CN109003787A - A kind of transformer oil intelligent microwave vacuum processing method - Google Patents
A kind of transformer oil intelligent microwave vacuum processing method Download PDFInfo
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- CN109003787A CN109003787A CN201810819025.2A CN201810819025A CN109003787A CN 109003787 A CN109003787 A CN 109003787A CN 201810819025 A CN201810819025 A CN 201810819025A CN 109003787 A CN109003787 A CN 109003787A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Transformer Cooling (AREA)
- Fats And Perfumes (AREA)
Abstract
The present invention relates to a kind of transformer oil intelligent microwave vacuum processing methods, transformer oil microwave selective heating system is provided, on-line monitoring system, control module, vacuum flush system, oil circulating system etc. control above system by control module and realize to the vacuum processing of transformer oil intelligent microwave.The present invention is nonpolar insulating liquid using transformer oil, but its internal contained humidity is the characteristic of polar molecule, microwave heating is that polar molecule inner high speed is made to vibrate high-efficiency heating, and to the principle that nonpolar transformer oil can penetrate, selectively contained humidity in transformer oil is removed, and without heating wire and electrical bar to the direct-fired risk factor of oil, reach safe and efficient, quick, environmentally friendly online oil filtration purpose, it can accomplish intelligent small size, be easy to incorporate in smart grid construction.
Description
Technical field
The present invention relates to a kind of transformer oil intelligent microwave vacuum processing methods.
Background technique
Traditional transformer oil vacuum oil filtering processing method is to be recycled using heating wire, electrical bar to whole transformer oil
Heating, and dehydration degassing process is vacuumized, achieve the purpose that improve transformer oil quality, due to being to whole transformer oil
It is heated, therefore online processing device volume is huge, and heating wire, electrical bar can not penetrate transformer oil as microwave and have
Selectivity heats moisture content, can only directly heat to oil, cause uneven, low efficiency, close to heating wire, electrical bar attachment
Temperature is high, and distant place temperature is low, while directly to oil heating, there are insecurity factors for heating wire, electrical bar, and oil overheat easily occurs
Deterioration, or even cause the major accident of fire.
Summary of the invention
The purpose of the present invention is to provide a kind of transformer oil intelligent microwave vacuum processing methods, to overcome in the prior art
Existing defect.
To achieve the above object, the technical scheme is that a kind of transformer oil intelligent microwave vacuum processing method, mentions
For an intelligent microwave vacuum flush system, comprising: circulation oil tank, filter, shields heating compartment, vacuum tank and goes out oil-feed pump
Oil pump；The circulation oil tank accesses the oil-feed pump through circulation oil tank delivery valve；The oil-feed pump is through oil inlet solenoid valve and
One pipeline accesses the filter；The filter top is additionally provided with safety valve；The filter accesses institute through second pipe
State shielding heating compartment；It is separately provided for providing microwave heating function in multiple through-holes that the shielding heating compartment top opens up
Microwave emission rifle, the Microwave emission rifle is connected to a microwave generator；It is additionally provided with and is used in the shielding heating compartment
The temperature sensor of interior temperature in detection shielding heating compartment；The shielding heating compartment accesses the vacuum tank through third pipeline；Institute
The top for stating vacuum tank is additionally provided with for detecting the vacuum meter of vacuum degree in tank body, the vacuum for adjusting vacuum condition in tank
Relief valve, electric contact oil level indicator are installed on vacuum tank side for detecting innage, are also equipped with pumping at the top of vacuum tank
The other end of vacuum tube, vacuum-pumping tube is connected to the import of vacuum pump；The vacuum tank is through the 4th pipeline and solenoid out
Access the oil outlet pump；Dielectric strength sensor, characteristic gas are respectively arranged in the through-hole that the 4th pipeline side opens up
Sensor and trace moisture sensor；The oil outlet pump goes out with circulation solenoid and corrected oil respectively through flow tee pipe
Mouth solenoid valve is connected；The circulation solenoid accesses the circulation oil tank through transformer oil circulation pipe；The oil-feed pump, oil inlet
