CN218730254U

CN218730254U - Transformer refrigeration cooling system

Info

Publication number: CN218730254U
Application number: CN202222449438.0U
Authority: CN
Inventors: 陈崇元
Original assignee: Hunan Qingke Zhixin Information Technology Co ltd; Wuhan Yilan Technology Co ltd
Current assignee: Hunan Qingke Zhixin Information Technology Co ltd; Wuhan Yilan Technology Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-03-24
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses a transformer refrigeration cooling system, which comprises a transformer and a variable frequency fan, wherein both ends of the variable frequency fan are respectively connected with a plurality of refrigeration units and cooling units; each refrigerating unit comprises a closed loop structure formed by a refrigerating compressor, a condenser and an evaporator which are sequentially connected through pipelines; a sealing mechanism is arranged outside the evaporator, and an inlet end and an outlet end of the sealing mechanism are respectively connected with an air inlet pipeline and an air outlet pipeline; the cooling unit is close to transformer one side including set up in the first pipeline and the second pipeline of transformer both sides are close to a plurality of blowhole has been seted up to equidistant respectively on first pipeline and the second pipeline. The utility model discloses a system is simple quick, also can realize the even cooling of transformer oil temperature when with air refrigeration drying, has better cooling effect, has application promotion prospect.

Description

Transformer refrigeration cooling system

Technical Field

The utility model relates to a transformer cooling technical field, concretely relates to transformer refrigeration cooling system.

Background

Transformers of electric power substations can generally only be installed in outdoor and open air environments due to their nature of operation. In summer high-temperature weather, the temperature of the transformer oil may rapidly rise due to sun exposure or peak load, so that great potential safety hazards are brought to the operation of the transformer.

At present, in order to reduce the oil temperature of a transformer, a blower is generally adopted to blow air to the transformer for cooling or ice blocks are placed around the transformer, so that time and labor are wasted, and a good cooling effect cannot be achieved; when a common air-conditioning cooling machine is used, the uniform cooling effect cannot be achieved due to too high ambient temperature and too large or too small air blowing.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that exists, the utility model provides a transformer refrigeration cooling system, the system is simple quick, also can realize the even cooling of transformer oil temperature with air refrigeration drying's while, has better cooling effect, has application promotion prospect.

The utility model provides a technical scheme as follows:

a transformer refrigeration cooling system comprises a transformer and a variable frequency fan, wherein two ends of the variable frequency fan are respectively connected with a plurality of refrigeration units and cooling units; each refrigerating unit comprises a closed loop structure formed by a refrigerating compressor, a condenser and an evaporator which are sequentially connected through pipelines; a sealing mechanism is arranged outside the evaporator, and an inlet end and an outlet end of the sealing mechanism are respectively connected with an air inlet pipeline and an air outlet pipeline; the cooling unit is close to transformer one side including set up in the first pipeline and the second pipeline of transformer both sides are close to a plurality of blowhole has been seted up to equidistant respectively on first pipeline and the second pipeline.

Preferably, still include the PLC controller, all be provided with temperature sensor on the inner wall in intake stack and air-out pipeline exit, the PLC controller respectively with temperature sensor and frequency conversion fan are connected.

Preferably, the refrigeration unit is provided with two, and each of the evaporators includes a first evaporator and a second evaporator connected in series.

Preferably, the outlet end of the sealing mechanism is arranged in a funnel shape, and the diameter of the outlet end of the sealing mechanism is gradually reduced along the length direction of the sealing mechanism.

Preferably, the diameter of the outlet end of the sealing mechanism is larger than that of the air outlet pipeline, and the air outlet pipeline is fixedly sleeved with the outlet end of the sealing mechanism.

Preferably, the sealing mechanism is internally coated with a heat insulation material, and the bottom surface of the sealing mechanism is provided with a plurality of drainage holes.

Preferably, a drain pipe is detachably connected to each drain hole.

Preferably, the drain pipe is arranged in an L shape.

Preferably, the blowing hole is detachably connected with a protective cover, and the protective cover is arranged in a hollow cylindrical shape.

