CN112992478A - Sleeve pipe antifouling structure for oil-immersed transformer - Google Patents

Sleeve pipe antifouling structure for oil-immersed transformer Download PDF

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Publication number
CN112992478A
CN112992478A CN202110208388.4A CN202110208388A CN112992478A CN 112992478 A CN112992478 A CN 112992478A CN 202110208388 A CN202110208388 A CN 202110208388A CN 112992478 A CN112992478 A CN 112992478A
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CN
China
Prior art keywords
transmission
antifouling
group
driven
fixedly connected
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Pending
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CN202110208388.4A
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Chinese (zh)
Inventor
沙颖婕
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Individual
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Individual
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Priority to CN202110208388.4A priority Critical patent/CN112992478A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • H01F27/022Encapsulation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/324Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

Abstract

The invention discloses a bushing anti-fouling structure for an oil-immersed transformer, relates to the technical field of transformers, and solves the problems that when the bushing anti-fouling structure is used for performing anti-fouling protection on a bushing, the service condition of the bushing anti-fouling structure is single, and the height of the anti-fouling structure cannot be adjusted according to the field service condition of the bushing and the length of the bushing; a group of antifouling upper covers are connected above the antifouling base in a sliding manner; the left end and the right end of the inner side of the antifouling base are both connected with a group of transmission slide blocks in a sliding manner; a group of connecting transmission shafts is rotatably connected inside the left side of the antifouling base; a group of driving rotating shafts are rotatably connected inside the left end and the right end of the antifouling base; according to the transformer bushing anti-fouling device, the two groups of transmission sliding blocks move, the anti-fouling upper cover is pushed to move according to the inclined plane matching between the transmission sliding blocks and the anti-fouling upper cover, and the transformer bushing is prevented from dust, fouling and moisture through the anti-fouling upper cover.

