CN107362609B - Natural ester insulating oil vacuum oil filtering device - Google Patents
Natural ester insulating oil vacuum oil filtering device Download PDFInfo
- Publication number
- CN107362609B CN107362609B CN201710654048.8A CN201710654048A CN107362609B CN 107362609 B CN107362609 B CN 107362609B CN 201710654048 A CN201710654048 A CN 201710654048A CN 107362609 B CN107362609 B CN 107362609B
- Authority
- CN
- China
- Prior art keywords
- oil
- vacuum
- pipeline
- electromagnetic valve
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- B01D36/003—Filters in combination with devices for the removal of liquids
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0058—Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
Abstract
The invention belongs to the field of insulating oil filtration, and particularly discloses a vacuum oil filtering device for natural ester insulating oil, which comprises a main oil tank, a prefilter, a coalescing filter, a fine filtration filter, an adsorption filter, a vacuum separator and a vacuum system, wherein all the devices are communicated through pipelines; the device can meet the oil filtering requirement of the natural ester insulating oil produced by the refining process, can also meet the requirements of filtering, purifying, improving the performance and the like of the polluted natural ester insulating oil, has small occupied area of the whole system, is safe and reliable, has low operation cost, and is easy for industrialized popularization.
Description
Technical Field
The invention belongs to the field of insulating oil filtration, and particularly relates to a vacuum oil filtering device for natural ester insulating oil.
Background
The vacuum oil filtering device is mainly used for removing moisture, solid particles, volatile substances, polar substances and the like in insulating oil, can effectively improve the physical, chemical and electrical properties of the insulating oil, is common equipment for producing the mineral insulating oil and retreating the polluted mineral insulating oil, and is mature in application.
As a novel environment-friendly liquid insulating medium with high ignition point, the biodegradation rate of the natural ester insulating oil reaches more than 97%, the ignition point is higher than 300 ℃, and the insulating oil has good fireproof safety performance, is considered as a good substitute of mineral insulating oil, and has been well applied to power transformers at present. However, the existing traditional mineral insulating oil filtering system is not suitable for the novel natural ester insulating oil. The main component of the natural ester insulating oil is triglyceride, and molecules of the natural ester insulating oil contain hydrophilic groups such as hydroxyl and carbonyl, so that the natural ester insulating oil has stronger hydrophilicity than the mineral insulating oil. At room temperature, the saturated water content of the natural ester insulating oil is about 20 times that of the mineral insulating oil. Moreover, the natural ester insulating oil has relatively high kinematic viscosity and density, and further increases the separation difficulty of water and impurity particles in the oil. In addition, due to the difference of the refining process of the natural ester insulating oil, when the final process is water washing, the moisture content of the natural ester insulating oil is 6000ppm and the moisture and impurities in the natural ester insulating oil cannot be effectively removed by the conventional oil filter.
Chinese patent publication No. CN204337838U discloses a coalescence oil filter device with ultrasonic demulsification, which comprises an oil inlet valve, a coarse filter, an oil pump station, a heating and ultrasonic demulsification device, a coalescence separator, a water drain valve, a fine filter, an oil outlet valve and a pipeline which are connected. The method is characterized in that: after being filtered by the coalescence oil filter with ultrasonic demulsification, the oil liquid can effectively remove moisture and impurities in the oil liquid. The device has simple equipment, enhances the demulsification function by using ultrasonic waves, effectively removes impurities such as solid particles, water and the like in the oil by using a mode of multiple filtration and oil-water coalescence separation, recovers the service performance of the polluted oil, prolongs the service life of the oil and has obvious advantages. However, the patent can not make the natural ester insulating oil with high saturated water content meet the requirements of relevant standards on the water content, the oxidation stability of the natural ester insulating oil is poor, and the natural ester insulating oil is oxidized by heating under a non-vacuum condition, so that the quality of the insulating oil is deteriorated.
Chinese patent publication No. CN204865087U discloses an energy-saving vacuum oil filter, which comprises an oil inlet, an oil inlet pump, a heat exchanger low-temperature oil inlet, a low-temperature oil outlet, a high-temperature oil inlet, a high-temperature oil outlet, an oil inlet electromagnetic valve, a heater, a vacuum separation chamber, an oil outlet pump, a high-temperature oil inlet, a high-temperature oil outlet, a filtering system, an oil outlet electromagnetic valve and an oil outlet which are connected in sequence, wherein when low-temperature oil passes through the heat exchanger, the energy-saving vacuum oil filter adopting the technical scheme is heated by the high-temperature oil in advance, so that the power consumed by a subsequent heater is reduced, and the requirements on a power supply, a cable and the like provided by an oil filter heater are reduced; when high-temperature oil passes through the heat exchanger, the temperature is reduced through heat exchange and heat dissipation, and after the cooled oil is discharged into oil consumption equipment or an oil storage tank, the service life of the oil consumption equipment and the service life of the oil storage tank can be relatively prolonged, and meanwhile, the quality of oil products, particularly lubricating oil, can be improved, and the viscosity and the lubricating effect of the lubricating oil can be improved. This patent is not applicable to the natural ester insulating oil of high water content, and when the water content was too high, higher vacuum degree could not be guaranteed to vacuum oil strain initial stage, and can cause certain injury to the vacuum pump.