Solenoid valve, safety valve, microwave generator, temperature sensor, vacuum meter, vacuum release valve, electric contact oil level indicator, vacuum pump, absolutely
Edge intensity sensor, characteristic gas sensor, trace moisture sensor, go out solenoid, oil outlet pump, circulation oil tank delivery valve,
Corrected oil outlet solenoid valve, circulation solenoid are connected to a control module；
Further include following steps:
Step S1: in advance by transformer oil quality control index parameter, comprising: transformer oil micro-water content pre-set level, insulation
Intensity pre-set level, characteristic gas content pre-set level, the first default oil level in vacuum tank, the second default oil level in vacuum tank,
Third presets oil level, shields temperature threshold and pressure index in heating compartment in vacuum tank, inputs the control module, and automatic
Control operation；
Step S2: the circulation oil tank delivery valve, oil inlet solenoid valve, oil-feed pump, true is opened by the control module in order
Sky pump and microwave generator, are filtered the transformer oil for entering system, microwave heating and vacuum dehydration degassing process；It is described
Microwave emission rifle carries out uniform penetrability heating to the transformer oil for entering the shielding heating compartment and removes moisture；
Step S3: when electric contact oil level indicator detects oil inlet to the first default oil level, control module unlatching circulation solenoid,
The oil of vacuum tank out is returned in circulation oil tank through transformer oil circulation pipe and is carried out at circulation by solenoid and oil outlet pump out
Reason, while vacuum tank being kept to balance into and out of oil；
Step S4: when the data that dielectric strength sensor, characteristic gas sensor, trace moisture sensor detect meet it is pre-
If when index, control module automatically turns on corrected oil outlet solenoid valve, circulation solenoid is simultaneously closed off, corrected oil out is started；
When there is one pre-set level is not achieved, control module opens circulation solenoid, closes corrected oil outlet solenoid valve, continues to follow
Ring processing；
Step S5: when oil temperature reaches temperature threshold in the shielding heating compartment, control module is turned down micro- by microwave generator
The Microwave emission intensity of wave ejecting gun, or close microwave generator；When oil temperature is not up to temperature threshold in the shielding heating compartment
When, control module improves the Microwave emission intensity of Microwave emission rifle by microwave generator；
Step S6: when oil level reaches the second default oil level in vacuum tank, control module turns down the frequency of oil-feed pump, reduces oil inlet
Amount improves the frequency of oil outlet pump, improves oil pump capacity；If oil level is not up to the second default oil level in vacuum tank, control module is mentioned
The frequency of high oil-feed pump improves oil inlet quantity, reduces the frequency of oil outlet pump, reduces oil pump capacity；
Step S7: when pressure reaches setting value, safety valve opens pressure release, and when pressure is down to setting value, safety valve restores to close
State；
Step S8: oil processing work finishes, and closes in order: microwave generator, oil inlet solenoid valve, vacuum pump, oil-feed pump；To true
When oil level drops to third and presets oil level in slack tank, oil outlet pump, corrected oil outlet solenoid valve and oil circulating pump solenoid valve are closed, is closed
Closed loop tank delivery valve opens vacuum release valve and destroys system vacuum, when vacuum meter is without vacuum degree, closes vacuum release valve；
Step S9: closing control module, and work terminates.
In an embodiment of the present invention, characteristic gas includes: hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, two
Carbonoxide.
Compared to the prior art, the invention has the following advantages: a kind of transformer oil intelligent microwave vacuum processing side
Method
It is nonpolar insulating liquid that innovative point of the present invention, which is using transformer oil, but its inside contained humidity is the spy of polar molecule
Property, microwave heating is that polar molecule inner high speed is made to vibrate high-efficiency heating, and to the principle that nonpolar transformer oil can penetrate,
Innovation selectively removes contained humidity in transformer oil, and direct-fired to oil without heating wire and electrical bar
Risk factor, reaches safe and efficient, quick, environmentally friendly online oil filtration purpose, and package unit can accomplish intelligent small size, be easy to
It incorporates in smart grid construction.