Description

Sleeve pipe antifouling structure for oil-immersed transformer
Technical Field
The invention relates to the technical field of transformers, in particular to a bushing anti-fouling structure for an oil-immersed transformer.
Background
With the development of national industry, the electric load of enterprises is increased sharply, and the installation quantity of transformers is more and more; at present, both an inlet wire sleeve and an outlet wire sleeve of an oil-immersed transformer are exposed in the air, when the transformer is used in places with large dust, a large amount of dust is accumulated on the sleeve after the transformer is used for a period of time, so that the phenomenon of discharge flashover of the sleeve is caused, the service life of the transformer is shortened, particularly in the places containing conductive medium dust in the air of steel plants, coal mines and the like, if a large amount of conductive medium dust is accumulated on the sleeve, direct discharge is caused due to insufficient ground insulation distance of the sleeve, serious economic losses are caused by burning down the transformer, and the sleeve needs to be protected by an antifouling structure.
For example, application No.: 201110410385.5 the invention discloses a distribution transformer bushing, which comprises a bushing body, a pressing block is arranged on the bushing body, a rubber ring is arranged between the bushing body and the pressing block, and the bushing is characterized in that: the sleeve is characterized in that the sleeve body is made of insulating silicon rubber, a magnetoelectric inductor is embedded in the sleeve body, and a lead end of the magnetoelectric inductor is led out from the sleeve body.
Based on the above, when the existing antifouling structure of the casing pipe is used for antifouling protection of the casing pipe, the using condition of the antifouling structure of the casing pipe is single, the height of the antifouling structure cannot be adjusted according to the field using condition of the casing pipe and the length of the casing pipe, the transformer cannot be prevented from gathering dust, the maintenance cost of the transformer is high, and the operation is unsafe; therefore, the existing requirements are not met, and an anti-fouling structure based on a bushing for an oil-immersed transformer is provided for the requirement.
Disclosure of Invention
The invention aims to provide a bushing anti-fouling structure for an oil-immersed transformer, and the bushing anti-fouling structure is used for solving the problems that when the existing bushing anti-fouling structure proposed in the background art is used for performing anti-fouling protection on a bushing, the service condition of the bushing anti-fouling structure is single, the height of the anti-fouling structure cannot be adjusted according to the field service condition of the bushing and the length of the bushing, dust can not be accumulated in the transformer, the maintenance cost of the transformer is high, and the operation is unsafe.
In order to achieve the purpose, the invention provides the following technical scheme: a bushing anti-fouling structure for an oil-immersed transformer comprises a transformer; a sleeve is fixedly connected above the transformer; a group of antifouling bases is fixedly connected above the transformer; a group of antifouling upper covers are connected above the antifouling base in a sliding manner; the left end and the right end of the inner side of the antifouling base are both connected with a group of transmission slide blocks in a sliding manner; the left side of the antifouling base is fixedly connected with a group of driving motors; a group of connecting transmission shafts is rotatably connected inside the left side of the antifouling base; a group of driving rotating shafts are rotatably connected inside the left end and the right end of the antifouling base; a group of middle connecting shafts are rotatably connected to the inner part in front of the antifouling base; the inner part of the right side of the antifouling base is rotatably connected with a group of right side connecting shafts.
Preferably, the driving motor further comprises a transmission worm, the driving motor is fixedly connected with a group of transmission worms, the connecting transmission shaft further comprises a driven worm wheel, the connecting transmission shaft is fixedly connected with a group of driven worm wheels, and the transmission worm is meshed with the driven worm wheels to form a worm and gear transmission mechanism.
Preferably, the connecting transmission shaft further comprises a first transmission chain wheel, the connecting transmission shaft is fixedly connected with a group of first transmission chain wheels, the intermediate connecting shaft further comprises a first driven chain wheel, the left side of the intermediate connecting shaft is fixedly connected with a group of first driven chain wheels, and the first transmission chain wheel and the first driven chain wheels form a belt transmission mechanism.
Preferably, the middle connecting shaft further comprises a second driving chain wheel, a group of second driving chain wheels is fixedly connected to the right side of the middle connecting shaft, the right side connecting shaft further comprises a second driven chain wheel, a group of second driven chain wheels is fixedly connected to the right side of the right side connecting shaft, and the second driving chain wheels and the second driven chain wheels form a belt driving mechanism.
Preferably, the connecting transmission shaft further comprises a left side transmission bevel gear, a group of left side transmission bevel gears are fixedly connected to the right side of the connecting transmission shaft, the driving rotating shaft further comprises driven bevel gears, a group of driven bevel gears are fixedly connected to the lower portions of the left and right groups of driving rotating shafts, the right side connecting shaft further comprises a right side transmission bevel gear, a group of right side transmission bevel gears are fixedly connected to the left side of the right side connecting shaft, and the left side transmission bevel gears are meshed with the driven bevel gears and the right side transmission bevel gears to form a gear.
