CN107424757B - Environment-friendly oil immersed transformer - Google Patents
Environment-friendly oil immersed transformer Download PDFInfo
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- CN107424757B CN107424757B CN201710338181.2A CN201710338181A CN107424757B CN 107424757 B CN107424757 B CN 107424757B CN 201710338181 A CN201710338181 A CN 201710338181A CN 107424757 B CN107424757 B CN 107424757B
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- inner shell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- 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
- H01F27/105—Cooling by special liquid or by liquid of particular composition
-
- 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
- H01F27/33—Arrangements for noise damping
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Transformer Cooling (AREA)
Abstract
The environment-friendly oil immersed transformer comprises an oil tank outer shell, an oil tank inner shell, an iron core and a winding which are positioned in the center of the oil tank inner shell, oil purifying devices which are positioned at two sides of the iron core and the winding and form a cavity with the side wall of the oil tank inner shell, and a noise reducing device which is positioned between the oil tank inner shell and the oil tank outer shell, wherein the noise reducing device comprises a noise reducing interlayer and a cooling interlayer; the oil purifying device is a forced purifying device arranged in the oil tank and comprises a first purifier for filtering nonmetallic impurities and a second purifier for adsorbing the metallic impurities, and air exchange is not carried out with the outside, so that the purity of the transformer oil can be improved; the two devices are mutually coordinated, so that the effects of noise reduction, oil purification and cooling can be achieved, and the device has good environmental protection and energy conservation.
Description
Technical Field
The invention relates to the field of transformers, in particular to an environment-friendly oil immersed transformer.
Background
The transformer is one of the essential main equipment of power plant and substation, can divide into dry-type transformer, oil-immersed transformer, fluoride transformer according to the cooling method roughly, and oil-immersed transformer mainly comprises iron core, winding, oil tank, conservator, insulating sleeve, tapping switch and gas relay etc. but the transformer has following problem when in actual use:
(1) At present, most of transformer oil tanks are provided with oil purifiers, and built-in adsorbents are used for absorbing water, acid and metal impurities in oil through oil circulation so as to achieve the purposes of keeping transformer oil clean and prolonging the service life of a transformer, but the devices have the defects that for a transformer with stable operation, the temperature difference between the transformer oil at the middle upper part and the transformer oil at the lower part of the oil tank is not very large, the convection current formed in the oil tank is very slow, and the circulation purification effect is poor; in addition, the commonly used oil purifier is mostly provided with an adsorbent, the functions of purifying the transformer oil and prolonging the service life of the transformer oil are achieved through adsorption and filtration, but the adsorbent does not have the function of adsorbing metallic impurities, the transformer oil cannot be thoroughly cleaned, and the adsorbent needs to be replaced after the adsorption reaches saturation, however, the transformer oil in the oil tank needs to be completely replaced, so that the operation is more inconvenient, and the transformer oil is wasted;
(2) When the transformer operates, the alternating magnetic field generates periodic alternating acting force on the iron core and the coil to cause vibration, and the vibration is transmitted to the oil tank through the iron core clamping piece, the pad foot and the like to generate great noise, so that daily life of surrounding residents is influenced; along with the enhancement of social environmental awareness, people have increasingly strict perception, understanding and control of noise, at present, some means are also used for reducing the noise generated by a transformer, such as installing a sound insulation wall in a transformer room, attaching porous felt, fiber rock wool and other sound absorption materials to the wall and the ceiling, or making sound absorption blocks to be hung indoors.
Disclosure of Invention
In order to solve the technical problems, the invention provides the environment-friendly oil immersed transformer, which is internally provided with the noise reduction device and the oil purifying device, wherein the two devices are mutually coordinated, so that the effects of noise reduction, oil purifying and cooling can be achieved, and the environment-friendly oil immersed transformer has good environment-friendly energy saving performance.
