CN110729114A - Distribution transformer with iron core replacement function - Google Patents
Distribution transformer with iron core replacement function Download PDFInfo
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- CN110729114A CN110729114A CN201911027490.3A CN201911027490A CN110729114A CN 110729114 A CN110729114 A CN 110729114A CN 201911027490 A CN201911027490 A CN 201911027490A CN 110729114 A CN110729114 A CN 110729114A
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- iron core
- plate
- movable
- distribution transformer
- fixedly connected
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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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
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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
- H01F27/02—Casings
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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
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
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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
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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
- H01F27/085—Cooling by ambient air
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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
- H01F27/23—Corrosion protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a distribution transformer with an iron core replacing function, which comprises a shell, a mounting plate, a mounting seat, a motor, a connecting seat, a transmission gear, a driving gear, a screw rod, a movable block, a supporting rod, a movable groove, an iron core seat, a fixed frame, a limiting plate, a limiting hole, a fixed plate, a heat dissipation plate, an iron core, a moisture-proof box, a locking bolt, a dust removal net, an air inlet pipe, a side plate, a sliding groove, a sliding block, a threaded hole, an adjusting hole, a connecting plate, an adjusting bolt, a semiconductor refrigerating sheet, a heat dissipation fan, a filter screen, an active carbon adsorption net, a breathable sponge, a movable. The iron core fixing device is reasonable in structure, the driving gear is driven to rotate through the motor, the driving gear drives the transmission gear in meshed connection to rotate, the transmission gear drives the screw to rotate inside the fixing frame, the screw drives the two movable blocks in threaded connection to be close to each other, the movable blocks drive the limiting plates to slide along the movable grooves, and the two limiting plates clamp and fix the iron core base, so that the iron core fixing device is convenient to install, disassemble and maintain.
Description
Technical Field
The invention relates to a distribution transformer, in particular to a distribution transformer with an iron core replacing function, and belongs to the technical field of transformer application.
Background
Distribution transformers, referred to as "distribution transformers", refer to stationary electrical devices in an electrical power system that transmit ac power by converting ac voltage and current according to the law of electromagnetic induction, and in some regions, power transformers of voltage class less than 35 KV (mostly 10KV and below) are referred to as "distribution transformers", referred to as "distribution transformers". The site and place of the distribution transformer are the substation, and the distribution transformer is suitable to be installed on the column or installed in the open air, and the installation mode, installation notice, supply and distribution mode, capacity selection, operation and maintenance and the like are described in detail.
Current dry-type transformer core, it is used for isolated moisture mainly to increase the gasket in the bottom of transformer to handle dampproofing, but under the humid environment, the inside moisture of air is great, lead to moisture to enter into the inside erosion that causes of iron core body, transformer core work a period of time can produce a large amount of heat energy simultaneously, lead to transformer core load loss and impedance voltage amplitude of rise great, the influence is used, and general transformer core installs through the iron core seat, fix through a large amount of bolts and nuts, when maintaining and changing, inconvenient dismantlement to the iron core, when installing fixedly, consume a large amount of time easily. Therefore, a distribution transformer having an iron core replacement function is proposed to address the above problems.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a distribution transformer having an iron core replacement function.
The invention achieves the aim through the following technical scheme, and the distribution transformer with the iron core replacement function comprises a shell, a fixing device, an adjusting device and a damp-proof heat dissipation device;
the fixing device comprises a fixing frame arranged inside the shell, a supporting rod is fixedly connected inside the fixing frame, the top end of the supporting rod is fixedly connected with a connecting seat, a motor is arranged at the top of the connecting seat, an output end of the motor is sleeved with a driving gear, a screw rod is rotatably connected inside the fixing frame through a bearing, two ends of the screw rod are in threaded connection with movable blocks, and the top ends of the movable blocks are fixedly connected with limiting plates;
the adjusting device comprises a fixed plate fixedly connected to the top end of the limiting plate, one end of the fixed plate is fixedly connected with the side plate, and one end of the side plate is fixedly connected with the connecting plate;
dampproofing heat abstractor includes the dampproofing case of fixed connection on the inside top of casing, the semiconductor refrigeration piece is installed to the one end lateral wall of dampproofing case, the internally mounted of dampproofing case has radiator fan, the fixed pipe of inside fixed connection of dampproofing case, the equal fixed connection heating panel of both ends lateral wall of casing.
