CN213025724U - Low-loss oil-immersed transformer - Google Patents
Low-loss oil-immersed transformer Download PDFInfo
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- CN213025724U CN213025724U CN202021469610.3U CN202021469610U CN213025724U CN 213025724 U CN213025724 U CN 213025724U CN 202021469610 U CN202021469610 U CN 202021469610U CN 213025724 U CN213025724 U CN 213025724U
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Abstract
The utility model provides a low-loss oil-immersed transformer, which relates to the technical field of transformers and comprises a three-phase oil-immersed transformer body, an oil storage device, a transformer shell, a fastening structure, an iron core winding, a corrosion-resistant sealing cover, an explosion-proof device, a corrugated sheet, a heat dissipation device and a tapping switch; the fastening structure arranged in the utility model enables the fastening parts such as the height of the three-phase oil-immersed transformer body, the low-voltage lead wire and the like to be provided with the self-locking locknut, adopts a non-suspended core structure, can bear the jolt of transportation, and avoids the phenomena of collision of parts, damage deformation of the parts, opening of a welding port, crack and the like in the transportation process of consignment and construction; meanwhile, the corrugated sheet effectively prevents oxygen and moisture from entering the transformer to cause the reduction of the insulating property of the transformer, the overall structure is scientific in design, safe, efficient, simple, convenient, economical and practical, and the safe, efficient, simple, convenient and economical and practical online oil change function of the transformer is realized.
Description
Technical Field
The utility model relates to a transformer technical field especially relates to a low-loss oil-immersed transformer.
Background
The oil-immersed transformer is a structural type of the transformer, a coil of the oil-immersed transformer is soaked in insulating oil, and the insulating oil has the characteristics of high insulating strength, large specific heat and good heat-conducting property and can play good insulating, heat-dissipating and arc-extinguishing roles. Due to the long running time of the transformer, the transformer oil is gradually aged and deteriorated under the action of long-term working voltage, operation overvoltage and lightning overvoltage, and the oil needs to be changed after the equipment is overhauled.
The on-line oil change scheme in the prior art is characterized in that an oil change vehicle is used for changing oil of a running transformer, wherein the oil change vehicle is connected with the lower end of an oil conservator of the transformer through a communicating pipe and is filled with new oil from the lower end, the oil change vehicle is connected with a sampling valve at the bottom of the transformer and is used for discharging old oil from the lower end, and the oil change process can be automatically changed by controlling the operation of an oil pump through a computer.
However, the main disadvantage of the prior art is that the new oil and the old oil are mixed during oil change, and the concentration of impurities such as fiber, acid and carbon particles contained in the old oil is higher than that of the new oil, and the new oil is polluted by the old oil due to diffusion movement, so that the significance of oil change is lost, and therefore, the technical problem to be solved by those skilled in the art is to provide a low-loss oil-immersed transformer.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a low-loss oil-immersed transformer to solve the unable safe high efficiency of current transformer, simple and convenient and economical and practical's the problem of realizing changing oil on line.
Based on the above-mentioned purpose, the utility model provides a low-loss oil-immersed transformer, include:
a three-phase oil-immersed transformer body; an oil storage device is arranged on the three-phase oil-immersed transformer body;
a transformer shell is arranged above the oil storage device, and the upper surface of the oil storage device is fixedly connected with the bottom of the transformer shell;
a fastening structure is arranged on one side of the outer wall of the front side of the transformer shell; the lower end of the fastening structure is connected with the upper surface of the three-phase oil-immersed transformer body, and the upper end of the fastening structure is connected with the top of the transformer shell and used for fixing the transformer shell;
an iron core winding box is arranged at the upper end of the transformer shell, an iron core winding is arranged in the iron core winding box, a corrosion-resistant sealing cover is fixedly installed above the iron core winding box, and an explosion-proof device is arranged above the corrosion-resistant sealing cover;
the other side of the outer wall of the front side of the transformer shell is provided with a corrugated sheet, and the corrugated sheet is positioned below the explosion-proof device;
a heat dissipation device is arranged on the outer wall of one side of the transformer shell; the top end of the heat dissipation device is connected with the corrosion-resistant sealing cover, and the outer wall of the side face of the heat dissipation device is provided with the tapping switch device.
Preferably, the corrugated sheets include three corrugated sheets, and each of the three corrugated sheets has the same structure and is arranged in parallel with each other.
Preferably, the length of each corrugated sheet is less than the height of the transformer shell.
Preferably, the corrugated sheets are parallel to the height direction of the transformer housing.
Preferably, the outer wall of the transformer shell is fixedly connected with a data acquisition device, and the data acquisition device is positioned at the right end of the fastening structure and used for acquiring data of the transformer.
Preferably, the explosion-proof device is arranged above the corrosion-resistant sealing cover in parallel.