Preferably, the transmission slide block further comprises a driven rack, a group of driven racks is fixedly connected below the transmission slide block, the driving rotating shaft further comprises a transmission gear, a group of transmission gears is fixedly connected above the driving rotating shaft, and the driven racks are meshed with the transmission gears to form a gear rack transmission mechanism.
Preferably, the left side and the right side below the antifouling upper cover are both provided with an inclined plane, one side of each group of transmission sliding blocks, which is close to the antifouling upper cover, is provided with a group of inclined planes, and the transmission sliding blocks and the antifouling upper cover form inclined plane connection.
Preferably, antifouling upper cover is still including the lug, and both ends are equal fixedly connected with lug around the antifouling upper cover, and antifouling base is still including the recess, and antifouling base inboard is seted up flutedly, lug and recess sliding connection.
Compared with the prior art, the invention has the beneficial effects that:
the invention drives a driving motor to rotate, the driving motor is meshed with a driven worm gear through a driving worm to form a worm gear transmission mechanism, a connecting transmission shaft is driven to rotate, the connecting transmission shaft forms belt transmission through a first transmission chain wheel and a first driven chain wheel, an intermediate connecting shaft is driven to rotate, the intermediate connecting shaft forms the belt transmission mechanism through a second transmission chain wheel and a second driven chain wheel, a right connecting shaft is driven to rotate, the connecting transmission shaft and the right connecting shaft are respectively meshed with a driven bevel gear and a right transmission bevel gear through a left transmission bevel gear to form a gear transmission mechanism, a left driving rotating shaft and a right driving rotating shaft are driven to rotate, and the driving rotating shafts drive two groups of driving sliding blocks to synchronously move inwards through a gear rack transmission mechanism formed by meshing a driven rack.
Two sets of transmission sliders constitute the inclined plane between through transmission slider and the antifouling upper cover and be connected, promote antifouling upper cover and upwards move, antifouling upper cover passes through lug and recess sliding connection, realizes the direction removal of antifouling upper cover, carries out antifouling, dampproofing protection through antifouling base and antifouling upper cover to the sleeve pipe of transformer top, to sum up, through the removal of two sets of transmission sliders, according to the inclined plane cooperation between transmission slider and the antifouling upper cover, promote antifouling upper cover and remove, through antifouling upper cover to transformer sleeve pipe dustproof, antifouling and dampproofing, avoid the transformer to gather the dust, reduce the maintenance cost of transformer.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view of the installation structure of the transmission slide block and the antifouling upper cover of the invention;
FIG. 4 is a schematic axial side view of the antifouling upper cover according to the present invention;
FIG. 5 is a schematic axial side view of the antifouling base according to the present invention;
FIG. 6 is a schematic view of the internal structure of the anti-fouling base of the present invention;
FIG. 7 is a schematic view of the installation structure of the transmission connecting shaft and the driving rotating shaft of the present invention;
FIG. 8 is a schematic view of the right connecting shaft and driving shaft mounting structure of the present invention;
in the figure: 1. a transformer; 2. a sleeve; 3. an antifouling upper cover; 301. a bump; 4. an antifouling base; 401. a groove; 5. a transmission slide block; 501. a driven rack; 6. a drive motor; 601. a drive worm; 7. connecting a transmission shaft; 701. a driven worm gear; 702. a first drive sprocket; 703. a left side drive bevel gear; 8. driving the rotating shaft; 801. a transmission gear; 802. a driven bevel gear; 9. a middle connecting shaft; 901. a first driven sprocket; 902. a second drive sprocket; 10. a right connecting shaft; 1001. a second driven sprocket; 1002. the right side drives a bevel gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 8, an embodiment of the present invention includes: a bushing anti-fouling structure for an oil-immersed transformer comprises a transformer 1; a sleeve 2 is fixedly connected above the transformer 1; a group of antifouling bases 4 are fixedly connected above the transformer 1; a group of antifouling upper covers 3 are connected above the antifouling base 4 in a sliding way; the left end and the right end of the inner side of the antifouling base 4 are both connected with a group of transmission slide blocks 5 in a sliding manner; the left side of the antifouling base 4 is fixedly connected with a group of driving motors 6; a group of connecting transmission shafts 7 is rotatably connected inside the left side of the antifouling base 4; a group of driving rotating shafts 8 are rotatably connected inside the left end and the right end of the antifouling base 4; a group of middle connecting shafts 9 are rotatably connected inside the front part of the antifouling base 4; the inner part of the right side of the antifouling base 4 is rotatably connected with a group of right connecting shafts 10.
Further, the driving motor 6 further comprises a driving worm 601, the driving motor 6 is fixedly connected with a group of driving worms 601, the connecting transmission shaft 7 further comprises a driven worm wheel 701, the connecting transmission shaft 7 is fixedly connected with a group of driven worm wheels 701, the driving worm 601 is meshed with the driven worm wheels 701 to form a worm and worm transmission mechanism, and when the driving motor 6 rotates, the driving worm 601 is meshed with the driven worm wheels 701 to form the worm and worm transmission mechanism to drive the connecting transmission shaft 7 to rotate.
