CN108970229B - Filtering device for removing magnetic impurities in transformer oil - Google Patents
Filtering device for removing magnetic impurities in transformer oil Download PDFInfo
- Publication number
- CN108970229B CN108970229B CN201810890701.5A CN201810890701A CN108970229B CN 108970229 B CN108970229 B CN 108970229B CN 201810890701 A CN201810890701 A CN 201810890701A CN 108970229 B CN108970229 B CN 108970229B
- Authority
- CN
- China
- Prior art keywords
- magnetic
- filter screen
- transformer oil
- funnel
- magnetic 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
- 238000001914 filtration Methods 0.000 title claims abstract description 54
- 239000012535 impurity Substances 0.000 title claims abstract description 45
- 239000002245 particle Substances 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000006247 magnetic powder Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/06—Filters making use of electricity or magnetism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
-
- 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
Abstract
The invention discloses a filtering device for removing magnetic impurities in transformer oil, which comprises: the device comprises a funnel, a guide pipe, an oil tank and a first magnetic filter screen; the funnel mouth of the funnel is connected to the oil tank through a guide pipe; the first magnetic filter screen is arranged in the funnel and used for filtering the transformer oil; the first magnetic filter screen is a magnetic flat plate, and the first magnetic filter screen is provided with a spiral through hole, so that magnetic impurities are removed when the transformer oil passes through the first magnetic filter screen from the through hole. According to the invention, the first magnetic filter screen which is magnetic and provided with the spiral through hole is arranged on the funnel, when the transformer oil flows downwards from the funnel and passes through the spiral through hole when passing through the first magnetic filter screen, vortex can be generated in the transformer oil filtering process, the contact time of the transformer oil and a magnetic filtering channel is prolonged, the filtering speed of removing magnetic impurities in the transformer oil is accelerated, the magnetic impurities are removed efficiently, and fiber particles are obtained effectively.
Description
Technical Field
The invention relates to the technical field of transformer oil treatment, in particular to a filtering device for removing magnetic impurities in transformer oil.
Background
In the electric energy transmission system, a power transformer is used as a key device for electric energy conversion and transmission, and the safe and reliable operation of the power transformer is related to the power supply quality of the whole power grid. Particularly, as a pivot device of a power system, the insulation operation condition and the health level of a large oil-immersed power transformer are directly related to the safety and stability of a power grid. The insulation performance of the transformer is continuously deteriorated as the operation life of the transformer is increased. Under the action of trace water, temperature and oxygen, cellulose molecules in the solid insulation of the power transformer are degraded, so that the fibers are weakened and shortened, the polymerization degree of the fibers is reduced, and the insulation performance of the solid insulation material is directly influenced. At present, the diagnosis of the solid insulation aging degree of the transformer mainly depends on indirect means such as measurement of oiling indexes and the like, the operation is complex, the diagnosis result is limited by the accuracy of measuring equipment, the reliability of the diagnosis result is low, misjudgment is possibly caused, and the maintenance suggestion cannot be timely and effectively provided. The fiber particles falling into the oil from the insulating paper in the aging process are taken as research objects, and the aging degree of the insulating paper is intuitively reflected by researching the aging degree of the fiber particles.
Therefore, extracting transformer oil and then analyzing fiber particles in the transformer oil are important means for those skilled in the art to study the aging degree of solid insulation of the transformer. Magnetic impurities in the transformer oil often interfere with the analysis of the fiber particles, so that the problem of inaccurate analysis is caused. The technician needs to remove the magnetic impurities in the transformer oil before analyzing the fiber particles in the transformer oil.
Therefore, how to remove the magnetic impurities in the transformer oil is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a filtering device for removing magnetic impurities in transformer oil, which is used for solving the technical problem of how to remove the magnetic impurities in the transformer oil.
The invention provides a filtering device for removing magnetic impurities in transformer oil, which comprises: the device comprises a funnel, a guide pipe, an oil tank and a first magnetic filter screen;
the funnel mouth of the funnel is connected to the oil tank through a guide pipe;
the first magnetic filter screen is arranged in the funnel and used for filtering the transformer oil;
the first magnetic filter screen is a magnetic flat plate, and the first magnetic filter screen is provided with a spiral through hole, so that magnetic impurities are removed when the transformer oil passes through the first magnetic filter screen from the through hole.
