CN116435061A - Water removal device and application thereof - Google Patents
Water removal device and application thereof Download PDFInfo
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- CN116435061A CN116435061A CN202310602707.9A CN202310602707A CN116435061A CN 116435061 A CN116435061 A CN 116435061A CN 202310602707 A CN202310602707 A CN 202310602707A CN 116435061 A CN116435061 A CN 116435061A
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- water
- oil
- water removal
- sensor
- filter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 310
- 229910001868 water Inorganic materials 0.000 title claims abstract description 310
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims description 18
- 238000001035 drying Methods 0.000 abstract description 23
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 abstract description 14
- 239000002808 molecular sieve Substances 0.000 abstract description 11
- 238000001179 sorption measurement Methods 0.000 abstract description 8
- 230000008929 regeneration Effects 0.000 abstract description 4
- 238000011069 regeneration method Methods 0.000 abstract description 4
- 239000003463 adsorbent Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 34
- 238000001514 detection method Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 13
- 239000000047 product Substances 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000004115 Sodium Silicate Substances 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 5
- 229910052911 sodium silicate Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000013067 intermediate product Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000429 sodium aluminium silicate Substances 0.000 description 2
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 2
- 101100204059 Caenorhabditis elegans trap-2 gene Proteins 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000007488 abnormal function Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal sodium aluminosilicate Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/08—Thickening liquid suspensions by filtration
- B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/12—Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The invention relates to the technical field of transformers, and provides a water removing device for a transformer oil paper insulation system, wherein a water removing material in the water removing device is a 4A molecular sieve adsorbent which has excellent performance, high adsorption capacity, adsorption selectivity and stable regeneration, and has strong affinity to water; the water removing device comprises a control unit and an oil inlet valve, an oil filter, a water removing filter group, a flowmeter, an oil pump and an oil outlet valve which are sequentially communicated, wherein the flowmeter and the oil pump are respectively and electrically connected with the control unit; the water removing material is arranged in the water removing filter group. The water removing device provided by the invention can maintain the drying level of the insulating material of the transformer in real time, and provides a safe and reliable transformer on-line drying water removing device for users.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a water removing device and application thereof, in particular to a water removing material and a water removing device for a transformer oil paper insulation system.
Background
Transformers are one of the most important devices of a power transmission system, and are the cores of energy conversion and transmission in a power grid. The oil paper insulation system is a main insulation system of the transformer and is a two-phase composite insulation system in which insulation oil and insulation paper are mixed. In the running process, aging occurs due to the long-term effect of stress such as heat, moisture, oxygen, an electric field, mechanical force and the like, so that the insulation performance and the mechanical performance of the insulating paper are reduced, the change is usually irreversible, and the moisture is an important factor for causing the insulation aging of the oiled paper and can seriously damage the mechanical strength and the electrical strength of the insulating paper. The mechanical life of the insulating paper decreases rapidly with increasing moisture content and the heat aging rate increases exponentially. In addition, moisture is also a catalyst for chemical degradation reaction of high polymer materials such as oil, paper cellulose and the like, and has irreversible acceleration effect on degradation and aging of the materials.
Removal of moisture is the most effective method of repairing transformer insulation systems and extending the useful life of transformers. The existing method for treating the exceeding of the water and gas content in the transformer oil in China mainly comprises the steps of taking the transformer out of operation, and dehydrating and degassing the transformer by using a vacuum oil filter after equipment fails. The 500kV transformer adopts the power failure vacuum oil filtration to filter the transformer oil for about 8 hours; the power can be transmitted after standing for 72 hours before operation, and the accumulated power failure time is longer than 80 hours. If the degassing effect is not good, two to three times of filtering are needed, the power failure time is longer, the maintenance workload is large, the power failure is difficult to overhaul, and the overhaul time is long.
Disclosure of Invention
Therefore, the invention aims to provide a water removing device and application thereof, and the water removing device provided by the invention has better water filtering performance.
The invention provides a water removal device, which comprises:
a control unit;
an oil inlet valve, an oil filter, a water removal filter set, a flowmeter, an oil pump and an oil outlet valve which are sequentially communicated;
the flowmeter and the oil pump are respectively connected with the control unit.
In the embodiment of the invention, the control unit is used for controlling the flowmeter and the oil pump, the flow rate of the flowmeter and the opening or closing of the flowmeter and the oil pump can be controlled by the control unit, and the flowmeter and the oil pump are respectively and electrically connected with the control unit.
