CN105754702A - System and treatment method for recovering properties of waste transformer oil - Google Patents
System and treatment method for recovering properties of waste transformer oil Download PDFInfo
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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Abstract
The invention discloses a system and a treatment method for recovering properties of waste transformer oil. The system comprises an oil supplying pump, a vacuum treatment device, an adsorption regeneration device, a secondary fine filtering device and an electric control cabinet. The system integration is realized by integrating a rough filtering device, the secondary fine filtering device, a heating and temperature rising device, the vacuum treatment device and the adsorption regeneration device, and the integrated system can be used for carrying out rough filtering and secondary fine filtering on the waste transformer oil, dehydrating, degassing and filtering in vacuum, adsorbing, regenerating and filtering, and can be used for carrying out all-directional filtering treatment on the waste transformer oil, so that the cleanness, moisture content, gas content, and indexes including an acid value, dielectric lose, pressure resistance and the like of the waste transformer oil reach new oil standards; the treatment method for recovering the properties of the waste transformer oil, provided by the invention, can be used for carrying out deep treatment by selecting a certain treatment manner according to ageing degrees and impurity components of the waste transformer oil; various treatment manners are integrated through switching working modes, so that the property recovery of the waste transformer oil is realized very well.
Description
Technical field
The present invention relates to transformer oil to purify and Regeneration Treatment technical field, especially relate to a kind of system for the transformer oil performance recovery that gives up and processing method thereof.
Background technology
Transformer oil is a kind of crude mineral oils, the distillation component in the boiling spread of distillation extraction 280 ~ 360 DEG C when being petroleum refining, and main component is Hydrocarbon, including alkane, cycloalkane and aromatic hydrocarbon etc., also has the materials such as a small amount of sulfur, oxygen, nitrogen.Transformer oil is the topmost insulation of oil-filled power equipment and cooling medium, in use can occur aging, ageing process refers to that transformer oil is under the effect of the physical chemical factors such as light, heat, oxygen, electric arc, electric field, magnetic field, radiation, the physical properties such as color, abnormal smells from the patient, kinematic viscosity and dielectric dissipation factor there occurs change, the process that its dielectric properties are gradually reduced or degenerate.The dielectric properties of oil are produced large effect by aging consequence, reduce the quality of oil product, and some quality index ultimately resulting in oil product is difficult to meet the requirement of safe performance indexes, it is necessary to being changed, the transformer oil changed is called useless transformer oil.Along with the upgrading of power grid construction accelerated development and novel electric power apparatus, useless transformator oil mass is also increasing.At present, annual power system aging scrap or exit the transformer oil disabled have tens thousand of ton.
For useless transformer oil, through certain purification, Regeneration Treatment, it is possible to recover its performance, again recycle.Miao Chuanyun proposes a kind of renovation process in patent " useless transformer oil regeneration " (patent No.: 200910081454.2), by heated for useless transformer oil be settled out big portion dirt after, use concentrated sulphuric acid pickling, metal ingredient in waste oil is corroded carbonization, leaches, use sodium carbonate alkali cleaning again, neutralize oil body pH value, finally use active hargil adsorption bleaching, leach and be finished product.Zhang Qinying patent " useless transformer oil regeneration technology " (200910183268.2) propose by heated for useless transformer oil be settled out big portion dirt after, with industry pressure filter, 1000 mesh filter screens, suspended impurity remaining in oil body is leached, oil body now is finished product as reached the faint yellow of near colorless, if oil body color is also deeper, then through active hargil adsorption bleaching, leach and be finished product.Wang Fuyi mentions a kind of adsorbent for waste oil decolouring in patent " a kind of adsorbent that useless transformer oil carries out refinery decolorization " (201010532800.x), after silver nitrate, copper sulfate, aluminum chloride are mixed according to the ratio of mass parts 0.1: 1: 100, add water to impregnate, after drying in oven, adsorbent is obtained after being thoroughly mixed, adopt the harmful components that natural sedimentation method can quickly, efficiently be removed in useless transformer oil, and decolour.Tian Songqing, Bian Shuren relate to a kind of used oil reclaimer in patent " used oil reclaimer " (200420112050.0).This device is made up of solid-liquid cyclone, dehydration device and component sickle, it is adaptable to useless transformer oil through physics and chemical mode be processed further obtain can again with product oil.Existing technology generally will use soda acid and hargil, can produce waste residue not disposable, it is easy to contaminated environment after process, and apparatus structure is complicated, bulky, operating cost is high.