Preferably, the first and second electrodes are formed of a metal,
the inner wall of the through hole is changed in an S-shaped rule.
Preferably, the first and second electrodes are formed of a metal,
the device also comprises a second magnetic filter screen, and the second magnetic filter screen has the same structure as the first magnetic filter screen;
the second magnetic filter screen is arranged below the first magnetic filter screen and used for further filtering the transformer oil.
Preferably, the first and second electrodes are formed of a metal,
the number of the through holes of the second magnetic filter screen is larger than that of the through holes of the first magnetic filter screen.
Preferably, the first and second electrodes are formed of a metal,
the device also comprises a third filter screen;
the third filter screen is arranged above the funnel mouth of the funnel and used for filtering the transformer oil to obtain fiber particles with required particle sizes.
Preferably, the number of funnels is two, and the same components are arranged on both funnels (i.e. there may be the same first magnetic filter, second magnetic filter, third filter, etc.).
Preferably, the first and second electrodes are formed of a metal,
the device also includes a rubber piston;
the rubber piston is arranged between the guide pipe and the oil tank, so that the guide pipe is connected with the oil tank in a sealing mode.
Preferably, the first and second electrodes are formed of a metal,
the apparatus further comprises a vacuum pump;
the vacuum pump is connected with the oil tank.
Preferably, the first and second electrodes are formed of a metal,
the device also includes a liquid level display column;
the liquid level display column is arranged on the oil tank and used for displaying the liquid level of the oil tank.
Preferably, the first and second electrodes are formed of a metal,
the device also comprises an oil drain valve;
the oil drain valve is connected with the oil tank.
Preferably, the first and second electrodes are formed of a metal,
the device also includes a shield;
the protection casing detachably installs on the funnel.
According to the technical scheme, the invention has the following advantages:
the invention provides a filtering device for removing magnetic impurities in transformer oil, which comprises: the device comprises a funnel, a guide pipe, an oil tank and a first magnetic filter screen; the funnel mouth of the funnel is connected to the oil tank through a guide pipe; the first magnetic filter screen is arranged in the funnel and used for filtering the transformer oil; the first magnetic filter screen is a magnetic flat plate, and the first magnetic filter screen is provided with a spiral through hole, so that magnetic impurities are removed when the transformer oil passes through the first magnetic filter screen from the through hole. According to the invention, the first magnetic filter screen which is magnetic and provided with the spiral through hole is arranged on the funnel, when the transformer oil flows downwards from the funnel and passes through the spiral through hole when passing through the first magnetic filter screen, vortex can be generated in the transformer oil filtering process, the contact time of the transformer oil and a magnetic filtering channel is prolonged, the filtering speed of removing magnetic impurities in the transformer oil is accelerated, the magnetic impurities are removed efficiently, and fiber particles are obtained effectively.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed for describing the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained by those skilled in the art without inventive exercise.
FIG. 1 is a schematic view of an embodiment of a filtering apparatus for removing magnetic impurities from transformer oil according to the present invention;
FIG. 2a is a top view of a first magnetic filter screen in an embodiment of a filtering apparatus for removing magnetic impurities from transformer oil according to the present invention;
FIG. 2b is a front view of a first magnetic filter screen in an embodiment of the filter apparatus for removing magnetic impurities from transformer oil according to the present invention;
FIG. 3 is a schematic diagram illustrating the inner wall of the through hole is changed in an S-shaped manner according to an embodiment of the filtering apparatus for removing magnetic impurities from transformer oil provided by the present invention;
FIG. 4 is a schematic view of a second magnetic filter screen in an embodiment of the filter apparatus for removing magnetic impurities from transformer oil according to the present invention;
FIG. 5 is a top view of a third filter screen in an embodiment of the filter apparatus for removing magnetic impurities from transformer oil according to the present invention;
wherein the reference numerals are:
1: protective cover, 2: funnel, 3: first magnetic filter screen, 4: second magnetic filter screen, 5: third filter screen, 6: catheter, 7: oil inlet valve, 8: rubber piston, 9: oil tank, 10: liquid level display column, 11: oil drain valve, 12: base, 13: pressure gauge, 14: vacuum pump, 15: and a through hole.
