阅读说明：本技术 一种半开放式大功率设备冷却系统及冷却方法 (Semi-open type high-power equipment cooling system and cooling method ) 是由 吴努斌 陈雄 杨健 徐荣 杨恒辉 谭林川 苏宝焕 尹露 于 2021-07-19 设计创作，主要内容包括：本发明涉及冷却系统技术领域,提出一种半开放式大功率设备冷却系统及方法。该系统包括半开放式大功率设备结构、半开放式大功率设备、内散热器、内散热器风扇以及管路连接冷却系统。本发明可以同时满足半开放式大功率设备和封闭环境的冷却需求,使冷却系统的总成本大量下降；本发明可以增强半开放式大功率设备结构外壁的对流换热5-10kW,从而显著降低了冷却系统的自耗电；以及本发明通过取消冷却背包并将多个内散热器布置于半开放式大功率设备下方的方式,有效缓解了大功率设备在封闭环境内布局中的尺寸限制压力；并且采用双侧通风相比于单侧通风有效减少发热元件的局部热点。(The invention relates to the technical field of cooling systems, and provides a semi-open type high-power equipment cooling system and a method. The system comprises a semi-open type high-power equipment structure, semi-open type high-power equipment, an inner radiator fan and a pipeline connecting cooling system. The invention can simultaneously meet the cooling requirements of semi-open type high-power equipment and closed environment, so that the total cost of the cooling system is greatly reduced; the invention can enhance the convection heat transfer of the outer wall of the semi-open type high-power equipment structure by 5-10kW, thereby obviously reducing the self-power consumption of a cooling system; the invention effectively relieves the size limitation pressure of the high-power equipment in the layout in a closed environment by eliminating the cooling backpack and arranging the plurality of inner radiators below the semi-open high-power equipment; and the adoption of double-sided ventilation effectively reduces local hot spots of the heating element compared with single-sided ventilation.)

1. A semi-open high power equipment cooling system, comprising:

a semi-open high power equipment structure, said semi-open high power equipment structure comprising:

a first platform configured to carry a semi-open high power device, and the first platform having a vent; and

a semi-open high power device structure exterior wall configured to enclose a semi-open high power device and to be in contact with an atmospheric environment;

a semi-open high power device, the semi-open high power device comprising:

one or more heat generating elements; and

a semi-open high power device enclosure enclosing the one or more heat generating elements, and comprising:

a plurality of semi-open high-power equipment air inlets disposed at an upper portion of a sidewall of the semi-open high-power equipment enclosure; and

a semi-open high power equipment air outlet disposed at a bottom of the semi-open high power equipment housing;

the inner radiator is connected with the semi-open type high-power equipment air outlet, and an inner radiator fan is arranged below the fan inner radiator;

an inner heat sink fan connected to the inner heat sink; and

and the pipeline is connected with a cooling system which is connected with the inner radiator.

2. The semi-open high power equipment cooling system according to claim 1, characterized in that: the inner radiator is arranged below the semi-open type high-power equipment, and the inner radiator fan is arranged below the inner radiator.

3. The semi-open high power equipment cooling system according to claim 2, characterized in that: the pipeline connection cooling system comprises a pipeline connection air conditioning system or a pipeline connection water cooling system.

4. The semi-open high power equipment cooling system according to claim 3, wherein the pipe connection water cooling system comprises:

a water pump;

a water-cooled pipeline; and

an outer heat sink disposed outside the semi-open high power device structure and connected with the inner heat sink.

5. The semi-open high power equipment cooling system according to claim 1, characterized in that: the ventilation holes comprise a plurality of grid holes which are arranged continuously or at intervals or grid rings which are arranged in a surrounding mode.

6. The semi-open high power equipment cooling system according to claim 1, characterized in that: the plurality of semi-open type high-power equipment air inlets are continuously arranged at the upper part of the side wall of the semi-open type high-power equipment shell at intervals.

7. The semi-open high power equipment cooling system according to claim 4, characterized in that: the plurality of semi-open type high-power equipment air outlets are symmetrically arranged or approximately symmetrically arranged by taking the center of the bottom of the semi-open type high-power equipment shell as a symmetric center;

the air outlets of the semi-open type high-power equipment are respectively connected with one of the inner radiators; and

the plurality of inner radiators are respectively connected with one of the plurality of inner radiator fans.

8. The semi-open high power equipment cooling system according to claim 7, characterized in that: the plurality of inner radiators are mutually connected in parallel or in series through the water cooling pipelines.

9. The semi-open high power equipment cooling system according to claim 1, characterized in that: a temperature sensor is disposed on the heating element.