Detailed description of the invention
Fig. 1 is the device of transformer oil intelligent microwave vacuum processing method in the present invention；
Fig. 2 is a kind of transformer oil intelligent microwave vacuum processing method work flow diagram in the present invention；
Fig. 3 is a kind of transformer oil intelligent microwave vacuum treatment installation control module control principle block diagram in the present invention.
[label declaration]: 1- oil-feed pump, 2- oil inlet solenoid valve, 3- first pipe, 4- filter, 5- safety valve, 6- second
Pipeline, 7- shield heating compartment, 8- microwave generator, 9- Microwave emission rifle, 10- temperature sensor, 11- third pipeline, 12- vacuum
Tank, 13- vacuum meter, 14- vacuum release valve, 15- electric contact oil level indicator, 16- vacuum pump, the 4th pipeline of 17-, 18- dielectric strength
Sensor, 19- characteristic gas sensor, 20- trace moisture sensor, 21- go out solenoid, 22- oil outlet pump, 23- transformer
Oil, 24- circulation oil tank, 25- circulation oil tank delivery valve, 26- transformer oil circulation pipe, 27- corrected oil outlet solenoid valve, 28- are followed
Ring solenoid, 29- flow tee pipe, 30- microwave radiation ray.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
The present invention provides a kind of transformer oil intelligent microwave vacuum processing method, also provides an intelligent microwave and is vacuum-treated system
System, comprising: circulation oil tank 24, oil-feed pump 1, filter 4, shielding heating compartment 7, vacuum tank 12 and oil outlet pump 22；The circulation
Oil tank accesses the oil-feed pump through recycling oil tank delivery valve 25；The oil-feed pump is accessed through oil inlet solenoid valve 2 and first pipe 3
The filter；The filter top is additionally provided with safety valve 5；The filter accesses the shielding through second pipe 6 and adds
Hot cabin 7；It is separately provided for providing the microwave of microwave heating function in multiple through-holes that the shielding heating compartment top opens up
Ejecting gun 9, the Microwave emission rifle are connected to a microwave generator 8；It is additionally provided in the shielding heating compartment for detecting
Shield the temperature sensor 10 of interior temperature in heating compartment；The shielding heating compartment accesses the vacuum tank 12 through third pipeline 11；
The top of the vacuum tank 12 is additionally provided with vacuum meter 13 for detecting vacuum degree in tank body, for adjusting vacuum condition in tank
Vacuum release valve 14, electric contact oil level indicator 15 is installed on 12 side of vacuum tank for detecting innage, vacuum tank 12
Top is also equipped with vacuum-pumping tube, and the other end of vacuum-pumping tube is connected to the import of vacuum pump 16；Vacuum pump for vacuumizing
16 and the electric contact oil level indicator 15 for detecting innage；The vacuum tank is through the 4th pipeline 17 and electromagnetic oil out
Valve 21 accesses the oil outlet pump；Dielectric strength sensor 18, spy are respectively arranged in the through-hole that the 4th pipeline side opens up
Levy gas sensor 19 and trace moisture sensor 20；The oil outlet pump through flow tee pipe 29 respectively with circulation solenoid
28 and corrected oil outlet solenoid valve 27 be connected；The circulation solenoid accesses the recycle oil through transformer oil circulation pipe 26
Tank；The oil-feed pump, oil inlet solenoid valve, safety valve, microwave generator, temperature sensor, vacuum meter, vacuum release valve, electricity connect
Point oil level indicator, dielectric strength sensor, characteristic gas sensor, trace moisture sensor, goes out solenoid, is fuel-displaced vacuum pump
Pump, circulation oil tank delivery valve, corrected oil outlet solenoid valve, circulation solenoid are connected to a control module；
Further include following steps:
Step S1: in advance by transformer oil quality control index parameter, comprising: transformer oil micro-water content pre-set level, insulation
Intensity pre-set level, characteristic gas content pre-set level, the first default oil level in vacuum tank, the second default oil level in vacuum tank,
Third presets oil level, shields temperature threshold and pressure index in heating compartment in vacuum tank, inputs the control module, and automatic
Control operation；Characteristic gas includes: hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide.