In the embodiment of the present invention, there is no particular limitation on the oil inlet valve for allowing the transformer oil containing moisture to enter the oil filter, which is a valve well known to those skilled in the art to control the entry of oil.
In the embodiment of the invention, the oil filter is not particularly limited, and an oil filter which is well known in the art and can be used for removing impurities in oil is adopted, wherein the oil filter is used for removing the impurities in the transformer oil containing water, so that the impurities are prevented from entering a water removal filter group to influence the water filtering effect; the oil filter may employ oil filter products well known in the art.
In the embodiment of the invention, the flow meter is not particularly limited, and a flow meter which is well known in the art and can be used for measuring the flow rate of oil products is adopted, the flow meter can be used for detecting the flow rate of the filtered transformer oil in a water removal device and controlling the flow rate of the transformer oil to prevent the too low or too high flow rate from adversely affecting water removal, and the flow rate of the flow meter can be controlled to be 2.5-3 liters/min.
In the embodiment of the invention, the oil pump is not particularly limited, and a pump body which is well known in the art and can be used for transporting oil products is adopted, and the oil pump is used for conveying the transformer oil containing moisture into the oil inlet valve for filtering and dewatering sequentially.
In the embodiment of the invention, there is no particular limitation on the oil outlet valve, and a valve which is well known in the art and can be used for controlling the outflow of oil is adopted, and the oil outlet valve is used for discharging the filtered and dehydrated transformer oil back into the transformer oil tank.
In the embodiment of the invention, the exhaust valve is arranged between the oil filter and the oil inlet valve and is used for removing gas in the water removal device before water removal, so that oil aging caused by air mixed into transformer oil in the water removal process is avoided, the exhaust valve is opened before the water removal of the transformer oil is carried out, the oil outlet valve is closed, the oil inlet valve is slightly opened, the oil pump is opened, and the gas in the water removal device is discharged through the exhaust valve.
In the embodiment of the invention, a first micro water sensor is arranged between the oil filter and the exhaust valve, the first micro water sensor is connected with the control unit and is electrically connected with the control unit, the first micro water sensor is controlled to be opened or closed by the control unit, the first micro water sensor can be used for detecting the moisture content in the transformer oil when the water in the water removing device is not removed, and if the moisture content in the transformer oil is very low or the transformer oil can not be removed, the idling of the device is avoided when the water is not needed, the service life of the device is prolonged and the energy is saved; the first micro water sensor is not particularly limited, and any sensor known in the art for detecting moisture content may be used, and any micro water sensor product known in the art may be used.
In the embodiment of the invention, a second micro water sensor is arranged between the oil outlet valve and the oil pump, the second micro water sensor is connected with the control unit and is electrically connected with the control unit, the control unit can control the second micro water sensor to be opened or closed, the second micro water sensor is used for detecting the moisture content in the dehydrated transformer oil, and whether the water removal filter group works normally can be judged by comparing the detection values of the first micro water sensor and the second micro water sensor, if the difference between the detection values of the first micro water sensor and the second micro water sensor is larger, the water removal filter group can be judged to work normally; if the detection values of the first micro water sensor and the second micro water sensor are smaller in phase difference, the abnormal function of the water removal filter group can be judged, and a water removal material or a water removal filter element needs to be replaced; the difference of detection values of the first micro water sensor and the second micro water sensor is not less than 1ppm, so that the water removal filter group can be judged to function normally; the second micro water sensor is not particularly limited, and a sensor which can be used for detecting the moisture content in the oil product with a numerical value in the field can be adopted, and a micro water sensor product which is well known in the field can be adopted.
In the embodiment of the invention, a first pressure sensor is arranged between the oil filter and the first micro water sensor, the first pressure sensor is connected with the control unit and is electrically connected with the control unit, and the control unit is used for controlling the opening or closing of the first pressure sensor; the first pressure sensor is not particularly limited, and any pressure sensor known in the art for detecting pressure may be used, and any pressure sensor known in the art may be used.
