CN211016738U - Three-phase oil-immersed distribution transformer - Google Patents
Three-phase oil-immersed distribution transformer Download PDFInfo
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- CN211016738U CN211016738U CN201921600249.0U CN201921600249U CN211016738U CN 211016738 U CN211016738 U CN 211016738U CN 201921600249 U CN201921600249 U CN 201921600249U CN 211016738 U CN211016738 U CN 211016738U
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Abstract
The utility model discloses a three-phase oil-immersed distribution transformer, including the casing, be equipped with temperature sensor in the casing, be equipped with oil level sensor on the inside wall of casing, be provided with the radiating shell on a set of relative lateral wall of casing, the last downside of radiating shell is provided with the radiator fan of symmetry, and another set of relative lateral wall of casing is the ripple piece, and the below of casing is provided with bumper shock absorber and layer board, P L C controller is connected to the equal electricity of temperature sensor, oil level sensor, radiator fan and transformer switch, this utility model has the beneficial effects of (1) temperature and oil mass in the real time monitoring oil tank to according to temperature regulation radiator fan or according to temperature and oil mass close the switch of this transformer, avoid transformer oil to reveal or the harm to this transformer that the temperature is too high, (2) this three-phase oil-immersed distribution transformer transportation convenience, vibration/noise reduction, high and energy-concerving and.
Description
Technical Field
The utility model relates to a transformer field, concretely relates to three-phase oil-immersed distribution transformer.
Background
The distribution transformer is a static electric appliance which is used in a distribution system to transform alternating voltage and current according to the electromagnetic induction law and transmit alternating current energy, and is an important device in power supply and distribution systems of industrial and mining enterprises and civil buildings. At present, the distribution transformers which are used more mainly comprise oil immersed transformers and amorphous alloy transformers.
An oil-immersed distribution transformer is a distribution transformer using transformer oil as an insulating and cooling medium, and is classified into a three-phase transformer and a single-phase transformer according to the number of phases. The three-phase oil-immersed distribution transformer has the characteristics of low loss, large capacity, low price and the like, and mainly comprises an iron core, a winding, an oil tank, an oil conservator, an insulating sleeve, a tap switch, a gas relay and the like.
Three-phase oil-immersed distribution transformer is at the operation in-process, the power consumption in iron core and the winding can produce a large amount of heats, the good or bad performance of heat dispersion can influence the working property and the life of transformer, for solving this problem, chinese patent CN203966747U discloses a three-phase oil-immersed transformer, which comprises an oil tank, direct current power supply, the winding, the iron core, a plurality of radiator fan, support chassis, high-tension bushing and low-voltage bushing, and the oil tank has included interior casing and shell body, this utility model discloses a set up a plurality of radiator fan on the shell body and form the convection current, make the interior casing surrounded by four dynamic wind screens, in order to take the heat of interior casing outside the transformer fast. However, the cooling fan is in a constantly-opened state rather than adjusting the switch of the cooling fan in real time according to temperature changes, which is not energy-saving and environment-friendly, and the transformer is inconvenient to transport.
Disclosure of Invention
To prior art's defect, the utility model provides a three-phase oil-immersed distribution transformer, this transformer have the transportation convenient, can adjust temperature and oil mass, vibration/noise reduction's in radiator fan on-off state, the control oil tank in real time efficiency.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a three-phase oil-immersed distribution transformer comprises a shell, wherein a temperature sensor is arranged in the shell, an oil level sensor is arranged on the inner side wall of the shell, heat dissipation shells are arranged on one group of opposite outer side walls of the shell, heat dissipation fans are arranged on the upper side and the lower side of each heat dissipation shell, the other group of opposite outer side walls of the shell are corrugated sheets, and the temperature sensor, the oil level sensor, the heat dissipation fans and a transformer switch are electrically connected with a P L C controller.
The heat radiation fan can be opened when the temperature in the oil tank is too high, so that air flow is realized to take away heat; the corrugated sheet can adapt to the volume change of oil by elasticity of the corrugated sheet, automatically adjust and compensate, and avoid the expansion crack of the shell caused by the increase of the volume of the variable pressure oil in the oil tank due to temperature; .
But wherein temperature sensor real time monitoring oil tank inside temperature, predetermine the temperature of opening radiator fan and closing the transformer in advance, when temperature sensor sensed the temperature in the oil tank and was higher than predetermined radiator fan's temperature, accessible P L C controller opens radiator fan automatically and carries out temperature regulation, it is difficult to adjust to the high temperature in the oil tank, temperature sensor senses when the temperature is higher than predetermined closing transformer's temperature in the oil tank, accessible P L C controller self-closing transformer, avoid the high temperature to damage this transformer.
But the oil level in the real time monitoring oil tank of oil level sensor, when oil level was less than the default in the oil tank was sensed to oil level sensor, the switch of accessible P L C controller self-closing transformer avoided appearing the oil mass because of revealing etc. and reduces, and the winding exposes the oil level and takes place the short circuit, leads to the transformer to damage.
Preferably, the cooling fans are vertically symmetrical, so that air convection can be formed, and the oil tank can be better cooled.
Preferably, a damper and a support plate are disposed below the housing, wherein the damper reduces noise generated from the oil tank due to vibration.
Preferably, movable casters are arranged below the supporting plate, so that the distribution transformer can be transported and carried conveniently.
Preferably, an iron core and a coil winding are installed inside the shell, wherein the iron core is formed by binding and stacking cold-rolled silicon steel sheets, no-load loss and no-load current can be greatly reduced, the iron core is bound, compactness of the iron core can be guaranteed, and noise is reduced.