Chinese patent publication No. CN106310717A discloses an oil filtering process for reducing moisture of plant insulating oil, which comprises the following steps: (1) pumping the plant insulating oil with the moisture content of more than 100ppm into a vacuum tank, stirring the plant insulating oil at the rotating speed of 55r/min for 70min, pumping the plant insulating oil into a coalescence dehydration oil filter at the flow rate of 25L/min, and circulating for 3-4h by virtue of a coalescence filter element and a separation filter element; (2) repeatedly passing the vegetable insulating oil obtained in the step (1) through a fine filtration filter element with the aperture of 3 mu m, and circularly dehydrating for 6 hours; (3) and (3) pumping the vegetable insulating oil obtained in the step (2) into a vacuum dehydration tank, stirring at the rotating speed of 40r/min, cooling for 5 hours by a condensing coil pipe of normal-temperature pure water, and storing. The oil content of the plant insulating oil prepared by the technical scheme of the invention is lower than 30ppm, the change degree of the electrical and physical properties is small, and the oil quality standard of the GB/T7595-. This patent only can effectively get rid of the moisture in the vegetable insulating oil, but its essence filters the filter core aperture great, and it is relatively poor to get rid of the solid particle in the vegetable insulating oil and polar substance effect, can not effectively improve the electrical insulation performance of vegetable insulating oil, also can not satisfy the needs such as contaminated natural ester insulating oil filtration, purification, promotion performance.
Chinese patent publication No. CN104987949A discloses an improved treatment method of vegetable insulating oil, comprising the following steps: (1) coalescence dehydration treatment; (2) carrying out vacuum dehydration treatment; (3) stirring under vacuum, and filtering. The water content of the vegetable insulating oil treated by the improved treatment method is less than 50mg/kg, and the number of impurity particles with the particle size of more than 5 mu m in 100ml of oil is less than or equal to 2000. However, the loss of the additive in the filtering process of the vegetable insulating oil is not considered in the process, and a certain amount of additive should be properly supplemented to ensure the performances of the vegetable insulating oil, such as oxidation stability, low-temperature fluidity and the like, while filtering the oil.
Disclosure of Invention
In view of the above, the present invention provides a vacuum oil filtering apparatus for natural ester insulating oil, which can meet the oil filtering requirements of natural ester insulating oil produced by a refining process, and also can meet the requirements of filtering, purifying, improving performance and the like of polluted natural ester insulating oil.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vacuum oil filtering device for natural ester insulating oil comprises a main oil tank, a prefilter, a coalescing filter, a fine filter, an adsorption filter, a vacuum separator and a vacuum system, wherein all the devices are communicated through pipelines;
an additive feeding pipeline and an oil inlet pipeline are respectively arranged on the side edge of the upper part of the main oil tank, an additive feeding electromagnetic valve is arranged on the additive feeding pipeline, the oil inlet pipeline is communicated with an oil inlet branch, and an oil inlet electromagnetic valve is arranged on the oil inlet branch; the bottom of the main oil tank is respectively communicated with an oil outlet pipeline and a coalescence oil conveying pipeline, the oil outlet pipeline is provided with an oil outlet electromagnetic valve, and the coalescence oil conveying pipeline is sequentially provided with a coalescence oil conveying variable frequency pump inlet electromagnetic valve, a coalescence oil conveying variable frequency pump, a manual sampling valve, a coalescence oil conveying variable frequency pump outlet electromagnetic valve, a prefilter and a coalescence filter; the outlet of the coalescence filter is provided with a coalescence outlet electromagnetic valve and is communicated with an oil inlet pipeline through a coalescence output pipeline;
a coalescence oil conveying pipeline between the manual sampling valve and the coalescence oil conveying variable frequency pump outlet valve is communicated with the top end of the vacuum separator through a vacuum filtering main pipeline; the vacuum filtering main pipeline is sequentially provided with a #2 middle electromagnetic valve and a bypass electromagnetic valve, two ends of the bypass electromagnetic valve are connected with two pipelines, namely a fine filtering pipeline and an adsorption pipeline in parallel, outlets of the fine filtering pipeline and the adsorption pipeline are connected with the #1 middle electromagnetic valve in series and then communicated with the vacuum filtering main pipeline, and inlets of the fine filtering pipeline and the adsorption pipeline are positioned at two ends of the #2 middle electromagnetic valve; a fine filtration filter is arranged on the fine filtration pipeline, a fine filtration inlet electromagnetic valve and a fine filtration outlet electromagnetic valve are respectively arranged at an inlet and an outlet of the fine filtration filter, an adsorption filter is arranged on the adsorption pipeline, and an adsorption inlet electromagnetic valve and an adsorption outlet electromagnetic valve are respectively arranged at an inlet and an outlet of the adsorption filter;
the top end of the vacuum separator is communicated with the top end of the main oil tank through a vacuum pipeline, a main oil tank vacuum electromagnetic valve and a vacuum separator vacuum electromagnetic valve are sequentially arranged on the vacuum pipeline in the direction far away from the main oil tank, and the vacuum pipeline between the main oil tank vacuum electromagnetic valve and the vacuum separator vacuum electromagnetic valve is communicated with the vacuum system through a vacuum branch; the bottom of the vacuum separator is communicated with an oil inlet pipeline through a vacuum filtering outlet pipeline, and a vacuum oil delivery variable frequency pump and a vacuum filtering outlet electromagnetic valve are arranged on the vacuum filtering outlet pipeline.