Preferably, the mounting panel is all installed to the top and the bottom of casing, just the one end fixed connection mount pad of mounting panel.
Preferably, the top of the fixed frame is provided with a movable groove, and the inside of the movable groove is slidably connected with the limiting plate.
Preferably, one end of the screw rod is sleeved with a transmission gear, and the transmission gear is meshed with the driving gear.
Preferably, a sliding groove is formed in one end of the side plate, the sliding groove is connected with a sliding block in a sliding mode, and one end of the sliding block is fixedly connected with the pressing plate.
Preferably, the connecting plate is internally provided with an adjusting hole, the adjusting hole is in threaded connection with an adjusting bolt, and one end of the adjusting bolt abuts against one end side wall of the pressing plate.
Preferably, the fixed plate is internally provided with a limiting hole, the limiting hole is in threaded connection with a locking bolt, one end of the locking bolt is in threaded connection with a threaded hole, and the threaded hole is formed in one end of the pressing plate.
Preferably, the both ends lateral wall of casing all communicates the intake pipe, just the internally mounted of intake pipe has the net that removes dust, the one end intercommunication of intake pipe is inside of dampproofing case.
Preferably, the movable pipe is cup jointed in the inside of fixed pipe, just the inside of movable pipe is fixed connection filter screen, active carbon adsorption net and ventilative sponge in proper order, the one end outside of the dampproofing case of one end intercommunication of movable pipe.
Preferably, the top of the movable groove is slidably connected with an iron core seat, an iron core is installed at the top of the iron core seat, through holes are formed in the two ends of the iron core, and the two ends of the iron core are located between the pressing plate and the fixing plate.
The invention has the beneficial effects that:
1. drive the driving gear through the motor and rotate, the driving gear drives the drive gear rotation that the meshing is connected, drive gear drives the screw rod and rotates at fixed frame inside, and two movable blocks that the screw rod drove threaded connection are close to each other, and the movable block drives the limiting plate and slides along the movable groove, and two limiting plates are fixed iron core seat clamp, easy to assemble and fixed, convenient to detach and maintenance.
2. The iron core through iron core seat top is located between fixed plate and the clamp plate, through rotating adjusting bolt, adjusting bolt and regulation hole threaded connection, adjusting bolt's one end promotes the clamp plate and slides through slider and spout, the one end of clamp plate drives the one end of iron core and supports tightly between the fixed plate, through the spacing hole of locking bolt threaded connection, the through-hole of iron core one end is run through to the one end of locking bolt, the one end of locking bolt and the screw hole threaded connection of clamp plate one end, thereby with the rigidity of iron core, convenient dismantlement and change.
3. Through cup jointing the movable tube with the fixed tube, open radiator fan through external switch, radiator fan inhales the air through the intake pipe, carry out prefilter with the dust through the dust removal net, refrigerate the air through the semiconductor refrigeration piece, blow to the filter screen through the air after radiator fan will refrigerate, active carbon adsorbs net and ventilative sponge, carry out further interception through the filter screen to the dust in the air, adsorb net and ventilative sponge through the active carbon, intercept steam and the dust in the air, blow to the casing inside through the movable tube dry air after will refrigerating, thereby carry out rapid cooling to the casing inside, improve the inside dampproofing ability of casing, and then be convenient for the heat dissipation, dampproofing effectually, the difficult short circuit that takes place.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the positions of the threaded holes, the adjustment holes, the locking bolts, the sliding grooves and the sliding blocks of the present invention;
fig. 4 is a schematic view showing the internal structure of the moisture-proof box of the present invention.
In the figure: 1. the shell, 2, the mounting panel, 3, the mount pad, 4, the motor, 5, the connecting seat, 6, drive gear, 7, the driving gear, 8, the screw rod, 9, the movable block, 10, the bracing piece, 11, the activity groove, 12, the iron core seat, 13, fixed frame, 14, the limiting plate, 15, spacing hole, 16, the fixed plate, 17, the heating panel, 18, the iron core, 19, dampproofing case, 20, locking bolt, 21, the dust removal net, 22, the intake pipe, 23, the curb plate, 24, the spout, 25, the slider, 26, the screw hole, 27, the regulation hole, 28, the connecting plate, 29, adjusting bolt, 30, the semiconductor refrigeration piece, 31, radiator fan, 32, the filter screen, 33, the active carbon adsorption net, 34, ventilative sponge, 35, the activity pipe, 36, the fixed pipe, 37, the clamp plate.
