CN111341528A - Explosion-proof oil-immersed transformer - Google Patents
Explosion-proof oil-immersed transformer Download PDFInfo
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- CN111341528A CN111341528A CN202010290817.2A CN202010290817A CN111341528A CN 111341528 A CN111341528 A CN 111341528A CN 202010290817 A CN202010290817 A CN 202010290817A CN 111341528 A CN111341528 A CN 111341528A
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- Prior art keywords
- oil
- buffer
- shell
- immersed transformer
- explosion
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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
- H01F27/02—Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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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
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses an explosion-proof oil-immersed transformer, which comprises: the oil immersed transformer comprises an oil immersed transformer shell, wherein an oil conservator is fixed on the oil immersed transformer shell; the oil conservator is communicated with the oil-immersed transformer shell through an oil inlet pipe and an oil outlet pipe; the oil inlet pipe and the oil outlet pipe are both connected with a one-way valve; the oil inlet pipe is connected in series with a filtering component, and the oil-immersed transformer shell is fixedly connected with a buffer device. According to the invention, the oil conservator is matched with the oil immersed transformer shell, so that the phenomenon that the tap switch is burnt out due to the exposure of the tap switch caused by the reduction of the oil level is reduced. The filter assembly filters magazines and sediments, and the service life is prolonged. The buffer device reduces the rigid impact of the oil-immersed transformer caused by working vibration and reduces the phenomenon of damage of the oil-immersed transformer.
Description
Technical Field
The invention relates to a transformer, in particular to an explosion-proof oil-immersed transformer.
Background
Oil-immersed transformer often is exactly totally closed box, and the product meets the condition of day heat or load and can appear expanding with heat and contracting with cold box inflation back, leads to the oil level in the box to descend and appear tap changer and expose in the outside of oil, leads to the phenomenon that decomposition switch burns out.
Meanwhile, impurities and precipitates can appear in the internal oil for a long time for the oil-immersed transformer, so that the service life of the transformer is influenced.
In the prior art, all oil-immersed transformers are directly fixedly connected, and when local vibration occurs outside or the oil-immersed transformers work and vibrate, the oil-immersed transformers are subjected to rigid impact, and the phenomenon that the oil-immersed transformers are damaged can occur after a long time.
Disclosure of Invention
The invention aims to provide an explosion-proof oil-immersed transformer which can effectively solve the technical problems.
In order to achieve the purpose of the invention, the following technical scheme is adopted: an explosion-proof oil-filled transformer comprising: the oil immersed transformer comprises an oil immersed transformer shell, wherein an oil conservator is fixed on the oil immersed transformer shell; the oil conservator is communicated with the oil-immersed transformer shell through an oil inlet pipe and an oil outlet pipe; the oil inlet pipe and the oil outlet pipe are both connected with a one-way valve; the oil inlet pipe is connected in series with a filtering component, and the oil-immersed transformer shell is fixedly connected with a buffer device.
Preferably, the filter assembly comprises: the filter shell is connected with the oil inlet pipe in series and is provided with a filter cavity; a rotating column is rotationally arranged in the filter cavity and provided with two liquid inlets communicated with the oil inlet pipe, and the two liquid inlets are coaxially arranged; a filter screen is arranged between the two liquid inlets, the filter screen is provided with a guide part, and the filter screen is provided with a slide block part matched with the rotating column; the filter cavity is sealed by a sealing plate; the sealing plate is provided with a locking groove matched with the guide part.
Preferably, the filter screen is provided with a residue chamber, said filter screen being provided with a rotating portion.
Preferably, the buffering means comprises: the buffer device comprises a first buffer component and a second buffer component; the first buffer component is provided with a buffer shell; the buffer shell is internally provided with a buffer block in a sliding mode, the buffer block is fixedly connected with the oil-immersed transformer shell, and a first spring is arranged between the buffer block and the buffer shell.
Preferably, the buffer block is provided with two limiting parts, and the buffer shell is provided with a buffer groove matched with the limiting parts; a rectangular shell is arranged right above the limiting part and is sealed through a cover plate; two locking blocks are slidably arranged between the rectangular shell and the cover plate, and the locking blocks penetrate through the cover plate to be provided with two pressing parts; the buffer shell is provided with a plurality of rectangular grooves matched with the locking blocks, and the rectangular grooves are arranged along the length direction of the buffer groove; a second spring is arranged between the two locking blocks.