Detailed Description
The invention provides a filtering device for removing magnetic impurities in transformer oil, which is used for solving the technical problem of how to remove the magnetic impurities in the transformer oil.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of a filter apparatus for removing magnetic impurities from transformer oil according to the present invention includes: the device comprises a funnel 2, a guide pipe 6, an oil tank 9 and a first magnetic filter screen 3;
the funnel mouth of the funnel 2 is connected to an oil tank 9 through a conduit 6;
the first magnetic filter screen 3 is arranged in the funnel 2 and used for filtering transformer oil;
the first magnetic filter 3 is a magnetic flat plate, and the first magnetic filter 3 is provided with a spiral through hole 15, so that magnetic impurities are removed when the transformer oil passes through the first magnetic filter 3 from the through hole 15.
Referring to fig. 2a and 2b, the first magnetic filter 3 will be described in detail. The first magnetic filter screen 3 is formed by casting and pressing magnetic powder, and is formed by casting and pressing magnetic powder into a magnetic flat plate with an upper magnetic pole having an N pole and a lower magnetic pole having an S pole (or the upper magnetic pole having the S pole and the lower magnetic pole having the N pole), and the periphery of the magnetic flat plate is matched with the inner wall of the funnel 2; then, spiral line channels (spiral through holes 15) with different numbers are formed on the magnetic flat plate through a casting process, the spiral line channels (spiral through holes 15) penetrate through the magnetic flat plate up and down, and the first magnetic filter screen 3 can be manufactured according to the process.
According to the invention, the first magnetic filter screen 3 which is magnetic and is provided with the spiral through hole 15 is arranged on the funnel 2, when the transformer oil flows downwards from the funnel 2 and passes through the spiral through hole 15 when passing through the first magnetic filter screen 3, vortex can be generated in the transformer oil filtering process, the contact time of the transformer oil and a magnetic filtering channel is prolonged, the filtering speed of removing magnetic impurities in the transformer oil is accelerated, the magnetic impurities are removed efficiently, and fiber particles are obtained effectively.
Further, the air conditioner is provided with a fan,
referring to fig. 3, the inner wall of the through hole 15 is changed in an S-shape.
Fig. 3 includes a partially enlarged view of the spiral passage (spiral through hole 15), and as can be seen from a rectangular position schematic frame of the partially enlarged view, the inner wall of the through hole 15 changes in an S-shaped regular manner, and the transformer oil flows from the left side to the right side of the partially enlarged view.
Further, the air conditioner is provided with a fan,
referring to fig. 4, the apparatus further includes a second magnetic filter 4, the second magnetic filter 4 and the first magnetic filter 3 have the same structure;
referring to fig. 4, the second magnetic filter 4 will be described in detail. The second magnetic filter screen 4 is formed by casting and pressing magnetic powder, and is formed by casting and pressing magnetic powder into a magnetic flat plate with an upper magnetic pole having an N pole and a lower magnetic pole having an S pole (or the upper magnetic pole having an S pole and the lower magnetic pole having an N pole), and the periphery of the magnetic flat plate is matched with the inner wall of the funnel 2; then, spiral line channels (spiral through holes 15) with different numbers are formed on the magnetic flat plate through a casting process, the spiral line channels (spiral through holes 15) penetrate through the magnetic flat plate up and down, and the second magnetic filter screen 4 can be manufactured according to the process.
Referring to fig. 1, the second magnetic filter 4 is disposed below the first magnetic filter 3 for further filtering the transformer oil.