Furthermore, an ultrasonic vibration rod, a pressure relief electromagnetic valve, a variable frequency motor, a vacuum meter and an electric heating rod are respectively arranged at the top of the main oil tank, the variable frequency motor is positioned at the center of the top of the main oil tank, and a liquid level meter is arranged on the side wall of the main oil tank; the variable frequency motor penetrates through one end of the main oil tank and is provided with a stirring paddle, and the stirring paddle consists of an inclined blade type blade and a frame type blade.
Furthermore, ultrasonic vibration stick and electric heating rod symmetry interval install main oil tank top, and be in main oil tank inner wall is fixed.
Further, the length of the ultrasonic vibration rod is the same as that of the electric heating rod, and the ultrasonic vibration rod is located 2-5cm above the frame type paddle.
Further, the lower end of the coalescence filter is communicated with a water collector, and a drain valve is installed at the bottom of the water collector.
Further, vacuum separator includes rotation type stainless steel ball type deconcentrator, circular peep mirror and liquid level protection device, rotation type stainless steel ball type deconcentrator is installed and is stretched into the vacuum filtration main line end at vacuum separator top, circular peep mirror is in with the sealed setting of liquid level protection device the vacuum separator lateral part, just liquid level protection device is linked together with vacuum separator is inside.
Furthermore, the filter element pore size of the fine filter and the filter element pore size of the adsorption filter are 0.5-0.75 mu m.
Furthermore, the fine filter and the adsorption filter are connected into a system for use.
Furthermore, the fine filter and the adsorption filter are connected in series or in parallel to a system for use.
Furthermore, the liquid level protection device is connected with the frequency converter of the coalescence oil transportation variable-frequency pump and the frequency converter of the vacuum oil transportation variable-frequency pump, and controls the flow rate and the start and stop of the coalescence oil transportation variable-frequency pump and the vacuum oil transportation variable-frequency pump through interlocking frequency conversion.
The invention has the beneficial effects that:
(1) because the natural ester insulating oil has additive loss in the process of filtration or dehydration, and the like, the commonly used additives comprise an antioxidant, a pour point depressant or a metal passivator, and the reduction of the additives can influence the oxidation stability, the low-temperature fluidity and the like of the natural ester insulating oil, an additive feeding pipe is arranged on the side edge of the upper part of the main oil tank for supplementing the additives so as to ensure the stable quality of the natural ester insulating oil.
(2) According to the invention, the stirring paddle and the ultrasonic vibration rod are arranged in the main oil tank, so that mechanical stirring and ultrasonic vibration can be realized simultaneously, the mechanical stirring can ensure that water and impurities in the natural ester insulating oil are uniformly distributed, and the ultrasonic waves can effectively improve the emulsion breaking capacity during coalescence dehydration and greatly improve the efficiency of coalescence dehydration; the dehydration time is shortened, the dehydration flow rate can be properly reduced, and the problems of oil flow electrification and the like caused by the over-high flow rate of the natural ester insulating oil can be effectively avoided.
In addition, when the additive is added into the natural ester insulating oil, the ultrasonic oscillation can effectively improve the dispersion degree of the additive in the natural ester insulating oil. The mode of mechanical stirring and ultrasonic oscillation is adopted, so that the problem of uneven dispersion of single mechanical stirring can be avoided, and C generated in the natural ester insulating oil due to overlong ultrasonic oscillation time can be avoided 2 H 2 And too high a total hydrocarbon content.
(3) The fine filter and the adsorption filter introduced by the invention can be used singly or in series or in parallel, and both adopt small-aperture filter elements of 0.5-0.75 mu m, so that solid particles and polar substances in the insulating oil can be effectively removed, and the physical, chemical and electrical properties of the natural ester insulating oil are improved.
(4) The vacuum separator adopts the rotary stainless steel ball type disperser, the oil drop dispersing effect is better than that of the existing oil drop dispersing device, and the dehydration effect of the natural ester insulating oil in the vacuum separating chamber can be greatly improved; in addition, the vacuum separation chamber adopts a liquid level protection device, the device is connected with a coalescence oil transportation variable frequency pump and a vacuum oil transportation variable frequency pump frequency converter, and the liquid level in the vacuum separation chamber can be prevented from being too high through chain variable frequency control of the coalescence oil transportation variable frequency pump and the vacuum oil transportation variable frequency pump, so that the dehydration effect is poor, and the phenomenon that insulating oil enters a vacuum system to cause the vacuum pump to be polluted and damaged can also be avoided. Meanwhile, the condition that the oil delivery pump idles due to the fact that the oil level of the vacuum separation chamber is too low can be effectively avoided through interlocking frequency conversion.
(5) The invention effectively combines the processes of coalescence dehydration, vacuum dehydration, fine filtration, adsorption filtration, additive addition and the like to form a whole set of natural ester insulating oil vacuum oil filtering device, which can meet the requirements of natural ester insulating oil filtering produced by a refining process and the requirements of filtering, purifying, performance improving and the like of polluted natural ester insulating oil, and the whole system has the advantages of small occupied area, safety, reliability, low operation cost and easy industrial popularization.
Drawings
Fig. 1 is a schematic structural diagram of embodiments 1, 2 and 3 of the present invention.