Preferably, the length direction of the fastening structure is parallel to the height direction of the transformer housing.
Preferably, the tap changer arrangement comprises four tap changers, each tap changer being of identical construction.
Preferably, the bottom of the three-phase oil-immersed transformer body is fixedly connected with a foldable buffer support.
Preferably, the foldable buffer support comprises two buffer supports, and the two buffer supports are respectively connected to two sides of the bottom of the three-phase oil-immersed transformer body.
From the above, the utility model provides a low-loss oil-immersed transformer, including three-phase oil-immersed transformer body, set up the oil storage device on three-phase oil-immersed transformer body, connect the transformer shell on the oil storage device, set up fastening structure on the outer wall of transformer shell and be used for fixed transformer shell, set gradually iron core winding, corrosion-resistant sealed lid and explosion-proof equipment above the transformer shell, set up corrugated sheet and heat abstractor in the outer wall outside the transformer simultaneously, set up tapping switch in the outside of heat abstractor; the fastening structure arranged in the utility model enables the fastening parts such as the height of the three-phase oil-immersed transformer body, the low-voltage lead wire and the like to be provided with the self-locking locknut, adopts a non-suspended core structure, can bear the jolt of transportation, and avoids the phenomena of collision of parts, damage deformation of the parts, opening of a welding port, crack and the like in the transportation process of consignment and construction; meanwhile, the corrugated sheet has a breathing function to compensate the volume change of the transformer oil caused by temperature change, so that the transformer oil is isolated from the outside, the reduction of the insulation performance of the transformer caused by the entering of oxygen and moisture is effectively prevented, the whole structure design is scientific, the safety and the high efficiency are realized, the operation is simple and convenient, the operation is economical and practical, and the function of online oil change can be realized.
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, 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 creative efforts.
Fig. 1 is a schematic front view of a low-loss oil-immersed transformer according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a right-view structure of a low-loss oil-immersed transformer according to an embodiment of the present invention;
in the figure:
1. a three-phase oil-immersed transformer body; 2. an oil storage device; 3. a transformer housing; 4. a fastening structure; 5. a data acquisition device; 6. an iron core winding; 7. an explosion-proof device; 8. a corrugated sheet; 9. a heat sink; 10. a corrosion-resistant sealing cover; 11. a tap changer device; 12. the buffer support can be folded.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the ordinary meaning as understood by those having ordinary skill in the art to which the present disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Fig. 1 is a schematic front view of a low-loss oil-immersed transformer according to an embodiment of the present invention; fig. 2 is a schematic diagram of a right-view structure of a low-loss oil-immersed transformer according to an embodiment of the present invention; the embodiment of the utility model provides a low-loss oil-immersed transformer, include:
a three-phase oil-immersed transformer body 1; an oil storage device 2 is installed on the three-phase oil-immersed transformer body 1.
And a transformer shell 3 is arranged above the oil storage device 2, and the upper surface of the oil storage device 2 is fixedly connected with the bottom of the transformer shell 3.
A fastening structure 4 is arranged on one side of the outer wall of the front side of the transformer shell 3; the lower end of the fastening structure 4 is connected with the upper surface of the three-phase oil-immersed transformer body 1, and the upper end of the fastening structure 4 is connected with the top of the transformer shell 3 and used for fixing the transformer shell 3.
An iron core winding box is arranged at the upper end of the transformer shell 3, an iron core winding 6 is arranged inside the iron core winding box, a corrosion-resistant sealing cover 10 is fixedly installed above the iron core winding box, and an explosion-proof device 7 is arranged above the corrosion-resistant sealing cover 10.
And a corrugated sheet 8 is arranged on the other side of the outer wall of the front side of the transformer housing 3, and the corrugated sheet 8 is positioned below the explosion-proof device 7.
A heat dissipation device 9 is arranged on the outer wall of one side of the transformer shell 3; the top end of the heat dissipation device 9 is connected with a corrosion-resistant sealing cover 10, and a tapping switch device 11 is installed on the outer wall of the side face of the heat dissipation device 9.
The utility model provides a low-loss oil-immersed transformer, including three-phase oil-immersed transformer body 1, set up oil storage device 2 on three-phase oil-immersed transformer body 1, connect transformer shell 3 on oil storage device 2, set up fastening structure 4 in the outer wall of transformer shell 3 and be used for fixed transformer shell 3, set gradually iron core winding 6, corrosion-resistant sealed lid 10 and explosion-proof equipment 7 above transformer shell 3, set up corrugated sheet 8 and heat abstractor 9 in the outer wall in the transformer outside simultaneously, set up tapping switch in the outside of heat abstractor 9; the fastening structure 4 arranged in the utility model enables the fastening parts of the three-phase oil-immersed transformer body 1, such as the height direction, the low-voltage lead wire and the like, to be provided with the self-locking locknut, adopts a non-suspended core structure, can bear the jolt of transportation, and avoids the collision of parts in the consignment and construction transportation processes, which causes the phenomena of collision deformation of the parts, opening welding of a welding opening, crack and the like; simultaneously corrugated sheet 8 has the volume change that the compensation arouses transformer oil because of temperature variation, makes transformer oil keep apart with external, has prevented effectively that the entering of oxygen, moisture from resulting in the decline of transformer insulating properties, and overall structure design science, safe high efficiency, simple and convenient, economical and practical can realize the function of changing oil on line.
