CN216929381U

CN216929381U - Energy-saving SVG cooling system for wind power plant

Info

Publication number: CN216929381U
Application number: CN202220382930.8U
Authority: CN
Inventors: 苗会成; 王博; 周国强
Original assignee: Onoff Electric Co ltd
Current assignee: Onoff Electric Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-08
Anticipated expiration: 2032-02-23

Abstract

The utility model provides an energy-saving SVG cooling system applied to a wind power plant, belonging to the technical field of SVG heat dissipation and comprising an SVG equipment room, a heat exchanger and a standby ventilation hole; the heat exchanger is arranged on the outer side of the SVG equipment chamber, the heat exchanger is provided with an indoor air inlet pipe and an indoor air return pipe which are communicated with the SVG equipment chamber, and an indoor fan is arranged on the indoor air inlet pipe; the heat exchanger is also provided with an outdoor air inlet pipe and an outdoor air outlet pipe, the outdoor air inlet pipe is provided with a humidifier, and the outdoor air outlet pipe is provided with an outdoor fan; the indoor fan and the outdoor fan are both speed-regulating fans. According to the energy-saving SVG cooling system applied to the wind power plant, provided by the utility model, the internal circulation between air in the SVG equipment room and the heat exchanger is realized by virtue of the indoor fan, the dust accumulation and rainwater immersion in the SVG are reduced, and the safe, stable and efficient operation of power equipment is ensured; the rotating speed of the indoor fan and the rotating speed of the outdoor fan are both adjustable, and the energy-saving effect is achieved.

Description

Energy-saving SVG cooling system for wind power plant

Technical Field

The utility model belongs to the technical field of SVG heat dissipation, and particularly relates to an energy-saving SVG cooling system applied to a wind power plant.

Background

SVG equipment is the important reactive power regulating equipment in wind-powered electricity generation field, can solve the voltage deviation that wind-powered electricity generation field actual operation process leads to, voltage fluctuation and flickering scheduling problem, improve the electric wire netting point and insert into voltage quality, because wind turbine generator system operating characteristic is unstable, need SVG equipment to track the operation of dispatch voltage curve, it is big to cause SVG equipment automatically regulated reactive load to fluctuate, to the great wind-powered electricity generation field of capacity, often be in high load running state, in addition wind-powered electricity generation field booster station is mostly in the mountain area, the weather is abominable, cause SVG equipment module to generate heat, the trouble is frequent, seriously influence the safe operation in wind-powered electricity generation field.

The window of most SVG equipment at present all adopts the aluminum alloy shutter to filter, and fan forced draft heat dissipation does not have effectual dustproof rain-proof snow measure, and dampproofing rain-proof effect is relatively poor, and one to heavy rain weather shutter will appear leaking rain phenomenon. The core component of the SVG device is an electronic product, is sensitive to the environment, has high requirements on environment humidity and cleanliness, and is one of the factors causing high failure rate of the SVG due to overhigh environment humidity. The following conditions are easily caused due to the fact that the indoor negative pressure is very large when the SVG runs:

(1) dust is sucked into the power distribution room from a door and a window, so that the dust accumulation inside the equipment is serious;

(2) during sleet weather, sleet is inhaled and makes the interior moisture of equipment increase behind indoor, inhales in the power module cabinet, causes the internal insulation to reduce, buries down hidden danger for equipment safety and stability operation, leads to the risk of SVG equipment trouble to strengthen.

(3) The forced ventilation cooling fan runs for a long time, has huge energy consumption and is not beneficial to energy conservation.

(4) Maintenance costs will increase and equipment operating in harsh environments for long periods of time will frequently result in SVG tripping.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an energy-saving SVG cooling system applied to a wind power plant, and aims to solve the problem that the existing SVG equipment is poor in dustproof and moistureproof effects.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides an energy-saving SVG cooling system that wind-powered electricity generation field used, includes:

an SVG equipment room;

the heat exchanger is arranged on the outer side of the SVG equipment room, the heat exchanger is provided with an indoor air inlet pipe and an indoor air return pipe which are communicated with the SVG equipment room, and an indoor fan is arranged on the indoor air inlet pipe; the heat exchanger is also provided with an outdoor air inlet pipe and an outdoor air outlet pipe, the outdoor air inlet pipe is provided with a humidifier, and the outdoor air outlet pipe is provided with an outdoor fan; the indoor fan and the outdoor fan are both speed-regulating fans.

As another embodiment of the present application, the heat exchanger is a counter-flow heat exchanger, the counter-flow heat exchanger includes an inner channel and an outer channel arranged at intervals, and two ends of the inner channel are respectively communicated with the indoor air inlet pipe and the indoor air return pipe; and two ends of the outer side channel are respectively communicated with the outdoor air inlet pipe and the outdoor air outlet pipe.