Summary of the invention
In view of this, it is an object of the invention to for the deficiencies in the prior art, a kind of system for the transformer oil performance recovery that gives up and processing method thereof are provided, solve the problem that existing transformer's oil-treatment device integrated level is low, bulky and adopts transformer oil impurity after existing processing method more.
For reaching above-mentioned purpose, the present invention by the following technical solutions:
A kind of system for the transformer oil performance recovery that gives up, including:
Oil feed pump, the pipeline of described oil feed pump arrival end is provided with valve, the other end of described valve is connected to oil absorption filter by pipeline, the other end of described oil absorption filter is provided with inflow pipeline, the pipeline of the described oil feed pump port of export is provided with valve, the other end of described valve is connected with heater by pipeline, and the other end of described heater is by pipeline and the connection of the first valving, and the pipe interior between described heater and the first valving is provided with temperature sensor；
Vacuum treatment installation, described vacuum treatment installation includes vacuum tank, condensation filling, vacuum pump and first row oil pump, described vacuum pump is connected with vacuum tank by pipeline, for controlling the pressure in vacuum tank, described condensation fills and connects with vacuum tank, described vacuum tank is provided with gas-liquid separator and making-up air device, the arrival end of described vacuum tank is connected with described first valving by pipeline, the port of export of described vacuum tank is connected with first row oil pump and the first valving respectively by pipeline, is provided with liquid level sensor and pressure transducer in described vacuum tank；
Adsorption and regeneration device, described adsorption and regeneration device includes absorption regeneration tank and second row oil pump, it is provided with absorption filter element in described absorption regeneration tank, the entrance point of described absorption regeneration tank is by pipeline and the connection of the first valving, and the port of export of described absorption regeneration tank is connected with second row oil pump and the second valving respectively by pipeline；
Two grades of fine filtering devices, described two grades of fine filtering devices include the first fine filter and the second fine filter, one end of described first fine filter is connected with described second valving by pipeline, the other end is by pipeline and the connection of the second fine filter, and the other end of the second fine filter is connected with the input of fuel tank by pipeline；
Electric cabinet, described electric cabinet is provided with controller, touch screen and drive circuit, described controller is connected by communication bus with touch screen, described drive circuit electrically connects with the outfan of described controller, and the outfan of described temperature sensor, liquid level sensor and pressure transducer all electrically connects with the input of described controller.
Preferably, described absorption filter element includes urceolus, one end of described urceolus is provided with upper cover, the other end of described urceolus is provided with lower cover, cover on described and be fixedly installed hands handle, being provided with inner core in described urceolus, be filled with adsorbent in the space between described inner core and urceolus, one end of described inner core is provided with interface agency.
Preferably, described adsorbent adopts highly polar si-al-adsorbent.
Preferably, described first valving and the second valving all adopt cross valve.
Preferably, described first valving and the second valving are the valve group that three electric control valves are constituted.
Preferably, the aperture structure of described first fine filter and the second fine filter is along the diminishing gradual-change bore diameter structure of liquid flow direction, and described gradual-change bore diameter structure is used for being layered the various sizes of pollution granule of interception.