Step S2: the circulation oil tank delivery valve, oil inlet solenoid valve, oil inlet are opened by the control module in order
Pump, vacuum pump and microwave generator are filtered, at microwave heating and vacuum dehydration degassing the transformer oil for entering system
Reason；The Microwave emission rifle carries out uniform penetrability heating to the transformer oil for entering the shielding heating compartment and removes moisture；
Step S3: when electric contact oil level indicator detects oil inlet to the first default oil level, control module unlatching circulation solenoid,
The oil of vacuum tank out is returned in circulation oil tank through transformer oil circulation pipe and is carried out at circulation by solenoid and oil outlet pump out
Reason, while vacuum tank being kept to balance into and out of oil；
Step S4: when the data that dielectric strength sensor, characteristic gas sensor, trace moisture sensor detect meet it is pre-
If when index, control module automatically turns on corrected oil outlet solenoid valve, circulation solenoid is simultaneously closed off, corrected oil out is started；
When there is one pre-set level is not achieved, control module opens circulation solenoid, closes corrected oil outlet solenoid valve, continues to follow
Ring processing；
Step S5: when oil temperature reaches temperature threshold in the shielding heating compartment, control module is turned down micro- by microwave generator
The Microwave emission intensity of wave ejecting gun, or close microwave generator；When oil temperature is not up to temperature threshold in the shielding heating compartment
When, control module improves the Microwave emission intensity of Microwave emission rifle by microwave generator；
Step S6: when oil level reaches the second default oil level in vacuum tank, control module turns down the frequency of oil-feed pump, reduces oil inlet
Amount improves the frequency of oil outlet pump, improves oil pump capacity；If oil level is not up to the second default oil level in vacuum tank, control module is mentioned
The frequency of high oil-feed pump improves oil inlet quantity, reduces the frequency of oil outlet pump, reduces oil pump capacity；
Step S7: when pressure reaches setting value, safety valve opens pressure release, and when pressure is down to setting value, safety valve restores to close
State；
Step S8: oil processing work finishes, and closes in order: microwave generator, oil inlet solenoid valve, vacuum pump, oil-feed pump；To true
When oil level drops to third and presets oil level in slack tank, oil outlet pump, corrected oil outlet solenoid valve and oil circulating pump solenoid valve are closed, is closed
Closed loop tank delivery valve opens vacuum release valve and destroys system vacuum, when vacuum meter is without vacuum degree, closes vacuum release valve；
Step S9: closing control module, and work terminates.
In order to allow those skilled in the art to further appreciate that technical solution proposed by the present invention, combined with specific embodiments below
It is illustrated.
In the present embodiment, an intelligent microwave vacuum flush system is provided, comprising: transformer oil microwave selective heating system
System, on-line monitoring system, control module and vacuum flush system, oil circulating system, into and out of oily device and connecting pipe etc..
Transformer oil microwave selective heating system includes: filter, shielding heating compartment, microwave generator, temperature sensing
Device, Microwave emission rifle etc..
On-line monitoring system includes: transformer oil micro-water content sensor, transformer oil dielectric strength sensor, transformer
Oily characteristic gas content level sensor etc..
Control module includes frequency converter and carries out intelligence to transformer's oil-treatment device according to the program for presetting programming
Control processing.
Vacuum flush system includes: vacuum pump, vacuum tank, vacuum release valve etc..
It include: into and out of oil pump, into and out of solenoid, electric contact oil level indicator, safety valve etc. into and out of oily device.
Oil circulating system includes circulation oil tank, transformer oil circulation pipe, circulating electromagnetic valve etc..
