CN112489938B - Transformer cooling device supporting structure - Google Patents
Transformer cooling device supporting structure Download PDFInfo
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- CN112489938B CN112489938B CN202011219796.1A CN202011219796A CN112489938B CN 112489938 B CN112489938 B CN 112489938B CN 202011219796 A CN202011219796 A CN 202011219796A CN 112489938 B CN112489938 B CN 112489938B
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- support
- main pipe
- pipe
- cooling device
- plate
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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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention relates to a supporting structure of a transformer cooling device, comprising: the support base can directly fall to the ground to play a supporting role, and the air cooler support bracket is fixedly connected with the support base and is of an upper-lower split structure; the upper part of the air cooler support bracket is provided with an upper converging main pipe, the lower part of the air cooler support bracket is provided with a lower converging main pipe, and the upper converging main pipe and the lower converging main pipe are respectively connected with the transformer oil tank and the air cooler. The invention provides a transformer cooling device supporting structure which is convenient for saving stations and is used for independently installing a cooling device, so that the installation of the cooling device is not limited by an installation environment and stations, and the cooling device is integrally installed on a transformer body, thereby saving the installation stations and time; the cooling device supporting structure adopts an upper and lower split structure, has compact structure, meets the requirement of transportation size, and ensures the reliable and safe operation of the structure.
Description
Technical Field
The invention belongs to the technical field of transformer production and manufacturing, and particularly relates to a supporting device of a transformer cooling device, which is convenient for independent assembly of an air cooler with a station saving function.
Background
The cooling device of the transformer distributes heat generated by the operation of the transformer to ensure the safe operation of the transformer. The transformer cooling device generally comprises an air cooler, an oil pump, an oil flow relay, a cooling pipeline, an air cooler bracket, a valve and the like, and can move along with the transformer body.
The setting of the cooling device of the transformer requires to determine the capacity and the group number of the air coolers according to the capacity and the temperature rise requirement of the transformer. At present, the transformer air cooler is arranged in a vertical arrangement mode, and the vertical arrangement of the air cooler is beneficial to maintenance and overhaul of the air cooler. However, when the capacity of the transformer is large and the temperature rise is required to be low, the number of fans is excessive and the height of the air cooler is too high. At this time, the problem can be solved by increasing the number of the air cooler groups, and a plurality of groups of air coolers need to be transversely placed, so that a supporting structure suitable for transversely placing the plurality of groups of air coolers needs to be designed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a transformer cooling device supporting structure which is convenient for station saving and independently assembling a plurality of groups of air coolers, ensures that the supporting structure has good strength and rigidity, and is convenient to install and transport. The technical scheme adopted by the invention is as follows:
a transformer cooling device support structure comprising: the support base can directly fall to the ground to play a supporting role, and the air cooler support bracket is fixedly connected with the support base and is of a grid-shaped upper-lower split structure; the upper part of the air cooler support bracket is provided with an upper converging main pipe, the lower part of the air cooler support bracket is provided with a lower converging main pipe, and the upper converging main pipe and the lower converging main pipe are respectively connected with the transformer oil tank and the air cooler.
The air cooler group is fixedly arranged on an air cooler support bracket, the size of the air cooler support bracket, the maximum length of the upper converging main pipe and the lower converging main pipe are flexibly set according to the number of the air cooler groups to be arranged. The transformer hot oil enters an upper converging main pipe, enters an air cooler from the upper converging main pipe for cooling, and the cooled transformer oil enters a lower converging main pipe and flows back into a transformer oil tank from the lower converging main pipe.
The invention has the beneficial effects that:
1) The invention provides a transformer cooling device supporting structure which is convenient for saving stations and is used for independently installing a cooling device, so that the installation of the cooling device is not limited by an installation environment and stations, and the cooling device is integrally installed on a transformer body, thereby saving the installation stations and time;
2) The cooling device supporting structure adopts an upper and lower split structure, has compact structure, meets the requirement of transportation size, and ensures the reliable and safe operation of the structure;
3) The supporting structure of the cooling device can freely select the assembly place and the station of the air cooler, does not depend on the constraint of the assembly space and the time of the transformer body, can complete the assembly of a plurality of groups of air coolers, is convenient to assemble, achieves the purposes that the cooling device can save the station and can be independently installed, and has wide application prospects in the production of transformers.