As another embodiment of the application, a plurality of heat exchange plates which are stacked in parallel are arranged in the heat exchanger, the inner side channel or the outer side channel is formed between the adjacent heat exchange plates, and the inner side channel and the outer side channel are alternately arranged.

As another embodiment of the application, the surface of the heat exchange plate is provided with a reinforcing part, and the reinforcing part protrudes out of the surface of the heat exchange plate.

As another embodiment of the application, the thickness of the heat exchange plate is 0.1-0.2 mm.

As another embodiment of the present application, a shell is disposed outside the heat exchanger; the humidifier and the outdoor fan are both located inside the shell.

As another embodiment of the present application, a primary filter is further disposed in the casing, and the primary filter is located on the outdoor air inlet pipe on the side of the humidifier far away from the heat exchanger.

As another embodiment of the present application, the method further includes:

reserve ventilation hole is seted up in on the lateral wall of SVG equipment room, reserve ventilation hole can be opened and close the setting, just one side in reserve ventilation hole is equipped with reserve fan.

As another embodiment of the application, the standby fan is a speed-adjustable fan.

As another embodiment of the present application, the humidifier is a wet film humidifier.

The energy-saving SVG cooling system applied to the wind power plant has the beneficial effects that: compared with the prior art, the energy-saving SVG cooling system applied to the wind power plant realizes internal circulation between air in the SVG equipment room and the heat exchanger by virtue of the indoor fan, reduces dust accumulation and rainwater immersion in the SVG, and ensures safe, stable and efficient operation of power equipment; the rotating speed of the indoor fan and the rotating speed of the outdoor fan are both adjustable, so that the heat dissipation capacity of the SVG is matched with the heat dissipation capacity of outdoor circulation, and the energy-saving effect is achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an energy-saving SVG cooling system applied to a wind farm provided by an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a heat exchanger according to an embodiment of the present invention.

In the figure: 10. an SVG equipment room; 11. an SVG device; 20. a heat exchanger; 21. an indoor return air duct; 22. an indoor air inlet pipe; 23. an indoor fan; 24. a wet film humidifier; 25. a primary filter; 26. an outdoor fan; 30. a backup vent.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 and fig. 2, an energy-saving SVG cooling system for wind farm application provided by the present invention will now be described. The energy-saving SVG cooling system applied to the wind power plant comprises an SVG equipment room 10 and a heat exchanger 20; the heat exchanger 20 is arranged at the outer side of the SVG equipment room 10, the heat exchanger 20 is provided with an indoor air inlet pipe 22 and an indoor air return pipe 21 which are communicated with the SVG equipment room 10, and the indoor air inlet pipe 22 is provided with an indoor fan 23; the heat exchanger 20 is also provided with an outdoor air inlet pipe and an outdoor air outlet pipe, the outdoor air inlet pipe is provided with a humidifier, and the outdoor air outlet pipe is provided with an outdoor fan 26; the indoor fan 23 and the outdoor fan 26 are both speed-adjustable fans.

Compared with the prior art, the energy-saving SVG cooling system applied to the wind power plant provided by the utility model has the advantages that the SVG device 11 is arranged in the SVG device room 10, the SVG device room 10 is connected with the heat exchanger 20 by virtue of the indoor air inlet pipe 22 and the indoor air return pipe 21, and a closed internal circulation system is formed by the SVG device room and the heat exchanger 20; under the action of the indoor fan 23, the higher-temperature indoor air in the SVG equipment room 10 enters the heat exchanger 20 through the indoor air return pipe 21, exchanges heat with the outdoor air in the heat exchanger 20 for cooling, forms lower-temperature indoor air, and then enters the SVG equipment room 10 through the indoor air inlet pipe 22.

Outdoor air enters the humidifier from the outdoor air inlet pipe under the action of the outdoor fan 26, and is cooled by the humidifier, so that the air temperature approaches the outdoor wet bulb temperature, and the cooling potential of the outdoor air is fully utilized to improve the heat exchange efficiency.

An indoor fan 23 is installed on the indoor air inlet pipe 22 for controlling the circulation state of indoor air; the outdoor fan 26 is installed on the outdoor outlet duct for controlling the flow state of outdoor air.

According to the energy-saving SVG cooling system applied to the wind power plant, provided by the utility model, the internal circulation between the air in the SVG equipment room 10 and the heat exchanger 20 is realized by virtue of the indoor fan 23, the dust accumulation and rainwater immersion in the SVG are reduced, and the safe, stable and efficient operation of power equipment is ensured; the rotating speed of the indoor fan 23 and the rotating speed of the outdoor fan 26 are both adjustable, so that the heat dissipation capacity of the SVG is matched with the heat dissipation capacity of outdoor circulation, and the energy-saving effect is achieved.

