CN210628042U

CN210628042U - Quick heat dissipation type oil-immersed transformer

Info

Publication number: CN210628042U
Application number: CN201921284570.2U
Authority: CN
Inventors: 赵安安; 宁洪涛; 张锐
Original assignee: Hubei Electric Group Co Ltd
Current assignee: Hubei Electric Group Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-05-26
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a quick heat dissipation type oil-immersed transformer, oil tank fixed mounting is on the base, is full of transformer oil in this oil tank, the iron core passes through support fixed mounting in the oil tank be provided with first spacing on the inside wall of first barrel, and first barrel is put in the iron core outside through first spacing fixed cover, the low pressure coil fixed cover is put in the first barrel outside be provided with the spacing of second on the inside wall of second barrel, and the second barrel is put in the low pressure coil outside through the spacing fixed cover of second, the high pressure coil fixed cover is put in the second barrel outside, high pressure input and low pressure output are respectively through high-voltage insulation sleeve and low pressure insulation sleeve fixed mounting on oil tank upper portion, the utility model discloses the advantage is: the heat dissipation effect and the heat dissipation speed are improved, the heat dissipation device is very suitable for the heat dissipation requirement of the transformer in a high-temperature environment, and the normal and stable operation of the transformer can be well guaranteed.

Description

Quick heat dissipation type oil-immersed transformer

Technical Field

The utility model relates to a technical field of transformer, more specifically say so and relate to oil-immersed transformer's technical field.

Background

The transformer is a static electrical device, which converts alternating current electric energy of one voltage grade into alternating current electric energy of another voltage grade by utilizing the principle of electromagnetic induction, the main function of the transformer in a power system is to convert voltage so as to be beneficial to power transmission, the transformer can be divided into a dry type transformer and an oil-immersed transformer according to a cooling mode, and an iron core and high and low voltage windings of the oil-immersed transformer are immersed in transformer oil relative to the dry type transformer, so that the oil-immersed transformer has a better heat dissipation effect. At present, the cooling mode adopted by common oil-immersed transformers on the market is mostly natural circulation cooling or natural circulation air-blowing cooling and the like, but the cooling effect is still not very ideal by adopting the cooling mode, the cooling mode cannot well adapt to the heat dissipation requirement under certain high-temperature working environments, and the normal and stable operation of the transformer cannot be well guaranteed. Although some transformers adopt a mode of forced oil circulation water cooling to have a good cooling effect at present, the structure is complex, the manufacturing cost is high, and the forced oil circulation water cooling type transformer is only suitable for large-capacity oil-immersed transformers.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving just not enough and providing one kind and can improve radiating effect and radiating efficiency by a wide margin, the transformer heat dissipation needs in the high temperature environment very is applicable to, can ensure the normal steady operation's of transformer quick heat dissipation type oil-immersed transformer well.

The utility model discloses a solve above-mentioned technical problem and the technical solution who adopts as follows:

the quick heat dissipation type oil-immersed transformer comprises a base, an oil tank, a sliding vane pump, an iron core, a high-voltage coil, a low-voltage coil, a first barrel, a second barrel, a negative-pressure fan, a water inlet pipe, an atomizing nozzle, a heat dissipation oil pipe, an oil cavity, a high-voltage input end, a low-voltage output end, a zero line copper bar, a temperature sensor, an electric valve and a controller, wherein the oil tank is fixedly arranged on the base, the oil tank is filled with transformer oil, the iron core is fixedly arranged in the oil tank through a support, a first limiting frame is arranged on the inner side wall of the first barrel, the first barrel is fixedly sleeved on the outer side of the iron core through the first limiting frame, the low-voltage coil is fixedly sleeved on the outer side of the first barrel, a second limiting frame is arranged on the inner side wall of the second barrel, the second barrel is fixedly sleeved on the outer side of the low-voltage coil through the second, the high-voltage input end and the low-voltage output end are fixedly arranged on the upper part of an oil tank respectively through a high-voltage insulating sleeve and a low-voltage insulating sleeve, the head end of the high-voltage coil is electrically connected with the tail end of the next high-voltage coil sequentially through a connecting rod, the high-voltage input end is electrically connected with the head end of the high-voltage coil respectively through a connecting lead, one end of the low-voltage coil is electrically connected with the low-voltage output end respectively, the two ends of the zero line copper bar are electrically connected with the other end of the low-voltage coil and the low-voltage output end respectively, the oil cavity is fixedly arranged on two sides of the oil tank, one end of the heat dissipation oil pipe is communicated with the oil cavity respectively, the other end of the heat dissipation oil pipe is communicated with the oil tank respectively, the sliding vane pump is fixedly, the utility model discloses a temperature sensor, including inlet tube, atomizing nozzle, motorised valve, temperature sensor, controller, temperature sensor, negative-pressure air fan, motorised valve and gleitbretter pump, inlet tube fixed mounting has seted up the delivery port corresponding with the heat dissipation oil pipe in the both sides of oil tank on the inlet tube, atomising nozzle fixed mounting is in the delivery port department of inlet tube respectively, the motorised valve is linked together with the end of intaking of inlet tube, temperature sensor is fixed to be worn to put in the oil tank, controller fixed mounting is on the oil tank.