The embodiment of the utility model provides a low-loss oil-immersed transformer is still provided, include:
a three-phase oil-immersed transformer body 1; an oil storage device 2 is installed on the three-phase oil-immersed transformer body 1.
And a transformer shell 3 is arranged above the oil storage device 2, and the upper surface of the oil storage device 2 is fixedly connected with the bottom of the transformer shell 3.
A fastening structure 4 is arranged on one side of the outer wall of the front side of the transformer shell 3; the lower end of the fastening structure 4 is connected with the upper surface of the three-phase oil-immersed transformer body 1, and the upper end of the fastening structure 4 is connected with the top of the transformer shell 3 and used for fixing the transformer shell 3.
An iron core winding box is arranged at the upper end of the transformer shell 3, an iron core winding 6 is arranged inside the iron core winding box, a corrosion-resistant sealing cover 10 is fixedly installed above the iron core winding box, and an explosion-proof device 7 is arranged above the corrosion-resistant sealing cover 10.
And a corrugated sheet 8 is arranged on the other side of the outer wall of the front side of the transformer housing 3, and the corrugated sheet 8 is positioned below the explosion-proof device 7.
A heat dissipation device 9 is arranged on the outer wall of one side of the transformer shell 3; the top end of the heat dissipation device 9 is connected with a corrosion-resistant sealing cover 10, and a tapping switch device 11 is installed on the outer wall of the side face of the heat dissipation device 9.
The corrugated sheets 8 comprise three corrugated sheets, and each corrugated sheet 8 has the same structure and is arranged in parallel.
Wherein the length of each corrugated sheet 8 is smaller than the height of the transformer housing 3.
Wherein the corrugated sheets 8 are all parallel to the height direction of the transformer housing 3.
The outer wall of the transformer housing 3 is fixedly connected with a data acquisition device 5, and the data acquisition device 5 is located at the right end of the fastening structure 4 and used for acquiring data of the transformer.
Wherein, the explosion-proof device 7 is arranged above the corrosion-resistant sealing cover 10 in parallel.
Wherein the length direction of the fastening structure 4 is parallel to the height direction of the transformer housing 3.
Wherein the tap changer 11 comprises four tap changers, each having the same configuration.
And a foldable buffer bracket 12 is fixedly connected to the bottom of the three-phase oil-immersed transformer body 1.
The foldable buffer supports 12 comprise two buffer supports, and the two buffer supports are respectively connected to two sides of the bottom of the three-phase oil-immersed transformer body 1.
The utility model provides a low-loss oil-immersed transformer, including three-phase oil-immersed transformer body 1, set up oil storage device 2 on three-phase oil-immersed transformer body 1, connect transformer shell 3 on oil storage device 2, set up fastening structure 4 in the outer wall of transformer shell 3 and be used for fixed transformer shell 3, set gradually iron core winding 6, corrosion-resistant sealed lid 10 and explosion-proof equipment 7 above transformer shell 3, set up corrugated sheet 8 and heat abstractor 9 in the outer wall in the transformer outside simultaneously, set up tapping switch in the outside of heat abstractor 9; the fastening structure 4 arranged in the utility model enables the fastening parts of the three-phase oil-immersed transformer body 1, such as the height direction, the low-voltage lead wire and the like, to be provided with the self-locking locknut, adopts a non-suspended core structure, can bear the jolt of transportation, and avoids the collision of parts in the consignment and construction transportation processes, which causes the phenomena of collision deformation of the parts, opening welding of a welding opening, crack and the like; simultaneously corrugated sheet 8 has the volume change that the compensation arouses transformer oil because of temperature variation, makes transformer oil keep apart with external, has prevented effectively that the entering of oxygen, moisture from resulting in the decline of transformer insulating properties, and overall structure design science, safe high efficiency, simple and convenient, economical and practical can realize the function of changing oil on line.
The utility model provides a low-loss oil-immersed transformer can wide application in places such as high-rise building, commercial center, station, airport, factory and mining enterprise and hospital, and specially adapted is inflammable and explosive etc. and prevents fires the place that requires height and the environment is abominable.