In the embodiment of the invention, a second pressure sensor is arranged between the oil pump and the second micro water sensor, the second pressure sensor is connected with the control unit and is electrically connected with the control unit, and the control unit can control the second pressure sensor to be opened or closed; the second pressure sensor is used for detecting the pressure value of the dewatered transformer oil in the dewatering device, and the second pressure sensor is matched with the first pressure sensor to monitor the oil way blocking degree of the dewatering device; taking 30% of the pressure difference value of the first pressure sensor and the second pressure sensor as an operation monitoring fixed value when the water removing device normally operates for the first time, and when the pressure difference value of the first pressure sensor and the second pressure sensor is lower than the monitoring fixed value, indicating that an oil way of the water removing device is blocked, and cleaning the oil way in time; the second pressure sensor is not particularly limited, and a sensor known in the art for detecting pressure may be used, and a pressure sensor product known in the art may be used.
In the embodiment of the invention, a first temperature sensor is arranged between the oil filter and the exhaust valve, the first temperature sensor is connected with the control unit, or the first temperature sensor can be arranged between the oil filter and the first pressure sensor and can be electrically connected with a control power supply, and the control unit is used for controlling the opening or closing of the first temperature sensor; the first temperature sensor is used for detecting the top oil temperature of the transformer oil tank, and if the temperature of the transformer oil containing moisture is too high, the transformer oil tank can be cooled, so that the transformer oil containing moisture entering the water removal device is prevented from being denatured or damaged at high temperature due to the fact that the temperature of the transformer oil containing moisture is too high; when the detection temperature of the first temperature sensor is higher than 80 ℃, alarming is needed and the transformer oil tank is cooled; the first temperature sensor is not particularly limited, and any sensor known in the art to be usable for temperature detection may be used, and any temperature sensor product known in the art may be used.
In the embodiment of the invention, a second temperature sensor is arranged between the oil pump and the oil outlet valve, the second temperature sensor is connected with the control unit, a second temperature sensor can be arranged between the oil pump and the second pressure sensor, the second temperature sensor can be electrically connected with the control unit, and the second temperature sensor is opened or closed through the control unit; the second temperature sensor is used for detecting the bottom oil temperature of the transformer, and the detection temperature of the second temperature sensor should not exceed 80 ℃; the values detected by the first temperature sensor and the second temperature sensor can be compared, the detection value of the first temperature sensor is higher than the detection value of the second temperature sensor under normal conditions, if the detection value of the first temperature sensor is lower than the detection value of the second temperature sensor, the abnormality of the water removal device can be judged, whether the water removal device has a problem or not needs to be checked, and the water filtration is performed normally; the second temperature sensor is not particularly limited, and a sensor known in the art to be used for detecting temperature may be used, and a temperature sensor product known in the art may be used.
In the embodiment of the invention, a throttle valve can be arranged between the oil outlet valve and the second temperature sensor, the throttle valve is used for controlling the oil outlet speed of the dehydrated transformer oil, and the oil outlet speed can be controlled to be 2.5-3 liters/min; the throttle valve is not particularly limited, and a valve capable of controlling the flow rate of the oil body, which is well known in the art, may be used.
In the embodiments of the present invention, there is no particular limitation on the water removal filter set, which may employ a water removal filter product well known in the art, using a device well known in the art for filtering water.
In an embodiment of the present invention, the water removal filter group may include a first water removal filter, a second water removal filter, and a third water removal filter in series in this order, an inlet of the first water removal filter being in communication with the oil filter (outlet), an outlet of the third water removal filter being in communication with the flow meter (inlet).
In the embodiment of the invention, the water removing filter group is internally provided with water removing materials, such as the first water removing filter, the second water removing filter and the third water removing filter are internally provided with water removing materials.
In the embodiment of the invention, the main component of the water removal material can be alkali metal sodium aluminosilicate, which has uniform pore diameter and extremely large specific surface area, and substances with molecular diameter smaller than the diameter of the molecular sieve crystal holes can be adsorbed by the molecular sieve, otherwise, the substances are repelled; the water removing material is a 4A molecular sieve structure, the aperture is selected from 0.42-0.47 nm, and the molecular formula can be selected from Na 2 O·Al 2 O 3 ·2.0SiO 2 ·4.5H 2 O; which is a kind ofThe molar ratio of the silica to the alumina may be selected from 2:1; the bulk density can be more than or equal to 660gL -1 The method comprises the steps of carrying out a first treatment on the surface of the The crush strength may be selected from 20 to 80N, such as 40N, 60N; the wear rate may be selected from 0.2 to 0.4, such as 0.3; the average static adsorption capacity can be more than or equal to 22.0 percent.