It is still including conservator, respirator, oil level gaugember and explosion-proof pipe, conservator fixed mounting is on the upper portion of oil tank, and the conservator is linked together through pipeline and oil tank, and the intercommunication has gas relay on this pipeline, the tip at the conservator is installed to the oil level gaugember, the respirator is linked together through connecting pipe and conservator, explosion-proof pipe is linked together with oil tank and conservator respectively, has still seted up the draining port in the lower part of oil tank, and the intercommunication has the bleeder valve in this draining port department.

The negative pressure fan comprises a flow guide cover, a motor and fan blades, wherein the flow guide cover is fixedly arranged on the oil cavity, the motor is fixedly arranged in the flow guide cover, and the fan blades are fixedly arranged on an output shaft of the motor.

The controller is a PLC controller.

The utility model adopts the beneficial effect that above-mentioned technical solution can reach is: the critical temperature value is set through the controller, the temperature of the transformer oil in the oil tank is monitored through the temperature sensor, when the temperature of the transformer oil reaches the critical value, the controller controls the sliding vane pump to be started, the transformer oil in the oil tank is pumped into the heat dissipation oil pipes, the electric valve is controlled to be started at the same time, tap water flows through the water inlet pipe and is atomized into fog drops through the atomizing nozzle to be sprayed out, the negative pressure fan is controlled to be started at the same time, air flow mixed with the fog drops passes through two sides of each heat dissipation oil pipe, the heat dissipation oil pipes are rapidly cooled, the sprayed fog drops can cool air flowing through the heat dissipation oil pipes, and meanwhile, the fog drops attached to the heat dissipation oil pipes can evaporate to take away a large amount of heat, so that the heat dissipation effect and the heat dissipation speed are greatly improved, the device is very suitable for the heat dissipation requirement of the transformer in, meanwhile, inside the oil tank, a first annular oil duct can be formed between the first barrel and the iron core through the first barrel, and a second annular oil duct can be formed between the second barrel and the low-voltage coil through the second barrel, so that the heat dissipation effect is further improved, and the oil-immersed transformer is simple and compact in structure and low in manufacturing cost.

Drawings

FIG. 1 is a schematic structural view of the present invention without a negative pressure fan;

fig. 2 is a left side sectional view of the present invention shown in fig. 1;

FIG. 3 is a partial front cross-sectional view of FIG. 1;

FIG. 4 is a partial rear cross-sectional view of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 2 at A;

fig. 6 is a top cross-sectional view of the high voltage coil and the low voltage coil.