The beneficial effects of the utility model are that:

1) The temperature sensors can rapidly measure the air temperature at the outlets of the air inlet pipeline and the air outlet pipeline, and the frequency and the rotating speed of the variable frequency fan are automatically adjusted in time through the PLC according to the temperature difference obtained by the two temperature sensors, so that the wind power of the cooling unit is controlled;

2) A plurality of refrigeration units are arranged, each refrigeration unit is provided with a plurality of evaporators, the temperature is gradually reduced, and the gas-liquid separation of air is rapidly realized;

3) The sealing mechanism is arranged to avoid the influence of external temperature on the evaporation and heat absorption of the evaporator, shorten the air cooling time and improve the cooling efficiency, and the heat insulation material arranged in the sealing mechanism is used for maintaining the temperature in the sealing mechanism and further improving the air cooling effect;

4) The L-shaped drain pipe is arranged, so that condensed water in the air can be discharged quickly, and the humidity of the air can be reduced in time;

5) The protection casing that sets up further guarantees that the accurate transformer of aiming at of cooling air bloies, realizes high efficiency cooling.

Drawings

Fig. 1 is a schematic diagram of the system structure of the present invention.

In the figure: 1. an air inlet pipeline; 2. a sealing mechanism; 3. a refrigeration unit; 301. a first evaporator; 302. a second evaporator; 303. a refrigeration compressor; 304. a condenser; 4. an air outlet pipeline; 5. a variable frequency fan; 6. a temperature reduction unit; 601. a first conduit; 602. a second conduit; 603. an air blowing hole; 7. a transformer; 8. a temperature sensor; 9. a drain pipe; 10. a shield.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

It should be noted that, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships indicated on the basis of the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Examples

As shown in fig. 1, a transformer refrigeration cooling system comprises a transformer 7 and a variable frequency fan 5, wherein two ends of the variable frequency fan 5 are respectively connected with two refrigeration units 3 and a cooling unit 6; each refrigeration unit 3 comprises a closed loop structure formed by a refrigeration compressor 303, a condenser 304 and an evaporator which are sequentially connected through pipelines; a sealing mechanism 2 is arranged outside the evaporator, and an inlet end and an outlet end of the sealing mechanism 2 are respectively connected with an air inlet pipeline 1 and an air outlet pipeline 4; the cooling unit 6 comprises a first pipeline 601 and a second pipeline 602 which are arranged on two sides of the transformer 7, and a plurality of air blowing holes 603 are respectively arranged on the first pipeline 601 and the second pipeline 602 which are close to one side of the transformer 7 at equal intervals.

As the further technical scheme of this embodiment, still include the PLC controller, all be provided with temperature sensor 8 on the inner wall in intake stack 1 and the 4 exits of air-out pipeline, the PLC controller respectively with temperature sensor 8 and frequency conversion fan 5 are connected, measure the air temperature in intake stack 1 and the exit of air-out pipeline 4 fast to frequency and the rotational speed of the timely automatically regulated frequency conversion fan 5 of difference in temperature through PLC according to the difference in temperature that two temperature sensor 8 reachd, and then the wind-force size of control cooling unit 6.

As a further technical solution of this embodiment, the refrigeration unit 3 is provided with two evaporators, each of the evaporators includes a first evaporator 301 and a second evaporator 302 connected in series, and the plurality of evaporators are arranged to gradually cool down, so as to rapidly realize gas-liquid separation of air.

Preferably, the exit end of sealing mechanism 2 sets up and is the infundibulate, and its diameter is followed sealing mechanism 2 length direction reduces gradually for the circulation speed of air realizes rapid cooling.

As a further technical scheme of this embodiment, the diameter of sealing mechanism 2's exit end is greater than the diameter of air-out pipeline 4, air-out pipeline 4 with sealing mechanism 2's exit end cup joints fixedly, and the cold wind after the drying of being convenient for gets into frequency conversion fan 5 through air-out pipeline 4, prevents that the cold wind after the drying from overflowing and can't reach better cooling effect.

As a further technical scheme of this embodiment, the sealing mechanism 2 is coated with a thermal insulation material, two drain holes are formed in the bottom surface of the sealing mechanism 2, a drain pipe 9 is detachably connected to each drain hole, the drain pipe 9 is L-shaped, so that condensed water in the air can be drained quickly, and the humidity of the air can be reduced in time.

As a further technical scheme of this embodiment, the protection casing 10 can be dismantled and be connected to blowhole 603 department, the protection casing 10 sets up and is hollow circular cylinder shape, further guarantees that the accurate transformer 7 of aiming at of cooling air bloies, realizes high efficiency cooling.