Drawings
In order to more clearly illustrate the embodiments of the present application, 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 apparent that the drawings in the following description are specific embodiments of the application and that other drawings within the scope of the application may be obtained from these drawings by those skilled in the art without inventive effort.
FIG. 1 is a front view of a cooling device mount structure according to an embodiment of the present invention;
FIG. 2 is a left side view of a cooling device mount structure according to an embodiment of the present invention;
FIG. 3 is a front view of a support base of a cooling device bracket structure of an embodiment of the present invention;
FIG. 4 is a top view of a support base of a cooling device mount structure according to an embodiment of the present invention;
FIG. 5 is a front view of the structure of an air cooler support bracket according to an embodiment of the present invention;
In the figure, a 1-upper confluence main pipe, a 2-lower confluence main pipe, a 3-split connecting structure, a 4-supporting base, a 5-transverse supporting pipe, a 6-vertical supporting pipe, a 7-upper fixing support, an 8-lower fixing support, a 9-upper oil tank connecting supporting plate, a 10-lower oil tank connecting supporting plate, a 11-first flange hole, a 12-first return oil tank connecting pipe, a 13-second return oil tank connecting pipe, a 14-second flange hole, a 15-lower bottom plate, a 16-rear side supporting plate, a 17-middle vertical plate, a 18-groove and a 19-traction hole.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a front view of a cooling device bracket structure according to an embodiment of the present invention; as shown in fig. 2, a left side view of a cooling device bracket structure according to an embodiment of the present invention. A transformer cooling device support structure comprising: the support base 4 can directly fall to the ground to play a supporting role, and the support base 4 is used for integrally and fixedly supporting the supporting structure of the cooling device. FIG. 3 is a front view of a support base of a cooling device support structure according to an embodiment of the present invention; as shown in fig. 4, a top view of a support base of a cooling device support structure according to an embodiment of the present invention is shown. The supporting base 4 comprises a rectangular lower bottom plate 15 which is contacted with the ground to play a role of stable supporting, and the lower bottom plate 15 adopts a common carbon steel plate with the thickness of 20mm Q235-B. A rectangular rear support plate 16 perpendicular to the lower plate 15 is provided on one end width side of the lower plate 15. A middle vertical plate 17 is arranged at the central line of the lengths of the lower bottom plate 15 and the rear side supporting plate 16, a groove 18 is arranged at one end of the middle vertical plate 17 close to the rear side supporting plate 16, and a unfilled corner is arranged at the upper part of one end of the middle vertical plate 17 far away from the rear side supporting plate 16, so that the unfilled corner design can save materials; a traction hole 19 with the diameter of 50mm is arranged at a position below the unfilled corner, and the traction hole 19 is used as a lifting point during lifting.
The maximum length sizes of the upper converging main pipe 1 and the lower converging main pipe 2 of the cooling device are determined according to the number of the air cooler groups and the assembly space, and the sizes of the two supporting bases 4 are determined. The lower bottom plate 15, the rear side supporting plate 16 and the middle vertical plate 17 adopt welding structures, the butt welding positions are chamfered by 2 x 45 degrees and then butt welded, external welding lines are smooth, knots or pits cannot be formed, the whole body is polished smoothly, and the welding structures ensure the mechanical strength and stability of the supporting structure of the cooling device during the whole assembly. Leaving a bridge box mounting space at the upper step gap of the recess 18.
The lower converging main pipe 2 is fixedly provided with a vertical supporting pipe 6 in a welding mode, and is fixedly provided with a transverse supporting pipe 5 perpendicular to the vertical supporting pipe 6 in a welding mode. The transverse support tube 5 and the vertical support tube 6 form a latticed air cooler support bracket. The number of the transverse supporting tubes 5 and the number of the vertical supporting tubes 6 are determined according to the number of the air coolers to be installed, as shown in fig. 5, which is a front view of a structure of the air cooler supporting bracket according to the embodiment of the invention, the air cooler supporting bracket is composed of 5 vertical supporting tubes 6 and 1 transverse supporting tube 5, and four groups of air coolers (a group of air coolers is arranged between every 2 vertical supporting tubes 6) can be installed.
The vertical support tube 6 is formed by combining an upper support tube and a lower support tube through a split connecting structure 3, the split connecting structure 3 is formed by two opposite steel plates, holes are formed in the steel plates for the fastening bolts to pass through, the steel plates are welded on the upper support tube and the lower support tube, and the fastening bolts are used for tightening through the holes, so that the complete vertical support tube 6 is formed. The horizontal support pipes 5 and the vertical support pipes 6 are preferably square pipes, and the support strength is better. The vertical support tube 6 adopts an upper-lower split structure, is convenient to install while guaranteeing strength, and solves the problem that the height of the support structure exceeds the limit during transportation.