10. The semi-open high power equipment cooling system according to claim 1, characterized in that: the semi-open high power equipment structure further comprises one or more second platforms arranged to cover the semi-open high power equipment at least above the semi-open high power equipment.

11. The semi-open high power equipment cooling system according to claim 1, characterized in that: the semi-open type high-power equipment structure comprises a fan tower and a container.

12. The semi-open high power equipment cooling system according to claim 1, characterized in that: the semi-open type high-power equipment comprises a transformer and a frequency converter.

13. A method for cooling a semi-open high power equipment using the semi-open high power equipment cooling system according to any one of claims 1 to 12, comprising the steps of:

cooling a semi-open high power plant by a first cooling cycle comprising the steps of:

the first cold air flow takes away heat after passing through the outer surface of one or more heating elements and an air gap and forms a first hot air flow;

the first hot air flow passes through the inner radiator under the drive of the fan of the inner radiator and is cooled to form a second cold air flow;

the second cold air flow enters the semi-open type high-power equipment structure, is mixed with air on the upper layer in the semi-open type high-power equipment structure through the vent hole and forms a third cold air flow with the outer wall of the semi-open type high-power equipment structure through convection heat exchange; and

the third cold airflow flows back into the semi-open type high-power equipment through a plurality of semi-open type high-power equipment air inlets to form a first cooling cycle; and

cooling the semi-open high-power equipment by a second cooling cycle, wherein an internal radiator is cooled by heat exchange of an external cooling system in the second cooling cycle.

14. The method of cooling a fan semi-open high power device according to claim 13, wherein the cooling of the semi-open high power device by the second cooling cycle comprises the steps of:

absorbing heat of the first hot air flow by an inner radiator and forming a first hot water flow;

the first hot water flow is driven by a water pump to be conveyed to an outer radiator through a water cooling pipeline;

discharging heat of the first hot water stream into an atmospheric heat sink by an external heat sink and forming a cooled second cold water stream; and

and driving the second cold water flow to be conveyed to an inner radiator through a water cooling pipeline by a water pump to form the second cooling cycle.

15. A wind power generator having a semi-open high power equipment cooling system according to any one of claims 1 to 12.

16. An energy storage system having a semi-open high power equipment cooling system according to any one of claims 1 to 12.

Technical Field

The present invention relates generally to the field of cooling systems. In particular, the invention relates to a semi-open high-power equipment cooling system and a method.

Background

For high power equipment disposed in an enclosed environment, its associated cooling system is an important part. Taking an offshore wind turbine generator system as an example, the high-power equipment in the offshore wind turbine generator system may be, for example, a wind turbine transformer, the wind turbine transformer is arranged in a wind turbine tower, and a heating element of the wind turbine transformer is mainly a transformer winding.

As shown in fig. 2, the prior art wind turbine transformer generally adopts a closed type water-cooled dry-type transformer, wherein the cooling of the transformer winding 201 is realized by a cooling backpack 203 arranged at the side of the wind turbine transformer. However, because a closed water-cooled dry-type transformer is used, the air inside the wind turbine tower and the air inside the wind turbine transformer are isolated from each other, and therefore, the tower cooler 212 needs to be separately arranged on the wind turbine tower to cool the tower environment. In this way, since the wind turbine transformer and the wind turbine tower environment are both provided with independent cooling equipment, the total cost of the cooling system is high and the self-power consumption of the offshore wind turbine generator system is greatly increased. Moreover, since the cooling backpack 203 is usually disposed on the side of the wind turbine transformer, the circumferential size of the wind turbine transformer is large, which is not favorable for the wind turbine transformer to be embedded in the wind turbine tower. In addition, since the cooling pack is ventilated only on one side of the cooling pack, the ventilation uniformity is poor, which may cause local hot spot temperature rise on the leeward side of the transformer winding 201.

Disclosure of Invention

To at least partially solve the above problems in the prior art, the present invention proposes a semi-open high power equipment cooling system comprising:

a semi-open high power equipment structure, said semi-open high power equipment structure comprising:

a first platform configured to carry a semi-open high power device, and the first platform having a vent; and

a semi-open high power device structure exterior wall configured to enclose a semi-open high power device and to be in contact with an atmospheric environment;

a semi-open high power device, the semi-open high power device comprising:

one or more heat generating elements; and

a semi-open high power device enclosure enclosing the one or more heat generating elements, and comprising:

a plurality of semi-open high-power equipment air inlets disposed at an upper portion of a sidewall of the semi-open high-power equipment enclosure; and

a semi-open high power equipment air outlet disposed at a bottom of the semi-open high power equipment housing;

the inner radiator is connected with the semi-open type high-power equipment air outlet, and an inner radiator fan is arranged below the fan inner radiator;

an inner heat sink fan connected to the inner heat sink; and

and the pipeline is connected with a cooling system which is connected with the inner radiator.