The utility model discloses an actual operation flow as follows:

1) And (3) refrigerating operation: the refrigerant absorbs heat in the evaporator and is vaporized into low-temperature low-pressure steam, the low-temperature low-pressure steam from the evaporator is sucked by the refrigeration compressor and is compressed into high-pressure high-temperature steam to be sent into the condenser, the air in the condenser releases heat and is condensed into high-pressure liquid, the high-pressure liquid is throttled by the throttle valve to become low-pressure liquid, namely the refrigerant, and the low-pressure liquid is sent into the evaporator again to absorb heat and be vaporized, and the refrigeration cycle is repeatedly realized. The refrigeration operation is provided with a plurality of refrigeration units, namely, air entering from an air inlet pipeline sequentially passes through a plurality of evaporators, and the air entering from the air inlet pipeline is gradually cooled through a first stage and a second stage under the action of a refrigeration compressor and a condenser; meanwhile, part of gas in the air is converted into liquid, the liquid is discharged from the drain pipe through the drain hole, the air humidity is reduced, dry cold air is obtained, and good air refrigeration and subsequent cooling effects are achieved.

2) Cooling operation: dry air obtained through the refrigeration operation is sent into the variable frequency fan through the air outlet pipeline, according to the difference between the temperatures of air coming in from the air inlet pipeline and air coming out from the air outlet pipeline, which is measured by the temperature sensors arranged on the inner walls of the outlet pipeline and the outlet pipeline, the frequency and the rotating speed of the variable frequency fan are changed so as to control the wind power, and then the wind quantity transmitted to the cooling unit is controlled, and the wind is uniformly blown to the transformer through the wind blowing holes formed in the first pipeline and the second pipeline, so that the transformer is rapidly cooled.

The utility model discloses a refrigeration cooling system can be fast with air cooling more than 10 ℃, the air with the cooling is bloied the transformer, the transformer oil temperature just can drop very fast, also can realize evenly cooling simultaneously for whole refrigeration cooling system reaches better cooling effect, and can practice thrift cost and resource, has application and popularization prospect.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and all the modifications and improvements made by those skilled in the art without departing from the principles and spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A transformer refrigeration cooling system comprises a transformer (7) and a variable frequency fan (5), and is characterized in that,

two ends of the variable frequency fan (5) are respectively connected with a plurality of refrigerating units (3) and cooling units (6); each refrigerating unit (3) comprises a closed loop structure formed by a refrigerating compressor (303), a condenser (304) and an evaporator which are sequentially connected through pipelines; a sealing mechanism (2) is arranged outside the evaporator, and an inlet end and an outlet end of the sealing mechanism (2) are respectively connected with an air inlet pipeline (1) and an air outlet pipeline (4);

cooling unit (6) including set up in first pipeline (601) and second pipeline (602) of transformer (7) both sides are close to transformer (7) one side first pipeline (601) and second pipeline (602) go up respectively equidistant a plurality of blowhole (603) of having seted up.

2. The transformer refrigeration cooling system according to claim 1, further comprising a PLC controller, wherein temperature sensors (8) are disposed on inner walls of outlets of the air inlet pipeline (1) and the air outlet pipeline (4), and the PLC controller is connected with the temperature sensors (8) and the variable frequency fan (5) respectively.

3. A transformer refrigeration cooling system according to claim 1, characterized in that there are two of said refrigeration units (3), each of said evaporators comprising a first evaporator (301) and a second evaporator (302) connected in series.

4. The transformer refrigeration cooling system according to claim 1, wherein the outlet end of the sealing mechanism (2) is arranged in a funnel shape, and the diameter of the funnel shape is gradually reduced along the length direction of the sealing mechanism (2).

5. The transformer refrigeration cooling system according to claim 1, wherein the diameter of the outlet end of the sealing mechanism (2) is larger than the diameter of the air outlet pipeline (4), and the air outlet pipeline (4) is fixedly sleeved with the outlet end of the sealing mechanism (2).

6. The transformer refrigeration cooling system according to claim 1, wherein a heat insulating material is coated inside the sealing mechanism (2), and a plurality of drainage holes are formed in the bottom surface of the sealing mechanism (2).

7. The transformer refrigeration cooling system according to claim 6, wherein a drain pipe (9) is detachably connected to each drain hole.

8. The transformer refrigeration cooling system according to claim 7, wherein the drain pipe (9) is arranged in an L shape.

9. The transformer refrigeration cooling system according to claim 1, wherein a protective cover (10) is detachably connected to the air blowing hole (603), and the protective cover (10) is hollow and cylindrical.