In the figure: 1-additive feeding electromagnetic valve, 2-main oil tank, 3-ultrasonic vibration rod, 4-pressure relief electromagnetic valve, 5-variable frequency motor, 6-vacuum meter, 7-electric heating rod, 8-main oil tank vacuum electromagnetic valve, 9-liquid level meter, 10-vacuum separator vacuum electromagnetic valve, 11-rotary stainless steel ball disperser, 12-circular sight glass, 13-liquid level protection device, 14-vacuum separator, 15-vacuum oil transfer variable frequency pump, 16-vacuum filtration outlet electromagnetic valve, 17-fine filtration outlet electromagnetic valve, 18-adsorption outlet electromagnetic valve, 19-adsorption filter, 20-bypass electromagnetic valve, 21-adsorption inlet electromagnetic valve, 22-fine filtration inlet electromagnetic valve, 23-fine filtration filter, 24-coalescence filter, 25-coalescence outlet electromagnetic valve, 26-prefilter, 27-coalescence oil transportation variable frequency pump outlet electromagnetic valve, 28-water collector, 29-bottom installation drain valve, 30-oil inlet electromagnetic valve, 31-manual sampling valve, 32-coalescence oil transportation variable frequency pump, 33-oil outlet electromagnetic valve, 34-coalescence oil transportation variable frequency pump inlet electromagnetic valve, 35-frame paddle, 36-inclined blade paddle, 37-vacuum pump, 38- #2 middle electromagnetic valve, 39- #1 middle electromagnetic valve, 40-additive feeding pipeline, 41-oil inlet pipeline, 42-oil inlet branch, 43-oil outlet pipeline, 44-coalescence oil pipeline, 45-coalescence output pipeline, 46-vacuum filtration main pipeline, 47-fine filtration pipeline, 48-adsorption pipeline, 49-vacuum pipeline, 50-vacuum branch, 51-vacuum filtration outlet pipeline.
Detailed Description
The present invention and its advantages are further described in detail below with reference to specific embodiments and drawings, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1, a vacuum oil filtering apparatus for insulating oil of natural ester comprises a main oil tank 2, a pre-filter 26, a coalescing filter 24, a fine filter 23, an adsorption filter 19, a vacuum separator 14 and a vacuum system, wherein the vacuum system in this embodiment is a vacuum pump 37, and the devices are communicated with each other through pipelines.
An additive feeding pipeline 40 and an oil inlet pipeline 41 are respectively arranged on the side edge of the upper part of the main oil tank 2, an additive feeding electromagnetic valve 1 is arranged on the additive feeding pipeline 40 and used for controlling addition of additives, the oil inlet pipeline 41 is communicated with an oil inlet branch 42, and an oil inlet electromagnetic valve 30 is arranged on the oil inlet branch 42; the bottom of the main oil tank 2 is respectively communicated with an oil outlet pipeline 43 and a coalescence oil conveying pipeline 44, the oil outlet pipeline 43 is provided with an oil outlet electromagnetic valve 33, and the coalescence oil conveying pipeline 44 is sequentially provided with a coalescence oil conveying variable frequency pump inlet electromagnetic valve 34, a coalescence oil conveying variable frequency pump 32, a manual sampling valve 31, a coalescence oil conveying variable frequency pump outlet electromagnetic valve 27, a pre-filter 26 and a coalescence filter 24. The outlet of the coalescence filter 24 is provided with a coalescence outlet solenoid valve 25 and is communicated with the oil inlet pipeline 41 through a coalescence output pipeline 45; the coalescence oil conveying pipeline 44 between the manual sampling valve 31 and the coalescence oil conveying variable frequency pump outlet valve 27 is communicated with the top end of the vacuum separator 14 through a vacuum filtering main pipeline 46, a #2 middle electromagnetic valve 38 and a bypass electromagnetic valve 20 are sequentially arranged on the vacuum filtering main pipeline 46, two ends of the bypass electromagnetic valve 20 are connected with a fine filtering pipeline 47 and an adsorption pipeline 48 in parallel, outlets of the fine filtering pipeline 47 and the adsorption pipeline 48 are connected with a #1 middle electromagnetic valve 39 in series and then communicated with the vacuum filtering main pipeline 46, and inlets of the fine filtering pipeline 47 and the adsorption pipeline 48 are positioned at two ends of the #2 middle electromagnetic valve 38. A fine filtration pipeline 47 is provided with a fine filtration filter 23, the inlet and the outlet of the fine filtration filter 23 are respectively provided with a fine filtration inlet electromagnetic valve 22 and a fine filtration outlet electromagnetic valve 17, an adsorption pipeline 48 is provided with an adsorption filter 19, and the inlet and the outlet of the adsorption filter 19 are respectively provided with an adsorption inlet electromagnetic valve 21 and an adsorption outlet electromagnetic valve 18; wherein the pore size of the filter elements of the fine filter and the adsorption filter can be 0.5-0.75 μm, and the pore size of the filter elements of the fine filter and the adsorption filter is 0.5 μm in the embodiment.
The top end of the vacuum separator 14 is communicated with the top end of the main oil tank 2 through a vacuum pipeline 49, a main oil tank vacuum solenoid valve 8 and a vacuum separator vacuum solenoid valve 10 are sequentially arranged on the vacuum pipeline 49 in the direction far away from the main oil tank 2, and the vacuum pipeline 49 between the main oil tank vacuum solenoid valve 8 and the vacuum separator vacuum solenoid valve 10 is communicated with the vacuum pump 37 through a vacuum branch 50. The bottom of the vacuum separator 14 is communicated with the oil inlet pipeline 41 through a vacuum filtration outlet pipeline 51, and the vacuum filtration outlet pipeline 51 is sequentially provided with a vacuum oil delivery variable frequency pump 15 and a vacuum filtration outlet electromagnetic valve 16 in the direction away from the vacuum separator 14.