In one embodiment of the invention, provision is made for: the inner radiator is arranged below the semi-open type high-power equipment, and the inner radiator fan is arranged below the inner radiator.

In one embodiment of the invention, provision is made for: the pipeline connection cooling system comprises a pipeline connection air conditioning system or a pipeline connection water cooling system.

In one embodiment of the present invention, it is provided that the pipe connection water cooling system includes:

a water pump;

a water-cooled pipeline; and

an outer heat sink disposed outside the semi-open high power device structure and connected with the inner heat sink.

In one embodiment of the invention, provision is made for: the ventilation holes comprise a plurality of grid holes which are arranged continuously or at intervals or grid rings which are arranged in a surrounding mode.

In one embodiment of the invention, provision is made for: the plurality of semi-open type high-power equipment air inlets are continuously arranged at the upper part of the side wall of the semi-open type high-power equipment shell at intervals.

In one embodiment of the invention, provision is made for: the plurality of semi-open type high-power equipment air outlets are symmetrically arranged or approximately symmetrically arranged by taking the center of the bottom of the semi-open type high-power equipment shell as a symmetric center;

the air outlets of the semi-open type high-power equipment are respectively connected with one of the inner radiators; and

the plurality of inner radiators are respectively connected with one of the plurality of inner radiator fans.

In one embodiment of the invention, provision is made for: the plurality of inner radiators are mutually connected in parallel or in series through the water cooling pipelines.

In one embodiment of the invention, provision is made for: a temperature sensor is disposed on the heating element.

In one embodiment of the invention, provision is made for: the semi-open high power equipment structure further comprises one or more second platforms arranged to cover the semi-open high power equipment at least above the semi-open high power equipment.

In one embodiment of the invention, provision is made for: the semi-open type high-power equipment structure comprises a fan tower and a container.

In one embodiment of the invention, provision is made for: the semi-open type high-power equipment comprises a transformer and a frequency converter.

The invention also provides a method for cooling the semi-open type high-power equipment by using the semi-open type high-power equipment cooling system, which comprises the following steps:

cooling a semi-open high power plant by a first cooling cycle comprising the steps of:

the first cold air flow takes away heat after passing through the outer surface of one or more heating elements and an air gap and forms a first hot air flow;

the first hot air flow passes through the inner radiator under the drive of the fan of the inner radiator and is cooled to form a second cold air flow;

the second cold air flow enters the semi-open type high-power equipment structure, is mixed with air on the upper layer in the semi-open type high-power equipment structure through the vent hole and forms a third cold air flow with the outer wall of the semi-open type high-power equipment structure through convection heat exchange; and

the third cold airflow flows back into the semi-open type high-power equipment through a plurality of semi-open type high-power equipment air inlets to form a first cooling cycle; and

cooling the semi-open high-power equipment by a second cooling cycle, wherein an internal radiator is cooled by heat exchange of an external cooling system in the second cooling cycle.

In one embodiment of the invention, it is provided that the cooling of the semi-open high-power plant by means of the second cooling cycle comprises the following steps:

absorbing heat of the first hot air flow by an inner radiator and forming a first hot water flow;

the first hot water flow is driven by a water pump to be conveyed to an outer radiator through a water cooling pipeline;

discharging heat of the first hot water stream into an atmospheric heat sink by an external heat sink and forming a cooled second cold water stream; and

and driving the second cold water flow to be conveyed to an inner radiator through a water cooling pipeline by a water pump to form the second cooling cycle.

The invention also provides a wind driven generator which is provided with the semi-open type high-power equipment cooling system.

The invention relates to an energy storage system which is provided with the semi-open type high-power equipment cooling system.

The invention has at least the following beneficial effects: the invention adopts semi-open type high-power equipment which is combined with an external closed environment to meet the cooling requirement, so that the total cost of a cooling system is greatly reduced; the invention can enhance convection heat transfer by 5-10kW through the outer wall of the semi-open type high-power equipment structure, thereby obviously reducing the self-power consumption of a cooling system; the invention effectively relieves the size limitation pressure of the high-power equipment in the external closed environment by eliminating the cooling backpack and arranging the plurality of internal radiators under the semi-open high-power equipment in a symmetrical or approximately symmetrical mode, improves the feasibility of the equipment such as a built-in high-power transformer and a high-power frequency converter, effectively improves the flow uniformity in a cooled part compared with single-side ventilation by adopting double-side ventilation, and reduces the local hot spots of heating elements.