Detailed Description

As shown in fig. 1 and 2, the fast heat dissipation oil-immersed transformer includes a base 1, an oil tank 2, a sliding vane pump 3, an iron core 4, a high voltage coil 5, a low voltage coil 6, a first cylinder 7, a second cylinder 8, a negative pressure fan, a water inlet pipe 10, an atomizing nozzle 11, a heat dissipation oil pipe 12, an oil cavity 13, a high voltage input end 14, a low voltage output end 15, a zero line copper bar 16, a temperature sensor 17, an electric valve 18, a controller 19, an oil conservator 20, a breather 21, an oil level gauge 22 and an explosion-proof pipe 23, wherein the oil tank 2 is fixedly installed on the base 1, the oil tank 2 is filled with transformer oil, the iron core 4 is fixedly installed in the oil tank 2 through a support 24, as shown in fig. 5 and 6, a first limit frame 25 is arranged on an inner side wall of the first cylinder 7, the first cylinder 7 is fixedly sleeved outside the iron core 4 through the first limit frame 25, the low voltage coil 6 is fixedly sleeved outside the first cylinder 7, and a second limiting frame 26 is arranged on the inner side wall of the second barrel 8, the second barrel 8 is fixedly sleeved outside the low-voltage coil 6 through the second limiting frame 26, and the high-voltage coil 5 is fixedly sleeved outside the second barrel 8. As shown in fig. 3 and 4, the high-voltage input end 14 and the low-voltage output end 15 are respectively and fixedly mounted on the upper portion of the oil tank 2 through a high-voltage insulating sleeve 27 and a low-voltage insulating sleeve 28, the head end 29 of the high-voltage coil 5 is electrically connected with the tail end 31 of the next high-voltage coil 5 sequentially through a coupling rod 30, the high-voltage input end 14 is electrically connected with the head end 29 of the high-voltage coil 5 through a connecting wire 32, one end 33 of the low-voltage coil 6 is electrically connected with the low-voltage output end 15, and two ends of the zero line copper bar 16 are electrically connected with the other end 34. Oil pocket 13 is through first support 35 fixed mounting in the both sides of oil tank 2, the one end of heat dissipation oil pipe 12 is linked together with oil pocket 13 respectively, and the other end of heat dissipation oil pipe 12 is linked together with oil tank 2 respectively, 3 fixed mounting of gleitbretter pump are on base 1, and the oil inlet 36 of gleitbretter pump 3 is linked together with oil tank 2, and the oil-out 37 of gleitbretter pump 3 is linked together with oil pocket 13, negative-pressure air fan fixed mounting is on oil pocket 13, and this negative-pressure air fan is corresponding with heat dissipation oil pipe 12, and negative-pressure air fan's structure and with the erection joint relation of: the negative pressure fan comprises a flow guide cover 9, a motor 38 and fan blades 39, wherein the flow guide cover 9 is fixedly installed on the oil cavity 13, the motor 38 is fixedly installed in the flow guide cover 9 through a third support 40, and the fan blades 39 are fixedly installed on an output shaft of the motor 38. The water inlet pipe 10 is fixedly arranged at two sides of the oil tank 2 through a second bracket 41, a water outlet corresponding to the heat radiation oil pipe 12 is arranged on the water inlet pipe 10, the atomizing nozzles 11 are respectively and fixedly arranged at the water outlet of the water inlet pipe 10, the electric valve 18 is communicated with the water inlet end of the water inlet pipe 10, temperature sensor 17 is fixed to be worn to put in

oil tank

2, 19 fixed mounting of controller on oil tank 2, controller 2 respectively with temperature sensor 17, negative-pressure air fan's motor 38, motorised valve 18 and gleitbretter pump 3 electricity be connected, PLC controller can be chooseed for use to controller 19, the utility model relates to an each part all can directly purchase from the market and obtain, and controller 2 and temperature sensor 17, motor 38, motorised valve 18 and gleitbretter pump 3's electric connection relation and PLC control program are the common general knowledge in this field, and the details need not be here. The oil conservator 20 is fixedly installed on the upper portion of the oil tank 2 through a fourth support 42, the oil conservator 20 is communicated with the oil tank 2 through a pipeline 43, a gas relay 44 is communicated on the pipeline 43, the oil level indicator 22 is installed at the end portion of the oil conservator 20, the breather 21 is communicated with the oil conservator 20 through a connecting pipe 45, the explosion-proof pipe 23 is respectively communicated with the oil tank 2 and the oil conservator 20, an oil drainage port 46 is further formed in the lower portion of the oil tank 2, and an oil drainage valve 47 is communicated with the oil drainage port 46.