An upper fixing support 7 is fixedly arranged at the upper end part of the vertical support tube 6 in a welding mode, a lower fixing support 8 is fixedly arranged at the lower end part of the vertical support tube 6 in a welding mode, and two adjacent upper fixing supports 7 and two adjacent lower fixing supports 8 are combined into a rectangular frame structure for fixedly arranging the air cooler. The upper fixing support 7 and the lower fixing support 8 are provided with reinforcing ribs for reinforcing supporting strength, and the lower fixing support 8 adopts I-steel for reinforcing supporting strength. The upper fixing support 7 and the reinforcing ribs adopt Q235-B common carbon steel plates, and the lower fixing support 8 adopts Q235-B I-steel plates.
An upper bus duct 1 is fixedly arranged at the upper end of the vertical support pipe 6 in a welding manner, and a lower bus duct 2 is fixedly arranged at the lower end of the vertical support pipe 6 in a welding manner. The sections of the upper converging main pipe 1 and the lower converging main pipe 2 are rectangular, the rectangular section has the advantages of high strength and good supporting effect, a Q345B cold-drawn seamless square steel pipe is adopted, and a flange interface is reserved at the end part, so that paint spraying, flushing and cover plate sealing are facilitated. A first flange hole 11 is formed in one side, facing the oil tank, of the upper converging main pipe 1, the upper converging main pipe 1 is communicated with the oil tank of the transformer through the first flange hole 11, and hot oil in the oil tank of the transformer enters the upper converging main pipe 1 through the first flange hole 11; and more than one second flange hole 14 (the number of the second flange holes 14 corresponds to that of the air coolers) is arranged on one side, opposite to the air coolers, of the upper converging main pipe 1, the upper converging main pipe 1 is communicated with the air coolers through the second flange holes 14, and hot oil of the upper converging main pipe 1 enters the air coolers through the second flange holes 14 for cooling.
Correspondingly, more than one third flange hole (the number of the third flange holes corresponds to the number of the air coolers) is arranged right below the upper part of the lower converging main pipe 2, the lower converging main pipe 2 is communicated with the air coolers through the third flange holes, and cold oil cooled by the air coolers enters the lower converging main pipe 2 through the third flange holes; the first oil return tank connecting pipe 12 and the second oil return tank connecting pipe 13 are arranged right below the upper part of the lower converging main pipe 2, the lower converging main pipe 2 is communicated with the transformer oil tank through the first oil return tank connecting pipe 12 and the second oil return tank connecting pipe 13, and cold oil cooled by the air cooler flows back into the transformer oil tank from the lower converging main pipe 2 through the first oil return tank connecting pipe 12 and the second oil return tank connecting pipe 13.
In the embodiment of the invention, an upper oil tank connecting support plate 9 and a lower oil tank connecting support plate 10 are also arranged, and bolt holes with long round hole structures are arranged on the upper oil tank connecting support plate 9 and the lower oil tank connecting support plate 10. One ends of the upper oil tank connecting support plate 9 and the lower oil tank connecting support plate 10 are fixedly arranged on the transverse support tube 5 and the lower converging main tube 2 in a welding mode respectively, and the other ends of the upper oil tank connecting support plate and the lower oil tank connecting support plate pass through bolt holes of a slotted hole structure through fastening bolts and are fixedly connected with an oil tank bracket.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that: any person skilled in the art may modify or easily conceive of changes to the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (5)
1. A transformer cooling device support structure, comprising: the support base (4) can directly fall to the ground to play a supporting role, and the air cooler support bracket is fixedly connected with the support base (4) and is of a grid-shaped upper-lower split structure; an upper converging main pipe (1) is arranged at the upper part of the air cooler supporting bracket, a lower converging main pipe (2) is arranged at the lower part of the air cooler supporting bracket, and the upper converging main pipe (1) and the lower converging main pipe (2) are respectively connected with a transformer oil tank and the air cooler;