Further, the connecting transmission shaft 7 further comprises a first transmission chain wheel 702, the connecting transmission shaft 7 is fixedly connected with a group of first transmission chain wheels 702, the middle connecting shaft 9 further comprises a first driven chain wheel 901, the left side of the middle connecting shaft 9 is fixedly connected with a group of first driven chain wheels 901, the first transmission chain wheels 702 and the first driven chain wheels 901 form a belt transmission mechanism, and when the connecting transmission shaft 7 rotates in use, the first transmission chain wheels 702 and the first driven chain wheels 901 form belt transmission to drive the middle connecting shaft 9 to rotate.
Further, middle connecting axle 9 still includes second drive sprocket 902, middle connecting axle 9 right side fixedly connected with a set of second drive sprocket 902, right side connecting axle 10 still includes second driven sprocket 1001, right side connecting axle 10 right side fixedly connected with a set of second driven sprocket 1001, second drive sprocket 902 and second driven sprocket 1001 constitute belt drive mechanism, in use, middle connecting axle 9 rotates, constitutes belt drive mechanism through second drive sprocket 902 and second driven sprocket 1001, drive right side connecting axle 10 and rotate.
Further, connect transmission shaft 7 still including left side transmission bevel gear 703, connect 7 right sides of transmission shaft fixedly connected with a set of left side transmission bevel gear 703, drive pivot 8 is still including driven bevel gear 802, the equal fixedly connected with a set of driven bevel gear 802 in two sets of drive pivot 8 below about, right side connecting axle 10 is still including right side transmission bevel gear 1002, right side connecting axle 10 left side fixedly connected with a set of right side transmission bevel gear 1002, left side transmission bevel gear 703 meshes with driven bevel gear 802 and right side transmission bevel gear 1002 respectively and constitutes gear drive mechanism, in use, when connecting transmission shaft 7 and right side connecting axle 10 and rotating, constitute gear drive mechanism through left side transmission bevel gear 703 mesh with driven bevel gear 802 and right side transmission bevel gear 1002 respectively, it rotates to drive two sets of drive pivot 8 about.
Further, the transmission slide block 5 further comprises a driven rack 501, a group of driven racks 501 is fixedly connected to the lower portion of the transmission slide block 5, the driving rotating shaft 8 further comprises a transmission gear 801, a group of transmission gears 801 is fixedly connected to the upper portion of the driving rotating shaft 8, the driven racks 501 are meshed with the transmission gears 801 to form a gear and rack transmission mechanism, and when the driving rotating shaft 8 rotates in use, the driven racks 501 are meshed with the transmission gears 801 to form the gear and rack transmission mechanism to drive the transmission slide block 5 to move.
Further, the inclined plane has all been seted up to the 3 below left and right sides of antifouling upper cover, and every group transmission slider 5 has seted up a set of inclined plane near 3 one side of antifouling upper cover, constitutes the inclined plane between transmission slider 5 and the antifouling upper cover 3 and is connected, and in use, when two sets of transmission sliders 5 removed, through constituting the inclined plane between transmission slider 5 and the antifouling upper cover 3 and being connected, promote antifouling upper cover 3 and upwards move.
Further, antifouling upper cover 3 is still including lug 301, the equal fixedly connected with lug 301 in both ends around antifouling upper cover 3, and antifouling base 4 is still including recess 401, and recess 401 has been seted up to antifouling base 4 inboard, lug 301 and recess 401 sliding connection, and in use, when antifouling upper cover 3 removed, through lug 301 and recess 401 sliding connection, the direction that realizes antifouling upper cover 3 removed.
The working principle is as follows: when the antifouling device is used, the height of the antifouling upper cover 3 is adjusted according to the using environment and the height of the sleeve 2, the driving motor 6 is rotated, the driving motor 6 is meshed with the driven worm wheel 701 through the driving worm 601 to form a worm gear transmission mechanism, the connecting transmission shaft 7 is driven to rotate, the connecting transmission shaft 7 forms belt transmission with the first driven sprocket 901 through the first transmission sprocket 702 to drive the intermediate connecting shaft 9 to rotate, the intermediate connecting shaft 9 forms belt transmission mechanism with the second driven sprocket 1001 through the second transmission sprocket 902 to drive the right connecting shaft 10 to rotate, the connecting transmission shaft 7 and the right connecting shaft 10 are respectively meshed with the driven bevel gear 802 and the right transmission bevel gear 1002 through the left transmission bevel gear 703 to form a gear transmission mechanism, the left and right groups of driving rotating shafts 8 are driven to rotate, and the driving rotating shafts 8 are meshed with the transmission gear 801 through the driven rack 501 to form, drive two sets of transmission sliders 5 and carry out synchronous reverse movement, two sets of transmission sliders 5 constitute the inclined plane through between transmission slider 5 and the antifouling upper cover 3 and are connected, promote antifouling upper cover 3 and upwards move, antifouling upper cover 3 passes through lug 301 and recess 401 sliding connection, realizes antifouling upper cover 3's direction and moves, carries out antifouling, dampproofing protection through antifouling base 4 and antifouling upper cover 3 to the sleeve pipe 2 of transformer 1 top.
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.