The utility model provides a fastening structure 4 and ripple piece 8 are installed to low-loss oil-immersed transformer, fastening structure 4 makes three-phase oil-immersed transformer body 1's direction of height, fastening parts such as low pressure lead wire all have auto-lock locknut, adopt not hanging core structure, can bear jolting of transportation, zero part bumps appear in avoiding consignment and construction transportation, cause the part to bump the deformation, the weld opening welds, phenomenons such as crackle appear, ripple piece 8 has the volume change that respiratory function comes the compensation to arouse transformer oil because of temperature variation, because ripple piece 8 has replaced the oil conservator, make transformer oil keep apart with the external world, just so effectively prevented oxygen, the entering of moisture leads to the decline of insulating properties, overall structure design science, safety and high efficiency, and simplicity and convenience, economy and practicality, can realize changing oil on line. In the transformer, the insulating film is formed on at least one surface of the amorphous thin strip, and is formed on at least one of the amorphous thin strips of the plurality of iron core members. Performing vapor deposition treatment on the surface of an amorphous thin strip which is an iron core raw material of the amorphous iron core transformer to form an insulating film, wherein the insulating film is formed to have a thickness of about 1 mm; according to such a configuration, it is possible to suppress an increase in eddy current loss occurring when processing from a raw material to a transformer, and to reduce no-load loss of the transformer. The mode of combining active cooling and natural cooling is adopted, wherein the active cooling is to pump out hot oil on the upper layer of the transformer, and the hot oil is cooled by the heat dissipation device on the outer side, then flows back from the bottom and enters the oil storage device 2 of the transformer again, so that the heat dissipation efficiency of the transformer is greatly improved.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A low loss oil-immersed transformer, comprising:
a three-phase oil-immersed transformer body; an oil storage device is arranged on the three-phase oil-immersed transformer body;
a transformer shell is arranged above the oil storage device, and the upper surface of the oil storage device is fixedly connected with the bottom of the transformer shell;
a fastening structure is arranged on one side of the outer wall of the front side of the transformer shell; the lower end of the fastening structure is connected with the upper surface of the three-phase oil-immersed transformer body, and the upper end of the fastening structure is connected with the top of the transformer shell and used for fixing the transformer shell;
an iron core winding box is arranged at the upper end of the transformer shell, an iron core winding is arranged in the iron core winding box, a corrosion-resistant sealing cover is fixedly installed above the iron core winding box, and an explosion-proof device is arranged above the corrosion-resistant sealing cover;
the other side of the outer wall of the front side of the transformer shell is provided with a corrugated sheet, and the corrugated sheet is positioned below the explosion-proof device;
a heat dissipation device is arranged on the outer wall of one side of the transformer shell; the top end of the heat dissipation device is connected with the corrosion-resistant sealing cover, and the outer wall of the side face of the heat dissipation device is provided with the tapping switch device.
2. The low loss oil-immersed transformer according to claim 1, wherein said corrugated sheets comprise three, each corrugated sheet having the same structure and being disposed parallel to each other.
3. The low loss oil-immersed transformer according to claim 2, wherein each of said corrugated sheets has a length less than the height of the transformer housing.
4. The low loss oil-immersed transformer according to claim 3, wherein each of said corrugated sheets is parallel to the height direction of the transformer housing.
5. The low-loss oil-immersed transformer according to claim 4, wherein a data acquisition device is fixedly connected to the outer wall of the transformer housing, and the data acquisition device is located at the right end of the fastening structure and is used for acquiring data of the transformer.
6. The low loss oil-immersed transformer according to claim 5, wherein said explosion protection means is disposed in parallel above the corrosion resistant hermetic cover.
7. The low loss oil-immersed transformer according to claim 6, wherein the length direction of said fastening structure is parallel to the height direction of the transformer housing.
8. The low loss oil-immersed transformer according to claim 7, wherein said tap changer means comprises four tap changers, each tap changer being of identical construction.
9. The low-loss oil-immersed transformer according to claim 8, wherein a foldable buffer bracket is fixedly connected to the bottom of the three-phase oil-immersed transformer body.
10. The low-loss oil-immersed transformer according to claim 9, wherein the foldable buffer brackets comprise two buffer brackets, and the two buffer brackets are respectively connected to two sides of the bottom of the three-phase oil-immersed transformer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021469610.3U CN213025724U (en) | 2020-07-23 | 2020-07-23 | Low-loss oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021469610.3U CN213025724U (en) | 2020-07-23 | 2020-07-23 | Low-loss oil-immersed transformer |
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| Publication Number | Publication Date |
|---|---|
| CN213025724U true CN213025724U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021469610.3U Active CN213025724U (en) | 2020-07-23 | 2020-07-23 | Low-loss oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213025724U (en) |
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2020
- 2020-07-23 CN CN202021469610.3U patent/CN213025724U/en active Active
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