The top of the main oil tank 2 is provided with an ultrasonic vibration rod 3, a pressure relief electromagnetic valve 4, a variable frequency motor 5, a vacuum meter 6 and an electric heating rod 7, the variable frequency motor 5 is positioned in the center of the top of the main oil tank 2, and the side wall of the main oil tank 2 is provided with a liquid level meter 9; the variable frequency motor 5 penetrates through one end of the main oil tank 2 and is provided with a stirring paddle, the stirring paddle is composed of an inclined blade type blade 36 and a frame type blade 35, and the inclined blade type blade 36 is positioned above the frame type blade 35; ultrasonic vibration stick 3 and 7 symmetrical spaced of electrical heating rod install at 2 tops of main oil tank, and fix at 2 inner walls of main oil tank, and ultrasonic vibration stick 3 is the same with 7 length of electrical heating rod to be located frame paddle 35 top 2-5cm, and ultrasonic vibration stick 3 is located frame paddle 35 top 5cm with 7 bottoms of electrical heating rod in this embodiment, ensures promptly that mechanical stirring and ultrasonic oscillation in the main oil tank 2 are even, does not influence the stirring rake and normally works again.
The lower end of the coalescing filter 24 is communicated with a water collector 28, and the bottom of the water collector 28 is provided with a drain valve 29.
The vacuum separator 14 comprises a rotary stainless steel ball type disperser 11, a circular peep sight 12 and a liquid level protection device 13, wherein the rotary stainless steel ball type disperser 11 is installed at the tail end of a vacuum filtering main pipeline 46 extending into the top of the vacuum separator 14, the circular peep sight 12 and the liquid level protection device 13 are hermetically arranged on the side part of the vacuum separator 14, the liquid level protection device 13 is communicated with the inside of the vacuum separator 14, the liquid level protection device 13 is connected with a coalescence oil transportation variable frequency pump 32 and a vacuum oil transportation variable frequency pump 15, and the flow size and the start and stop of the coalescence oil transportation variable frequency pump and the vacuum oil transportation variable frequency pump are controlled through interlocking frequency conversion.
The invention combines the processes of coalescence dehydration, vacuum dehydration, fine filtration, adsorption filtration, additive addition and the like, each process needs sampling detection, and the next operation can be carried out when the sampling detection reaches a specified value, and the working principle and the using method of the natural ester insulating oil vacuum oil filtering device are as follows:
starting a vacuum pump 37, opening a vacuum electromagnetic valve 8, observing a vacuum meter 6 until the displayed vacuum degree meets the requirement, opening an oil inlet electromagnetic valve 30, injecting natural ester insulating oil into the main oil tank 2 through an oil inlet branch 42 and an oil inlet pipeline 41, observing a liquid level meter 9, closing the oil inlet electromagnetic valve 30 when the liquid level meter 9 displays that the liquid level meets a set value, opening a variable frequency motor 5 to drive an inclined blade type paddle 36 and a frame type paddle 35 to stir, and intermittently starting the ultrasonic vibration rod 3; meanwhile, an inlet electromagnetic valve 34 of the coalescence oil transportation variable frequency pump, an outlet electromagnetic valve 27 of the coalescence oil transportation variable frequency pump and a coalescence outlet electromagnetic valve 25 are opened, the coalescence oil transportation variable frequency pump 32 is started, the natural ester insulating oil in the main oil tank 2 flows through the pre-filter 26 and the coalescence filter 24 through a coalescence oil transportation pipeline 44, then enters the main oil tank 2 through a coalescence output pipeline 45 and an oil inlet pipeline 41, the circulation coalescence dehydration is carried out, the removed water flows into the water collector 28 and is discharged through a drain valve 29, and the manual sampling valve 31 is intermittently opened in the circulation coalescence dehydration process for sampling detection.
When the moisture in the natural ester insulating oil is detected to meet the requirement, closing the coalescence oil transportation variable frequency pump 32, the coalescence oil transportation variable frequency pump inlet electromagnetic valve 34, the coalescence oil transportation variable frequency pump outlet electromagnetic valve 27 and the coalescence outlet electromagnetic valve 25, stopping the ultrasonic vibration rod 3, starting the electric heating rod 7 to heat the natural ester insulating oil in the main oil tank 2, adjusting the electric heating rod 7 to maintain the temperature after heating to a specified temperature value, then opening the coalescence oil transportation variable frequency pump inlet electromagnetic valve 34, #2 middle electromagnetic valve 38, the bypass electromagnetic valve 20 and the vacuum filtration outlet electromagnetic valve 16, and starting the coalescence oil transportation variable frequency pump 32 to spray the natural ester insulating oil into the vacuum separator 14 through the rotary stainless steel ball disperser 11 connected with the tail end of the vacuum filtration main pipeline 46 for vacuum dehydration; the dehydration condition in the vacuum separator 14 is observed through the circular sight glass 12, the liquid level protection device 13 and the vacuum oil delivery variable frequency pump 15 are started, the natural ester insulating oil after vacuum dehydration is delivered into the main oil tank 2 through the vacuum filtration outlet pipeline 51 and the oil inlet pipeline 41 for circulating vacuum dehydration, and the manual sampling valve 31 is intermittently opened for sampling detection.