A kind of processing method for the transformer oil performance recovery that gives up, filters three kinds of processing modes including remove impurity filter type, vacuum dehydration degassing filter and absorption regeneration, and described three kinds of processing modes can switch on the touchscreen；
Described remove impurity filter type comprises the following steps:
Step A): it is remove impurity filter type by touch screen by the control mode switching of controller；
Step B): opened the valve of oil feed pump, the valve of oil feed pump entrance end and fuel tank entrance point on the touchscreen by touch operation, useless transformer oil is entered into by inflow pipeline and carries out coarse filtration in oil absorption filter；
Step C): the useless transformer oil through coarse filtration flows through pipeline and enters in heater, by the heating of useless transformer oil to entering into the first fine filter by the first valving and the second valving after temperature required and the second fine filter carries out essence and filters；
Step D): the useless transformer oil after essence filters is flowed in fuel tank by after pipeline, and when liquid level sensor detects that level height reaches setting height, controller cuts out the valve of oil feed pump arrival end, opens the outlet valve of fuel tank；
Step E): by circulating filtration, until the cleannes of useless transformer oil and granularity reach new oil standard；
Described vacuum dehydration degassing filter comprises the following steps:
Step a): be vacuum dehydration degassing filter mode by the control mode switching of controller by touch screen；
Step b): opened the valve of oil feed pump, the valve of the oil feed pump port of export and fuel-tank outlet end on the touchscreen by touch operation, useless transformer oil in fuel tank is entered into by pipeline and valve and is heated in heater to temperature required, and the useless transformer oil after heating enters into through the first valving and carries out the degassed process of dehydration in vacuum tank；
Step c): when the liquid level that liquid level sensor detects in vacuum tank reaches setting value, controller starts first row oil pump and the second valving, the transformator that now gives up enters into the first fine filter and the second fine filter carries out essence filtration, after essence filters, useless transformer oil is entered in fuel tank by fuel tank end；
Step d): by circulating filtration, until the water content of useless transformer oil and air content reach new oil standard；
Described absorption regeneration filters and comprises the following steps:
Step 1): be absorption regeneration filter type by the control mode switching of controller by touch screen；
Step 2): the valve of oil feed pump, the valve of the oil feed pump port of export, second row oil pump and fuel-tank outlet end is opened on the touchscreen by touch operation, useless transformer oil in fuel tank is entered into by pipeline and valve and is heated in heater to temperature required, useless transformer oil after heating enters in absorption regeneration tank through the first valving, useless transformer oil enters into the first fine filter by the second valving after flowing through absorption filter element and the second fine filter carries out essence filtration, and after essence filters, useless transformer oil passes back in fuel tank；
Step 3): by circulating filtration, until the useless acid number of transformer oil, dielectric loss, the index such as pressure reach new oil standard.
Preferably, in described step c), the liquid level in vacuum tank is controlled by controller and fluid level transmitter, and when liquid level is positioned at low liquid level, first row oil pump will not work；When liquid level is higher than low liquid level, useless transformer oil is also discharged by first row operation of oil pump；When liquid level reaches middle liquid level, first row oil pump reaches the rotating speed of setting and keeps constant；When liquid level reaches high liquid level, controller enters shutdown procedure, closes vacuum pump, oil feed pump, reduces the vacuum in vacuum tank.
The invention has the beneficial effects as follows:
1, the comprehensive coarse filter device of the present invention, two extremely smart mistake devices, heating system, vacuum treatment installation and adsorption and regeneration devices, realize the system integration, useless transformer oil can be carried out coarse filtration, two extremely essence filtrations, vacuum dehydration degassing filter and absorption regeneration filter, useless transformer oil can be carried out omnibearing filtration treatment, make useless transformer oil after apparatus of the present invention process so that the cleannes of transformer oil, water content, air content and acid number, dielectric loss, the index such as pressure reach new oil standard.
2, the present invention uses controller, touch screen and various sensor to achieve the automatic operating of system, can temperature in real-time monitoring system, pressure and liquid level data by sensor, the data of Sensor monitoring can realize the automatic operating of device through the process in real time of controller, and makes system have higher reliability.