The air cooler support bracket is formed by vertically welding a transverse support pipe (5) and a vertical support pipe (6), the vertical support pipe (6) is formed by combining an upper support pipe and a lower support pipe through a split connection structure (3), the split connection structure (3) is formed by two opposite steel plates, the steel plates are welded on the upper support pipe and the lower support pipe, and holes are formed in the steel plates for the fastening bolts to pass through;
an upper converging main pipe (1) is fixedly arranged at the upper end part of the vertical supporting pipe (6) in a welding mode, a lower converging main pipe (2) is fixedly arranged at the lower end part of the vertical supporting pipe (6) in a welding mode, the cross sections of the upper converging main pipe (1) and the lower converging main pipe (2) are rectangular, and a flange disc interface is reserved at the end part;
A first flange hole (11) is arranged on one side, facing the oil tank, of the upper converging main pipe (1), and second flange holes (14) corresponding to the number of air coolers are arranged on one side, facing the air coolers, of the upper converging main pipe (1); a third flange hole corresponding to the number of air coolers is arranged on one side, facing the air coolers, of the lower converging main pipe (2), and a first oil return tank connecting pipe (12) and a second oil return tank connecting pipe (13) are arranged at the lower part of the lower converging main pipe (2);
The support base (4) comprises: a rectangular lower plate (15), wherein a rectangular rear support plate (16) perpendicular to the lower plate (15) is provided on one end width side of the lower plate (15), and a middle vertical plate (17) is provided on the center line of the length of the lower plate (15) and the rear support plate (16);
One end of the middle vertical plate (17) close to the rear side supporting plate (16) is provided with a groove (18), the upper part of one end of the middle vertical plate (17) far away from the rear side supporting plate (16) is provided with a unfilled corner, and a traction hole (19) is arranged at the position below the unfilled corner.
2. A transformer cooling device support structure according to claim 1, characterized in that the transverse support tube (5) and the vertical support tube (6) are square tubes.
3. A supporting structure of a transformer cooling device according to claim 1, characterized in that an upper fixing bracket (7) is fixedly arranged at the upper end of the vertical supporting tube (6) in a welding manner, and a lower fixing bracket (8) is fixedly arranged at the lower end of the vertical supporting tube (6) in a welding manner.
4. A supporting structure of a transformer cooling device according to claim 3, wherein the upper fixing support (7) and the lower fixing support (8) are provided with reinforcing ribs, the upper fixing support (7) and the reinforcing ribs are made of Q235-B common carbon steel plates, and the lower fixing support (8) is made of Q235-B I-steel.
5. A transformer cooling device support structure according to any one of claims 1-4, further comprising: the upper oil tank connecting support plate (9), lower part oil tank connecting support plate (10), be provided with the bolt hole of slotted hole structure on upper portion oil tank connecting support plate (9), lower part oil tank connecting support plate (10), upper portion oil tank connecting support plate (9), lower part oil tank connecting support plate (10) one end is fixed to be set up respectively on horizontal stay tube (5), lower part main pipe (2) that converges with the welding mode, the other end pass behind the bolt hole of slotted hole structure with oil tank support fixed connection through fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011219796.1A CN112489938B (en) | 2020-11-04 | 2020-11-04 | Transformer cooling device supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011219796.1A CN112489938B (en) | 2020-11-04 | 2020-11-04 | Transformer cooling device supporting structure |
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| Publication Number | Publication Date |
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| CN112489938A CN112489938A (en) | 2021-03-12 |
| CN112489938B true CN112489938B (en) | 2024-05-24 |