In an embodiment of the present invention, a method for preparing a water removal material may include:
mixing sodium silicate, sodium aluminate, water and an auxiliary agent to obtain slurry;
performing polycrystallization treatment on the slurry, and drying to obtain an intermediate product;
mixing the intermediate product with a template agent, drying and dehydrating to obtain a porous body;
and sintering the porous body and the reverse direction to obtain the molecular sieve water removing material.
In an embodiment of the present invention, the water may be selected from pure water; the mass ratio of sodium silicate, sodium aluminate and water can be selected from (2-4): (1-3): (4-6), such as 3:2:5, a step of; sodium silicate, sodium aluminate and water can be mixed and then put into a reaction kettle provided with a stirrer, and then an auxiliary agent is added, wherein the auxiliary agent can be selected from NaOH (sodium hydroxide); the mass ratio of the sodium silicate to the auxiliary agent can be selected from (7-9): (1-3), such as 8:2; the mixing may be carried out under stirring, and the stirring time may be selected from 20 to 30 minutes, such as 25 minutes.
In embodiments of the invention, the slurry may be subjected to a polycrystallisation process in a heated zone, the temperature of which may be selected from 75 to 85 ℃, such as 80 ℃; the time may be selected from 1 to 2 hours, such as 1.5 hours; the temperature of drying after the polycrystallization treatment may be selected from 130 to 150 ℃, such as 140 ℃; the drying time may be selected from 3 to 4 hours, such as 3.5 hours.
In an embodiment of the present invention, the templating agent may be selected from cetyltrimethylammonium bromide; the mass ratio of the intermediate product to the template agent can be selected from (95-99): (1-5), such as 97:3, a step of; drying and dehydrating are carried out in a drying oven, and the drying and dehydrating are carried out by repeatedly rotating the drying oven; the temperature of the drying and dehydration may be selected from 130 to 150 ℃, such as 140 ℃; the drying time may be selected from 0 to 1 hour, such as 0.5 hours.
In embodiments of the present invention, sintering may be performed in a sintering kiln, and the sintering temperature may be selected from 550 to 600 ℃, such as 560 ℃, 570 ℃, 580 ℃, 590 ℃; the sintering time may be selected from 2 to 4 hours, such as 3 hours, to obtain a molecular sieve having a regular size, pore size and porosity.
In the embodiment of the invention, the molecular size of the 4A molecular sieve water removal material is small, so that special possibility can be provided for operation and the material is suitable for multifunctional space, and the water filtration performance of the material of the grade is high, so that water removal and filtration can be better.
The invention provides a water removal material for a transformer oil paper insulation system, which has good water filtration performance. The invention also provides a water removing device for the transformer oil paper insulation system, which can maintain the drying level of the transformer insulation material in real time, and provides a safe and reliable transformer on-line drying water removing device for users without power failure.
In embodiments of the invention, the interface of the water removal filter set or water removal filter with the oil filter and/or the flow meter may be a quick-install flange interface, which may facilitate removal and replacement of a newly installed water removal material or a water removal filter set or water removal filter that regenerates the water removal material.
In the embodiment of the invention, the water removal filter group or the water removal filter can be further provided with a heating function, so that the online regeneration of the water removal material can be realized, when the detection difference value between the first micro water sensor and the second micro water sensor is detected to be very small (for example, less than 1 ppm), the water removal effect is greatly reduced, the water saturation of the water removal material can be greatly reduced, the oil inlet valve and the oil outlet valve can be closed, the heating device of the water removal filter group or the water removal filter can be started, the exhaust valve is opened, the regeneration treatment of the water removal material is carried out, the exhaust valve is closed after the regeneration of the water removal material, and the oil inlet valve and the oil outlet valve are opened to carry out the circulating water removal of the transformer oil.
In an embodiment of the present invention, a schematic structural diagram of a water removal device is shown in fig. 1, including: the oil inlet valve 1, the oil filter 2, the first water removal filter 3, the second water removal filter 4, the third water removal filter 5, the flowmeter 6, the oil pump 7, the oil outlet valve 8, the control unit 9, the exhaust valve 10, the first micro water sensor 11, the second micro water sensor 12, the first pressure sensor 13, the second pressure sensor 14, the first temperature sensor 15, the second temperature sensor 16, the throttle valve 17 and the oil tank 18.
The invention provides a water removal method, which comprises the following steps: the water removal device adopting the technical scheme is used for removing water from the transformer oil.