When the moisture in the natural ester insulating oil is detected to meet the required value, opening a fine filtration inlet electromagnetic valve 22, a fine filtration outlet electromagnetic valve 17, an adsorption outlet electromagnetic valve 18 and an adsorption inlet electromagnetic valve 21, closing a #2 middle electromagnetic valve 38, sequentially connecting the natural ester insulating oil in series, performing fine filtration and adsorption treatment through a fine filtration filter 23 and an adsorption filter 19, and intermittently opening a manual sampling valve 31 for sampling detection;
when detecting that the moisture, the dielectric loss factor, the breakdown voltage and the granularity in the natural ester insulating oil meet the required values, opening a #2 intermediate electromagnetic valve 38, closing a fine filtration inlet electromagnetic valve 22, a fine filtration outlet electromagnetic valve 17, an adsorption outlet electromagnetic valve 18 and an adsorption inlet electromagnetic valve 21, opening an additive feeding electromagnetic valve 1 to suck the additive mother liquor into a main oil tank 2 in vacuum, starting an ultrasonic vibration rod 3 to perform short-time ultrasonic dispersion on the natural ester insulating oil, then closing the ultrasonic vibration rod 3, and when detecting that the moisture, the dielectric loss factor, the breakdown voltage, the granularity and the chromatographic values in the natural ester insulating oil meet the required values, closing a coalescence oil transportation variable frequency pump 32 and a coalescence oil transportation variable frequency pump inlet electromagnetic valve 34; when the liquid level protection device 13 gives an alarm when the liquid level is low, the vacuum oil transportation variable frequency pump 15 is closed in a linkage variable frequency mode; then closing the #2 intermediate electromagnetic valve 38, the bypass electromagnetic valve 20 and the vacuum filtration outlet electromagnetic valve 16, stopping the vacuum pump 37, closing the vacuum electromagnetic valve 10 of the vacuum separator, the main oil tank vacuum electromagnetic valve 8 and the variable frequency motor 5, and naturally cooling to room temperature; and opening the pressure relief electromagnetic valve 4 and the oil outlet electromagnetic valve 33 to output the finished product natural ester insulating oil out of the system through an oil outlet pipeline 43.
Example 2
The vacuum oil filtering device for the natural ester insulating oil in the embodiment 2 is the same as the embodiment 1, except that the using method is different, in the using method, a fine filtering filter 23 and an adsorption filter 19 are connected into a system in a parallel mode, namely, a manual sampling valve 31 is intermittently opened for sampling detection, when the moisture in the natural ester insulating oil is detected to meet a required value, a fine filtering inlet electromagnetic valve 22, a fine filtering outlet electromagnetic valve 17, an adsorption inlet electromagnetic valve 21, an adsorption outlet electromagnetic valve 18 and a #1 intermediate electromagnetic valve 39 are opened, a bypass electromagnetic valve 20 is closed, a part of the natural ester insulating oil is subjected to fine filtering treatment through the fine filtering filter 23, and the other part of the natural ester insulating oil is subjected to adsorption treatment through the adsorption filter 19; when detecting that the moisture, the dielectric loss factor, the breakdown voltage and the granularity in the natural ester insulating oil meet the required values, opening a bypass electromagnetic valve 20, closing a fine filtration inlet electromagnetic valve 22, a fine filtration outlet electromagnetic valve 17, an adsorption inlet electromagnetic valve 21, an adsorption outlet electromagnetic valve 18 and a #1 middle electromagnetic valve 39, opening an additive feeding electromagnetic valve 1 to suck the additive mother liquor into a main oil tank 2 in a vacuum manner, and starting an ultrasonic vibration rod 3 to carry out short-time ultrasonic dispersion on the natural ester insulating oil. The other process steps are the same as in example 1.
