valve, fuel-displaced valve.
Detailed description of the invention
In order to make those skilled in the art, the present invention may be better understood, below in conjunction with drawings and Examples, technical solution of the present invention further illustrated.
Embodiment 1:
Fig. 1 and Fig. 2 show the structural representation of high accuracy vacuum oil filtering device, comprise and be arranged on the oil feeding system 1 connecting successively in frame 7, heating system 2, vacuum flush system, go out oil system 4 and secondary filter treatment system 5, described oil feeding system 1 comprises oil inlet valve 11, coarse filter 12, oil-feed pump and in line check valve, described heating system 2 comprises four electric heater units 21, described vacuum flush system comprises bipolar vacuum separation chamber 31 and the condensing unit 32 connecting successively, 33, lobe pump 34, high-vacuum electromagnetic valve and vavuum pump 35, condensing unit 32, 33 adopt condensed in two stages, described go out oil system 4 comprise oil pump and oil outlet one-way valve, described secondary filter treatment system 5 includes three accurate filters and forms three grades of essence filtrations.Concrete annexation is: the oil inlet valve 11 of described oil feeding system 1 connects pending oily holding vessel, in line check valve connects heating system 2, these heating system 2 outputs connect the bipolar vacuum separation chamber 31 of vacuum flush system, moisture vapor transport after separation is to condensing unit 32,33, after respective handling, discharge, fluid after separation by go out oil system 4 be transported to secondary filter treatment system 5 carry out essence filter, finally output to pending oily holding vessel by fuel-displaced valve 6, complete primary purification circulation.
For improving the filtering accuracy of equipment, accurate filter in secondary filter treatment system 5 has been done to following improvement, as shown in Figure 3, this accurate filter comprises housing 51, filter core 52, rotation core retainer plate 54 and rotating shaft 55, filter core 52 is positioned at housing 51 and upper and lower two ends are connected with housing 51, in filter core 52, be smart screen pipe 52, rotation core retainer plate 54 is sealed in filter core 52 peripheries, and its bottom is contained on housing 51 by rotating shaft 155.That rotates core retainer plate 54 is arranged so that fluid is under the effect of centrifugal force, further differential, discharge air and moisture wherein, the impurity and the particle that stick on rotation core retainer plate 54 can depart from rotation core retainer plate 54 simultaneously, thereby reduce to rotate the filtration resistance of core retainer plate 54, then filter core 52 carries out secondary filter to the fluid filtering through elementary essence, thereby improves the filtering accuracy of oil filter.
Fig. 4 shows the structure of filter core 52, and filter core 52 structures are composite bed, and this composite bed comprises inside and outside two-layer netted Polyester Fibers layer 521,523, between two-layer netted Polyester Fibers layer 521,523, is provided with glass layer 522.When fluid enters filter core 52, first pass through outer netted Polyester Fibers layer 521, then pass through glass layer 522, finally by crossing the netted Polyester Fibers layer 523 of internal layer.Because Polyester Fibers gap is larger, glass fibre gap is less, when fluid is through out-of-date, glass fibre can push Polyester Fibers, its polyester fiber is pressed on the little glass layer in gap, liquid can be selected to flowing according to the size of pressure, carry out selective flow direction according to the clearance pressure size being pressed between glass layer by the pressure of glass layer with by netted Polyester Fibers layer, at this moment large impurity and particle are fixed in netted lattice by netted Polyester Fibers layer, the impurity that these are large and particle can not pass through the little glass layer in gap, can not the fit clearance between netted Polyester Fibers layer and glass layer flow.Simultaneously, consider the poor toughness of glass fibre, easy crisp characteristic, be therefore provided with the netted Polyester Fibers layer 523 of internal layer in the inner side of glass layer 522, ensure the stability that intermediate glass fibrage 522 filters, filter thereby reach multilayer space-changeable type, to have improved smart filtering accuracy.
Lamination layer structure as above, the gap of the netted Polyester Fibers layer 523 of internal layer is less than the gap of outer netted Polyester Fibers layer 521, and outermost netted Polyester Fibers layer 521 gap are less than the gap that rotates core retainer plate 54.Because two-layer netted Polyester Fibers layer 521,523 gap of rotation in core retainer plate 54 constantly reduce, therefore fluid through repeatedly progressively refinement after filtering, can further guarantee the filtering accuracy of fluid.