In the embodiment of the invention, when the water removing device is used, the oil inlet valve and the oil outlet valve are opened, the flowmeter and the oil pump are opened through the control unit, the oil pump containing water in the transformer oil tank is discharged from the oil inlet valve and enters through the oil pump, the oil containing water passes through the oil filter, some impurities contained in the oil are removed, the impurities are prevented from entering the water removing filter group to influence the water filtering effect of the water removing filter group, and meanwhile, the service life of the water removing filter group is prolonged; the oil containing water passing through the oil filter enters the water removal filter group again, the water in the oil can be removed through the water removal material in the water removal filter group, and then the oil returns to the oil tank of the transformer through the oil outlet valve; the flow rate can be detected through the flow meter in the whole water filtering process, the whole water filtering speed is controlled, the situation that the speed is too slow and the efficiency is low is avoided, the water filtering effect cannot be achieved, the situation that the flow rate is too fast, the water in the oil cannot be removed as much as possible is avoided, in addition, whether the device runs normally or not can be observed through the flow meter, and the water filtering is guaranteed to be carried out normally.
The invention provides a transformer oil paper insulation system, which comprises: the water removing device is characterized by comprising a water inlet pipe.
The water removing device for the transformer oil paper insulation system is safe and reliable, can keep the drying level of the transformer insulation material in real time, prolongs the service life of the transformer, does not need power failure during use, greatly reduces maintenance difficulty, saves maintenance time, changes the former constant inspection into the current real-time on-line monitoring and water removal, avoids secondary damage to equipment caused by maintenance, powerfully ensures the reliability of the equipment, and can timely check faults caused by overlarge water content of the transformer.
Drawings
Fig. 1 is a schematic structural diagram of a water removal device according to an embodiment of the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Mixing sodium silicate, sodium aluminate and pure water according to the mass ratio of 3:2:5, putting the mixed raw materials into a reaction kettle provided with a stirrer, adding sodium hydroxide, stirring uniformly, starting the pulping process, and repeatedly stirring the obtained mixture for 20-30 minutes to obtain the slurry.
And (3) transferring the stirred slurry into a heating area, performing polycrystallization treatment, controlling the temperature range to be about 80 ℃ generally, and keeping the temperature for a certain time to be 1.5 hours generally, drying after crystals are generated, wherein the drying temperature is 140 ℃ to obtain the polycrystal.
Adding the dried polycrystal into cetyl trimethyl ammonium bromide template agent, wherein the mass ratio of the polycrystal to the template agent is 97: and 3, drying and dehydrating in a rotary oven at a constant temperature of 140 ℃ for 0.5 hour, and repeatedly rotating the oven to obtain the porous body.
And (3) placing the porous body treated by the template removing agent into a sintering kiln, and sintering at 570 ℃ for 3 hours to form the molecular sieve with regular size, pore diameter and porosity.
The nano water removal material prepared in example 1 is a 4A molecular sieve structure, the effective aperture is 0.4nm (the detection method is according to HG/T2524-2010 4A molecular sieve), the chemical component is sodium aluminosilicate, and the molecular formula is Na 2 O·Al 2 O 3 ·2.0SiO 2 ·4.5H 2 Physical parameters of O (detection method is according to HG/T2524-20104A molecular sieve) (detection method is according toHG/T2524-2010A molecular sieve) is shown in the following table, has large adsorption capacity and high adsorption performance, and the energy distribution of adsorbed water molecules extends to a high energy direction, so that the molecular sieve is suitable for deep dehydration of transformer oil, and the adsorption capacity is 3 times of the adsorption capacity of substances such as sodium carbonate and 5 times of the adsorption capacity of sodium tripolyphosphate and sodium sulfate on the premise of ensuring the dehydration effect and the dehydration safety and the desiccation multiplexing of a dehydration material.
The water removal effect of the water removal material prepared in the embodiment 1 is detected, a water removal drying tank is arranged at the oil outlet of the transformer, the water removal material is added into the water removal drying tank, micro-water sensors are arranged at the oil inlet and the oil outlet of the water removal drying tank, the water content of transformer oil at the inlet and the outlet of the water removal drying tank is detected, and the detection result is as follows:
| Time | inlet data (ppm) | Outlet data (ppm) |
| 2022.11.12 | 9 | 6.5 |
| 2022.11.22 | 9 | 6 |
| 2022.12.02 | 7.2 | 6 |
| 2022.12.12 | 6.5 | 4 |
| 2022.12.22 | 3.8 | 2.9 |
Example 2
The embodiment provides a dewatering device of a transformer oil paper insulation system, which is shown in fig. 1, and comprises a control unit 9, and an oil inlet valve 1, an oil filter 2, a dewatering filter group, a flowmeter 6, an oil pump 7 and an oil outlet valve 8 which are sequentially communicated, wherein the flowmeter 6 and the oil pump 7 are respectively and electrically connected with the control unit 9; the water removal material prepared in example 1 was placed in a water removal filter set.