3, the processing method of the useless transformer oil performance recovery that the present invention proposes, it is possible not only to realize the purification of useless transformer oil, and by adsorbing the regeneration achieving useless transformer oil, a certain processing mode can be selected to carry out advanced treating according to the degree of aging of useless transformer oil and impurity component, and switch the comprehensive various processing mode performance recovery for the transformer oil that gives up by mode of operation, this processing method is applicable to transformator online oil filtration and the useless transformer oil of recycling, automaticity is high, and operates directly perceived, flexible.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of embodiments of the invention 1；
Fig. 2 is the composition structural representation of embodiments of the invention 2；
Fig. 3 is the composition structural representation of absorption filter element；
In figure: 1-oil absorption filter, 2-oil feed pump, 3-heater, 4-temperature sensor, 5-the first valving, 6-the second valving, 7-vacuum pump, 8-first row oil pump, 9-the first fine filter, 10-the second fine filter, 11-second row oil pump, 12-absorption regeneration tank, 13-fuel tank, 14-liquid level sensor, 15-pressure transducer, 16-vacuum tank, 17-hands handle, 18-upper cover, 19-adsorbent, 20-urceolus, 21-inner core, 22-lower cover, 23-interface agency.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1:
As it is shown in figure 1, the present invention includes for the system of transformer oil performance recovery of giving up:
Oil feed pump 2, the pipeline of oil feed pump 2 arrival end is provided with valve, the other end of valve is connected to oil absorption filter 1 by pipeline, the other end of oil absorption filter 1 is provided with inflow pipeline, the pipeline of oil feed pump 2 port of export is provided with valve, the other end of valve is connected with heater 3 by pipeline, and the other end of heater 3 is connected by pipeline and the first valving 5, and the pipe interior between heater 3 and the first valving 5 is provided with temperature sensor 4；
Vacuum treatment installation, vacuum treatment installation includes vacuum tank 16, condensation filling, vacuum pump 7 and first row oil pump 8, vacuum pump 7 is connected with vacuum tank 16 by pipeline, for controlling the pressure in vacuum tank 16, condensation fills and connects with vacuum tank 16, vacuum tank 16 is provided with gas-liquid separator and making-up air device, the arrival end of vacuum tank 16 is connected by pipeline and the first valving 5, the port of export of vacuum tank 16 is connected with first row oil pump 8 and the first valving 5 respectively by pipeline, is provided with liquid level sensor 14 and pressure transducer 15 in vacuum tank 16.At the middle part of vacuum tank 16 equipped with oleophylic filler, the fluid that spray gets off is made to be dispersed in filling surface and form very thin oil film, increase gas-liquid two-phase interfacial area, extend fluid residence time in the gas phase, vacuum in vacuum tank 16 can reach 85KPa, efficiently remove the moisture in transformer oil and dissolve gas, the free water of 100% and the dissolving water of 95%, the free gas of 100% and the dissolving gas of 90% can be removed；
Adsorption and regeneration device, adsorption and regeneration device includes absorption regeneration tank 12 and second row oil pump 11, it is provided with absorption filter element in absorption regeneration tank 12, the entrance point of absorption regeneration tank 12 is connected by pipeline and the first valving 5, the port of export of absorption regeneration tank 12 is connected with second row oil pump 11 and the second valving 6 respectively by pipeline, and the first valving 5 adopts cross valve；
Two grades of fine filtering devices, two grades of fine filtering devices include the first fine filter 9 and the second fine filter 10, one end of first fine filter 9 is connected by pipeline and the second valving 6, second valving 6 adopts cross valve, the other end is connected by pipeline and the second fine filter 10, and the other end of the second fine filter 10 is connected with the input of fuel tank 13 by pipeline；
Electric cabinet, it is provided with controller, touch screen and drive circuit, controller is connected by communication bus with touch screen, and drive circuit electrically connects with the outfan of controller, and the outfan of temperature sensor 4, liquid level sensor 14 and pressure transducer 15 all electrically connects with the input of controller.