The automation that described invention is also provided with automation control system and improves equipment; reduce human cost; this automation control system comprises PLC, display, temperature sensor, liquid level sensor and electrical control cubicles; also be furnished with overtemperature halt alarm device and superpressure overflow automatic alarm shutdown protector, realize left unguarded.
As shown in Figure 5, between the outlet A of pending oily holding vessel and import B and oil inlet valve 11 and fuel-displaced valve 6, be provided with turnover oil and exchange valve 8, this turnover oil exchanges valve 8 and connects by four valve V1-V4 bridge-types, its operation principle is as follows: when outlet, A enters the entrance of oil filter as pending oil, when import B flow back into the import of pending oily holding vessel as oil filter clean oil, open valve V1 and V4, valve-off V2 and V3; When import B enters the entrance of oil filter as pending oil, when outlet A flow back into the import of pending oily holding vessel as oil filter clean oil, valve-off V1 and V4, opens valve V2 and V3.
The bipolar vacuum separation of this invention is indoor all adopts that unique all steel is degassed, dehydration knockout tower, and separating area is large, makes fluid be film-form and launches and realizes solid to evaporate; Built-in full-automatic distributor, utilization can destroy the special composite material manufacture of profit compatibility, and automatic rotation carries out high efficiency oil-water atomization again, and oil stream is long in the indoor time of staying of vacuum separation, guarantees the optimum efficiency of first separation.
Coarse filter is imported with original packaging Germany HYDAC filter core, stainless steel, can clean use repeatedly, and three grades of accurate filters are imported with original packaging Italy FILTREC and U.S. 3m filter core, filter capacity 4000T/ only, filter area is large, and water environment capacity is strong, and the life-span is long, filter capacity is the more than 5 times of common domestic filter core, can reduce the replacement cycle, reduce use cost, filtering accuracy can reach 0.5um.
Heating system adopts state-of-the-art heat radiation air indirect technology in the world, heating element heater heats up by surrounding air, in heat radiation heating container, make oil evenly heat up, area of heating surface load is low, less than 1.1W/cm2, thoroughly solve oil ageing, the cracking that common heating mode causes, will not destroy the composition of oil itself; Heating element heater is anti-oxidant, and heating container is stainless steel material, and water back particular design makes fluid produce automatically turbulent flow, the high and region of bypassed oil absolutely not of heat transfer efficiency.
Vacuum separation system adopts the precious original-pack sliding vane rotary vacuum pump of nature air swept type Germany Lay with world lead level, and be equipped with secondary Roots blower pump and two-stage vacuum separation chamber, inter-stage liquid level automatic balancing also forms stage head, guarantee quick exhaust capacity and high workload vacuum under heavy traffic condition, performance is better than adopting the oil filter of single-stage vacuum source vacuum separation chamber.
The present invention also adopts advanced import photoelectric level control technology, detects liquid level signal by electronic switch, feeds back to solenoid control and enters the switching of the pipeline of vacuum separation chamber, thereby realize the automatic control of liquid level.Photo-electric control adopts polarised light refraction and detects, and not disturbed by external light source.Selected electronic switch, even the foam of oil also can correctly feed back liquid level signal, thereby ensures that the foam of fluid also can carry out the accurate control of liquid level, and absolutely not fuel injection event occurs, and low oil level electronic switch is joined by institute, can effectively prevent heater dry combustion method.
This equipment also has phase shortage, overload protection and Trinity electrical control interlocking design.Vavuum pump, oil pump and heating system lock together, no matter vavuum pump, oil pump and any one position of heating system go wrong, it can realize automatic blocking, thereby avoid oil filter dry combustion method, run the phenomenons such as oil, electric leakage, can prevent the device damage that maloperation causes completely, guarantee that oil filter under any circumstance can safe operation.
Stator, rotor gear, axle and the bearing of oil pump all adopts high-strength stainless steel to make.Can tolerate the stress that high viscosity High Pressure Difference medium produces, be applicable to the work of high vacuum environment, operate steadily, noise is low, easy to maintenance, failure-free operation for a long time.