The technical scheme adopted by the invention is as follows: the utility model provides an environmental protection oil-immersed transformer, includes oil tank shell, oil tank inner shell, be located the core and the winding in oil tank inner shell center, be located core and winding both sides and with the oil purification device of oil tank inner shell lateral wall formation cavity and be located the oil tank in, the noise reduction device between the shell, oil tank shell top be equipped with conservator and oil pump, noise reduction device include two intermediate layers, respectively fall the intermediate layer of making an uproar and cooling intermediate layer, the intermediate layer of making an uproar be located the outermost layer of oil tank shell, including multilayer thermal-insulated glass wool board and the cooling tube of placing between adjacent thermal-insulated glass wool board, cooling intermediate layer be located between oil purification device and the intermediate layer of making an uproar, cooling tube and cooling intermediate layer between communicate each other and all be full of phase transition coolant liquid to make phase transition coolant liquid circulation flow through setting up the circulating pump;
the oil purifying device comprises a sealing cover I, a fixed partition board vertically arranged at the top of an oil tank inner shell, an oil outlet filter screen connected with the fixed partition board and vertically fixed at the bottom of the oil tank inner shell, a first purifier and a second purifier fixed on the side wall of the oil tank inner shell and the fixed partition board, wherein the top of the oil tank inner shell and the top of the outer shell are respectively provided with a sealing cover II matched with the sealing cover I, the sealing covers I and the sealing covers II are respectively provided with a through hole for allowing two oil inlet pipes separated by an oil supply pillow to pass through, the first purifier is arranged below the sealing cover I and comprises a large-aperture filter screen for filtering nonmetallic impurities, a first porous partition board positioned below the large-aperture filter screen and an adsorbent placed between the large-aperture filter screen and the first porous partition board, and the second purifier is arranged below the first purifier and comprises a second porous partition board and a magnet placed between the first porous partition board and the second porous partition board and used for adsorbing the metallic impurities.
Preferably, the pore diameter of the first porous separator is smaller than the size of the adsorbent, and the pore diameter of the second porous separator is smaller than the size of the magnet.
As a preferable scheme, the aperture of the large-aperture filter screen is 50-200 meshes, and the aperture of the oil outlet filter screen is 200-500 meshes.
Preferably, the oil inlet pipe is provided with a valve.
As the preferable scheme, each surface of the inner wall of the oil tank inner shell is provided with uniform arc-shaped bulges, and the height of each bulge is 2-3 mm.
As a preferable scheme, the wall thickness of the oil tank outer shell and the wall thickness of the oil tank inner shell are 8-10 mm.
As a preferable scheme, the inside of the heat-insulating glass wool board is porous, and the number of layers is 2-4.
As the preferable scheme, cooling tube and thermal-insulated glass wool board cooperate, set up the number and be 1~3, and communicate each other between a plurality of cooling tubes.
As a preferable scheme, the bottom of the oil tank shell is provided with a shock absorption protective sleeve, and 4 bottom pads are arranged below the shock absorption protective sleeve.
As an optimal scheme, the shock-absorbing protective sleeve and the base pad are made of high-elasticity flexible materials, and the base pad is provided with a grounding screw for fixing.
The beneficial effects of the invention are as follows:
the environment-friendly oil immersed transformer is internally provided with the noise reduction device and the oil purifying device, wherein the oil purifying device is a forced purifying device and is arranged in the oil tank, and a plurality of purifying devices which are convenient to replace are arranged in the oil tank, so that air exchange with the outside is avoided, and the purity of transformer oil can be improved; the noise reduction device comprises a noise reduction interlayer and a cooling interlayer, wherein the noise reduction interlayer adopts a porous glass wool board, is nearest to a noise source, can effectively absorb noise, is arranged in the oil tank, can avoid the diffusion of some fine fibers, reduces environmental pollution, and can effectively reduce the temperature of transformer oil; the two devices are mutually coordinated, so that the effects of noise reduction, oil purification and cooling can be achieved, the environment-friendly energy-saving performance is good, and the beneficial effects are particularly shown:
(1) The oil purifier commonly used in the market is generally arranged at the outer side of an oil tank, and a built-in adsorbent absorbs moisture, acid and metal impurities in oil through oil circulation so as to achieve the purposes of keeping transformer oil clean and prolonging the service life of a transformer, however, the temperature difference between the transformer oil at the upper part and the transformer oil at the lower part in the oil tank is not very large, the convection current formed in the oil tank is very slow, and the circulation purifying effect is poor;
(2) The invention divides the purification process into two processes of adsorption and filtration, and is provided with a first purifier, a second purifier and an oil outlet filter screen, wherein the first purifier is arranged at the top of the oil purification device and comprises a large-aperture filter screen, a first porous partition board positioned below the large-aperture filter screen and an adsorbent arranged between the large-aperture filter screen and the first porous partition board, and the above is a first purification process for purifying moisture and nonmetallic impurities in the transformer oil; a second purifier is arranged below the first purifier and comprises a second porous partition plate and a magnet arranged between the first porous partition plate and the second porous partition plate, wherein the second purification procedure is used for purifying metal impurities in the transformer oil; an oil outlet filter screen is arranged below the second purifier, which is a third purification procedure, and improves the purity of the transformer oil to the greatest extent;