As shown in Figure 3, the absorption filter element of absorption regeneration tank 12 includes urceolus 20, one end of urceolus 20 is provided with upper cover 18, the other end of urceolus 20 is provided with lower cover 22, upper cover 18 is fixedly installed hands 17, is provided with inner core 21 in urceolus 20, in the space between inner core 21 and urceolus 20, is filled with adsorbent 19, adsorbent 19 adopts highly polar si-al-adsorbent 19, and one end of inner core 21 is provided with interface agency 23.At the initial stage that absorption filter element runs, adsorbing material unsaturation, adsorption reaction can carry out always, when the later stage, adsorbing material was saturated, changes absorption filter element in time, removes the polar impurity in oil to greatest extent.The consumption of adsorbent 19 is generally and processes the 1% of oil mass, and adsorption temp is about 60 DEG C, the transformer oil after absorption regeneration tank 12 processes, and the composition of useless transformer oil changes, and major part ageing products is adsorbed, and oil quality returns to new oil quality.
The aperture structure of the first fine filter 9 and the second fine filter 10 is along the diminishing gradual-change bore diameter structure of liquid flow direction, and gradual-change bore diameter structure is used for being layered the various sizes of pollution granule of interception.
For the processing method of the transformer oil performance recovery that gives up, filtering three kinds of processing modes including remove impurity filter type, vacuum dehydration degassing filter and absorption regeneration, three kinds of processing modes can switch on the touchscreen.
Remove impurity filter type comprises the following steps:
Step A): it is remove impurity filter type by touch screen by the control mode switching of controller；
Step B): opened the valve of oil feed pump 2, the valve of oil feed pump 2 entrance end and fuel tank 13 entrance point on the touchscreen by touch operation, useless transformer oil is entered into by inflow pipeline and carries out coarse filtration in oil absorption filter 1；
Step C): the useless transformer oil through coarse filtration flows through pipeline and enters in heater 3, by the heating of useless transformer oil to entering into the first fine filter 9 by the first valving 5 and the second valving 6 after temperature required and the second fine filter 10 carries out essence filtration；
Step D): the useless transformer oil after essence filters is flowed in fuel tank 13 by after pipeline, and when liquid level sensor 14 detects that level height reaches setting height, controller cuts out the valve of oil feed pump 2 arrival end, opens the outlet valve of fuel tank 13；
Step E): by circulating filtration, until the cleannes of useless transformer oil and granularity reach new oil standard；
Vacuum dehydration degassing filter comprises the following steps:
Step a): be vacuum dehydration degassing filter mode by the control mode switching of controller by touch screen；
Step b): opened the valve of oil feed pump 2, the valve of oil feed pump 2 port of export and fuel tank 13 port of export on the touchscreen by touch operation, useless transformer oil in fuel tank 13 is entered into by pipeline and valve and is heated in heater 3 to temperature required, and the useless transformer oil after heating enters into through the first valving 5 and carries out the degassed process of dehydration in vacuum tank 16；
Step c): when liquid level sensor 14 detects that the liquid level in vacuum tank 16 reaches setting value, controller starts first row oil pump 8 and the second valving 6, the transformator that now gives up enters into the first fine filter 9 and the second fine filter 10 carries out essence filtration, after essence filters, useless transformer oil is entered in fuel tank 13 by fuel tank 13 end；
Step d): by circulating filtration, until the water content of useless transformer oil and air content reach new oil standard；
Absorption regeneration filters and comprises the following steps:
Step 1): be absorption regeneration filter type by the control mode switching of controller by touch screen；
Step 2): open oil feed pump 2 by touch operation on the touchscreen, the valve of oil feed pump 2 port of export, the valve of second row oil pump 11 and fuel tank 13 port of export, useless transformer oil in fuel tank 13 is entered into by pipeline and valve and is heated in heater 3 to temperature required, useless transformer oil after heating enters in absorption regeneration tank 12 through the first valving 5, useless transformer oil enters into the first fine filter 9 by the second valving 6 after flowing through absorption filter element and the second fine filter 10 carries out essence filtration, after essence filters, useless transformer oil passes back in fuel tank 13；
Step 3): by circulating filtration, until the useless acid number of transformer oil, dielectric loss, the index such as pressure reach new oil standard.