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| CN202011219796.1A Active CN112489938B (en) | 2020-11-04 | 2020-11-04 | Transformer cooling device supporting structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116453817B (en) * | 2023-05-05 | 2025-08-26 | 山东电力设备有限公司 | A transformer heat dissipation and cooling pipe support structure |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3370216A (en) * | 1965-12-21 | 1968-02-20 | Gen Electric | Integral transformer-rectifier system wherein liquid cooled heatsinks for current rectifying components are mounted on coaxial bushings |
| GB1180803A (en) * | 1966-06-23 | 1970-02-11 | Udylite Corp | Improvements in or relating to Heat Exchangers for Cooling Electrical Apparatus. |
| CN2594943Y (en) * | 2002-12-31 | 2003-12-24 | 特变电工衡阳变压器有限公司 | Cooling structure of oil immersion self cooling transformer |
| CN1862719A (en) * | 2005-11-17 | 2006-11-15 | 中国科学院电工研究所 | Evaporation cooling transformer |
| CN201600991U (en) * | 2010-01-28 | 2010-10-06 | 四川蜀能电器有限责任公司 | Split type full-self-cooling concentrated-heat-radiation transformer system |
| CN202034170U (en) * | 2010-12-30 | 2011-11-09 | 保定天威集团有限公司 | Fixing and supporting structure for finned radiator cooling device of transformer |
| CN202034169U (en) * | 2010-12-31 | 2011-11-09 | 保定天威集团有限公司 | Integral assembling and disassembling structure of cooler group of converter transformer |
| CN202339792U (en) * | 2011-11-28 | 2012-07-18 | 上海一电变压器有限公司 | Mounting component of dry-type transformer cooling fan |
| CN205104328U (en) * | 2015-11-04 | 2016-03-23 | 国家电网公司 | Split type heat radiation structure of 110kV transformer level |
| CN205230722U (en) * | 2015-12-28 | 2016-05-11 | 保定天威保变电气股份有限公司 | Transformer cooling device's frame rack structure |
| CN107017077A (en) * | 2017-05-22 | 2017-08-04 | 江苏海鼎电气科技有限公司 | A kind of forced oil-circulation cooled high-power transformer cooler |
| CN207781349U (en) * | 2017-12-15 | 2018-08-28 | 保定保菱变压器有限公司 | A kind of novel transformer forced air cooler support construction |
| CN208335937U (en) * | 2018-07-17 | 2019-01-04 | 沈阳丰晟电力设备有限公司 | A kind of 35kv or less transformer ripple cooler |
| CN208673852U (en) * | 2018-09-28 | 2019-03-29 | 江苏华鹏变压器有限公司 | Radiator mounting and heat sink assembly |
| CN214012687U (en) * | 2020-11-04 | 2021-08-20 | 中国南方电网有限责任公司超高压输电公司 | Transformer cooling device bearing structure |
-
2020
- 2020-11-04 CN CN202011219796.1A patent/CN112489938B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3370216A (en) * | 1965-12-21 | 1968-02-20 | Gen Electric | Integral transformer-rectifier system wherein liquid cooled heatsinks for current rectifying components are mounted on coaxial bushings |
| GB1180803A (en) * | 1966-06-23 | 1970-02-11 | Udylite Corp | Improvements in or relating to Heat Exchangers for Cooling Electrical Apparatus. |
| CN2594943Y (en) * | 2002-12-31 | 2003-12-24 | 特变电工衡阳变压器有限公司 | Cooling structure of oil immersion self cooling transformer |
| CN1862719A (en) * | 2005-11-17 | 2006-11-15 | 中国科学院电工研究所 | Evaporation cooling transformer |
| CN201600991U (en) * | 2010-01-28 | 2010-10-06 | 四川蜀能电器有限责任公司 | Split type full-self-cooling concentrated-heat-radiation transformer system |
| CN202034170U (en) * | 2010-12-30 | 2011-11-09 | 保定天威集团有限公司 | Fixing and supporting structure for finned radiator cooling device of transformer |
| CN202034169U (en) * | 2010-12-31 | 2011-11-09 | 保定天威集团有限公司 | Integral assembling and disassembling structure of cooler group of converter transformer |
| CN202339792U (en) * | 2011-11-28 | 2012-07-18 | 上海一电变压器有限公司 | Mounting component of dry-type transformer cooling fan |
| CN205104328U (en) * | 2015-11-04 | 2016-03-23 | 国家电网公司 | Split type heat radiation structure of 110kV transformer level |
| CN205230722U (en) * | 2015-12-28 | 2016-05-11 | 保定天威保变电气股份有限公司 | Transformer cooling device's frame rack structure |
| CN107017077A (en) * | 2017-05-22 | 2017-08-04 | 江苏海鼎电气科技有限公司 | A kind of forced oil-circulation cooled high-power transformer cooler |
| CN207781349U (en) * | 2017-12-15 | 2018-08-28 | 保定保菱变压器有限公司 | A kind of novel transformer forced air cooler support construction |
| CN208335937U (en) * | 2018-07-17 | 2019-01-04 | 沈阳丰晟电力设备有限公司 | A kind of 35kv or less transformer ripple cooler |
| CN208673852U (en) * | 2018-09-28 | 2019-03-29 | 江苏华鹏变压器有限公司 | Radiator mounting and heat sink assembly |
| CN214012687U (en) * | 2020-11-04 | 2021-08-20 | 中国南方电网有限责任公司超高压输电公司 | Transformer cooling device bearing structure |
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| CN112489938A (en) | 2021-03-12 |
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