(3) The oil purifier in the market usually needs to clean the transformer oil in the oil tank when the adsorbent is replaced, the operation is more inconvenient, and meanwhile, the transformer oil is wasted;
(4) The invention sets the noise reduction device in the oil tank, including two interlayers, namely the noise reduction interlayer and the cooling interlayer, the noise reduction interlayer absorbs the noise generated by the iron core in a short distance by adopting the porous glass wool board, and avoids the outward diffusion of the noise, but because the porous glass wool board has good heat preservation effect, the heat dissipation and cooling of the transformer oil in the oil tank are not affected, a cooling pipe is also arranged between the adjacent porous glass wool boards, the cooling pipe is communicated with the cooling interlayer, the temperature between the porous glass wool boards can be effectively reduced by filling the cooling pipe and the cooling interlayer with phase change cooling liquid, and a low temperature layer is formed around the transformer oil, and the noise generated by the iron core can be reduced while the heat dissipation effect of the transformer oil is not affected or even increased;
(5) According to the invention, the damping protective sleeve is arranged outside the transformer shell, the rigid connection between the metal shell and the ground can be separated by selecting the high-elastic flexible material, and meanwhile, 4 base pads are arranged below the damping protective sleeve, so that a certain sound absorption effect is achieved, and noise is effectively prevented from being transmitted to the ground and the air through the shell;
(6) The invention thickens the inner wall and the outer wall of the oil tank of the transformer, can play a certain noise blocking effect, simultaneously roughens the periphery of the inner wall of the oil tank, is provided with a plurality of arc-shaped bulges on the surface, is too smooth, is easy to generate echo to increase the volume of noise, and can refract sound waves for multiple times by the internal roughening treatment, thereby effectively weakening the noise.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate and together with the description serve to explain the invention.
Fig. 1 is a schematic structural diagram of an environmentally friendly oil immersed transformer;
FIG. 2 is a schematic structural view of a noise reducer;
FIG. 3 is a schematic overall construction of an oil cleaning apparatus;
FIG. 4 is a schematic partial construction of an oil cleaning apparatus;
reference numerals: 1. the oil tank comprises an oil tank outer shell, 101, a conservator, 102, an oil pump, 103, an oil inlet pipe, 104, a sealing cover II, 105, a valve, 106, a shock absorption protective sleeve, 107, a bottom pad, 108, a grounding screw, 2, an oil tank inner shell, 201, an arc-shaped bulge, 3, an oil purifying device, 301, a sealing cover I, 302, a fixed partition board, 303, an oil outlet filter screen, 4, a noise reducing device, 5, a noise reducing interlayer, 501, a heat insulation glass wool board, 502, a cooling pipe, 503, a circulating pump, 6, a cooling interlayer, 601, phase change cooling liquid, 7, a first purifier, 701, a large-aperture filter screen, 702, a first porous partition board, 703, an adsorbent, 8, a second purifier, 801, a second porous partition board, 802, a magnet, 9, an iron core and a winding.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions will be clearly and completely described below with reference to the drawings and the embodiments of the present invention. The following describes the aspects of the invention in detail in connection with specific embodiments:
the environment-friendly oil immersed transformer comprises an oil tank outer shell 1, an oil tank inner shell 2, an iron core and a winding 9 which are positioned in the center of the oil tank inner shell 2, an oil purifying device 3 which is positioned at two sides of the iron core and the winding 9 and forms a cavity with the side wall of the oil tank inner shell 2, and a noise reducing device 4 which is positioned between the oil tank inner shell and the oil tank outer shell, wherein the top of the oil tank outer shell 1 is provided with a conservator 101 and an oil pump 102, the noise reducing device 4 comprises two interlayers which are respectively a noise reducing interlayer 5 and a cooling interlayer 6, the noise reducing interlayer 5 is positioned at the outermost layer of the oil tank shell, the noise reducing interlayer 5 comprises a plurality of layers of heat insulating glass wool boards 501 and cooling pipes 502 which are arranged between the adjacent heat insulating glass wool boards 501, the cooling interlayer 6 is positioned between the oil purifying device 3 and the noise reducing interlayer 5, and the cooling interlayer 6 are communicated with each other and are filled with phase change cooling liquid, and the phase change cooling liquid circularly flows through the arrangement of a circulating pump 503;
the oil purifying device 3 comprises a sealing cover I301, a fixed partition 302 vertically arranged at the top of an oil tank inner shell 2, an oil outlet filter screen 303 connected with the fixed partition 302 and vertically fixed at the bottom of the oil tank inner shell 2, a first purifier 7 and a second purifier 8 fixed on the side wall of the oil tank inner shell 2 and the fixed partition 302, wherein sealing covers II 104 matched with the sealing cover I301 are arranged at the tops of the oil tank inner shell and the outer shell, through holes for allowing two oil inlet pipes 103 separated by an oil supply pillow 101 to pass through are formed in the sealing cover I301 and the sealing cover II 104, the first purifier 7 is arranged below the sealing cover I301 and comprises a large-aperture filter screen 701 for filtering nonmetallic impurities, a first porous partition 702 positioned below the large-aperture filter screen 701 and an adsorbent 703 placed between the large-aperture filter screen 701 and the first porous partition 702, and the second purifier 8 is arranged below the first purifier 7 and comprises a second porous partition 801 and a magnet 802 placed between the first porous partition 702 and the second porous partition 801 for adsorbing the nonmetallic impurities.