Optionally, temperature sensing devices are respectively arranged at the pipe orifice of the indoor return air pipe 21 close to the SVG equipment room 10 side and the pipe orifice of the indoor air inlet pipe 22 close to the SVG equipment room 10 side, and the temperature sensing devices are connected with the controller. The controller adjusts the rotating speed of the outdoor fan 26 according to the temperature value of the pipe orifice of the indoor air inlet pipe 22 close to one side of the SVG equipment room 10; the controller adjusts the rotating speed of the indoor circulating fan according to the temperature difference of the two temperature sensing devices, and finally the heat dissipation capacity of the SVG is matched with the heat dissipation capacity of outdoor circulation, so that the energy-saving effect is achieved.

Optionally, one end of the indoor air return pipe 21 is connected to the heat exchanger 20, and the other end of the indoor air return pipe extends into the SVG equipment room 10 and extends to the upper end of the SVG equipment 11. One end of an indoor air inlet pipe 22 is connected to the heat exchanger 20, and the other end thereof extends into the lower portion of the SVG equipment room 10.

Optionally, the humidifier is a wet film humidifier 24. The basic principle of humidification of the wet film humidifier 24 is that water is sent to a water spraying system through a water feeding pump by a pipeline, and the lower part of the water spraying system is a humidifying material with high water absorbability, namely a wet film. Water permeates downwards along the wet film material under the action of gravity, and the water is absorbed by the wet film material to form a uniform water film; when dry air passes through the wet film material, water molecules fully absorb heat in the air to be vaporized and evaporated, so that the humidity of the air is increased, and moist air is formed. The increase in humidity of the air lowers the temperature, but the enthalpy of the air remains unchanged.

In some possible embodiments, the heat exchanger 20 is a counter-flow heat exchanger, which includes an inner channel and an outer channel arranged at intervals, and two ends of the inner channel are respectively communicated with the indoor air inlet pipe 22 and the indoor air return pipe 21; two ends of the outer channel are respectively communicated with an outdoor air inlet pipe and an outdoor air outlet pipe.

Specifically, the heat exchanger 20 is a counter-flow heat exchanger, indoor air enters the inner side channel from the SVG equipment chamber 10 through the indoor air return pipe 21, and enters the SVG equipment chamber 10 through the indoor air inlet pipe 22 after exchanging heat in the inner side channel; meanwhile, the outdoor air enters the outer channel of the heat exchanger 20 through the outdoor air inlet pipe, exchanges heat with the inner channel by means of the heat exchanger 20, and is discharged through the outdoor air outlet pipe after heat exchange.

The inner channel and the outer channel are arranged at intervals, and the air flow direction in the inner channel is opposite to the air flow direction in the outer channel, so that the heat exchange effect is improved.

In some possible embodiments, a plurality of parallel stacked plates are disposed in the heat exchanger 20, and an inner channel or an outer channel is formed between adjacent plates, and the inner channel and the outer channel are alternately disposed.

Specifically, the heat exchanger 20 includes a housing and a plurality of fins disposed in the housing, and the plurality of fins are stacked in parallel such that a ventilation channel is formed between two adjacent fins. The heat exchange plates are sealed to form an inner channel and an outer channel which are alternately arranged, the inner channel and the outer channel isolate indoor circulating air from outdoor air, the indoor circulating air and the outdoor air are not influenced by each other, and the effect that only heat transfer and mass transfer are achieved.

Optionally, the thickness of the heat exchanger plate is 0.1-0.2 mm. So as to ensure that a plurality of heat exchange fins can be additionally arranged in the heat exchanger 20, increase the number of medium flow channels and increase the heat exchange area in unit volume, and achieve the purpose of improving the heat exchange effect; and the thickness of the heat exchange sheet is reduced, so that the heat loss of heat conduction can be reduced, and the heat exchange efficiency is improved.

Optionally, the heat exchanger fin surface is provided with a reinforcing portion, and the reinforcing portion protrudes out of the heat exchanger fin surface. The reinforcement may be provided as a wave or chevron-shaped protrusion. The enhancement part can increase the disturbance of the medium in the area and improve the heat exchange efficiency.

Alternatively, the heat exchanger 20 is a thin plate aluminum alloy counter flow heat exchanger.

Alternatively, the heat exchanger 20 may refer to the polymer material air-to-air countercurrent heat exchanger provided in CN 202122353099.1.

In some possible embodiments, the indoor fan 23 and the outdoor fan 26 are both speed-adjustable fans.