The working principle of the quick heat dissipation type oil-immersed transformer is as follows: the water inlet pipe 10 is communicated with a tap water source through the electric valve 18, a critical temperature value is set through the controller 19, the temperature of transformer oil in the oil tank 2 is monitored through the temperature sensor 17, when the temperature of the transformer oil reaches a critical value, the sliding vane pump 3 is controlled to be started through the controller 19, the transformer oil in the oil tank 2 is pumped into the heat dissipation oil pipe 12, the electric valve 18 is controlled to be opened, tap water flows through the water inlet pipe 10 and is atomized into fog drops through the atomizing nozzle 11 to be sprayed out, meanwhile, the negative pressure fan is controlled to be started, air flow with the fog drops passes through the two sides of each heat dissipation oil pipe 12, the heat dissipation oil pipes 12 are rapidly cooled, and the cooled transformer oil flows back into the oil tank 2 again. Meanwhile, inside the oil tank 12, a first annular oil passage 48 may be formed between the first cylinder 7 and the iron core 4 through the first cylinder 7, and a second annular oil passage 49 may be formed between the second cylinder 8 and the low-voltage coil 6 through the second cylinder 8, thereby further improving the heat dissipation effect.

Claims

1. Quick heat dissipation type oil-immersed transformer, its characterized in that: it is including base, oil tank, gleitbretter pump, iron core, high-voltage coil, low-voltage coil, first barrel, second barrel, negative-pressure air fan, inlet tube, atomizing nozzle, heat dissipation oil pipe, oil pocket, high pressure input end, low pressure output end, zero line copper bar, temperature sensor, motorised valve and controller, oil tank fixed mounting is on the base, and this oil tank is internal to be full of transformer oil, the iron core passes through support fixed mounting in the oil tank be provided with first spacing on the inside wall of first barrel, first barrel is put in the iron core outside through first spacing fixed cover, the fixed cover of low-voltage coil is put in the first barrel outside be provided with the spacing of second on the inside wall of second barrel, and the second barrel is put in the low-voltage coil outside through the fixed cover of second spacing, the fixed cover of high-voltage coil is put in the second barrel outside, high-voltage input end and low-voltage output end are respectively through high-voltage insulation sleeve and low-voltage insulation sleeve fixed mounting in The head end of the high-voltage coil is electrically connected with the tail end of the next high-voltage coil sequentially through a connecting rod, the high-voltage input end is electrically connected with the head end of the high-voltage coil respectively through a connecting wire, one end of the low-voltage coil is electrically connected with the low-voltage output end respectively, two ends of the zero line copper bar are electrically connected with the other end of the low-voltage coil and the low-voltage output end respectively, the oil cavity is fixedly installed on two sides of the oil tank, one end of the heat dissipation oil pipe is communicated with the oil cavity respectively, the other end of the heat dissipation oil pipe is communicated with the oil tank respectively, the sliding vane pump is fixedly installed on the base, an oil inlet of the sliding vane pump is communicated with the oil tank, an oil outlet of the sliding vane pump is communicated with the oil cavity, the negative pressure fan is fixedly installed on the, atomizing nozzle fixed mounting is in the delivery port department of inlet tube respectively, the motorised valve is linked together with the end of intaking of inlet tube, temperature sensor is fixed to be worn to put in the oil tank, controller fixed mounting is on the oil tank, and the controller is connected with temperature sensor, negative-pressure air fan, motorised valve and gleitbretter pump electricity respectively.

2. The fast heat dissipation oil-filled transformer according to claim 1, wherein: it is still including conservator, respirator, oil level gaugember and explosion-proof pipe, conservator fixed mounting is on the upper portion of oil tank, and the conservator is linked together through pipeline and oil tank, and the intercommunication has gas relay on this pipeline, the tip at the conservator is installed to the oil level gaugember, the respirator is linked together through connecting pipe and conservator, explosion-proof pipe is linked together with oil tank and conservator respectively, has still seted up the draining port in the lower part of oil tank, and the intercommunication has the bleeder valve in this draining port department.

3. The oil-filled transformer of claim 1 or 2, wherein: the negative pressure fan comprises a flow guide cover, a motor and fan blades, wherein the flow guide cover is fixedly arranged on the oil cavity, the motor is fixedly arranged in the flow guide cover, and the fan blades are fixedly arranged on an output shaft of the motor.

4. The oil-filled transformer of claim 1 or 2, wherein: the controller is a PLC controller.