Further, the air conditioner is provided with a fan,
the number of the through holes 15 of the second magnetic filter 4 is larger than that of the through holes 15 of the first magnetic filter 3. Referring to fig. 2a, 2b and 4, the number of the through holes 15 of the first magnetic filter 3 is 6 in fig. 2a and 2b, and the number of the through holes 15 of the second magnetic filter 4 is 19 in fig. 4, but this is only schematic in fig. 2a, 2b and 4, and does not represent the number of the through holes 15 actually designed, generally, the number of the through holes 15 of the first magnetic filter 3 is 30, and the number of the through holes 15 of the second magnetic filter 4 is 100 in this embodiment.
Further, the device also comprises a third filter screen 5;
the third filter screen 5 is arranged above the funnel mouth of the funnel 2 and used for filtering the transformer oil to obtain fiber particles with required particle size. After the transformer oil is filtered, the fiber particles with the required particle size can be obtained from the third filter screen 5.
Further, the device may be provided with a plurality of funnels 2 with filter screens arranged therein as described above, i.e. there may be a large number of funnels 2, but in order to increase the filtering efficiency while saving costs, it is an optimal solution to provide two funnels 2.
Therefore, in the present embodiment, the number of the funnels 2 in fig. 1 is two, and the same components are arranged on the two funnels 2 (i.e. the same first magnetic filter 3, second magnetic filter 4, third magnetic filter 5, etc. may be provided). Accordingly, the conduit 6 is embodied as a two-in-one conduit.
Further, the device also comprises a rubber piston 8;
a rubber piston 8 is arranged between the conduit 6 and the tank 9 so that the conduit 6 is sealingly connected to the tank 9.
Further, the apparatus also includes a vacuum pump 14; the vacuum pump 14 is connected to the oil tank 9. The vacuum pump 14 is used to evacuate the tank 9 so that the transformer oil on the funnel 2 is filtered into the tank 9 more quickly.
The vacuum pump 14 is also provided with a pressure gauge 13 for displaying the pressure of the vacuum pump 14.
Further, the device also comprises a liquid level display column 10; a liquid level display post 10 is mounted on the fuel tank 9 for displaying the liquid level of the fuel tank 9. The liquid level display post 10 may be a transparent portion of the housing of the fuel tank 9, marked with a scale.
Further, the device also comprises an oil drain valve 11; the oil drain valve 11 is connected with the oil tank 9. The drain valve 11 is used for draining the oil tank 9.
Further, the device also comprises a protective cover 1; the shield 1 is detachably mounted on the funnel 2. When the protective cover 1 is installed, dust in the air can be prevented from falling onto the funnel 2, and when transformer oil needs to be added, the protective cover 1 can be detached.
Furthermore, an oil inlet valve 7 can be arranged on the conduit 6 of the device, and the start-stop and speed of filtration can be controlled.
Further, the apparatus further comprises a base 12, the base 12 being mounted under the fuel tank 9 for supporting the entire apparatus.
The invention aims to solve the problems that the existing filtering method for filtering fiber particles in transformer oil is low in separation efficiency and cannot remove magnetic impurities in the transformer oil through a filtering method for efficiently removing the magnetic impurities in the transformer oil. By adopting the spiral magnetic filtering channel (spiral through hole 15), the earth rotation effect is utilized, and the S-shaped magnetic filtering channel design is combined, so that eddy current is generated in the transformer oil filtering process, the contact time of the transformer oil and the magnetic filtering channel is prolonged, the filtering speed for removing the magnetic impurities in the transformer oil is increased, the magnetic impurities are efficiently removed, and fiber particles are effectively obtained.
The filtering device for removing the magnetic impurities in the transformer oil in the embodiment comprises a stainless steel funnel 2, a filter screen, an oil tank 9 and a vacuum pump 14. Three clamping grooves are arranged in the stainless steel funnel 2, a first magnetic filter screen 3 and a second magnetic filter screen 4 are arranged from top to bottom in sequence, the third filter screen 5 (first magnetic filter screen 3 and second magnetic filter screen 4 are all made up of magnetic powder and are stationed and pressed, magnetic pole polarity above the magnetic filter screen is the N pole, magnetic pole polarity below is the S pole, in order to form the closed magnetic circuit, the magnetic filter screen forms the spiral line channel with different numbers through the process of stationing, in the filter process of transformer oil, transformer oil can flow to the next process along the spiral line channel, in order to further increase the filter effect at the same time, the inner diameter of the spiral line channel is not a permanent one, along the spiral line filter channel, the inner diameter changes with S-shaped law, the number of magnetic rings of the first magnetic filter screen 3 is 30, the number of magnetic rings of the second magnetic filter screen 4 is 100, the mesh number of the third filter screen 5 is 400). A shield was placed over the stainless steel funnel 2 to prevent contamination of the sample by ambient air during the test.