Preferably, the second damping assembly comprises: the positioning plate is fixed on the lower surface of the buffering shell and fixedly connected with a limiting plate, a ball body is rotatably arranged between the positioning plate and the limiting plate, the ball body penetrates through the limiting plate to be matched with a resetting plate, the resetting plate is provided with an annular rib, and a plurality of tension springs are connected between the annular rib and the limiting plate.
Preferably, the oil-filled transformer housing is provided with cooling fins.
Preferably, a pressure induction lamp is fixed on the oil-immersed transformer shell.
Preferably, the conservator is fixed with an oil level display block.
Compared with the prior art, the invention has the following beneficial effects:
1. the oil conservator is matched with the shell of the oil immersed transformer, so that the phenomenon that the tap switch is burnt out due to exposure of the tap switch caused by oil level reduction is reduced. The filter assembly filters magazines and sediments, and the service life is prolonged. The buffer device reduces the rigid impact of the oil-immersed transformer caused by working vibration and reduces the phenomenon of damage of the oil-immersed transformer.
2. The pressure induction lamp is convenient for detect the pressure inside the oil-immersed transformer shell, and the use safety of the product is improved.
3. The oil level display block detects the height of the oil level in the oil conservator and the oil immersed transformer in real time, and the service life of the product is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.
Fig. 1 is a schematic view of the overall structure of an explosion-proof oil-immersed transformer in the embodiment of the invention;
FIG. 2 is a partially enlarged view of the position A of the explosion-proof oil-immersed transformer in the embodiment of the invention;
FIG. 3 is a partial schematic view of an explosion-proof oil-immersed transformer according to an embodiment of the invention;
FIG. 4 is an exploded view of an explosion proof oil immersed transformer filter assembly according to an embodiment of the present invention;
fig. 5 is an exploded view of the overall structure of the buffer device of the explosion-proof oil-immersed transformer in the embodiment of the invention.
Description of the figures
1. The oil immersed transformer comprises an oil immersed transformer shell 2, an oil conservator 3, an oil inlet pipe 4, an oil outlet pipe 5, a filter shell 6, a filter cavity 7, a rotary column 8, a liquid inlet 9, a filter screen 10, a guide portion 11, a sliding block portion 12, a sealing plate 13, a locking groove 14, a residue cavity 15, a rotating portion 16, a buffer shell 17, a buffer block 19, a first spring 21, a buffer groove 22, a rectangular shell 23, a cover plate 24, a locking block 25, a rectangular groove 26, a second spring 27, a positioning plate 28, a limiting plate 29, a ball 30, a reset plate 31, a tension spring 32, a cooling fin 33, a pressure sensing lamp 34 and an oil level display block.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, an explosion-proof oil-immersed transformer includes: the oil-immersed transformer shell 1, oil-immersed transformer shell 1 is equipped with fin 32, and fin 32 reduces the temperature of oil-immersed transformer during operation. An oil conservator 2 is fixed on the oil immersed transformer shell 1, and the oil conservator 2 is communicated with the oil immersed transformer shell 1 through an oil inlet pipe 3 and an oil outlet pipe 4.
The oil inlet pipe 3 and the oil outlet pipe 4 are both connected in series with a one-way valve, and when the oil-immersed transformer shell 1 expands, oil in the oil conservator 2 is transported into the oil-immersed transformer shell 1 from the one-way valve through the oil inlet pipe 3. When the oil-immersed transformer shell 1 is cooled and retracted, oil in the oil-immersed transformer shell 1 moves into the oil conservator 2 from the one-way valve.
The conservator 2 is fixedly connected with an oil level display block 34, and the oil level display block 34 is preferably made of transparent materials, so that the height of the oil level in the conservator 2 can be conveniently observed.
As shown in fig. 1, 2 and 4, the oil inlet pipe 3 is also connected in series with a filter assembly, and the filter assembly includes: and the filtering shell 5 is connected with the oil inlet pipe 3 in series, and the filtering shell 5 is provided with a filtering cavity 6. A rotating column 7 is arranged in the filter cavity 6 in a rotating way, the rotating column 7 is provided with two liquid inlets 8 communicated with the oil inlet pipe 3, and the two liquid inlets 8 are coaxially arranged.
A filter screen 9 is arranged between the two liquid inlets 8, and a residue cavity 14 is arranged on the filter screen 9. The filter screen 9 is provided with a sliding block part 1 matched with the rotating column 7, and the rotating column 7 is provided with a T-shaped groove matched with the sliding block part 11. When the sliding block part 11 is matched with the T-shaped groove, the rotary column 7 and the filter screen 9 move synchronously, and the filter cavity 6 is sealed by a sealing plate 12.
The filter screen 9 is provided with a guide part 10, and the sealing plate 12 is provided with a locking groove 13 matched with the guide part 10, wherein the locking groove 13 is a 90-degree annular groove. When the guide portion 10 is disengaged from the locking groove 13, the filter net 9 can be taken out. When the guide part 10 rotates 90 degrees in the locking groove 13, the filter screen 9 is in a working state, and the filter screen 9 starts to filter impurities and sediments. The filter screen 9 is equipped with a rotating part 15, and rotating part 15 drives the filter screen 9 rotatory, and the filter screen 9 drives the column spinner 7 rotatory.
A pressure induction lamp 33 is fixed on the oil-immersed transformer shell 1. When filter screen 9 blockked up, 1 internal pressure of oil-immersed transformer shell can grow, and forced induction lamp 33 scintillation reminds the staff in time to change filter screen 9.
As shown in fig. 1 and 5, the damper device includes: a first cushioning member having a cushioning shell 16, and a second cushioning member. A buffer block 17 is arranged in the buffer shell 16 in a sliding mode, and the buffer block 17 is fixedly connected with the oil-immersed transformer shell 1.
The buffer block 17 is provided with two limiting parts, and the buffer shell 16 is provided with a buffer groove 21 matched with the limiting parts. A rectangular shell 22 is arranged right above the limiting part, the rectangular shell 22 is provided with two moving parts, and the buffer block 17 is provided with a moving groove matched with the moving parts. Rectangular shell 22 is sealed through apron 23, and the slip is equipped with two locking piece 24 between rectangular shell 22 and the apron 23, and locking piece 24 passes apron 23 and is equipped with two according to the splenium.
The buffer housing 16 is provided with a plurality of rectangular grooves 25 engaged with the locking blocks 24, and the plurality of rectangular grooves 25 are provided along the length direction of the buffer groove 21. A second spring 26 is disposed between two locking blocks 24, and the second spring 26 facilitates the locking of two locking blocks 24.
A first spring 19 is arranged between the buffer block 17 and the buffer shell 16. The length of the compressed first spring 19 is adjusted by adjusting the locking height of the locking block 24 and the rectangular groove 25, so that the oil-immersed transformers with different weights are matched.
As shown in fig. 3 and 5, the second buffer assembly includes: a positioning plate 27 fixed on the lower surface of the buffer shell 16, and a limiting plate 28 fixedly connected with the positioning plate 27. A ball 29 is rotatably arranged between the positioning plate 27 and the limiting plate 28, and the ball 29 penetrates through the limiting plate 28 to be matched with a resetting plate 30. The retainer plate 27 and the retainer plate 28 position the ball 29, and the ball 29 is in clearance fit with the retainer plate 27 and the retainer plate 28.
The reset plate 30 is provided with a ring rib, a plurality of tension springs 31 are connected between the ring rib and the limit plate 28, and the tension springs 31 facilitate the buffer shell 16 to return to the initial position. The sphere 29 reduces friction, so that the buffer shell 16 can drive the oil-immersed transformer to return to an initial position, and damage to the transformer caused by vibration is reduced.
As shown in fig. 1 to 5, in operation, a technician places the oil-immersed transformer on the buffer block 17, and presses the locking block 24 to drive the locking block 24 to separate from the rectangular groove 25. Drive rectangular shell 22 along buffer slot 21 remove to with spacing portion contact, realize the locking through the cooperation of locking piece 24 and rectangular channel 25.
When the pressure induction lamp 33 is lighted, the filter screen 9 is blocked, the guide part 10 is driven to be separated from the locking groove 13 by rotating the filter screen 9, and the rotary column 7 is driven to rotate by the filter screen 9. Two liquid inlets 8 of the rotary column 7 stop contacting with the oil inlet pipe 3, and oil stops entering the oil-immersed transformer shell 1, and the filter screen 9 is replaced.
After the filter screen 9 is replaced, the sliding block part 11 of the filter screen 9 is matched with the rotary column 7, the guide part 10 is driven to be matched with the locking groove 13, and the filter screen 9 is locked by rotating 90 degrees. After the locking is completed, the filter screen 9 starts to work. The pressure inside the oil-immersed transformer shell 1 returns to normal, and the pressure induction lamp 33 is extinguished. After the oil immersed transformer works for a period of time, the oil will drop, and the oil conservator 2 and the oil in the oil immersed transformer are observed through the oil level display block 34.
When the oil-immersed transformer vibrates in working or the oil-immersed transformer vibrates due to external factors, the first buffer assembly and the second buffer assembly start to work.
When the first buffer assembly works, the oil-immersed transformer compresses the first spring 19 through the buffer block 17, and the first spring 19 drives the buffer block 17 to be in contact with the rectangular shell 22, so that the rigid impact in the vertical direction among all parts of the oil-immersed transformer is reduced.
When the second buffer assembly works, the ball 29 drives the buffer plate to be matched with the reset plate 30, and the buffer plate returns to the initial position under the action of the tension spring 31, so that the rigidity impact between each part of the oil-immersed transformer in the transverse direction and the longitudinal direction is reduced.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (9)
1. An explosion-proof oil-filled transformer comprising: the oil immersed transformer is characterized in that an oil conservator is fixed on the oil immersed transformer shell; the oil conservator is communicated with the oil-immersed transformer shell through an oil inlet pipe and an oil outlet pipe; the oil inlet pipe and the oil outlet pipe are both connected with a one-way valve; the oil inlet pipe is connected in series with a filtering component, and the oil-immersed transformer shell is fixedly connected with a buffer device.
2. The explosion-proof oil-filled transformer of claim 1, wherein the filter assembly comprises: the filter shell is connected with the oil inlet pipe in series and is provided with a filter cavity; a rotating column is rotationally arranged in the filter cavity and provided with two liquid inlets communicated with the oil inlet pipe, and the two liquid inlets are coaxially arranged; a filter screen is arranged between the two liquid inlets, the filter screen is provided with a guide part, and the filter screen is provided with a slide block part matched with the rotating column; the filter cavity is sealed by a sealing plate; the sealing plate is provided with a locking groove matched with the guide part.
3. An explosion-proof oil-filled transformer according to claim 2, wherein the filter screen is provided with a debris chamber and the filter screen is provided with a rotating part.
4. Explosion-proof oil-filled transformer according to claim 1, characterized in that the damping means comprise: the buffer device comprises a first buffer component and a second buffer component; the first buffer component is provided with a buffer shell; the buffer shell is internally provided with a buffer block in a sliding mode, the buffer block is fixedly connected with the oil-immersed transformer shell, and a first spring is arranged between the buffer block and the buffer shell.
5. The explosion-proof oil-immersed transformer according to claim 4, wherein the buffer block is provided with two limiting parts, and the buffer shell is provided with a buffer groove matched with the limiting parts; a rectangular shell is arranged right above the limiting part and is sealed through a cover plate; two locking blocks are slidably arranged between the rectangular shell and the cover plate, and the locking blocks penetrate through the cover plate to be provided with two pressing parts; the buffer shell is provided with a plurality of rectangular grooves matched with the locking blocks, and the rectangular grooves are arranged along the length direction of the buffer groove; a second spring is arranged between the two locking blocks.
6. The explosion-proof oil-filled transformer of claim 5, wherein the second buffer assembly comprises: the positioning plate is fixed on the lower surface of the buffering shell and fixedly connected with a limiting plate, a ball body is rotatably arranged between the positioning plate and the limiting plate, the ball body penetrates through the limiting plate to be matched with a resetting plate, the resetting plate is provided with an annular rib, and a plurality of tension springs are connected between the annular rib and the limiting plate.
7. Explosion-proof oil-filled transformer according to claim 1, characterized in that the oil-filled transformer housing is provided with cooling fins.
8. An explosion-proof oil filled transformer according to claim 1 wherein a pressure sensitive lamp is affixed to the oil filled transformer housing.
9. The explosion-proof oil-filled transformer of claim 1, wherein the conservator is fixed with an oil level display block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010290817.2A CN111341528A (en) | 2020-04-14 | 2020-04-14 | Explosion-proof oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010290817.2A CN111341528A (en) | 2020-04-14 | 2020-04-14 | Explosion-proof oil-immersed transformer |
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| Publication Number | Publication Date |
|---|---|
| CN111341528A true CN111341528A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010290817.2A Pending CN111341528A (en) | 2020-04-14 | 2020-04-14 | Explosion-proof oil-immersed transformer |
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| CN (1) | CN111341528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410025A (en) * | 2021-06-09 | 2021-09-17 | 江苏悦成变压器有限公司 | Oil-immersed transformer with explosion-proof protection architecture |
-
2020
- 2020-04-14 CN CN202010290817.2A patent/CN111341528A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410025A (en) * | 2021-06-09 | 2021-09-17 | 江苏悦成变压器有限公司 | Oil-immersed transformer with explosion-proof protection architecture |
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