CN111627665A - Oil pump arrangement structure and method for large transformer cooler - Google Patents
Oil pump arrangement structure and method for large transformer cooler Download PDFInfo
- Publication number
- CN111627665A CN111627665A CN202010511854.1A CN202010511854A CN111627665A CN 111627665 A CN111627665 A CN 111627665A CN 202010511854 A CN202010511854 A CN 202010511854A CN 111627665 A CN111627665 A CN 111627665A
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- China
- Prior art keywords
- transformer
- oil
- pipe
- cooler
- oil pump
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention relates to an oil pump arrangement structure and method for a large transformer cooler, and belongs to the technical field of transformers. The technical scheme is as follows: contain allies oneself with pipe (1), upper portion collecting pipe (3), air-cooled cooler (5), allies oneself with three (7), oil pump (8), lower part collecting pipe (9), allies oneself with four (10) of pipe and transformer (11), the end of producing oil of transformer (11) is connected with upper portion collecting pipe (3) through alliing oneself with pipe (1), upper portion collecting pipe (3) are connected with air-cooled cooler (5) entry through oil pump (8), air-cooled cooler (5) export is connected with lower part collecting pipe (9) through alliing oneself with three (7) of pipe, lower part collecting pipe (9) are connected with the oil feed end of transformer (11) through alliing oneself with four (10) of pipe. The invention has the beneficial effects that: the oil pump position is reasonably set, and the transformer oil is pushed into the cooler through the oil pump, so that the cooling capacity, the oil flow noise and the oil circuit pressure drop of the cooler meet the standard.
Description
Technical Field
The invention relates to an oil pump arrangement structure and method for a large transformer cooler, and belongs to the technical field of transformers.
Background
In the operation process of a large power transformer, the iron core, the winding and the steel structural member all generate loss. These losses will be converted into heat, which will raise the temperature of the transformer itself, accelerate the aging of the insulating material and shorten the service life of the transformer. In order to ensure the service life of the transformer, effective cooling measures should be taken.
For a large-capacity transformer, a cooling device is required to be adopted for heat dissipation, and the cooling device for the transformer mainly comprises a finned radiator, a forced oil circulation air cooler and a forced oil circulation water cooler. The cooling device is mainly selected according to the operating environment of the transformer and the parameters such as temperature rise, noise, heat dissipation capacity and the like required by the operation of the transformer, and a forced oil circulation air cooler is commonly used for a large-capacity transformer.
At present, the arrangement structure of the forced oil circulation air cooler has the following defects: when the cooling capacity of the cooler becomes large, the oil flow resistance at the corresponding flow rate also doubles. At this time, a high-lift, high-power oil pump needs to be replaced to enhance oil circulation. However, negative pressure may occur in the oil pump, and the oil pump may generate cavitation after long-time operation, which may cause a decrease in the flow, lift, efficiency, and shaft power curves of the oil pump, and noise and vibration associated with a strong oil hammer, and may cause a phenomenon of liquid cutoff or even damage to an impeller in a severe case, so that the oil pump may not work normally, thereby contaminating the oil path of the entire transformer, and causing an excessive noise level measurement or oil flow noise.
Disclosure of Invention
The invention aims to provide an oil pump arrangement structure and method for a large transformer cooler, which are used for reasonably setting the position of an oil pump and pushing transformer oil into the cooler through the oil pump so as to solve the problems in the background technology.
The technical scheme of the invention is as follows:
the utility model provides a large-scale transformer cooler oil pump arrangement structure, contains allies oneself with pipe one, upper portion collecting pipe, air cooler, allies oneself with pipe three, the oil pump, the lower part collecting pipe, allies oneself with pipe four and transformer, the end of producing oil of transformer is connected with the upper portion collecting pipe through allies oneself with pipe one, the upper portion collecting pipe passes through the oil pump and is connected with air cooler entry, the export of air cooler is connected with the lower part collecting pipe through alliing oneself with pipe three, the lower part collecting pipe is connected with the oil feed end of transformer through alliing oneself with pipe four.
A method for arranging oil pumps of a large transformer cooler adopts the oil pump arrangement structure of the transformer cooler, and comprises the following steps: the oil pump sucks transformer oil from the oil outlet end of the transformer through the upper collecting pipe and the first connecting pipe, the transformer oil is pumped into the air cooler, the transformer oil enters the oil inlet end of the transformer through the third connecting pipe and the lower collecting pipe after being cooled by the air cooler, and then flows to the oil outlet end of the transformer through the body of the transformer, so that a complete transformer oil circulating system is formed.
Verification formula of cooling capacity of cooler:
Py＝QyρyCy(t'y-t"y)*10-6/3.6
if it is not
The test is basically correct;
wherein P is actual cooling power (kW); pyOil power (kW); qyIs the oil flow (m) at the time of the test3/h)；ρyIs the transformer oil density (kg/m)3)；CySpecific heat capacity of transformer oil [ J/(kg. K)]；t'yInlet oil temperature (deg.C); t'yThe outlet oil temperature (deg.C).
The invention has the beneficial effects that: the oil pump position is reasonably set, and the transformer oil is pushed into the cooler through the oil pump, so that the cooling capacity, the oil flow noise and the oil circuit pressure drop of the cooler meet the standard.