Preferably, the pore size of the first porous partition 702 is smaller than the size of the adsorbent 703, and the pore size of the second porous partition 801 is smaller than the size of the magnet 802.
Preferably, the pore size of the large pore size filter 701 is 50-200 mesh, and the pore size of the oil outlet filter 303 is 200-500 mesh.
Preferably, the oil inlet pipe 103 is provided with a valve 105.
As a preferable scheme, each surface of the inner wall of the oil tank inner shell 2 is provided with uniform arc-shaped bulges 201, and the heights of the bulges are 2-3 mm.
As a preferable scheme, the wall thickness of the oil tank outer shell 1 and the wall thickness of the oil tank inner shell 2 are 8-10 mm.
Preferably, the inside of the heat insulation glass wool board 501 is porous, and the number of layers is 2-4.
Preferably, the cooling pipes 502 are matched with the heat-insulating glass wool boards 501, the number of the cooling pipes 502 is 1-3, and the cooling pipes 502 are mutually communicated.
Preferably, the bottom of the oil tank shell 1 is provided with a shock absorbing protective sleeve 106, and 4 bottom pads 107 are arranged below the shock absorbing protective sleeve.
Preferably, the shock absorbing protective sleeve 106 and the bottom pad 107 are made of high-elasticity flexible materials, and the bottom pad 107 is provided with a grounding screw 108 for fixing.
The cleaning and replacing process of the oil purifying device of the environment-friendly oil immersed transformer is as follows:
after the oil purifying device is used for a period of time, the porous partition plate, the filter screen, the adsorbent and the magnet in the oil purifying device 3 can be cleaned and replaced, at the moment, the valve 105 on the oil inlet pipe 103 is required to be closed, the inner shell and the outer shell of the oil tank and the sealing cover at the top of the oil purifying device are opened, the large-aperture filter screen 701 positioned at the upper part of the oil purifying device 3 is taken out and cleaned, the adsorbent 703 is taken out and replaced with a new adsorbent, then the magnet 802 is taken out and metal impurities adhered on the magnet are removed, finally whether the oil outlet filter screen 303 is blocked or not can be checked, the replacement can be timely cleaned, and all components after the treatment are sequentially installed in the oil inlet tank and sealed.