In step c) in vacuum dehydration degassing filter method, the liquid level in vacuum tank 16 is controlled by controller and liquid level sensor 14, and when liquid level is positioned at low liquid level, first row oil pump 8 will not work；When liquid level is higher than low liquid level, first row oil pump 8 works and is discharged by useless transformer oil；When liquid level reaches middle liquid level, first row oil pump 8 reaches the rotating speed of setting and keeps constant；When liquid level reaches high liquid level, controller enters shutdown procedure, closes vacuum pump 7, oil feed pump 2, reduces the vacuum in vacuum tank 16.
Embodiment 2:
The present embodiment and embodiment 1 are different in that as described in Figure 2, and the first valving 5 and the second valving 6 are the valve group that three electric control valves are constituted, and by controlling being turned on and off of valves different in valve group, control the flow direction of useless transformer oil.
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, other amendments that technical scheme is made by those of ordinary skill in the art or equivalent replace, without departing from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of scope of the presently claimed invention.
Claims (8)
1. the system for the transformer oil performance recovery that gives up, it is characterised in that including:
Oil feed pump, the pipeline of described oil feed pump arrival end is provided with valve, the other end of described valve is connected to oil absorption filter by pipeline, the other end of described oil absorption filter is provided with inflow pipeline, the pipeline of the described oil feed pump port of export is provided with valve, the other end of described valve is connected with heater by pipeline, and the other end of described heater is by pipeline and the connection of the first valving, and the pipe interior between described heater and the first valving is provided with temperature sensor；
Vacuum treatment installation, described vacuum treatment installation includes vacuum tank, condensation filling, vacuum pump and first row oil pump, described vacuum pump is connected with vacuum tank by pipeline, for controlling the pressure in vacuum tank, described condensation fills and connects with vacuum tank, described vacuum tank is provided with gas-liquid separator and making-up air device, the arrival end of described vacuum tank is connected with described first valving by pipeline, the port of export of described vacuum tank is connected with first row oil pump and the first valving respectively by pipeline, is provided with liquid level sensor and pressure transducer in described vacuum tank；
Adsorption and regeneration device, described adsorption and regeneration device includes absorption regeneration tank and second row oil pump, it is provided with absorption filter element in described absorption regeneration tank, the entrance point of described absorption regeneration tank is by pipeline and the connection of the first valving, and the port of export of described absorption regeneration tank is connected with second row oil pump and the second valving respectively by pipeline；
Two grades of fine filtering devices, described two grades of fine filtering devices include the first fine filter and the second fine filter, one end of described first fine filter is connected with described second valving by pipeline, the other end is by pipeline and the connection of the second fine filter, and the other end of the second fine filter is connected with the input of fuel tank by pipeline；
Electric cabinet, described electric cabinet is provided with controller, touch screen and drive circuit, described controller is connected by communication bus with touch screen, described drive circuit electrically connects with the outfan of described controller, and the outfan of described temperature sensor, liquid level sensor and pressure transducer all electrically connects with the input of described controller.
2. a kind of system for the transformer oil performance recovery that gives up according to claim 1, it is characterized in that: described absorption filter element includes urceolus, one end of described urceolus is provided with upper cover, the other end of described urceolus is provided with lower cover, cover on described and be fixedly installed hands handle, being provided with inner core in described urceolus, be filled with adsorbent in the space between described inner core and urceolus, one end of described inner core is provided with interface agency.
3. a kind of system for the transformer oil performance recovery that gives up according to claim 2, it is characterised in that: described adsorbent adopts highly polar si-al-adsorbent.
4. a kind of system for the transformer oil performance recovery that gives up according to claim 1 and 2, it is characterised in that: described first valving and the second valving all adopt cross valve.
5. a kind of system for the transformer oil performance recovery that gives up according to claim 1 and 2, it is characterised in that: described first valving and the second valving are the valve group that three electric control valves are constituted.