Claims (8)

1. The utility model provides a based on to antifouling structure of sleeve pipe of oil-immersed transformer which characterized in that: comprising a transformer (1); a sleeve (2) is fixedly connected above the transformer (1); a group of antifouling bases (4) are fixedly connected above the transformer (1); a group of antifouling upper covers (3) are connected above the antifouling base (4) in a sliding manner; the left end and the right end of the inner side of the antifouling base (4) are both connected with a group of transmission slide blocks (5) in a sliding manner; the left side of the antifouling base (4) is fixedly connected with a group of driving motors (6); a group of connecting transmission shafts (7) is rotatably connected inside the left side of the antifouling base (4); a group of driving rotating shafts (8) are rotatably connected inside the left end and the right end of the antifouling base (4); a group of middle connecting shafts (9) are rotatably connected inside the front part of the antifouling base (4); the inner part of the right side of the antifouling base (4) is rotatably connected with a group of right side connecting shafts (10).
2. The oil-filled transformer-based bushing anti-fouling structure according to claim 1, characterized in that: the driving motor (6) further comprises a transmission worm (601), the driving motor (6) is fixedly connected with a group of transmission worms (601), the connecting transmission shaft (7) further comprises a driven worm wheel (701), the connecting transmission shaft (7) is fixedly connected with a group of driven worm wheels (701), and the transmission worm (601) is meshed with the driven worm wheels (701) to form a worm and gear transmission mechanism.
3. The oil-filled transformer-based bushing anti-fouling structure according to claim 1, characterized in that: the connecting transmission shaft (7) further comprises a first transmission chain wheel (702), the connecting transmission shaft (7) is fixedly connected with a group of first transmission chain wheels (702), the middle connecting shaft (9) further comprises a first driven chain wheel (901), the left side of the middle connecting shaft (9) is fixedly connected with a group of first driven chain wheels (901), and the first transmission chain wheel (702) and the first driven chain wheels (901) form a belt transmission mechanism.
4. The oil-filled transformer-based bushing anti-fouling structure according to claim 1, characterized in that: middle connecting axle (9) are still including second drive sprocket (902), a set of second drive sprocket (902) of middle connecting axle (9) right side fixedly connected with, and right side connecting axle (10) are still including second driven sprocket (1001), a set of second driven sprocket (1001) of right side connecting axle (10) right side fixedly connected with, and second drive sprocket (902) and second driven sprocket (1001) constitute belt drive mechanism.
5. The oil-filled transformer-based bushing anti-fouling structure according to claim 1, characterized in that: connect transmission shaft (7) still including left side transmission bevel gear (703), connect transmission shaft (7) right side fixedly connected with a set of left side transmission bevel gear (703), drive pivot (8) are still including driven bevel gear (802), control equal fixedly connected with a set of driven bevel gear (802) in two sets of drive pivot (8) below, right side connecting axle (10) still is including right side transmission bevel gear (1002), a set of right side transmission bevel gear (1002) of right side connecting axle (10) left side fixedly connected with, left side transmission bevel gear (703) constitute gear drive with driven bevel gear (802) and right side transmission bevel gear (1002) meshing respectively.
6. The oil-filled transformer-based bushing anti-fouling structure according to claim 1, characterized in that: the transmission slide block (5) further comprises a driven rack (501), a group of driven racks (501) is fixedly connected to the lower portion of the transmission slide block (5), the driving rotating shaft (8) further comprises a transmission gear (801), a group of transmission gear (801) is fixedly connected to the upper portion of the driving rotating shaft (8), and the driven racks (501) are meshed with the transmission gear (801) to form a gear-rack transmission mechanism.
7. The oil-filled transformer-based bushing anti-fouling structure according to claim 1, characterized in that: inclined planes are arranged on the left side and the right side of the lower portion of the antifouling upper cover (3), a group of inclined planes are arranged on one side, close to the antifouling upper cover (3), of each group of transmission sliding blocks (5), and the transmission sliding blocks (5) are connected with the antifouling upper cover (3) in an inclined plane mode.
8. The oil-filled transformer-based bushing anti-fouling structure according to claim 1, characterized in that: antifouling upper cover (3) are still including lug (301), and equal fixedly connected with lug (301) in both ends around antifouling upper cover (3), antifouling base (4) are still including recess (401), and antifouling base (4) inboard is seted up recess (401), lug (301) and recess (401) sliding connection.
CN202110208388.4A 2021-02-24 2021-02-24 Sleeve pipe antifouling structure for oil-immersed transformer Pending CN112992478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110208388.4A CN112992478A (en) 2021-02-24 2021-02-24 Sleeve pipe antifouling structure for oil-immersed transformer