Further, it recycles and is connected with circulation oil tank delivery valve between oil tank and oil inlet pump inlet, the outlet of oil-feed pump connects
Solenoid is tapped into, and is connected to filter oil inlet with first pipe, filter oil outlet is connected to screen by second pipe
The oil inlet for covering heating compartment, the oil outlet for shielding heating compartment are connected to vacuum tank oil inlet by third pipeline, and vacuum tank is fuel-displaced
Mouth is connected to fuel-displaced pump inlet by the 4th pipeline and out solenoid, and fuel-displaced pump discharge is connected with flow tee pipe, tee tube
Straight-tube portion be connected with corrected oil outlet solenoid valve, the manifold portion of tee tube is connected with circulation solenoid, recycle oil electricity
Magnet valve at the top of circulation pipe and transformer oil circulating tank by connecting.The air entry of vacuum pump is connected to the bleeding point of vacuum tank.
Further, electric contact oil level indicator, electric contact vacuum meter, temperature sensor, transformer oil micro-water content sensor,
The output end of transformer oil dielectric strength sensor, transformer oil characteristic gas content level sensor etc. is electrically connected in control
The input terminal of module, the output end of control module is electrically connected in microwave emitter, into and out of solenoid, into and out of oil
Pump, frequency-variable controller, the input terminal of vacuum pump, vacuum release valve etc..
Further, control module can be PLC or other microprocessors, and control module is according to the journey for presetting programming
The above-mentioned transformer's oil-treatment device of ordered pair carries out intelligent control processing.
Further, transformer oil microwave selective heating system include: filter, shielding heating compartment, microwave generator,
Temperature sensor, microwave controller etc..Microwave generator is fitted with multiple Microwave emission rifles, and each Microwave emission rifle respectively penetrates screen
Heating compartment outer wall is covered, into inner cavity, and is uniformly installed on inner cavity top, the microwave energy that microwave generator generates is uniform respectively
It is delivered to each ejecting gun, emitting microwave radiation to the transformer oil entered in shielding heating compartment by ejecting gun can be carried out heating,
The appearance interlayer of shielding heating compartment is the material manufacture that can be shielded barrier microwave and leak, and temperature sensing probe passes through shielding heating compartment
Top exterior walls, and go deep into the transformer oil for shielding heating compartment, thermometric is carried out to the transformer oil of shielding heating compartment and signal passes
It is defeated.
Further, the oil to be processed for recycling oil tank, squeezes into filter by oil-feed pump, mechanical admixture in oil is removed,
It is filtered oil enter shielding heating compartment, open microwave generator emit microwave, due to transformer oil be nonpolarity or polarity very
Small substance, and contained humidity is polar substances in transformer oil, microwave energy penetrates nonpolar transformer oil, selective first
Acutely oscillation heating removing is carried out to contained humidity in transformer oil, it is then whole to heated the transformation flowed through in heating compartment
Device oil.
Further, on-line monitoring system includes: transformer oil micro-water content sensor, transformer oil dielectric strength sensing
Device, transformer oil characteristic gas content level sensor etc..Transformer oil micro-water content sensor, transformer oil dielectric strength sensing
Device, transformer oil characteristic gas content level sensor etc. be mounted on vacuum tank oil outlet the 4th pipeline and out solenoid it
Between, sensor probe passes through tube wall and gos deep into transformer oil, and the above detecting line sensor can be to through transformer oil intelligence
Treated that transformer oil carries out on-line checking respectively for microwave vacuum processing unit, and will test data and be transmitted to control module,
Intelligent control operation is carried out according to the program for pre-entering parameter setting programming by control module.
Further, vacuum flush system includes: vacuum pump, vacuum tank, vacuum meter, vacuum release valve etc., is added by shielding
The carrying steam heat transformer oil that hot cabin is come, enters vacuum tank with film-form, under vacuum conditions rapidly by Residual water and
The steam of entrainment, is taken away by vacuum pump, after the completion of vacuumizing work, need to open vacuum release valve, system vacuum is destroyed, extensive
It after multiple normal pressure, could shut down, vacuum meter is for monitoring vacuum tank vacuum degree.