Detailed Description
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.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1-4, a distribution transformer with an iron core replacement function includes a housing 1, a fixing device, an adjusting device, and a moisture-proof heat sink;
the fixing device comprises a fixing frame 13 arranged inside the shell 1, a supporting rod 10 is fixedly connected inside the fixing frame 13, the top end of the supporting rod 10 is fixedly connected with a connecting seat 5, a motor 4 is arranged at the top of the connecting seat 5, the output end of the motor 4 is sleeved with a driving gear 7, a screw 8 is rotatably connected inside the fixing frame 13 through a bearing, two ends of the screw 8 are in threaded connection with movable blocks 9, the top end of each movable block 9 is fixedly connected with a limiting plate 14, the iron core seat 12 is convenient to install and fix, and maintenance and replacement are convenient;
the adjusting device comprises a fixing plate 16 fixedly connected to the top end of the limiting plate 14, one end of the fixing plate 16 is fixedly connected with a side plate 23, and one end of the side plate 23 is fixedly connected with a connecting plate 28, so that the iron core 18 is conveniently fixed and is convenient to mount and dismount;
dampproofing heat abstractor includes dampproofing case 19 of fixed connection on the inside top of casing 1, semiconductor refrigeration piece 30 is installed to the one end lateral wall of dampproofing case 19, the internally mounted of dampproofing case 19 has radiator fan 31, the fixed pipe of inside fixed connection 36 of dampproofing case 19, the equal fixed connection heating panel 17 of both ends lateral wall of casing 1, convenient heat dissipation and dampproofing, it is effectual to prevent damp, is difficult for taking place the short circuit.
The mounting plates 2 are mounted at the top end and the bottom end of the shell 1, and one end of each mounting plate 2 is fixedly connected with the corresponding mounting seat 3, so that the structure is more reasonable, and the mounting is convenient; the top of the fixed frame 13 is provided with a movable groove 11, and the inside of the movable groove 11 is connected with a limiting plate 14 in a sliding manner, so that the structure is more reasonable and the connection is convenient; one end of the screw 8 is sleeved with a transmission gear 6, and the transmission gear 6 is meshed with a driving gear 7, so that the structure is more reasonable and the connection is convenient; a sliding groove 24 is formed in one end of the side plate 23, the sliding block 25 is connected to the inside of the sliding groove 24 in a sliding mode, and one end of the sliding block 25 is fixedly connected with a pressing plate 37, so that the structure is more reasonable and the connection is convenient; an adjusting hole 27 is formed in the connecting plate 28, an adjusting bolt 29 is in threaded connection with the inside of the adjusting hole 27, and one end of the adjusting bolt 29 abuts against the side wall of one end of the pressing plate 37, so that the structure is more reasonable, and the connection is convenient; a limiting hole 15 is formed in the fixing plate 16, a locking bolt 20 is in threaded connection with the limiting hole 15, one end of the locking bolt 20 is in threaded connection with a threaded hole 26, and the threaded hole 26 is formed in one end of a pressing plate 37, so that the structure is more reasonable, and the connection is convenient; the outer side walls of two ends of the shell 1 are both communicated with an air inlet pipe 22, a dust removal net 21 is arranged inside the air inlet pipe 22, one end of the air inlet pipe 22 is communicated with the inside of the moisture-proof box 19, the structure is more reasonable, and the connection is convenient; the movable pipe 35 is sleeved inside the fixed pipe 36, the filter screen 32, the activated carbon adsorption net 33 and the breathable sponge 34 are fixedly connected inside the movable pipe 35 in sequence, one end of the movable pipe 35 is communicated with the outer side of one end of the moisture-proof box 19, the structure is more reasonable, and the connection is convenient; the top of the movable groove 11 is slidably connected with the iron core base 12, the iron core 18 is installed at the top of the iron core base 12, through holes are formed in the two ends of the iron core 18, and the two ends of the iron core 18 are located between the pressing plate 37 and the fixing plate 16, so that the structure is more reasonable, and the connection is convenient.