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Application Number Priority Date Filing Date Title
CN202110208388.4A CN112992478A (en) 2021-02-24 2021-02-24 Sleeve pipe antifouling structure for oil-immersed transformer

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CN112992478A true CN112992478A (en) 2021-06-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114242419A (en) * 2021-12-15 2022-03-25 王来军 Oil-immersed transformer insulation sleeve

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CN208400658U (en) * 2018-07-07 2019-01-18 深圳市深特变电气设备有限公司 A kind of intelligent Full-enclosed oil-immersed transformer
CN109887713A (en) * 2017-12-06 2019-06-14 江苏广特电气有限公司 A kind of easy-to-dismount transformer
CN209496682U (en) * 2019-04-29 2019-10-15 天津滨海舜天电气有限公司 A kind of oil-immersed transformer casing dirtproof cover being conveniently replaceable
CN110942887A (en) * 2019-10-10 2020-03-31 湖北工业大学 Oil-immersed transformer bushing protective cover
CN210489364U (en) * 2019-08-24 2020-05-08 云南达云电气设备有限公司 Oil-immersed transformer capable of monitoring cooling temperature
CN111456397A (en) * 2020-04-20 2020-07-28 周建平 Construction frame based on safe operation
CN111637352A (en) * 2020-06-10 2020-09-08 刘伦宇 Gearbox oil receiving device for automobile repair
CN212342415U (en) * 2020-07-29 2021-01-12 银马电气有限公司 Oil-immersed transformer
CN112209292A (en) * 2020-10-29 2021-01-12 德清世锦智能科技有限公司 Building site work piece lifting machinery device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109887713A (en) * 2017-12-06 2019-06-14 江苏广特电气有限公司 A kind of easy-to-dismount transformer
CN208400658U (en) * 2018-07-07 2019-01-18 深圳市深特变电气设备有限公司 A kind of intelligent Full-enclosed oil-immersed transformer
CN209496682U (en) * 2019-04-29 2019-10-15 天津滨海舜天电气有限公司 A kind of oil-immersed transformer casing dirtproof cover being conveniently replaceable
CN210489364U (en) * 2019-08-24 2020-05-08 云南达云电气设备有限公司 Oil-immersed transformer capable of monitoring cooling temperature
CN110942887A (en) * 2019-10-10 2020-03-31 湖北工业大学 Oil-immersed transformer bushing protective cover
CN111456397A (en) * 2020-04-20 2020-07-28 周建平 Construction frame based on safe operation
CN111637352A (en) * 2020-06-10 2020-09-08 刘伦宇 Gearbox oil receiving device for automobile repair
CN212342415U (en) * 2020-07-29 2021-01-12 银马电气有限公司 Oil-immersed transformer
CN112209292A (en) * 2020-10-29 2021-01-12 德清世锦智能科技有限公司 Building site work piece lifting machinery device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114242419A (en) * 2021-12-15 2022-03-25 王来军 Oil-immersed transformer insulation sleeve

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Application publication date: 20210618