Further, oil circulating system includes circulating tank, delivery valve, circulation solenoid and circulation pipe, recycles oil tank
Lower part is equipped with delivery valve, and delivery valve is connect by pipeline with oil inlet pump inlet, and the top for recycling oil tank is equipped with circulating pipe
Import can be returned in circulating tank when also index is not achieved in single treatment transformer oil by the circulation pipe of flow tee, then
Secondary or multiple circular treatment is carried out, until whole qualifieds, then the corrected oil outlet solenoid valve through threeway are got.
Further, control module includes control module and frequency converter, by designer in advance by transformer oil quality control
Index parameter processed, comprising: transformer oil micro-water content, dielectric strength, characteristic gas content (power system transformer oil feature gas
Body are as follows: this 7 kinds of characteristic gas such as hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide) etc. design programmings input
Control module, when handled oil quality is poor, when each sensor Testing index is not seriously up to standard, control module controls transformer
Oily intelligent microwave vacuum treatment installation increases power output, including increase microwave radiation, increase vacuum pump power output etc., vice versa.Control
Molding block, which is also preset, to be programmed with: when oil level rises to setting value, oil-feed pump is automatically closed in oil level, pressure Con trolling index etc.
It is reopened with oil inlet solenoid valve when oil level is down to setting value.When system pressure reaches setting value, safety valve is controlled
Pressure release, to guarantee system safety.Frequency converter is controlled by control module, enables vacuum pump and into and out of oil pump according to load and processing
The degree converting operation of oil quality, when load is big, oil quality is poor, frequency is increased, and vice versa.
Further, a kind of transformer oil intelligent microwave vacuum processing method is specific as follows:
1) by designer in advance by transformer oil quality control index parameter, comprising: transformer oil micro-water content, insulation are strong
Degree, characteristic gas content (power system transformer oil characteristic gas are as follows: hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide,
This 7 kinds of characteristic gas such as carbon dioxide) etc. design programmings input control module, automatically controlled according to the case where processing transformer oil
Operation；
2) control module also presets and is programmed with: oil level, pressure Con trolling index etc., automatic to close when oil level rises to setting value
Oil-feed pump 1 and oil inlet solenoid valve 2 are closed, when oil level is down to setting value, is reopened.When system pressure reaches setting value,
5 pressure release of safety valve is controlled, to guarantee system safety；
3) delivery valve 25, oil inlet solenoid valve 2, oil-feed pump 1, vacuum pump 16 and the microwave generator of circulation oil tank 24 are opened in order
8, start to be filtered the transformer oil for entering device, microwave heating and vacuum dehydration degassing process, Microwave emission rifle 8 into
The transformer oil for entering to shield heating compartment 7 carries out uniform penetrability heating and removes moisture；
4) it when oil level is arranged in oil inlet to 12 oil level indicator 15 of vacuum tank, opens circulation solenoid 28, go out solenoid 21, open
The oil of vacuum tank 12 out is returned through circulation pipe 26 and carries out circular treatment in circulating tank 24, while keeping vacuum tank by oil outlet pump 22
12 balance into and out of oil；
5) when transformer oil dielectric strength sensor 18, transformer oil characteristic gas content level sensor 19, the micro- water of transformer oil contain
When 20 Testing index of quantity sensor is all qualified, control module automatically turns on corrected oil outlet solenoid valve 27, simultaneously closes off recycle oil
Solenoid valve 28 starts corrected oil out；
6) when index has one setting value is not achieved, control module automatically turns on circulation solenoid 28, closes qualified oil export
Solenoid valve 27 continues cycling through processing；
7) when oil temperature reaches setting value in shielding heating compartment 7, control module automatically turns down Microwave emission intensity, or closes microwave
Generator 8, vice versa；
8) when oil level reaches setting value in vacuum tank 12, control module automatically turns down the frequency of oil-feed pump 1, reduces oil inlet quantity, instead
?；
9) when system pressure reaches setting value, safety valve 5 opens pressure release, and when pressure is down to setting value, safety valve 5 restores to close
State；
10) when 12 oil level of vacuum tank drops to setting value, control module, which automatically controls oil outlet pump 22, reduces frequency, and reduction is fuel-displaced,
It is automatic to restore frequency operation after oil level indicator reaches setting value；
11) oil processing work finish, in order close: microwave generator 8, oil inlet solenoid valve 2, vacuum pump 16, oil-feed pump 1, to
When oil level drops to setting value in vacuum tank 12, oil outlet pump 22 and corrected oil outlet solenoid valve 27(oil circulating pump solenoid valve 28 are closed
Also need to close), circulating tank delivery valve 25 is closed, vacuum release valve 14 is opened and destroys system vacuum, to vacuum meter 13 without vacuum degree
When, close vacuum release valve 14；
12) control module is closed, work terminates.