Preferably, the iron core and the coil winding are subjected to vacuum drying treatment, so that moisture in the transformer can be reduced to the maximum extent.
Preferably, a top cover is arranged on the top of the shell, and a high-voltage sleeve and a low-voltage sleeve are arranged on the upper portion of the top cover.
The utility model discloses a beneficial effect lie in:
(1) the temperature and the oil mass in the oil tank can be monitored in real time, and the switch of the distribution transformer can be closed according to the temperature regulation cooling fan or the temperature and the oil mass, so that the damage to the three-phase oil-immersed distribution transformer caused by leakage of transformer oil or overhigh temperature in the oil tank can be avoided.
(2) The three-phase oil-immersed distribution transformer is convenient to transport, capable of absorbing shock and reducing noise, high in heat dissipation efficiency, energy-saving and environment-friendly.
Drawings
Fig. 1 is a schematic front view of embodiment 1 of the present invention;
fig. 2 is a schematic front view of embodiment 2 of the present invention;
in the figure: 1. a housing; 2. a top cover; 3. a high voltage bushing; 4. a low-pressure bushing; 5. a temperature sensor; 6. an oil level sensor; 7. a heat dissipating housing; 8. a heat radiation fan; 9. a shock absorber; 10. a support plate; 11. a movable caster.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
The embodiment provides a three-phase oil-immersed distribution transformer, as shown in fig. 1, an iron core and a coil winding are arranged inside a shell 1, the iron core is formed by stacking cold-rolled silicon steel sheets, a top cover 2 is arranged at the top of the shell 1, a high-voltage sleeve 3 and a low-voltage sleeve 4 are arranged outside the top cover 2, a temperature sensor 5 is arranged inside the top cover 2, an oil level sensor 6 is arranged on the inner side wall of the shell 1, the temperature sensor 5 and the oil level sensor 6 are both connected with a switch of the distribution transformer through a P L C controller, when the temperature sensor 5 detects that the temperature in an oil tank is higher than a preset value or the oil level sensor 6 detects that the temperature in the oil tank is lower than the preset value, the distribution transformer can be automatically closed through the P L C controller, damage to the distribution transformer due to overhigh temperature or overlow oil level is avoided, heat dissipation shells 7 are arranged on the left side wall and the right side wall outside the shell 1, heat dissipation shells 8 are arranged on the upper side and the lower side of the heat dissipation shells, the upper and the lower heat dissipation fans 8 are symmetrical with each other, the switch of the heat dissipation fan 8 is connected with the temperature sensor 5 through a P L C controller, when the temperature sensor 5 is higher than the temperature of the distribution transformer, the distribution transformer is detected, the temperature sensor, the temperature of the distribution transformer, the distribution transformer is detected by a heat dissipation fan 6, the heat dissipation fan 8, the heat dissipation temperature sensor, the heat dissipation oil tank, the distribution transformer, the.
Example 2
The present embodiment is different from embodiment 1 in that: as shown in fig. 2, movable casters 11 are provided under the pallet 10 to facilitate transportation and movement of the three-phase oil-filled distribution transformer. And simultaneously, the iron cores in the shell 1 are bound, so that the compactness of the iron cores is ensured, the mutual collision of the iron cores is avoided, and the noise is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The three-phase oil-immersed distribution transformer is characterized by comprising a shell (1), wherein a temperature sensor (5) is arranged in the shell (1); an oil level sensor (6) is arranged on the inner side wall of the shell (1), a heat dissipation shell (7) is arranged on one group of opposite outer side walls of the shell (1), heat dissipation fans (8) are arranged on the upper side and the lower side of the heat dissipation shell (7), and the other group of opposite outer side walls of the shell are corrugated sheets;
the temperature sensor (5), the oil level sensor (6), the heat dissipation fan (8) and the transformer switch are all electrically connected with a P L C controller;
a shock absorber (9) and a supporting plate (10) are arranged below the shell, and movable casters (11) are arranged below the supporting plate (10).
2. A three-phase oil filled distribution transformer according to claim 1, characterized in that the cooling fans (8) are symmetrical up and down.
3. The three-phase oil-immersed distribution transformer according to claim 1, wherein an iron core and a coil winding are arranged in the housing (1), wherein the iron core is formed by binding and stacking cold rolled silicon steel sheets.
4. A three-phase oil filled distribution transformer according to claim 3, wherein the core and coil windings are vacuum dried.
5. A three-phase oil-immersed distribution transformer according to claim 1, characterized in that a top cover (2) is arranged on top of the housing (1), and a high voltage bushing (3) and a low voltage bushing (4) are arranged on the top cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921600249.0U CN211016738U (en) | 2019-09-25 | 2019-09-25 | Three-phase oil-immersed distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921600249.0U CN211016738U (en) | 2019-09-25 | 2019-09-25 | Three-phase oil-immersed distribution transformer |
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| Publication Number | Publication Date |
|---|---|
| CN211016738U true CN211016738U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921600249.0U Active CN211016738U (en) | 2019-09-25 | 2019-09-25 | Three-phase oil-immersed distribution transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447363A (en) * | 2020-10-21 | 2021-03-05 | 国网山东省电力公司龙口市供电公司 | Oil-immersed three-phase transformer |
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2019
- 2019-09-25 CN CN201921600249.0U patent/CN211016738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447363A (en) * | 2020-10-21 | 2021-03-05 | 国网山东省电力公司龙口市供电公司 | Oil-immersed three-phase transformer |
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