Example 3
The vacuum oil filtering device for the natural ester insulating oil in the embodiment 3 is the same as the embodiment 1, except that in the using method, the fine filtering filter 23 and the adsorption filter 19 are connected to the system in a single mode, namely, the manual sampling valve 31 is intermittently opened for sampling detection, when the moisture in the natural ester insulating oil is detected to meet the required value, the fine filtering inlet electromagnetic valve 22, the fine filtering outlet electromagnetic valve 17 and the #1 intermediate electromagnetic valve 39 are opened, the bypass electromagnetic valve 20 is closed, and the natural ester insulating oil is subjected to fine filtering treatment through the fine filtering filter 23; then opening an adsorption inlet electromagnetic valve 21 and an adsorption outlet electromagnetic valve 18, closing a fine filtration inlet electromagnetic valve 22 and a fine filtration outlet electromagnetic valve 17, and performing adsorption treatment on the natural ester insulating oil through an adsorption filter 19; when detecting that the moisture, the dielectric loss factor, the breakdown voltage and the granularity in the natural ester insulating oil meet the required values, opening the bypass electromagnetic valve 20, closing the adsorption inlet electromagnetic valve 21, the adsorption outlet electromagnetic valve 18 and the #1 middle electromagnetic valve 39, opening the additive feeding electromagnetic valve 1 to suck the additive mother liquor into the main oil tank 2 in vacuum, and starting the ultrasonic vibration rod 3 to perform short-time ultrasonic dispersion on the natural ester insulating oil. The other process steps are the same as in example 1.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited, and other modifications or equivalent substitutions made by the technical solutions of the present invention by the persons skilled in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a natural ester insulating oil vacuum oil filter device which characterized in that: the device comprises a main oil tank, a pre-filter, a coalescing filter, a fine filter, an adsorption filter, a vacuum separator and a vacuum system, wherein all the devices are communicated through pipelines;
an additive feeding pipeline and an oil inlet pipeline are respectively arranged on the side edge of the upper part of the main oil tank, an additive feeding electromagnetic valve is arranged on the additive feeding pipeline, the oil inlet pipeline is communicated with an oil inlet branch, and an oil inlet electromagnetic valve is arranged on the oil inlet branch; the bottom of the main oil tank is respectively communicated with an oil outlet pipeline and a coalescence oil conveying pipeline, the oil outlet pipeline is provided with an oil outlet electromagnetic valve, and the coalescence oil conveying pipeline is sequentially provided with a coalescence oil conveying variable frequency pump inlet electromagnetic valve, a coalescence oil conveying variable frequency pump, a manual sampling valve, a coalescence oil conveying variable frequency pump outlet electromagnetic valve, a pre-filter and a coalescence filter; the outlet of the coalescence filter is provided with a coalescence outlet electromagnetic valve and is communicated with an oil inlet pipeline through a coalescence output pipeline;
a coalescence oil conveying pipeline between the manual sampling valve and the coalescence oil conveying variable frequency pump outlet valve is communicated with the top end of the vacuum separator through a vacuum filtering main pipeline; the vacuum filtering main pipeline is sequentially provided with a #2 middle electromagnetic valve and a bypass electromagnetic valve, two ends of the bypass electromagnetic valve are connected with two pipelines, namely a fine filtering pipeline and an adsorption pipeline in parallel, outlets of the fine filtering pipeline and the adsorption pipeline are connected with the #1 middle electromagnetic valve in series and then communicated with the vacuum filtering main pipeline, and inlets of the fine filtering pipeline and the adsorption pipeline are positioned at two ends of the #2 middle electromagnetic valve; a fine filtration filter is arranged on the fine filtration pipeline, a fine filtration inlet electromagnetic valve and a fine filtration outlet electromagnetic valve are respectively arranged at an inlet and an outlet of the fine filtration filter, an adsorption filter is arranged on the adsorption pipeline, and an adsorption inlet electromagnetic valve and an adsorption outlet electromagnetic valve are respectively arranged at an inlet and an outlet of the adsorption filter;
the top end of the vacuum separator is communicated with the top end of the main oil tank through a vacuum pipeline, a main oil tank vacuum electromagnetic valve and a vacuum separator vacuum electromagnetic valve are sequentially arranged on the vacuum pipeline in the direction away from the main oil tank, and the vacuum pipeline between the main oil tank vacuum electromagnetic valve and the vacuum separator vacuum electromagnetic valve is communicated with the vacuum system through a vacuum branch; the bottom of the vacuum separator is communicated with an oil inlet pipeline through a vacuum filtering outlet pipeline, and a vacuum oil delivery variable frequency pump and a vacuum filtering outlet electromagnetic valve are arranged on the vacuum filtering outlet pipeline;
the top of the main oil tank is respectively provided with an ultrasonic vibration rod, a pressure relief electromagnetic valve, a variable frequency motor, a vacuum meter and an electric heating rod, the variable frequency motor is positioned in the center of the top of the main oil tank, and the side wall of the main oil tank is provided with a liquid level meter; one end of the variable frequency motor, which penetrates through the main oil tank, is provided with a stirring paddle, and the stirring paddle consists of an inclined blade type blade and a frame type blade;
the lower end of the coalescence filter is communicated with a water collector, and a drain valve is installed at the bottom of the water collector.
2. The vacuum oil filtering device for the natural ester insulating oil according to claim 1, characterized in that: ultrasonic vibration stick and electric heating rod symmetry interval install main oil tank top, just main oil tank inner wall is fixed.
3. The vacuum oil filtering device for the natural ester insulating oil according to claim 1, characterized in that: the length of the ultrasonic vibrating rod is the same as that of the electric heating rod, and the ultrasonic vibrating rod is located 2-5cm above the frame type paddle.
4. The vacuum oil filtering device for the natural ester insulating oil according to claim 1, characterized in that: the vacuum separator comprises a rotary stainless steel ball type disperser, a circular peep lens and a liquid level protection device, the rotary stainless steel ball type disperser is installed at the tail end of a vacuum filtering main pipeline extending into the top of the vacuum separator, the circular peep lens and the liquid level protection device are arranged on the side part of the vacuum separator in a sealing mode, and the liquid level protection device is communicated with the inside of the vacuum separator.
5. The vacuum oil filtering device for the natural ester insulating oil according to claim 1, characterized in that: the filter element aperture of the fine filter and the filter element aperture of the adsorption filter are 0.5-0.75 mu m.
6. The vacuum oil filter device of claim 1, wherein: and the fine filter and the adsorption filter are connected into a system for use.
7. The vacuum oil filter device of claim 1, wherein: the fine filter and the adsorption filter are connected in series or in parallel to a system for use.