When the oil filter is used for removing water, the oil inlet valve 1 and the oil outlet valve 8 are opened, the flowmeter 6 and the oil pump 7 are opened through the control unit 9, the oil pump 7 containing water in the transformer oil tank 18 is discharged from the oil inlet valve 1 through the oil pump 7, the oil containing water passes through the oil filter 2 in the water removal filter group, some impurities contained in the oil are removed, the impurities are prevented from entering the water removal filter group to influence the water filtering effect of the water removal filter group, and meanwhile, the service life of the water removal filter group is prolonged; the oil containing water passing through the oil filter 2 enters a water removal filter set again, the water in the oil can be removed through the water removal material in the water removal filter set, and then the oil returns to the oil tank 18 through the oil outlet valve 8; the flow rate can be detected through the flow meter 6 in the whole water filtering process, the whole water filtering speed is controlled to be 2.5-3 liters/min, the situation that the speed is too slow and the efficiency is low and the water filtering effect cannot be achieved is avoided, the situation that the water in the oil cannot be removed as much as possible due to too fast flow rate is also avoided, and in addition, whether the device operates normally or not can be observed through the flow meter 6, so that the water filtering is ensured to be carried out normally. When the water removal filter set or the oil filter 2 needs to be replaced, the oil pump 7 is closed, then the oil inlet valve 1 and the oil outlet valve 8 are closed, and the pipe holes at the two ends of the water removal filter set or the oil filter 2 are closed, so that replacement is performed.
Example 3
The transformer oil paper insulation system water trap that this embodiment provided is as shown in fig. 1, on the basis of embodiment 2, set up the water trap group to including first water trap 3, second water trap 4 and third water trap 5 that establish ties in proper order, first water trap 3 advances oil end and oil trap 2 export intercommunication, and the oil outlet end of third water trap 5 communicates with the import of flowmeter 6, all is equipped with the water trap material of embodiment 1 preparation in first water trap 3, second water trap 4 and the third water trap 5.
In embodiment 3, the water removal filter group comprises a first water removal filter 3, a second water removal filter 4 and a third water removal filter 5 which are sequentially connected in series, and the oil containing water is subjected to three-stage water filtration, so that the water in the oil can be prevented from being removed as much as possible by only filtering for 1-2 times, and the water filtration after more than three stages is prevented from having no practical effect, and the waste of equipment is avoided; the first water removal filter 3, the second water removal filter 4 and the third water removal filter 5 are provided with water removal materials, so that the water filtration can be ensured to be complete.
Example 4
The water removing device of the transformer oil paper insulation system provided in this embodiment is shown in fig. 1, and on the basis of embodiment 3, an exhaust valve 10 is provided between the oil filter 2 and the oil inlet valve 1.
Before the water removal device of the oilpaper insulation system is used for removing water, the exhaust valve 10 is opened, the oil outlet valve 8 is closed, the oil inlet valve 1 is slightly opened, the oil pump 7 is opened, gas in the device is discharged, the aging of the oilpaper insulation system caused by mixing air into oil in the water filtering process is avoided, after the gas in the device is completely discharged, the exhaust valve 10 is closed, the oil outlet valve 8 is opened, the oil inlet valve 1 is completely opened, and the device is opened.
Example 5
As shown in fig. 1, in the water removing device of the transformer oil paper insulation system provided in this embodiment, on the basis of embodiment 4, a first micro water sensor 11 is disposed between the exhaust valve 10 and the oil filter 2, and the first micro water sensor 11 is electrically connected with the control unit 9.
The water removal device is started, the first micro water sensor 11 is started through the control unit 9, the water content of oil in the transformer oil tank 18 can be detected in real time, the device can be closed when the water content is very low or not, device idling caused by starting when water filtering is not needed any more is avoided, and energy is saved when the service life of the device is prolonged.