A kind of transformer oil intelligent microwave vacuum processing method proposed by the present invention, for the non-polar nature of transformer oil
The design of microwave generator, shielding heating compartment and auxiliary facility is provided with internal contained humidity for the characteristics of polar molecule；It will
Microwave polar molecule oscillation heating process is combined with transformer oil vacuum dehydration degasification technique, and design microwave oscillation vacuumizes filter
Oily device；Frequency-changing control system is applied in processing unit, when transformer oil moisture content is more, poor quality when, processing unit
Output is big, and vice versa, reaches efficient, environmentally friendly purpose；Mating intelligent automatic-control device, intelligent control operation.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (2)
1. a kind of transformer oil intelligent microwave vacuum processing method, which is characterized in that an intelligent microwave vacuum flush system is provided,
It include: circulation oil tank, oil-feed pump, filter, shielding heating compartment, vacuum tank and oil outlet pump；The circulation oil tank is through recycle oil
Tank delivery valve accesses the oil-feed pump；The oil-feed pump accesses the filter through oil inlet solenoid valve and first pipe；It is described
Filter top is additionally provided with safety valve；The filter accesses the shielding heating compartment through second pipe；The shielding heating
It is separately provided for providing the Microwave emission rifle of microwave heating function, the Microwave emission in multiple through-holes that cabin top opens up
Rifle is connected to a microwave generator；The temperature for detecting interior temperature in shielding heating compartment is additionally provided in the shielding heating compartment
Spend sensor；The shielding heating compartment accesses the vacuum tank through third pipeline；The top of the vacuum tank, which is additionally provided with, to be used for
Vacuum meter, the vacuum release valve for adjusting vacuum condition in tank of vacuum degree in tank body are detected, electric contact oil level indicator is installed on
Vacuum tank side is also equipped with vacuum-pumping tube, the other end of vacuum-pumping tube connects for detecting innage at the top of vacuum tank
It is connected to the import of vacuum pump；Through the 4th pipeline and out, solenoid accesses the oil outlet pump to the vacuum tank；4th pipe
Dielectric strength sensor, characteristic gas sensor and trace moisture sensor are respectively arranged in the through-hole that road side opens up；
The oil outlet pump is connected with circulation solenoid and corrected oil outlet solenoid valve respectively through flow tee pipe；The recycle oil electricity
Magnet valve accesses the circulation oil tank through transformer oil circulation pipe；The oil-feed pump, oil inlet solenoid valve, safety valve, microwave generator,
Temperature sensor, vacuum meter, vacuum release valve, electric contact oil level indicator, vacuum pump, dielectric strength sensor, characteristic gas sensing
Device, trace moisture sensor go out solenoid, oil outlet pump, circulation oil tank delivery valve, corrected oil outlet solenoid valve, recycle oil electricity
Magnet valve is connected to a control module；
Further include following steps:
Step S1: in advance by transformer oil quality control index parameter, comprising: transformer oil micro-water content pre-set level, insulation
Intensity pre-set level, characteristic gas content pre-set level, the first default oil level in vacuum tank, the second default oil level in vacuum tank,
Third presets oil level, shields temperature threshold and pressure index in heating compartment in vacuum tank, inputs the control module, and automatic
Control operation；
Step S2: the circulation oil tank delivery valve, oil inlet solenoid valve, oil-feed pump, true is opened by the control module in order
Sky pump and microwave generator, are filtered the transformer oil for entering system, microwave heating and vacuum dehydration degassing process；It is described
Microwave emission rifle carries out uniform penetrability heating to the transformer oil for entering the shielding heating compartment and removes moisture；