When the invention is used, firstly, all electrical components in the device are externally connected with a control switch and a power supply, the position of the device is fixed through a mounting plate 2 and a mounting seat 3, an iron core 18 to be mounted is connected in a sliding way in a movable groove 11 through an iron core seat 12, a motor 4 is switched on through the external switch, the motor 4 drives a driving gear 7 to rotate, the driving gear 7 drives a transmission gear 6 which is in meshing connection to rotate, the transmission gear 6 drives a screw 8 to rotate in a fixed frame 13, the screw 8 drives two movable blocks 9 which are in threaded connection to mutually approach, the movable blocks 9 drive limiting plates 14 to slide along the movable groove 11, the two limiting plates 14 clamp and fix the iron core seat 12, the iron core 18 at the top end of the iron core seat 12 is positioned between a fixed plate 16 and a pressing plate 37, through rotating the adjusting bolt 29, the adjusting bolt 29 is in threaded connection with an adjusting hole 27, one end of the, one end of the pressing plate 37 drives one end of the iron core 18 to be tightly abutted between the fixing plates 16, the locking bolt 20 is in threaded connection with the limiting hole 15, one end of the locking bolt 20 penetrates through a through hole at one end of the iron core 18, one end of the locking bolt 20 is in threaded connection with the threaded hole 26 at one end of the pressing plate 37, so that the position of the iron core 18 is fixed, the iron core is convenient to detach and replace, then the movable pipe 35 is sleeved with the fixed pipe 36, the heat dissipation fan 31 is opened through an external switch, the heat dissipation fan 31 sucks air through the air inlet pipe 22, dust is primarily filtered through the dust removal net 21, the air is refrigerated through the semiconductor refrigeration sheet 30, the refrigerated air is blown to the filter screen 32, the active carbon adsorption net 33 and the breathable sponge 34 through the heat dissipation fan 31, the dust in the air is further intercepted through the filter screen 32, the active carbon adsorption net 33 and the breathable sponge 34 are used for intercepting water vapor, dry air after will refrigerating is blown to inside the casing 1 through the movable tube 35 to carry out rapid cooling to the casing 1 inside, improve the inside dampproofing ability of casing 1, and then be convenient for dispel the heat, dampproofing effectual, difficult emergence short circuit.
The heat dissipation fan 31 is a 12038 type fan sold by the jia sinda electronics technology limited of Dongguan city, and its related power supply and circuit.
It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
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 (10)
1. The utility model provides a distribution transformer with function is changed to iron core which characterized in that: comprises a shell (1), a fixing device, an adjusting device and a damp-proof heat dissipation device;
the fixing device comprises a fixing frame (13) arranged inside a shell (1), the inside of the fixing frame (13) is fixedly connected with a supporting rod (10), the top end of the supporting rod (10) is fixedly connected with a connecting seat (5), the top of the connecting seat (5) is provided with a motor (4), the output end of the motor (4) is sleeved with a driving gear (7), the inside of the fixing frame (13) is rotatably connected with a screw rod (8) through a bearing, two ends of the screw rod (8) are in threaded connection with movable blocks (9), and the top end of each movable block (9) is fixedly connected with a limiting plate (14);
the adjusting device comprises a fixing plate (16) fixedly connected to the top end of the limiting plate (14), one end of the fixing plate (16) is fixedly connected with a side plate (23), and one end of the side plate (23) is fixedly connected with a connecting plate (28);
dampproofing heat abstractor includes dampproofing case (19) on the inside top of casing (1) of fixed connection, semiconductor refrigeration piece (30) are installed to the one end lateral wall of dampproofing case (19), the internally mounted of dampproofing case (19) has radiator fan (31), the fixed pipe of inside fixed connection (36) of dampproofing case (19), the equal fixed connection heating panel (17) of both ends lateral wall of casing (1).
2. A distribution transformer with core replacement as claimed in claim 1, wherein: mounting panel (2) are all installed to the top and the bottom of casing (1), just one end fixed connection mount pad (3) of mounting panel (2).