Example 6
The water removing device of the transformer oil paper insulation system provided in this embodiment is shown in fig. 1, and on the basis of embodiment 5, a second micro water sensor 12 is disposed between the oil outlet valve 8 and the oil pump 7, and the second micro water sensor 12 is electrically connected with the control unit 9.
The water removal device is started, the second micro water sensor 12 is started through the control unit 9, the water content in the filtered oil can be detected, whether the water removal material in the water removal filter group needs to be replaced or not is presumed by comparing the water content measured by the first micro water sensor 11 and the second micro water sensor 12, if the water content measured by the first micro water sensor 11 and the second micro water sensor 12 is large, the water removal filter group is proved to have normal water filtration function and a filter element does not need to be replaced, and if the water content measured by the first micro water sensor 11 and the second micro water sensor 12 is smaller than 1ppm, the water removal filter group is proved to have abnormal water filtration function and the filter element needs to be replaced.
Example 7
As shown in fig. 1, in the water removing device of the transformer oil paper insulation system provided in this embodiment, on the basis of embodiment 6, a first pressure sensor 13 is disposed between the first micro water sensor 11 and the oil filter 2, and the first pressure sensor 13 is electrically connected with the control unit 9.
The first pressure sensor 13 is turned on by the control unit 9 while the water removal device is turned on, and the pressure value of the oil containing moisture entering the device can be detected at any time.
Example 8
The water removing device of the transformer oil paper insulation system provided in this embodiment is shown in fig. 1, and on the basis of embodiment 7, a second pressure sensor 14 is disposed between the second micro water sensor 12 and the oil pump 7, and the second pressure sensor 14 is electrically connected with the control unit 9.
The second pressure sensor 14 is opened through the control unit 9 when the water removing device is started, the pressure value of the oil after removing the water can be detected at any time, the first pressure sensor and the second pressure sensor are matched to be used for monitoring the blocking degree of an oil way of the water removing device, 30% of the pressure difference value of the first pressure sensor and the second pressure sensor is used as an operation monitoring fixed value when the transformer water removing device is operated normally for the first time, and when the pressure difference value of the first pressure sensor and the second pressure sensor is lower than the monitoring fixed value, the blocking phenomenon of the oil way is indicated, and the oil way needs to be cleaned timely.
Example 9
As shown in fig. 1, in the water removing device of the transformer oil paper insulation system provided in this embodiment, on the basis of embodiment 8, a first temperature sensor 15 is disposed between the exhaust valve 10 (first pressure sensor 13) and the oil filter 2, and the first temperature sensor 15 is electrically connected to the control unit 9.
The first temperature sensor 15 is opened through the control unit 9 when the water removing device is opened, so that the temperature of oil containing water in the water removing device can be detected, if the temperature is over 80 ℃, certain cooling treatment is needed to be carried out on the oil tank of the transformer, and the phenomenon that the internal structure is denatured at high temperature or damaged due to the fact that the temperature of the oil in the water removing device is over high is avoided.
Example 10
As shown in fig. 1, in the water removing device of the transformer oil paper insulation system provided in this embodiment, on the basis of embodiment 9, a second temperature sensor 16 is disposed between the oil pump 7 and the oil outlet valve 8 (second pressure sensor 14), and the second temperature sensor 16 is electrically connected to the control unit 9.
The second temperature sensor 16 is opened through the control unit 9 when the water removing device is opened, when the equipment can normally run, the first temperature sensor is used for detecting the top oil temperature of the transformer oil tank, the second temperature sensor is used for detecting the bottom oil temperature of the transformer oil tank, the temperature is not higher than 80 ℃, the water removing device is normal when the detected oil temperature of the first temperature sensor is higher than the detected oil temperature of the second temperature sensor, otherwise, the water removing device can be judged to be abnormal, whether the water removing device has a problem or not needs to be checked, and the water filtering is normally carried out.
Example 11
The water removing device of the transformer oil paper insulation system provided by the embodiment is shown in fig. 1, and on the basis of embodiment 10, a throttle valve 17 is arranged between the oil outlet valve 8 and the second temperature sensor 16, and the oil outlet speed is controlled to be 2.5-3 liters/min by the auxiliary control of the throttle valve 17.