The filtering device for efficiently removing magnetic impurities in transformer oil is shown in fig. 1, and in a structural schematic diagram, three different filtering nets, namely a first magnetic filtering net 3, a second magnetic filtering net 4 and a third filtering net 5, are sequentially arranged on a stainless steel funnel 2 from top to bottom. Stainless steel funnel 2 links to each other with oil tank 9 through pipe 6, and oil tank 9 is used for holding the transformer insulating oil after the filtration, sets up inlet valve 7 in pipe 6 department to installation liquid level display post 10 on the oil tank, insulating fluid level height in liquid level display post 10 is arranged in instructing current oil tank 9, oil tank 9 bottom installation fuel outlet valve 11. The oil tank 9 is connected to a vacuum pump 14 for reducing the pressure in the flask. When an experiment for separating fiber particles in the transformer oil is carried out, the oil inlet valve 7 is closed, the vacuum pump is started, after the vacuum pump works for 5 minutes, transformer insulating oil is added into the stainless steel funnel 2 at a constant speed, and when the transformer insulating oil approaches 2/3 of the funnel, the protective cover 1 is covered, and the oil inlet valve 7 is opened. Under the action of gravity and pressure difference, the transformer insulating oil in the stainless steel funnel 2 flows through the first magnetic filter screen 3, the second magnetic filter screen 4 and the third filter screen 5 to the oil tank 9. The first magnetic filter screen 3 and the second magnetic filter screen 4 have different numbers of magnetic rings and are arranged in a ladder way, so that the magnetic impurities in the insulating oil can be effectively removed, and the third filter screen 5 has higher mesh number, so that fiber particles with required particle size can be obtained.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a get rid of filter equipment of magnetic impurities in transformer oil which characterized in that includes: the device comprises a funnel, a guide pipe, an oil tank and a first magnetic filter screen;
the funnel mouth of the funnel is connected to the oil tank through a conduit;
the first magnetic filter screen is arranged in the funnel and used for filtering transformer oil;
the first magnetic filter screen is a magnetic flat plate, and a spiral through hole is formed in the first magnetic filter screen, so that magnetic impurities are removed when the transformer oil passes through the first magnetic filter screen from the through hole, and the transformer oil with fiber particles is obtained; the first magnetic filter screen is formed by casting and pressing magnetic powder;
the inner wall of the through hole is changed in an S-shaped rule;
wherein the device further comprises a vacuum pump;
the vacuum pump is connected with the oil tank;
the liquid level display column is also included;
the liquid level display column is arranged on the oil tank and used for displaying the liquid level of the oil tank.
2. The filtering device for removing the magnetic impurities in the transformer oil according to claim 1, further comprising a second magnetic filter screen, wherein the second magnetic filter screen has the same structure as the first magnetic filter screen;
the second magnetic filter screen is arranged below the first magnetic filter screen and used for further filtering the transformer oil.
3. The filtering apparatus for removing magnetic impurities from transformer oil according to claim 2, wherein the number of through holes of the second magnetic filter is greater than the number of through holes of the first magnetic filter.
4. The filtering device for removing the magnetic impurities in the transformer oil according to claim 1, further comprising a third filter screen;
the third filter screen is arranged above the funnel mouth of the funnel and used for filtering the transformer oil to obtain fiber particles with required particle sizes.
5. The filtering device for removing the magnetic impurities in the transformer oil as claimed in claim 1, wherein the number of the funnels is two.