Drawings
FIG. 1 is a schematic view of the present invention;
in the figure: 1. a first connecting pipe; 2. a support; 3. an upper manifold; 4. a second connecting pipe; 5. a wind cooler; 6. a blowing device; 7. connecting pipes; 8. an oil pump; 9. a lower manifold; 10. connecting pipes; 11. a transformer.
Detailed Description
The invention is further illustrated by way of example in the following with reference to the accompanying drawings.
Referring to the attached drawing 1, the oil pump arrangement structure of the large-scale transformer cooler comprises a first connecting pipe 1, an upper collecting pipe 3, an air cooler 5, a third connecting pipe 7, an oil pump 8, a lower collecting pipe 9, a fourth connecting pipe 10 and a transformer 11, wherein an oil outlet end of the transformer 11 is connected with the upper collecting pipe 3 through the first connecting pipe 1, the upper collecting pipe 3 is connected with an inlet of the air cooler 5 through the oil pump 8, an outlet of the air cooler 5 is connected with the lower collecting pipe 9 through the third connecting pipe 7, and the lower collecting pipe 9 is connected with an oil inlet end of the transformer 11 through the fourth connecting pipe 10.
A method for arranging oil pumps of a large transformer cooler adopts the oil pump arrangement structure of the transformer cooler, and comprises the following steps: the oil pump 8 sucks transformer oil from the oil outlet end of the transformer 11 through the upper collecting pipe 3 and the first connecting pipe 1, the transformer oil is pumped into the air cooler 5, the transformer oil is cooled by the air cooler 5, then enters the oil inlet end of the transformer 11 through the third connecting pipe 7 and the lower collecting pipe 9, and then flows to the oil outlet end of the transformer through the transformer body of the transformer 11, and a complete transformer oil circulating system is formed.
In the present embodiment, when the head and the power of the oil pump of the cooler are large, the oil pump 8 is provided at the oil flow inlet of the cooler 5, as shown in fig. 1. The oil pump 8 sucks transformer oil from the oil outlet end of the transformer 11 through the upper collecting pipe 3 and the first connecting pipe 1, the transformer oil is pumped into the air cooler 5, the transformer oil is cooled by the air cooler 5, then enters the oil inlet end of the transformer 11 through the third connecting pipe 7 and the lower collecting pipe 9, and then flows to the oil outlet end of the transformer 11 through the transformer body, and a complete transformer oil circulating system is formed.
The arrangement structure is that the oil pump 8 is arranged at the oil flow inlet of the cooler 5, the transformer oil is pushed into the cooler 5 through the oil pump 8 instead of being absorbed from the outlet of the cooler 5, and simulation tests prove that the cooling capacity, the oil flow noise and the oil circuit pressure drop of the cooler meet the standards.
Claims (2)
1. The utility model provides a large-scale transformer cooler oil pump arrangement structure which characterized in that: contain allies oneself with pipe (1), upper portion collecting pipe (3), air-cooled cooler (5), allies oneself with three (7), oil pump (8), lower part collecting pipe (9), allies oneself with four (10) of pipe and transformer (11), the end of producing oil of transformer (11) is connected with upper portion collecting pipe (3) through alliing oneself with pipe (1), upper portion collecting pipe (3) are connected with air-cooled cooler (5) entry through oil pump (8), air-cooled cooler (5) export is connected with lower part collecting pipe (9) through alliing oneself with three (7) of pipe, lower part collecting pipe (9) are connected with the oil feed end of transformer (11) through alliing oneself with four (10) of pipe.
2. The arrangement method of the oil pump of the large transformer cooler according to claim 1, wherein the arrangement structure of the oil pump of the transformer cooler according to claim 1 is characterized in that: an oil pump (8) sucks transformer oil from an oil outlet end of a transformer (11) through an upper collecting pipe (3) and a connecting pipe I (1), the transformer oil is pumped into an air cooler (5), the transformer oil enters an oil inlet end of the transformer (11) through a connecting pipe III (7) and a lower collecting pipe (9) after being cooled by the air cooler (5), and then flows to the oil outlet end of the transformer through a transformer body of the transformer (11), so that a complete transformer oil circulating system is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010511854.1A CN111627665A (en) | 2020-06-08 | 2020-06-08 | Oil pump arrangement structure and method for large transformer cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010511854.1A CN111627665A (en) | 2020-06-08 | 2020-06-08 | Oil pump arrangement structure and method for large transformer cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111627665A true CN111627665A (en) | 2020-09-04 |
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ID=72271953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010511854.1A Pending CN111627665A (en) | 2020-06-08 | 2020-06-08 | Oil pump arrangement structure and method for large transformer cooler |
Country Status (1)
| Country | Link |
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| CN (1) | CN111627665A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115064353A (en) * | 2022-05-07 | 2022-09-16 | 正泰电气股份有限公司 | Cooling medium passage structure for reducing temperature rise, transformer and method for reducing temperature rise |
-
2020
- 2020-06-08 CN CN202010511854.1A patent/CN111627665A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115064353A (en) * | 2022-05-07 | 2022-09-16 | 正泰电气股份有限公司 | Cooling medium passage structure for reducing temperature rise, transformer and method for reducing temperature rise |
| CN115064353B (en) * | 2022-05-07 | 2023-12-29 | 正泰电气股份有限公司 | Cooling medium passage structure for reducing temperature rise, transformer and method for reducing temperature rise |
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