Step S3: when electric contact oil level indicator detects oil inlet to the first default oil level, control module unlatching circulation solenoid,
The oil of vacuum tank out is returned in circulation oil tank through transformer oil circulation pipe and is carried out at circulation by solenoid and oil outlet pump out
Reason, while vacuum tank being kept to balance into and out of oil；
Step S4: when the data that dielectric strength sensor, characteristic gas sensor, trace moisture sensor detect meet it is pre-
If when index, control module automatically turns on corrected oil outlet solenoid valve, circulation solenoid is simultaneously closed off, corrected oil out is started；
When there is one pre-set level is not achieved, control module opens circulation solenoid, closes corrected oil outlet solenoid valve, continues to follow
Ring processing；
Step S5: when oil temperature reaches temperature threshold in the shielding heating compartment, control module is turned down micro- by microwave generator
The Microwave emission intensity of wave ejecting gun, or close microwave generator；When oil temperature is not up to temperature threshold in the shielding heating compartment
When, control module improves the Microwave emission intensity of Microwave emission rifle by microwave generator；
Step S6: when oil level reaches the second default oil level in vacuum tank, control module turns down the frequency of oil-feed pump, reduces oil inlet
Amount improves the frequency of oil outlet pump, improves oil pump capacity；If oil level is not up to the second default oil level in vacuum tank, control module is mentioned
The frequency of high oil-feed pump improves oil inlet quantity, reduces the frequency of oil outlet pump, reduces oil pump capacity；
Step S7: when pressure reaches setting value, safety valve opens pressure release, and when pressure is down to setting value, safety valve restores to close
State；
Step S8: oil processing work finishes, and closes in order: microwave generator, oil inlet solenoid valve, vacuum pump, oil-feed pump；To true
When oil level drops to third and presets oil level in slack tank, oil outlet pump, corrected oil outlet solenoid valve and oil circulating pump solenoid valve are closed, is closed
Closed loop tank delivery valve opens vacuum release valve and destroys system vacuum, when vacuum meter is without vacuum degree, closes vacuum release valve；
Step S9: closing control module, and work terminates.
2. a kind of transformer oil intelligent microwave vacuum processing method according to claim 1, which is characterized in that characteristic gas
It include: hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide.
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Cited By (4)
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| CN113350869A (en) * | 2021-06-03 | 2021-09-07 | 国网江苏省电力有限公司南通供电分公司 | Transformer oil filtering control system and control method thereof |
| CN113963924A (en) * | 2021-11-03 | 2022-01-21 | 淄博丰正工贸有限公司 | Transformer with hydrogen content abnormity detection function |
| CN114217652A (en) * | 2021-11-29 | 2022-03-22 | 国家电网有限公司 | Automatic control method for processing insulation oil of extra-high voltage converter station |
| CN116173557A (en) * | 2022-12-08 | 2023-05-30 | 国网重庆市电力公司电力科学研究院 | Transformer oil paper insulation water content dewatering device and control method thereof |
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| CN113350869A (en) * | 2021-06-03 | 2021-09-07 | 国网江苏省电力有限公司南通供电分公司 | Transformer oil filtering control system and control method thereof |
| CN113963924A (en) * | 2021-11-03 | 2022-01-21 | 淄博丰正工贸有限公司 | Transformer with hydrogen content abnormity detection function |
| CN114217652A (en) * | 2021-11-29 | 2022-03-22 | 国家电网有限公司 | Automatic control method for processing insulation oil of extra-high voltage converter station |
| CN114217652B (en) * | 2021-11-29 | 2023-01-20 | 国家电网有限公司 | Automatic control method for processing insulation oil of extra-high voltage converter station |
| CN116173557A (en) * | 2022-12-08 | 2023-05-30 | 国网重庆市电力公司电力科学研究院 | Transformer oil paper insulation water content dewatering device and control method thereof |
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