6. a kind of system for the transformer oil performance recovery that gives up according to claim 1, it is characterized in that: the aperture structure of described first fine filter and the second fine filter is for along the diminishing gradual-change bore diameter structure of liquid flow direction, and described gradual-change bore diameter structure is used for being layered the various sizes of pollution granule of interception.
7. the processing method for the transformer oil performance recovery that gives up based on claim 1, it is characterized in that, filtering three kinds of processing modes including remove impurity filter type, vacuum dehydration degassing filter and absorption regeneration, described three kinds of processing modes can switch on the touchscreen；
Described remove impurity filter type comprises the following steps:
Step A): it is remove impurity filter type by touch screen by the control mode switching of controller；
Step B): opened the valve of oil feed pump, the valve of oil feed pump entrance end and fuel tank entrance point on the touchscreen by touch operation, useless transformer oil is entered into by inflow pipeline and carries out coarse filtration in oil absorption filter；
Step C): the useless transformer oil through coarse filtration flows through pipeline and enters in heater, by the heating of useless transformer oil to entering into the first fine filter by the first valving and the second valving after temperature required and the second fine filter carries out essence and filters；
Step D): the useless transformer oil after essence filters is flowed in fuel tank by after pipeline, and when liquid level sensor detects that level height reaches setting height, controller cuts out the valve of oil feed pump arrival end, opens the outlet valve of fuel tank；
Step E): by circulating filtration, until the cleannes of useless transformer oil and granularity reach new oil standard；
Described vacuum dehydration degassing filter comprises the following steps:
Step a): be vacuum dehydration degassing filter mode by the control mode switching of controller by touch screen；
Step b): opened the valve of oil feed pump, the valve of the oil feed pump port of export and fuel-tank outlet end on the touchscreen by touch operation, useless transformer oil in fuel tank is entered into by pipeline and valve and is heated in heater to temperature required, and the useless transformer oil after heating enters into through the first valving and carries out the degassed process of dehydration in vacuum tank；
Step c): when the liquid level that liquid level sensor detects in vacuum tank reaches setting value, controller starts first row oil pump and the second valving, the transformator that now gives up enters into the first fine filter and the second fine filter carries out essence filtration, after essence filters, useless transformer oil is entered in fuel tank by fuel tank end；
Step d): by circulating filtration, until the water content of useless transformer oil and air content reach new oil standard；
Described absorption regeneration filters and comprises the following steps:
Step 1): be absorption regeneration filter type by the control mode switching of controller by touch screen；
Step 2): the valve of oil feed pump, the valve of the oil feed pump port of export, second row oil pump and fuel-tank outlet end is opened on the touchscreen by touch operation, useless transformer oil in fuel tank is entered into by pipeline and valve and is heated in heater to temperature required, useless transformer oil after heating enters in absorption regeneration tank through the first valving, useless transformer oil enters into the first fine filter by the second valving after flowing through absorption filter element and the second fine filter carries out essence filtration, and after essence filters, useless transformer oil passes back in fuel tank；
Step 3): by circulating filtration, until the useless acid number of transformer oil, dielectric loss, the index such as pressure reach new oil standard.
8. a kind of processing method for the transformer oil performance recovery that gives up according to claim 7, it is characterized in that: in described step c), the liquid level in vacuum tank is controlled by controller and fluid level transmitter, when liquid level is positioned at low liquid level, first row oil pump will not work；When liquid level is higher than low liquid level, useless transformer oil is also discharged by first row operation of oil pump；When liquid level reaches middle liquid level, first row oil pump reaches the rotating speed of setting and keeps constant；When liquid level reaches high liquid level, controller enters shutdown procedure, closes vacuum pump, oil feed pump, reduces the vacuum in vacuum tank.
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| CN114188126A (en) * | 2021-11-02 | 2022-03-15 | 广西电网有限责任公司桂林供电局 | Oil filtering system and method based on transformer on-load switch |
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| CN110252024A (en) * | 2019-07-08 | 2019-09-20 | 西安热工研究院有限公司 | Gear of wind driven generator lubricating oil situ regeneration processing system and method |
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