Drawings

To further clarify the advantages and features that may be present in various embodiments of the present invention, a more particular description of various embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. In the drawings, the same or corresponding parts will be denoted by the same or similar reference numerals for clarity.

Fig. 1 shows a schematic view of a wind power generator to which the present invention is applied.

Fig. 2 shows a schematic diagram of a semi-open high-power equipment cooling system in the prior art.

Fig. 3 shows a schematic structural diagram of a semi-open type high-power equipment cooling system in one embodiment of the invention.

Detailed Description

It should be noted that the components in the figures may be exaggerated and not necessarily to scale for illustrative purposes. In the figures, identical or functionally identical components are provided with the same reference symbols.

In the present invention, "disposed on …", "disposed over …" and "disposed over …" do not exclude the presence of an intermediate therebetween, unless otherwise specified. Further, "disposed on or above …" merely indicates the relative positional relationship between two components, and may also be converted to "disposed below or below …" and vice versa in certain cases, such as after reversing the product direction.

In the present invention, the embodiments are only intended to illustrate the aspects of the present invention, and should not be construed as limiting.

In the present invention, the terms "a" and "an" do not exclude the presence of a plurality of elements, unless otherwise specified.

It is further noted herein that in embodiments of the present invention, only a portion of the components or assemblies may be shown for clarity and simplicity, but those of ordinary skill in the art will appreciate that, given the teachings of the present invention, required components or assemblies may be added as needed in a particular scenario. Furthermore, features from different embodiments of the invention may be combined with each other, unless otherwise indicated. For example, a feature of the second embodiment may be substituted for a corresponding or functionally equivalent or similar feature of the first embodiment, and the resulting embodiments are likewise within the scope of the disclosure or recitation of the present application.

It is also noted herein that, within the scope of the present invention, the terms "same", "equal", and the like do not mean that the two values are absolutely equal, but allow some reasonable error, that is, the terms also encompass "substantially the same", "substantially equal". By analogy, in the present invention, the terms "perpendicular", "parallel" and the like in the directions of the tables also cover the meanings of "substantially perpendicular", "substantially parallel".

The numbering of the steps of the methods of the present invention does not limit the order of execution of the steps of the methods. Unless specifically stated, the method steps may be performed in a different order.

The invention is further elucidated with reference to the drawings in conjunction with the detailed description.

The invention can be applied to wind power generators or energy storage systems. Fig. 1 shows a schematic view of a wind turbine 100 to which the present invention is applied. As shown in FIG. 1, wind turbine 100 includes a wind turbine tower 101, a nacelle 102 rotatably coupled to wind turbine tower 101 and supporting a hub 103. Two or more blades 104 are arranged on the hub 103, wherein the blades 104, under the influence of wind, rotate a rotor (not shown) arranged in the hub 108 around an axis (not shown), wherein rotation of the rotor of the generator relative to the stator will generate electrical energy.

In one embodiment of the present invention, a semi-open type high power equipment cooling system is provided, which comprises a semi-open type high power equipment structure, a semi-open type high power equipment, an inner radiator and a pipe connection cooling system. The semi-open high power equipment structure may enclose the semi-open high power equipment, which may be a wind turbine tower or a container, for example. The semi-open power devices, which may be transformers or frequency converters, for example, have heating elements therein. Taking a wind turbine transformer in a wind turbine tower as an example, in the wind turbine transformer, the heating element includes a transformer winding. The pipeline connecting cooling system is connected with the radiator in the fan and can be a water cooling system or an air conditioning system. However, it should be understood by those skilled in the art that the above-mentioned semi-open type high power equipment structure, semi-open type high power equipment and pipe connection cooling system are not limited to the given examples, and those skilled in the art can make adaptive choices according to actual needs.

As shown in fig. 3, in an embodiment of the present invention, the semi-open type high power equipment cooling system 300 may include a fan tower, a fan transformer, an internal tower radiator and an external tower radiator, wherein the internal tower radiator and the external tower radiator are connected by a water cooling pipeline and a water pump to form an external cooling system.

The wind turbine tower may include a first tower platform 313, a second tower platform 317, an outer tower wall 316, and a tower foundation 318.

First tower platform 313 is arranged below the wind turbine transformer for carrying the wind turbine transformer, and first tower platform 313 has vent holes 314 and 315. The vent holes 314 and 315 may be, for example, a plurality of grid holes arranged in series/spaced apart or a grid ring arranged around.