When the water removing device for the transformer oil paper insulation system provided by the embodiment of the invention is used, the oil inlet valve 1 and the oil outlet valve 8 are opened, the flowmeter 6 and the oil pump 7 are opened through the control unit 9, the oil pump 7 containing water in the transformer oil tank 18 is discharged from the oil inlet valve 1 through the oil pump 7, the oil containing water passes through the oil filter 2 in the water removing filter group, some impurities contained in the oil are removed, the impurities are prevented from entering the water removing filter group to influence the water filtering effect of the water removing filter group, and meanwhile, the service life of the water removing filter group is prolonged; the oil containing water passing through the oil filter 2 enters a water removal filter set again, the water in the oil can be removed through the water removal material in the water removal filter set, and then the oil returns to the oil tank 18 through the oil outlet valve 8; the flow rate can be detected through the flow meter 6 in the whole water filtering process, the whole water filtering speed is controlled, the situation that the speed is too slow and the efficiency is low is avoided, the water filtering effect cannot be achieved, the situation that the flow rate is too fast and the water in the oil cannot be removed as much as possible is avoided, in addition, whether the device runs normally or not can be observed through the flow meter 6, and the water filtering is guaranteed to be carried out normally. The water removing device of the transformer oil paper insulation system provided by the invention is safe and reliable, can keep the drying level of the transformer insulation material in real time, prolongs the service life of the transformer, does not need power failure during use, greatly reduces the maintenance difficulty, saves the maintenance time, changes the fixed inspection into real-time on-line monitoring and water removal, avoids the secondary damage of equipment caused by the maintenance, powerfully ensures the reliability of the equipment, and can timely check the faults caused by the overlarge water content of the transformer.
While the invention has been described and illustrated with reference to specific embodiments thereof, the description and illustration is not intended to limit the invention. It will be apparent to those skilled in the art that various changes may be made in this particular situation, material, composition of matter, substance, method or process without departing from the true spirit and scope of the invention as defined by the following claims, so as to adapt the objective, spirit and scope of the present application. All such modifications are intended to be within the scope of this appended claims. Although the methods disclosed herein have been described with reference to particular operations being performed in a particular order, it should be understood that these operations may be combined, sub-divided, or reordered to form an equivalent method without departing from the teachings of the present disclosure. Thus, unless specifically indicated herein, the order and grouping of operations is not a limitation of the present application.
Claims (10)
1. A water removal device comprising:
a control unit;
an oil inlet valve, an oil filter, a water removal filter set, a flowmeter, an oil pump and an oil outlet valve which are sequentially communicated;
the flowmeter and the oil pump are respectively connected with the control unit.
2. The water removal device of claim 1, wherein the water removal filter set comprises a first water removal filter, a second water removal filter, and a third water removal filter in series in sequence;
and the inlet of the first water removal filter is communicated with the oil filter, and the outlet of the third water removal filter is communicated with the flowmeter.
3. The water removal device of claim 1, wherein an exhaust valve is disposed between the oil filter and the oil inlet valve.
4. A water removal device as claimed in claim 3, wherein a first micro water sensor is provided between the oil filter and the exhaust valve, the first micro water sensor being connected to the control unit;
and a second micro water sensor is arranged between the oil outlet valve and the oil pump, and the second micro water sensor is connected with the control unit.
5. The water removal device of claim 4, wherein a first pressure sensor is disposed between the oil filter and the first micro water sensor, the first pressure sensor being connected to the control unit;
a second pressure sensor is arranged between the oil pump and the second micro water sensor, and the second pressure sensor is connected with the control unit.
6. A water removal device as claimed in claim 3, wherein a first temperature sensor is provided between the oil filter and the exhaust valve, the first temperature sensor being connected to the control unit;
and a second temperature sensor is arranged between the oil pump and the oil outlet valve, and the second temperature sensor is connected with the control unit.
7. The water removal apparatus of claim 6, wherein a first temperature sensor is disposed between the oil filter and the first pressure sensor;
a second temperature sensor is arranged between the oil pump and the second pressure sensor.
8. The water removal device of claim 1, wherein a water removal material is disposed within the water removal filter stack.
9. A method of removing water comprising: the water removal device of claim 1 is used for removing water from transformer oil.
10. A transformer oilpaper insulation system comprising: the water removal device of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310602707.9A CN116435061A (en) | 2023-05-25 | 2023-05-25 | Water removal device and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310602707.9A CN116435061A (en) | 2023-05-25 | 2023-05-25 | Water removal device and application thereof |
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| CN202310602707.9A Pending CN116435061A (en) | 2023-05-25 | 2023-05-25 | Water removal device and application thereof |
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- 2023-05-25 CN CN202310602707.9A patent/CN116435061A/en active Pending
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