3. A distribution transformer with core replacement as claimed in claim 1, wherein: a movable groove (11) is formed in the top of the fixed frame (13), and a limiting plate (14) is connected to the inside of the movable groove (11) in a sliding mode.
4. A distribution transformer with core replacement as claimed in claim 1, wherein: one end of the screw rod (8) is sleeved with a transmission gear (6), and the transmission gear (6) is meshed with the driving gear (7).
5. A distribution transformer with core replacement as claimed in claim 1, wherein: a sliding groove (24) is formed in one end of the side plate (23), a sliding block (25) is connected to the inside of the sliding groove (24) in a sliding mode, and one end of the sliding block (25) is fixedly connected with a pressing plate (37).
6. A distribution transformer with core replacement as claimed in claim 1, wherein: an adjusting hole (27) is formed in the connecting plate (28), an adjusting bolt (29) is connected with the inner portion of the adjusting hole (27) in a threaded mode, and one end of the adjusting bolt (29) abuts against one end of the side wall of the pressing plate (37).
7. A distribution transformer with core replacement as claimed in claim 1, wherein: the inside of fixed plate (16) is opened there is spacing hole (15), just the inside threaded connection locking bolt (20) in spacing hole (15), the one end threaded connection screw hole (26) of locking bolt (20), screw hole (26) are seted up inside the one end of clamp plate (37).
8. A distribution transformer with core replacement as claimed in claim 1, wherein: the both ends lateral wall of casing (1) all communicates intake pipe (22), just the internally mounted of intake pipe (22) has dust removal net (21), the inside of the dampproofing case (19) of one end intercommunication of intake pipe (22).
9. A distribution transformer with core replacement as claimed in claim 1, wherein: the inside of fixed pipe (36) is cup jointed movable pipe (35), just the inside of movable pipe (35) is fixed connection filter screen (32), active carbon adsorption net (33) and ventilative sponge (34) in proper order, the one end outside of the dampproofing case of one end intercommunication (19) of movable pipe (35).
10. A distribution transformer with core replacement as claimed in claim 1, wherein: the top of the movable groove (11) is connected with an iron core seat (12) in a sliding mode, an iron core (18) is installed at the top of the iron core seat (12), through holes are formed in the inner portions of two ends of the iron core (18), and two ends of the iron core (18) are located between the pressing plate (37) and the fixing plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027490.3A CN110729114A (en) | 2019-10-28 | 2019-10-28 | Distribution transformer with iron core replacement function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027490.3A CN110729114A (en) | 2019-10-28 | 2019-10-28 | Distribution transformer with iron core replacement function |
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| CN110729114A true CN110729114A (en) | 2020-01-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071591A (en) * | 2020-11-16 | 2020-12-11 | 汇网电气有限公司 | Oil-immersed transformer easy to overhaul |
| CN112351646A (en) * | 2020-10-27 | 2021-02-09 | 南京汇荣电气系统有限公司 | Network monitoring device with electric damp-proof function and use method thereof |
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| CN207883500U (en) * | 2018-03-19 | 2018-09-18 | 佛山市特宇电力设备有限公司 | A kind of transformer core die arrangement |
| CN208400707U (en) * | 2018-05-09 | 2019-01-18 | 东莞市晶都电子科技有限公司 | A kind of magnetic core clamping device |
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| CN208806120U (en) * | 2018-09-27 | 2019-04-30 | 江苏盛久变压器有限公司 | A kind of dry-type power transformer radiator |
| CN109461567A (en) * | 2018-12-15 | 2019-03-12 | 泰州市天力铁芯制造有限公司 | A kind of grade laminated transformer core folder |
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| CN112351646A (en) * | 2020-10-27 | 2021-02-09 | 南京汇荣电气系统有限公司 | Network monitoring device with electric damp-proof function and use method thereof |
| CN112351646B (en) * | 2020-10-27 | 2022-08-05 | 南京汇荣电气系统有限公司 | Network monitoring device with electric damp-proof function and use method thereof |
| CN112071591A (en) * | 2020-11-16 | 2020-12-11 | 汇网电气有限公司 | Oil-immersed transformer easy to overhaul |
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