6. The filtering device for removing the magnetic impurities in the transformer oil as claimed in claim 1, further comprising a rubber piston;
the rubber piston is arranged between the guide pipe and the oil tank, so that the guide pipe is connected with the oil tank in a sealing mode.
7. The filtering device for removing the magnetic impurities in the transformer oil according to claim 1, further comprising a protective cover;
the protective cover is detachably mounted on the funnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810890701.5A CN108970229B (en) | 2018-08-07 | 2018-08-07 | Filtering device for removing magnetic impurities in transformer oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810890701.5A CN108970229B (en) | 2018-08-07 | 2018-08-07 | Filtering device for removing magnetic impurities in transformer oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108970229A CN108970229A (en) | 2018-12-11 |
| CN108970229B true CN108970229B (en) | 2021-07-09 |
Family
ID=64556043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810890701.5A Active CN108970229B (en) | 2018-08-07 | 2018-08-07 | Filtering device for removing magnetic impurities in transformer oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108970229B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002102A (en) * | 2021-10-29 | 2022-02-01 | 海南金海浆纸业有限公司 | Method for detecting heavy impurities in papermaking wood chips |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962022A (en) * | 2005-10-31 | 2007-05-16 | 通用汽车环球科技运作公司 | Powdered metal magnetic filter and method for manufacturing same |
| CN206081815U (en) * | 2016-10-12 | 2017-04-12 | 广东电网有限责任公司电力科学研究院 | Filter of fibre granule in isolating transformer oil |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6776905B2 (en) * | 2002-08-02 | 2004-08-17 | Jen-Pen Chang | Magnetizing and activating processing unit for liquid material |
| CN108097060A (en) * | 2017-12-25 | 2018-06-01 | 合肥万呈鑫陶瓷膜科技有限公司 | A kind of ceramic membrane of good filtration effect |
-
2018
- 2018-08-07 CN CN201810890701.5A patent/CN108970229B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962022A (en) * | 2005-10-31 | 2007-05-16 | 通用汽车环球科技运作公司 | Powdered metal magnetic filter and method for manufacturing same |
| CN206081815U (en) * | 2016-10-12 | 2017-04-12 | 广东电网有限责任公司电力科学研究院 | Filter of fibre granule in isolating transformer oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108970229A (en) | 2018-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108970229B (en) | Filtering device for removing magnetic impurities in transformer oil | |
| CN105736395B (en) | A kind of sewage pump system that can monitor water quality | |
| CN201352190Y (en) | Negative ion sampling device for purifying indoor air | |
| CN211393942U (en) | Three-phase separator | |
| CN209640048U (en) | A kind of gas trap for environmental monitoring analysis of chemical elements | |
| CN105056666B (en) | A kind of flammable powders vacuum cleaner and dust collection method | |
| CN218481391U (en) | Food ingredient detector | |
| CN219449414U (en) | Portable multifunctional novel filtering device | |
| CN107421800A (en) | A kind of Water Test Kits with filter mechanism | |
| CN205599201U (en) | Detect examination pipe clip of battery gassing volume usefulness | |
| CN109752492A (en) | A kind of flue gas analysis device of the boiler for Chemical Manufacture | |
| CN112814652B (en) | Visual model cauldron for ultralow gas permeability | |
| CN218687542U (en) | Exhaust treatment device for environmental detection | |
| CN211086020U (en) | Improved oil-water separation oil fume monitor | |
| CN219023686U (en) | Improved filtering device with filter element detection function | |
| CN220084420U (en) | Industrial waste water river sampling equipment | |
| CN206736037U (en) | A kind of high-concentration organic wastewater treatment device | |
| CN209115096U (en) | A kind of sump oil recovering device for oil well flow meters | |
| CN217490085U (en) | Sewage steam stripping pretreatment device | |
| CN218847915U (en) | Filter material testing device | |
| CN212300957U (en) | Water quality sample collector | |
| CN214121710U (en) | Water quality sampling device for industrial sewage monitoring | |
| CN212300465U (en) | Channel flow measuring equipment | |
| CN204085989U (en) | Coke-oven gas device for filtering impurities | |
| CN206639246U (en) | A kind of water clock counter |
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 |