Above high accuracy vacuum oil filtering device provided by the invention is described in detail.The explanation of specific embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (3)
1. a high accuracy vacuum oil filtering device, comprise the oil feeding system (1) connecting successively, heating system (2), vacuum flush system, go out oil system (4) and secondary filter treatment system (5), described oil feeding system (4) comprises oil inlet valve (11), coarse filter (12), oil-feed pump and in line check valve, described vacuum flush system comprises bipolar vacuum separation chamber (31) and the condensing unit (32 connecting successively, 33), lobe pump (34), high-vacuum electromagnetic valve and vavuum pump (35), described go out oil system (4) comprise oil pump and oil outlet one-way valve, described secondary filter treatment system (5) comprises some grades of accurate filters, the oil inlet valve (11) of described oil feeding system (1) connects pending oily holding vessel, in line check valve connects heating system (2), this heating system (2) output connects the bipolar vacuum separation chamber (31) of vacuum flush system, moisture vapor transport after separation is to condensing unit (32, 33), after respective handling, discharge, fluid after separation by go out oil system (4) be transported to secondary filter treatment system (5) carry out essence filter, finally output to pending oily holding vessel by fuel-displaced valve (6), it is characterized in that, described accurate filter comprises housing (51), be positioned at the filter core (52) that housing (51) and upper and lower two ends are connected with housing (51), this filter core (52) surrounds smart screen pipe (53), the outer rotation core retainer plate (54) that is arranged with sealing of described filter core (52), this rotation core retainer plate (54) bottom is contained on housing (51) by rotating shaft (55).
2. high accuracy vacuum oil filtering device according to claim 1, it is characterized in that, described filter core (52) is composite bed, this composite bed at least comprises two-layer netted Polyester Fibers layer (521,523), between the netted Polyester Fibers layer of adjacent two layers (521,523), is provided with glass layer (522).
3. high accuracy vacuum oil filtering device according to claim 2, it is characterized in that, the gap of described netted Polyester Fibers layer (521,523) by outer and in reduce successively, and outermost netted Polyester Fibers layer (521) gap is less than the gap of rotation core retainer plate (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410265267.3A CN104014189B (en) | 2014-06-16 | 2014-06-16 | Vacuum oil filtering device in high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410265267.3A CN104014189B (en) | 2014-06-16 | 2014-06-16 | Vacuum oil filtering device in high precision |
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| Publication Number | Publication Date |
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| CN104014189A true CN104014189A (en) | 2014-09-03 |
| CN104014189B CN104014189B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410265267.3A Active CN104014189B (en) | 2014-06-16 | 2014-06-16 | Vacuum oil filtering device in high precision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019000342A1 (en) * | 2017-06-29 | 2019-01-03 | 黄玉倩 | Dedicated filter for water heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2151267Y (en) * | 1993-02-12 | 1993-12-29 | 赵琢玉 | Active and effective fuel filter |
| US20050178716A1 (en) * | 2002-10-08 | 2005-08-18 | Pti Technologies, Inc. | Filter assembly and filter element with integral seal |
| CN201275445Y (en) * | 2008-09-19 | 2009-07-22 | 重庆洁能过滤技术有限公司 | Filter element of composite filtering layer |
| CN102108926A (en) * | 2009-12-24 | 2011-06-29 | 斗山英维高株式会社 | Filtering system for preventing solidification of impurity contained in fuel of diesel engine |
| CN203281131U (en) * | 2013-05-20 | 2013-11-13 | 重庆渝能滤油机制造有限公司 | Ultra-high-voltage vacuum oil filter |
-
2014
- 2014-06-16 CN CN201410265267.3A patent/CN104014189B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2151267Y (en) * | 1993-02-12 | 1993-12-29 | 赵琢玉 | Active and effective fuel filter |
| US20050178716A1 (en) * | 2002-10-08 | 2005-08-18 | Pti Technologies, Inc. | Filter assembly and filter element with integral seal |
| CN201275445Y (en) * | 2008-09-19 | 2009-07-22 | 重庆洁能过滤技术有限公司 | Filter element of composite filtering layer |
| CN102108926A (en) * | 2009-12-24 | 2011-06-29 | 斗山英维高株式会社 | Filtering system for preventing solidification of impurity contained in fuel of diesel engine |
| CN203281131U (en) * | 2013-05-20 | 2013-11-13 | 重庆渝能滤油机制造有限公司 | Ultra-high-voltage vacuum oil filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019000342A1 (en) * | 2017-06-29 | 2019-01-03 | 黄玉倩 | Dedicated filter for water heater |
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| CN104014189B (en) | 2016-10-05 |
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