The indoor fan 23 and the outdoor fan 26 both adopt speed-regulating fans, temperature sensing devices are arranged at the pipe orifice of the indoor return air pipe 21 close to one side of the SVG equipment room 10 and the pipe orifice of the indoor air inlet pipe 22 close to one side of the SVG equipment room 10, and the temperature sensing devices are connected with the controller. The controller adjusts the rotating speed of the outdoor fan 26 according to the temperature value of the pipe orifice of the indoor air inlet pipe 22 close to one side of the SVG equipment room 10; the controller adjusts the rotating speed of the indoor circulating fan according to the temperature difference of the two temperature sensing devices, and finally the heat dissipation capacity of the SVG is matched with the heat dissipation capacity of outdoor circulation, so that the energy-saving effect is achieved.

In some possible embodiments, referring to fig. 2, a housing is provided outside the heat exchanger 20, and the wet film humidifier 24 and the outdoor fan 26 are located inside the housing.

The indoor air inlet pipe 22 and the indoor air return pipe 21 both penetrate through the shell and are communicated with the heat exchanger 20 in the shell; the outdoor air inlet pipe and the outdoor air outlet pipe both penetrate through the shell and are communicated with the heat exchanger 20 in the shell.

Optionally, the ports of the outdoor air inlet pipe and the outdoor air outlet pipe are flush with the outer side wall of the shell.

In some possible embodiments, a primary filter 25 is further disposed in the housing, and the primary filter 25 is located on an outdoor air inlet pipe on a side of the wet film humidifier 24 away from the heat exchanger 20.

The primary filter 25 is communicated with the outdoor air inlet pipe, outdoor air enters the outdoor air inlet pipe from the port of the outdoor air inlet pipe, and enters the wet film humidifier 24 after passing through the primary filter 25, so that the wet film humidifier 24 is protected, and dust accumulation is prevented.

In some possible embodiments, the spare vent 30 is opened on a side wall of the SVG equipment room 10, the spare vent 30 is openably and closably provided, and a spare fan is provided at one side of the spare vent 30. When the heat exchanger 20 breaks down or is in cold weather, the standby ventilation holes 30 and the standby fan are opened, ventilation and cooling of the SVG equipment room 10 and the external environment are achieved, and stable operation of the equipment is guaranteed.

The spare vent 30 effectively improves the risk of damaging the equipment due to the entrance of a large amount of moisture in the local climate environment when air circulates, and ensures the stable operation of the equipment.

In some possible embodiments, the backup fan is a variable speed fan.

Specifically, set up reserve ventilation hole 30 on the lateral wall of SVG equipment room 10, mainly used solves emergency and leads to heat exchanger 20 unable operation, carries out aeration cooling to SVG equipment room 10. When the heat exchanger 20 can not normally operate, the standby ventilation hole 30 and the standby fan are opened, the standby fan pumps the air in the SVG equipment room 10 out of the standby ventilation hole 30 to discharge, and introduces external new air to realize the cooling of the SVG equipment 11.

In addition, in cold weather, the heat exchanger 20 can be closed, and the standby vent 30 can be opened to improve the cooling of the SVG device 11, so as to achieve the energy-saving effect. The speed regulation fan can adjust the ventilation efficiency according to the temperature of the SVG equipment 11, and the energy-saving effect is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Energy-saving SVG cooling system that wind-powered electricity generation field used, its characterized in that includes:

an SVG equipment room;

2. The energy-saving SVG cooling system for wind farm application of claim 1, wherein said heat exchanger is a counter flow heat exchanger, said counter flow heat exchanger comprises an inner channel and an outer channel arranged at intervals, both ends of said inner channel are respectively communicated with said indoor air inlet pipe and said indoor air return pipe; and two ends of the outer channel are respectively communicated with the outdoor air inlet pipe and the outdoor air outlet pipe.

3. The energy-efficient SVG cooling system for wind farm application of claim 2, characterized in that a plurality of heat exchanger fins are arranged in parallel in said heat exchanger, said inner channel or said outer channel is formed between adjacent heat exchanger fins, and said inner channel and said outer channel are arranged alternately.

4. An energy efficient SVG cooling system for wind farm applications according to claim 3 characterized in that said heat exchanger plate surface is provided with a reinforcement protruding out of the surface of said heat exchanger plate.

5. The energy efficient SVG cooling system for wind farm applications of claim 4, characterized in that said heat exchanger fins have a thickness of 0.1-0.2 mm.

6. The energy efficient SVG cooling system for wind farm application as claimed in claim 1 wherein a housing is provided outside of the heat exchanger; the humidifier and the outdoor fan are both located inside the shell.

7. An energy efficient SVG cooling system for wind farm applications according to claim 6 characterized in that inside said housing is also provided a primary filter located on said outdoor air inlet duct at the side of said humidifier away from said heat exchanger.

8. The energy efficient SVG cooling system for wind farm applications of claim 1, further comprising:

9. The energy-efficient SVG cooling system for wind farm applications according to claim 8 wherein said backup fan is selected from the group consisting of speed regulated fans.

10. The energy efficient SVG cooling system for wind farm applications according to claim 1, wherein said humidifier is a wet film humidifier.