8. The vacuum oil filtering device for the natural ester insulating oil as claimed in claim 4, characterized in that: the liquid level protection device is connected with the frequency converters of the coalescence oil transportation variable frequency pump and the vacuum oil transportation variable frequency pump, and controls the flow rate and the start and stop of the coalescence oil transportation variable frequency pump and the vacuum oil transportation variable frequency pump through interlocking frequency conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654048.8A CN107362609B (en) | 2017-08-03 | 2017-08-03 | Natural ester insulating oil vacuum oil filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654048.8A CN107362609B (en) | 2017-08-03 | 2017-08-03 | Natural ester insulating oil vacuum oil filtering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107362609A CN107362609A (en) | 2017-11-21 |
| CN107362609B true CN107362609B (en) | 2022-08-09 |
Family
ID=60309827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710654048.8A Active CN107362609B (en) | 2017-08-03 | 2017-08-03 | Natural ester insulating oil vacuum oil filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107362609B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108906317A (en) * | 2018-06-28 | 2018-11-30 | 佛山市高明区杨和金属材料专业镇技术创新中心 | A kind of waste oil deironing apparatus |
| CN111111315A (en) * | 2019-11-28 | 2020-05-08 | 保定天威集团特变电气有限公司 | Method for vacuum filtering of natural ester insulating oil for transformer |
| CN113680127A (en) * | 2021-07-12 | 2021-11-23 | 泰州市宏泰电力设备有限公司 | Vacuum oil filter with detect function |
| CN115144490B (en) * | 2022-06-10 | 2023-09-05 | 广东电网有限责任公司 | Identification method of natural ester insulating oil genus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101009758B1 (en) * | 2009-11-23 | 2011-01-19 | (주)그린필드 | Poly chlorinated biphenyl recycling method using mobile unit type purification process system |
| US20130045903A1 (en) * | 2011-08-15 | 2013-02-21 | Robert O. Crowder | Process and Apparatus to Remove Oxidation Products from Used Oil |
| CN203208789U (en) * | 2013-04-17 | 2013-09-25 | 重庆潜能实业(集团)有限公司 | Double-stage vacuum oil filter for super-high transformer oil |
| CN103454382A (en) * | 2013-09-12 | 2013-12-18 | 重庆工商大学 | Technical scheme of test bench device for testing dewatering performance of coalescence and separation filter cores on lubricating oil |
| CN104232302B (en) * | 2014-10-09 | 2016-08-31 | 重庆大学 | Vegetable insulating oil processes a complete set of technique |
| CN104987949B (en) * | 2015-06-24 | 2018-09-21 | 广州供电局有限公司 | The improvement processing method of vegetable insulating oil |
| CN205699597U (en) * | 2016-03-04 | 2016-11-23 | 重庆秉誉机电设备有限公司 | Coarse separation system and vacuum dewatering system phase switching device |
| CN207047195U (en) * | 2017-08-03 | 2018-02-27 | 国网河南省电力公司电力科学研究院 | A kind of novel evacuated oil filtering unit |
-
2017
- 2017-08-03 CN CN201710654048.8A patent/CN107362609B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107362609A (en) | 2017-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107362609B (en) | Natural ester insulating oil vacuum oil filtering device | |
| CN103849428B (en) | A kind of magnetoelectricity field emulsion treater | |
| CN108203592B (en) | Crude oil desalting and dewatering equipment and application thereof | |
| CN110903850A (en) | Crude oil electric desalting equipment and method | |
| CN104910944B (en) | Coal tar desalinating process | |
| CN111040805B (en) | Crude oil pre-dehydration, deep dehydration and sewage oil removal integrated device and method | |
| CN107473418B (en) | Vacuum oil filtering process for natural ester insulating oil | |
| CN203807424U (en) | Device using used lubricating oil to regenerate base oil | |
| CN210140556U (en) | High-efficient dewatering device of ageing crude oil vacuum flash distillation | |
| CN211676653U (en) | High-efficient adsorption regenerating unit of degradation transformer oil | |
| CN104987950A (en) | Treatment method for reducing dielectric loss of vegetable insulating oil | |
| CN207047195U (en) | A kind of novel evacuated oil filtering unit | |
| CN112386952A (en) | Emulsified oil liquid purification device based on super-hydrophobic/super-lipophilic screen net film | |
| CN104801103A (en) | Coalescence vacuum oil purifier | |
| CN106310717A (en) | Oil filtering process capable of reducing water content of vegetable insulating oil | |
| CN107400536A (en) | Coking, absorbing and stabilizing technique and system | |
| CN103285734B (en) | A treatment process and a system for waste organic solvents based on nano filter membranes | |
| CN204661634U (en) | A kind of Mobile lubrication oil three combined dehydration devices | |
| CN203648245U (en) | Novel agglomerate separation oil filter | |
| CN204337838U (en) | A kind of coalescent oil filter device with ultrasonic dehydration | |
| CN202724863U (en) | Two-stage vacuum oil purifier | |
| CN1121474C (en) | High temp. centrifugal separator externally extracting oil separating, purifying and catalytic cracking | |
| CN202144452U (en) | Extraction device used for wet-process phosphoric acid refining | |
| CN112592735A (en) | System and method for removing solid by catalytic slurry offline filler electro-adsorption | |
| CN110935230A (en) | Novel secondary filter device and method for filtering residue and dehydrating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |