CN113284711A

CN113284711A - Distribution transformer

Info

Publication number: CN113284711A
Application number: CN202110640699.8A
Authority: CN
Inventors: 沈宝春
Original assignee: Jiangsu Longchuang Electric Co ltd
Current assignee: Jiangsu Longchuang Electric Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-08-20
Anticipated expiration: 2041-06-09
Also published as: CN113284711B

Abstract

The invention discloses a distribution transformer, and belongs to the technical field of transformers. A distribution transformer comprising transformer apparatus, cooling apparatus, and further comprising: the loop pipes are arranged on the inner side and the outer side of the transformer equipment, and the output ends and the input ends of the loop pipes are connected with cooling equipment; the stirring assembly is connected in the transformer equipment; according to the invention, the return pipe is arranged outside the transformer equipment, the cooling equipment is used for discharging cooling liquid into the return pipe, so that the heat inside the transformer equipment is absorbed, the heat inside the transformer equipment is conducted to the outside of the transformer equipment, meanwhile, the piston cylinder is used for spraying water to the outer return pipe, the heat is radiated again, the cooling of the transformer oil is accelerated, and meanwhile, the stirring fan blades are matched for stirring the transformer oil, so that the transformer oil is fully contacted with the inner return pipe, the transformer is fully cooled, and the cooling effect and efficiency are improved.

Description

Distribution transformer

Technical Field

The invention relates to the technical field of transformers, in particular to a distribution transformer.

Background

The transformers are classified according to cooling mode: oil-immersed transformers and dry-type transformers; the oil immersed transformer is a novel high-performance transformer with more reasonable structure and better performance, takes oil as the main insulation means of the transformer and depends on the oil as a cooling medium; the main parts of the transformer comprise an iron core, a winding, an oil tank, an oil conservator, a respirator, a pressure relief valve, a radiator, an insulating sleeve, a tap switch, a gas relay, a thermometer, an oil purifier, an oil level indicator and the like.

The transformer can produce the heat at the during operation, make the transformer temperature rise, the corresponding transformer oil that can make inside heaies up, transformer oil can be ageing-accelerated after the intensification, take place rotten, and then reduce the cooling effect of transformer oil to the transformer, make transformer life reduce, current oil-immersed transformer radiating mode is mostly fin or fan and cools down, but most inside transformer oil is in quiescent condition, fin and fan can't accomplish fully to cool down transformer oil, lead to the cooling effect not good.

Disclosure of Invention

The invention aims to solve the problem that most of internal transformer oil is in a static state, and the cooling effect is poor because cooling fins and fans cannot fully cool the transformer oil.

In order to achieve the purpose, the invention adopts the following technical scheme:

a distribution transformer comprising transformer apparatus, cooling apparatus, and further comprising: the loop pipes are arranged on the inner side and the outer side of the transformer equipment, and the output ends and the input ends of the loop pipes are connected with cooling equipment; the stirring assembly is connected in the transformer equipment; the water tank is fixedly connected to the bottom of the transformer equipment; the protection box is fixedly connected above the transformer equipment; the piston cylinder is fixedly connected in the protection box, wherein a water inlet pipe and a water outlet pipe are fixedly connected to the piston cylinder, and one end of the water inlet pipe, which is far away from the piston cylinder, leads to the water tank; the spray head is fixedly connected to one end, far away from the piston cylinder, of the water outlet pipe, wherein the spray head faces towards the outer return pipe; and the motor is connected to the transformer equipment and is used for driving the stirring assembly and the piston cylinder to work.

In order to facilitate stirring of the transformer oil and driving of the piston cylinder to work, preferably, the stirring assembly comprises a rotating shaft and stirring fans, the rotating shaft is rotatably connected in the transformer equipment, the stirring fans are uniformly and fixedly connected to the rotating shaft, one end of the rotating shaft penetrates through the transformer equipment, and the rotating shaft and the output end of the motor are connected through a belt; the motor is in the protective housing, fixedly connected with bent axle in the pivot, sliding connection has the push rod in the piston cylinder, push rod one end is rotated and is connected on the bent axle.

In order to improve the flowing effect of the transformer oil, the stirring assemblies are further provided with four groups.

In order to protect the clip-shaped pipe, preferably, the transformer equipment is fixedly connected with a protective shell, the clip-shaped pipe is arranged outside the protective shell, and heat dissipation holes are formed in two sides of the protective shell.

In order to facilitate the recovery of water sprayed from the water tank, the bottom of the protective shell is fixedly connected with a communicating pipe, and one end of the communicating pipe, which is far away from the protective shell, is communicated into the water tank.

In order to improve the cooling effect of the transformer equipment, further, an integrated fan is fixedly connected to the protective shell.

In order to protect the transformer equipment, the top of the transformer equipment is fixedly connected with a fixing column, and one end of the fixing column is fixedly connected with a shielding cover.

In order to improve the cooling effect of the pipe coil, a downpipe is fixedly connected to the water tank, and one end of the downpipe, which is far away from the water tank, leads to one side of the shielding cover.

In order to prevent sundries from entering the water tank, a filter screen is fixedly connected to the shielding cover and corresponds to the downpipe.

In order to prevent sundries from blocking the water inlet end of the downpipe, the protective shell is fixedly connected with an air pipe and a set of integrated fans are arranged in the air pipe, one end, far away from the protective shell, of the air pipe is communicated with a shielding cover, and one end of the air pipe is located on one side of the filter screen.

Compared with the prior art, the invention provides a distribution transformer, which has the following beneficial effects:

1. this distribution transformer through the pipe that returns the shape at the transformer equipment inside and outside, makes the coolant liquid at the pipe mesocycle that returns, and the temperature of transformer oil in the transformer equipment is taken away to the lower coolant liquid of temperature, cools down transformer oil, and the stirring fan stirs in transformer oil simultaneously, makes transformer oil fully contact with the pipe that returns the shape, increases contact time and area, improves the cooling effect.

2. This distribution transformer collects the rainwater through sheltering from the lid, and water in the rethread piston section of thick bamboo extraction water tank sprays to the return venturi tube in the transformer equipment outside, cools down to returning the venturi tube, makes return venturi tube heat conduction effect better, and to the inside cooling of transformer equipment with higher speed, and then cools down to transformer oil, improves the life of transformer equipment and transformer oil, and the water that sprays can flow back into the water tank in, and then accomplishes bad circulation and use.

3. This distribution transformer blows exhaust wind to the filter screen through collecting integrated fan exhaust wind, will fall on the filter screen on debris blow off, prevents that the filter screen from being plugged up, causes the unable condition of collecting the rainwater, has ensured radiating effect and efficiency to transformer oil.

The parts which are not involved in the device are the same as or can be realized by adopting the prior art, the invention arranges the return pipe outside the transformer equipment, uses the cooling equipment to discharge cooling liquid into the return pipe, absorbs the heat inside the transformer equipment, conducts the heat inside the transformer equipment to the outside of the transformer equipment, sprays water to the outer return pipe through the piston cylinder, and dissipates heat again, thereby accelerating the cooling of the transformer oil, and simultaneously cooperates with the stirring fan blades to stir the transformer oil, so that the transformer oil is fully contacted with the inner return pipe, the transformer is fully cooled, and the cooling effect and efficiency are improved.

Drawings

Fig. 1 is a perspective view of a distribution transformer according to the present invention;

fig. 2 is a front view of a distribution transformer according to the present invention;

FIG. 3 is a front cross-sectional view of a distribution transformer apparatus in accordance with the present invention;

FIG. 4 is a top cross-sectional view of a distribution transformer apparatus in accordance with the present invention

Fig. 5 is a schematic structural diagram of a distribution transformer shown in fig. 4 according to the present invention;

fig. 6 is a schematic structural diagram of B in fig. 2 of a distribution transformer according to the present invention;

fig. 7 is a perspective view of a winding tube of a distribution transformer according to the present invention;

fig. 8 is a schematic structural diagram of an integrated fan of a distribution transformer according to the present invention.

In the figure: 1. a transformer device; 2. a protection box; 201. a motor; 202. a rotating shaft; 203. a stirring fan; 204. a belt; 3. a cooling device; 301. a pipe is returned; 4. a piston cylinder; 40. a crankshaft; 401. a push rod; 402. a water inlet pipe; 403. a water outlet pipe; 404. a spray head; 5. a shielding cover; 50. fixing a column; 501. a downpipe; 502. a water tank; 503. a filter screen; 6. a protective shell; 601. an integrated fan; 602. heat dissipation holes; 604. a communicating pipe; 605. and (7) an air pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1:

referring to fig. 1 to 8, a distribution transformer includes a transformer apparatus 1, a cooling apparatus 3, and further includes: the return tube 301 is arranged on the inner side and the outer side of the transformer device 1, and the output end and the input end of the return tube 301 are connected with the cooling device 3; the stirring assembly is connected in the transformer equipment 1; the water tank 502 is fixedly connected to the bottom of the transformer device 1; the protection box 2 is fixedly connected above the transformer equipment 1; the piston cylinder 4 is fixedly connected in the protection box 2, wherein the piston cylinder 4 is fixedly connected with a water inlet pipe 402 and a water outlet pipe 403, and one end of the water inlet pipe 402, which is far away from the piston cylinder 4, leads to the water tank 502; the spray head 404 is fixedly connected to one end of the water outlet pipe 403 far away from the piston cylinder 4, wherein the spray head 404 faces the outer return pipe 301; the motor 201 is connected to the transformer device 1, and the motor 201 is used for driving the stirring assembly and the piston cylinder 4 to work;

the cooling device 3 and the motor 201 are electrically connected with external control equipment;

the cooling liquid with the reduced temperature can be prepared in the cooling equipment 3, the prepared cooling liquid enters the loop-shaped pipe 301 through the input end of the loop-shaped pipe 301, the input end of the loop-shaped pipe is communicated with the transformer equipment 1, the cooling liquid with the lower temperature circularly flows in the loop-shaped pipe 301 and is contacted with the transformer oil in the transformer equipment 1, the temperature of the transformer oil is taken away, and the effect of reducing the temperature of the transformer oil is achieved;

meanwhile, the return pipes 301 are distributed on the inner side and the outer side of the transformer device 1, the return pipes 301 are fixedly connected to one side of the transformer device 1, the heat of transformer oil is taken away by the inner return pipes 301, the coolant with heat flows to the return pipes 301 on the outer side, and the return pipes 301 on the outer side quickly dissipate the heat to the air, so that the coolant with a large amount of heat is prevented from directly entering the cooling device 3, and the refrigeration load of the cooling device 3 is increased;

the material of the loop pipe 301 can be a material with good heat conductivity, such as copper;

meanwhile, by starting the motor 201, the motor 201 drives the stirring assembly to rotate in the transformer equipment 1, the transformer oil inside the transformer equipment 1 is stirred, the static transformer oil is converted into dynamic transformer oil, the static transformer oil is fully contacted with the loop pipe 301 by stirring the transformer oil, the contact time and the contact area of the transformer oil and the internal loop pipe 301 are increased by stirring, further more heat in the transformer oil can be taken away by cooling liquid in the loop pipe 301, the transformer oil is fully cooled, and the cooling effect and the cooling efficiency of the transformer oil are improved;

while adding a certain amount of water to the water tank 502; when the motor 201 works, the piston cylinder 4 is driven to work, the piston cylinder 4 pumps water in the water tank 502 through the water inlet pipe 402 and then sprays out from the spray head 404 through the water outlet pipe 403, and the spray head 404 can spray onto the circular pipe 301 outside the transformer device 1, so that the heat dissipation of the cooling liquid flowing in the circular pipe 301 outside is accelerated; the water inlet pipe 402 and the water outlet pipe 403 are both provided with one-way valves;

and the pipe 301 that appears just returns is inside and outside setting, can also carry out heat conduction to transformer equipment 1 is inside, and when heat derivation transformer equipment 1 was outside, through spraying of water, can accelerate the cooling to pipe 301 that appears that returns, accelerates the heat to give off simultaneously, improves the cooling effect to in the transformer equipment 1.

Example 2:

referring to fig. 3, 4 and 5, a distribution transformer, substantially the same as in example 1, further comprising: the stirring assembly comprises a rotating shaft 202 and stirring fans 203, the rotating shaft 202 is rotatably connected in the transformer equipment 1, the stirring fans 203 are uniformly and fixedly connected to the rotating shaft 202, one end of the rotating shaft 202 penetrates through the transformer equipment 1, and the rotating shaft 202 and the output end of the motor 201 are connected through a belt 204; the motor 201 is arranged in the protective box 2, the crankshaft 40 is fixedly connected to the rotating shaft 202, the push rod 401 is connected in the piston cylinder 4 in a sliding mode, and one end of the push rod 401 is rotatably connected to the crankshaft 40;

the motor 201 rotates to drive the rotating shaft 202 to rotate through the belt 204, and the rotating shaft 202 rotates to further drive the stirring fan 203 to stir the transformer oil in the transformer device 1;

meanwhile, the motor 201 rotates to drive the crankshaft 40 to rotate, the crankshaft 40 drives the push rod 401 to reciprocate in the piston cylinder 4, when the crankshaft 40 pulls the push rod 401, water in the water tank 502 is pumped into the piston cylinder 4 through the water inlet pipe 402, and when the crankshaft 40 pushes the push rod 401, the push rod 401 extrudes the water in the piston cylinder 4, so that the water enters the water outlet pipe 403;

motor 201 is fixed in guard box 2, and guard box 2 provides the protection for motor 201, and the convection hole has been seted up to guard box 2 simultaneously, provides the heat dissipation for motor 201.

Example 3:

referring to fig. 4, a distribution transformer, substantially the same as in embodiment 2, further comprising: four groups of stirring components are arranged;

four stirring subassemblies lead to all to link to each other through belt 204 and motor 201 output, and then rotate through motor 201, drive four stirring subassemblies and stir the transformer oil in transformer equipment 1 simultaneously, make transformer oil more lively, fully with the contact of the pipe 301 that appears that returns in the transformer equipment 1, improve cooling efficiency and the effect to transformer oil.

Example 4:

referring to fig. 1, 2 and 4, a distribution transformer, substantially the same as in example 1, further comprising: the transformer device 1 is fixedly connected with a protective shell 6, the outer-side loop pipe 301 is arranged in the protective shell 6, and heat dissipation holes 602 are formed in two sides of the protective shell 6;

through protective housing 6, can protect the time shape pipe 301 in the transformer equipment 1 outside, prevent that external force from damaging time shape pipe 301, or cause the fracture of time shape pipe 301, lead to the coolant liquid to leak, can't effectively cool down transformer oil, prevent simultaneously that bad weather from leading to the fact destruction to the outside time shape pipe 301, make protective housing 6 communicate with each other with the external world through louvre 602, make the outside time shape pipe 301 through louvre 602 dispel the heat.

Example 5:

referring to fig. 2, a distribution transformer, substantially the same as in embodiment 4, further comprising: the bottom of the protective shell 6 is fixedly connected with a communicating pipe 604, and one end of the communicating pipe 604, which is far away from the protective shell 6, is communicated into the water tank 502;

the rivers that shower nozzle 404 spun to the protective housing 6 bottom, can flow back into water tank 502 once more through communicating pipe 604 in, reach the used circulation, water economy resource effect.

Example 6:

referring to fig. 1, 4 and 8, a distribution transformer, substantially the same as in example 4, further comprising: an integrated fan 601 is fixedly connected to the protective shell 6;

the integrated fan 601 is electrically connected with external control equipment, and the integrated fan 601 is integrally designed as a driving source;

through integrated fan 601 circular telegram work, can be with returning outside the protective housing 6 of the quick discharge of heat that venturi tube 301 took out from transformer equipment 1 through integrated fan 601, prevent that the heat from piling up in protective housing 6, lead to the outside to return the heat in the coolant liquid that flows in venturi tube 301 and can't effectively dispel, increase cooling apparatus 3 work burden.

Example 7:

referring to fig. 1-2, a distribution transformer, substantially the same as in example 6, further comprising: the top of the transformer equipment 1 is fixedly connected with a fixed column 50, and one end of the fixed column 50 is fixedly connected with a shielding cover 5;

can protect transformer equipment 1 upper portion through sheltering from lid 5, shelter from sunshine simultaneously, prevent that the direct solar radiation from bringing transformer equipment 1's intensification.

Example 8:

referring to fig. 1-2, a distribution transformer, substantially the same as in example 7, further comprising: a downpipe 501 is fixedly connected to the water tank 502, and one end of the downpipe 501, which is far away from the water tank 502, leads to one side of the shielding cover 5;

rainwater can be collected through the downpipe 501, the rainwater falls on the shielding cover 5 during raining, and the top of the shielding cover 5 is arranged to be in a sharp-cornered shape, so that the rainwater can flow to two sides and then enter the water tank 502 through the downpipe 501;

through the setting of pipe in the water 501, can avoid artifical moisturizing often to water tank 502 in, improve the practicality.

Example 9:

referring to fig. 1-2, a distribution transformer, substantially the same as in example 7, further comprising: a filter screen 503 is fixedly connected to the shielding cover 5, and the filter screen 503 corresponds to the downpipe 501;

through filter screen 503, can block that debris from entering into downpipe 501, and then prevent that debris from entering into water tank 502, when causing inlet tube 402 to draw water, draw debris into in the piston cylinder 4.

Example 10:

referring to fig. 1, 2 and 4, a distribution transformer, substantially the same as in example 9, further comprising: an air pipe 605 is fixedly connected to the protective shell 6, a group of integrated fans 601 are arranged in the air pipe 605, one end, away from the protective shell 6, of the air pipe 605 is communicated to the shielding cover 5, and one end of the air pipe 605 is located on one side of the filter screen 503;

the integration fan 601 extracts the gas in the protective housing 6, discharges outside the protective housing 6, entangles one of them set of integration fan 601 through tuber pipe 605, collects exhaust wind, then blows the wind of collecting to filter screen 503, blows off remaining debris on the filter screen 503, prevents that filter screen 503 from being plugged up, causes the unable circumstances of collecting the rainwater, has ensured radiating effect and efficiency to transformer oil.

According to the invention, the return pipe 301 is arranged outside the transformer equipment 1, the cooling liquid is discharged into the return pipe 301 by using the cooling equipment 3, the heat inside the transformer equipment 1 is absorbed, the heat inside the transformer equipment 1 is conducted to the outside of the transformer equipment 1, meanwhile, the piston cylinder 4 is used for spraying water to the outer return pipe 301, the heat is radiated again, the cooling of the transformer oil is accelerated, and meanwhile, the stirring fan 203 is matched for stirring the transformer oil, so that the transformer oil is fully contacted with the inner return pipe 301, the transformer is fully cooled, and the cooling effect and efficiency are improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A distribution transformer comprising a transformer device (1), a cooling device (3), characterized by further comprising:

the return pipe (301) is arranged on the inner side and the outer side of the transformer device (1), and the output end and the input end of the return pipe (301) are connected with the cooling device (3);

the stirring assembly is connected in the transformer equipment (1);

the water tank (502) is fixedly connected to the bottom of the transformer device (1);

the protection box (2) is fixedly connected above the transformer equipment (1);

a piston cylinder (4) fixedly connected in the protection box (2),

a water inlet pipe (402) and a water outlet pipe (403) are fixedly connected to the piston cylinder (4), and one end, far away from the piston cylinder (4), of the water inlet pipe (402) leads to the water tank (502);

a spray head (404) fixedly connected with one end of the water outlet pipe (403) far away from the piston cylinder (4),

wherein the spray head (404) returns the tube (301) towards the outside;

and the motor (201) is connected to the transformer equipment (1), and the motor (201) is used for driving the stirring assembly and the piston cylinder (4) to work.

2. The distribution transformer according to claim 1, wherein the stirring assembly comprises a rotating shaft (202) and stirring fans (203), the rotating shaft (202) is rotatably connected in the transformer device (1), the stirring fans (203) are uniformly and fixedly connected to the rotating shaft (202), one end of the rotating shaft (202) penetrates through the transformer device (1), and the rotating shaft (202) and the output end of the motor (201) are connected through a belt (204); the motor (201) is in the protective box (2), fixedly connected with bent axle (40) on pivot (202), sliding connection has push rod (401) in piston cylinder (4), push rod (401) one end is rotated and is connected on bent axle (40).

3. The distribution transformer of claim 2, wherein there are four sets of said blending assemblies.

4. The distribution transformer according to claim 1, wherein a protective shell (6) is fixedly connected to the transformer device (1), the loop pipe (301) is arranged in the protective shell (6), and heat dissipation holes (602) are formed in two sides of the protective shell (6).

5. A distribution transformer according to claim 4, characterized in that a communicating pipe (604) is fixedly connected to the bottom of the protective shell (6), and one end of the communicating pipe (604) far away from the protective shell (6) leads into the water tank (502).

6. A distribution transformer according to claim 4, characterized in that an integrated fan (601) is fixedly connected to the protective casing (6).

7. A distribution transformer according to claim 6, characterized in that a fixed column (50) is fixedly connected to the top of the transformer device (1), and a shielding cover (5) is fixedly connected to one end of the fixed column (50).

8. A distribution transformer according to claim 7, characterized in that a downpipe (501) is fixedly connected to the tank (502), and an end of the downpipe (501) remote from the tank (502) opens into the side of the shielding cover (5).

9. The distribution transformer according to claim 8, wherein a filter screen (503) is fixedly connected to the shielding cover (5), and the filter screen (503) corresponds to the downpipe (501).

10. A distribution transformer according to claim 9, characterized in that an air duct (605) is fixedly connected to the protective casing (6), a set of said integrated fans (601) is arranged in the air duct (605), one end of the air duct (605) far from the protective casing (6) opens into the shielding cover (5), and one end of the air duct (605) is located at one side of the filter screen (503).