The embodiments described above are some, but not all embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Claims (8)
1. The environment-friendly oil immersed transformer comprises an oil tank outer shell (1), an oil tank inner shell (2), an iron core and a winding (9) which are positioned in the center of the oil tank inner shell (2), an oil purifying device (3) which is positioned at two sides of the iron core and the winding (9) and forms a cavity with the side wall of the oil tank inner shell (2), and a noise reducing device (4) which is positioned between the oil tank inner shell and the oil tank outer shell, wherein the top of the oil tank outer shell (1) is provided with a conservator (101) and an oil pump (102), the environment-friendly oil immersed transformer is characterized in that the noise reducing device (4) comprises two interlayers, namely a noise reducing interlayer (5) and a cooling interlayer (6), the noise reducing interlayer (5) is positioned at the outermost layer of the oil tank shell, comprises a plurality of layers of heat insulating glass sheets (501) and cooling pipes (502) which are arranged between the adjacent heat insulating glass sheets (501), the cooling interlayer (6) is positioned between the oil purifying device (3) and the noise reducing interlayer (5), and the cooling interlayer (6) are mutually communicated and are all full of phase-change cooling liquid (601), and circulating pump (503) is arranged to enable the phase change liquid (601) to circulate;
the oil purifying device (3) comprises a sealing cover I (301), a fixed partition plate (302) vertically arranged at the top of an oil tank inner shell (2), an oil outlet filter screen (303) connected with the fixed partition plate (302) and vertically fixed at the bottom of the oil tank inner shell (2), a first purifier (7) and a second purifier (8) which are fixed on the side wall of the oil tank inner shell (2) and the fixed partition plate (302), wherein sealing covers II (104) which can be matched with the sealing cover I (301) are arranged at the tops of the oil tank inner shell and the outer shell, through holes through which two oil inlet pipes (103) separated by an oil pillow (101) penetrate are formed in the sealing cover I (301), the first purifier (7) is arranged below the sealing cover I (301) and comprises a large-aperture filter screen (701) for filtering nonmetallic impurities, a first porous partition plate (702) positioned below the large-aperture filter screen (701) and an adsorbent (703) placed between the large-aperture filter screen (702), and the second purifier (8) is arranged below the first porous filter screen (702) and the second porous partition plate (801) and is placed below the first porous partition plate (801) and is used for adsorbing the impurities; the pore diameter of the first porous partition board (702) is smaller than the size of the adsorbent (703), and the pore diameter of the second porous partition board (801) is smaller than the size of the magnet (802); the oil inlet pipe (103) is provided with a valve (105).
2. The environment-friendly oil immersed transformer according to claim 1, wherein the pore diameter of the large pore diameter filter screen (701) is 50-200 meshes, and the pore diameter of the oil outlet filter screen (303) is 200-500 meshes.
3. The environment-friendly oil immersed transformer according to claim 1, wherein uniform arc-shaped protrusions (201) are arranged on each surface of the inner wall of the oil tank inner shell (2), and the heights of the protrusions are 2-3 mm.
4. The environment-friendly oil immersed transformer according to claim 1, wherein the wall thickness of the oil tank outer shell (1) and the wall thickness of the oil tank inner shell (2) are 8-10 mm.
5. The environment-friendly oil immersed transformer according to claim 1, wherein the inside of the heat insulation glass wool board (501) is porous, and the number of layers is 2-4.
6. The environment-friendly oil immersed transformer according to claim 1, wherein the number of the cooling pipes (502) is 1-3 and the cooling pipes (502) are mutually communicated, and the cooling pipes are matched with the heat-insulating glass wool board (501).
7. An environment-friendly oil immersed transformer according to claim 1, wherein a shock-absorbing protective sleeve (106) is arranged at the bottom of the oil tank shell (1), and 4 base pads (107) are arranged below the shock-absorbing protective sleeve.
8. The environment-friendly oil immersed transformer according to claim 7, wherein the shock-absorbing protective sleeve (106) and the bottom pad (107) are made of high-elasticity flexible materials, and the bottom pad (107) is provided with a grounding screw (108) for fixing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710338181.2A CN107424757B (en) | 2017-05-15 | 2017-05-15 | Environment-friendly oil immersed transformer |
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| CN201710338181.2A CN107424757B (en) | 2017-05-15 | 2017-05-15 | Environment-friendly oil immersed transformer |
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| CN107424757A CN107424757A (en) | 2017-12-01 |
| CN107424757B true CN107424757B (en) | 2023-05-09 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674177B (en) * | 2018-08-13 | 2024-06-07 | 天津开发区天盈企业有限公司 | Novel energy-saving oil-reducing oil tank |
| CN109058359B (en) * | 2018-10-17 | 2020-11-03 | 哈尔滨工业大学 | Phase-change temperature-control fluid damper |
| CN110265208B (en) * | 2019-07-04 | 2024-04-19 | 江苏恒屹变压器股份有限公司 | Oil immersed transformer convenient to clearance oil duct |
| CN110718369B (en) * | 2019-10-28 | 2022-06-07 | 镇江金能电力科技有限公司 | Explosion-proof isolation transformer |
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| CN2617012Y (en) * | 2003-04-01 | 2004-05-19 | 新疆特变电工股份有限公司 | Oil-cleaning device for transformer with forced oil circulation |
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| CN107424757A (en) | 2017-12-01 |
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