The tower outer wall 316 is arranged to surround the wind turbine transformer at least at its sides and is connected to a tower foundation 318.

One or more second tower platforms 317 may be disposed such that the one or more second tower platforms 317 cover the wind turbine transformer at least above the wind turbine transformer and are coupled to the tower outer wall 316.

The wind turbine transformer comprises one or more transformer windings 301 and a transformer housing 304.

A plurality of temperature sensors 326 may be arranged on the transformer winding 301, which plurality of temperature sensors 326 may be distributed throughout the transformer winding 301 and may detect temperature variations at different locations of the transformer winding 301.

The transformer housing 304 surrounds the transformer windings, and the transformer housing 304 includes a plurality of transformer air inlets 303 and transformer air outlets 305 and 306.

The plurality of transformer air inlets 303 may be arranged at the side wall of the transformer housing 304, especially at the upper portion of the side wall, continuously/at intervals. Here, the term "upper portion" means that the distance from the top surface is smaller than the distance from the bottom surface, and the term "lower portion" means that the distance from the bottom surface is smaller than the distance from the top surface.

The transformer air outlets 305 and 306 are arranged at the bottom of the transformer housing, and the plurality of transformer air outlets 305 and 306 can be symmetrically arranged or approximately symmetrically arranged with the center of the bottom of the transformer housing as a symmetric center, so that double-side ventilation of the transformer winding 301 is realized. The plurality of transformer air outlets 305 and 306 are symmetrically arranged on both sides, so that the flow uniformity of the cooling air of the transformer winding 301 can be improved, a better cooling effect can be obtained, and local temperature rise hot spots can be effectively avoided.

Through the transformer air inlet 303 and the transformer air outlet 305 and 306, the internal cooling of the semi-open type transformer and the cooling of the tower cylinder environment can be coupled together, and the heat exchange requirements of the transformer winding 301 and the air environment in the tower can be simultaneously met by utilizing the heat radiator 307 and 308 in the tower.

The tower internal radiators 307-308 are arranged below the blower transformer, the plurality of transformer air outlets 305-306 are respectively connected with one of the plurality of corresponding tower internal radiators 307-308, and the plurality of tower internal radiators 307-308 are respectively connected with one of the plurality of tower internal radiator fans 309-310. The radiator 307 and 308 in the tower is arranged below the bottom of the fan transformer, so that the radiator is more suitable for being placed in a tower with a limited radius compared with a traditional cooling backpack.

Under the driving of the radiator fan 309 and 310 in the tower, the air in the tower can pass through the vent hole 314 and 315 and carries out heat convection with the outer wall 316 of the tower barrel, so that the self power consumption of the radiator 312 outside the tower can be effectively reduced.

The external tower radiator 312 is arranged outside the wind turbine tower, and the external tower radiator 312 is connected with the internal tower radiator 307 and 308 through a water pump 311 and water cooling pipelines 319 and 325. Wherein a plurality of tower internal radiators 307-308 are connected in parallel with each other through water-cooling pipelines. The external cooling system of the present embodiment is configured by connecting the external tower radiator 312 and the plurality of internal tower radiators 307 to 30 in the above manner.

The arrangement of the cooling system described above can constitute the first cooling cycle and the second cooling cycle of a semi-open high-power equipment cooling system.

The first cooling cycle includes: the temperature of the transformer winding 301 is increased due to power consumption of the transformer winding, heat is taken away after cold air passes through the outer surface and the air gap of the transformer winding 301, hot air passes through the radiator 307 and 308 in the tower under the drive of the radiator fan 309 and 310 in the tower, the heat is transferred to the radiator 307 and 308 in the tower, the cooled air enters the tower environment and is mixed with the air on the upper layer of the tower above the first tower platform through the vent hole 314 and 315, convection heat exchange between the air in the tower and the outer wall 316 of the tower can be enhanced in the process, and finally cold air flows back to the transformer through the plurality of transformer air inlets 303 above the side wall of the transformer shell 304 to form the whole air cooling loop.

The water second cooling cycle comprises: the plurality of in-tower radiators 307-308 are connected in parallel with the water pump 311, the out-tower radiator 312 and other power equipment through the water cooling pipes 319-325. After the heat exchanger 307 and 308 in the tower cools the hot air, the temperature of the outlet water rises, the hot water flows through the heat radiator 312 outside the tower under the drive of the water pump 311, and is discharged into the atmospheric heat sink in an active air cooling or passive air cooling mode, and the cooled water continuously exchanges heat in a circulating manner.

While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. It will be apparent to persons skilled in the relevant art that various combinations, modifications, and changes can be made thereto without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention disclosed herein should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.