CN215898280U

CN215898280U - Cooling device for frequency converter of wind turbine generator

Info

Publication number: CN215898280U
Application number: CN202121487550.2U
Authority: CN
Inventors: 刘玉泉; 许伟伟; 李月亮; 闫涛; 刘乃硕
Original assignee: Huaneng Yantai Wind Power Generation Co ltd
Current assignee: Huaneng Yantai Wind Power Generation Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-02-22
Anticipated expiration: 2031-07-01

Abstract

The utility model provides a cooling device for a frequency converter of a wind turbine generator, which comprises a frequency converter main body, wherein the frequency converter main body comprises a box body, and a cavity is arranged in the box body; a cooling mechanism located within the cavity; the frequency converter of the wind turbine generator is provided with the heat dissipation plate which is matched with the cooling mechanism, and the heat dissipation mechanism improves the cooling and heat dissipation effects of the cooling mechanism on the frequency converter.

Description

Cooling device for frequency converter of wind turbine generator

Technical Field

The utility model relates to the technical field of wind turbine generator frequency converters, in particular to a wind turbine generator frequency converter cooling device.

Background

At present, China is vigorously developing clean energy such as wind energy, water energy and tidal power generation, wherein the wind power generation comprises two energy conversion processes from wind energy to mechanical energy and from mechanical energy to electric energy, a wind wheel system can realize the energy conversion from the wind energy to the mechanical energy, a generator and a control system realize the energy conversion process from the mechanical energy to the electric energy, and a frequency converter in the wind power generator plays a crucial role.

The frequency converter of the wind driven generator generally comprises components such as a wind wheel, a generator, a direction regulator, a tower frame, a speed-limiting safety mechanism, an energy storage device and the like, however, the existing frequency converter of the wind driven generator has poor heat dissipation effect, internal components are very easy to be overheated and damaged, and the existing heat dissipation device of the frequency converter of the wind driven generator has the defects of large volume, high cost, poor heat dissipation effect and the like.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.

Therefore, the technical problem to be solved by the utility model is to overcome the defect of poor heat dissipation in the prior art, and thus the utility model provides the cooling device for the frequency converter of the wind turbine generator.

In order to solve the technical problems, the utility model provides the following technical scheme: a cooling device for a frequency converter of a wind turbine generator comprises a frequency converter main body, wherein the frequency converter main body comprises a box body, and a cavity is formed in the box body; a cooling mechanism located within the cavity; and the heat dissipation mechanism is positioned at the upper end of the box body.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the box body comprises a back plate, the back plate is movably connected with the box body, and two exhaust holes are formed in the surface, opposite to the back plate, of the box body.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the cooling mechanism comprises a temperature detection assembly and a cooling assembly, the temperature detection assembly is located inside the box body and fixedly connected with the inner wall of the box body, the temperature detection assembly is electrically connected with the cooling assembly, and the cooling assembly is located on the back plate.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the temperature detection assembly comprises a first temperature sensor, a second temperature sensor and a double-circuit temperature controller, the first temperature sensor and the second temperature sensor are fixed on the inner walls of the box body, which are opposite to each other, respectively, the double-circuit temperature controller is fixed on the back plate, and the first temperature sensor and the second temperature sensor are electrically connected with each other.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the cooling assembly comprises a first fan and a second fan, the first fan faces to the first temperature sensor, the second fan faces to the second temperature sensor, and the first fan and a switch of the second fan are electrically connected with the double-circuit temperature controller.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the heat dissipation mechanism comprises a heat dissipation plate and a surrounding plate, the heat dissipation plate is arranged at the top of the box body, and the surrounding plate is fixed at the top end of the box body.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the one side that the bounding wall was kept away from to the heating panel is the plane, the heating panel is equipped with a plurality of archs on being close to the one side of bounding wall, and is a plurality of for equidistance parallel arrangement between the arch, be equipped with a plurality of louvres between arch and the arch.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the heating panel is equipped with the filter screen for planar one side.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: the bounding wall includes two parallel curb plates and roof, the roof is parallel with the heating panel, two the curb plate is placed perpendicular to the heating panel.

As a preferred scheme of the cooling device for the frequency converter of the wind turbine generator, the cooling device comprises the following components: and a connecting line of the air inlet and the air outlet formed between the enclosing plate and the heat dissipation plate is vertical to the axis of the bulge on the heat dissipation plate.

The utility model has the beneficial effects that:

according to the utility model, the frequency converter of the wind turbine generator is provided with the heat dissipation plate matched with the cooling mechanism, and the heat dissipation mechanism has the effect of improving the cooling and heat dissipation effects of the cooling mechanism on the frequency converter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without inventive exercise. Wherein:

FIG. 1 is a schematic diagram of the overall structure of a frequency converter;

FIG. 2 is a schematic view of a cooling mechanism;

FIG. 3 is a schematic cross-sectional view of the frequency converter;

FIG. 4 is a schematic structural diagram of an embodiment of a heat dissipation mechanism on a frequency converter;

FIG. 5 is a schematic structural view of a heat dissipation mechanism;

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Example 1

The embodiment provides a cooling device for a frequency converter of a wind turbine generator, which comprises a frequency converter main body 100, wherein the frequency converter main body 100 comprises a box body 101, and a cavity is arranged in the box body 101; the cooling mechanism 200, the cooling mechanism 200 is located in the cavity; and a heat dissipation mechanism 300, wherein the heat dissipation mechanism 300 is positioned at the upper end of the box body 101. The cooling mechanism 200 detects the temperature change inside the box body 101, and when the temperature inside the box body 101 is too high, the cooling mechanism 200 cools and dissipates the heat inside the box body 101; the heat dissipation mechanism 300 passively cools the case 101 at any time, thereby preventing the temperature inside the case 101 from increasing. When the internal temperature of the box body 101 does not reach the set threshold value, the temperature is reduced mainly by the heat dissipation mechanism 300, and when the internal temperature of the box body 101 exceeds the set threshold value, the temperature of the box body 101 is reduced mainly by the cooling mechanism 200, so that the temperature reduction cost can be saved, and the temperature reduction efficiency is improved.

The box 101 includes a back plate 101a, the back plate 101a is movably connected to the box 101, and two exhaust holes 101b are disposed on a surface of the box 101 opposite to the back plate 101 a. The box body 101 is movably connected with the back plate 101a, and can be in bolt connection, and the back plate 101a can be detached, so that an operator can clean the interior of the box body 101 conveniently; two exhaust holes 101b are formed in the box 101, so that the cooling mechanism 200 can conveniently exhaust high-temperature gas in the box 101 to the natural environment for gas exchange.

The cooling mechanism 200 includes a temperature detecting component 201 and a temperature reducing component 202, the temperature detecting component 201 is located inside the box 101 and is fixedly connected with the inner wall of the box 101, the temperature detecting component 201 is electrically connected with the temperature reducing component 202, and the temperature reducing component 202 is located on the back plate 101 a. The temperature detection component 201 is used for measuring the temperature inside the box body 101, and then transmits the measured temperature to the cooling component 202, and the cooling component 202 cools the inside of the box body 101.

The temperature detection assembly 201 comprises a first temperature sensor 201a, a second temperature sensor 201b and a two-way temperature controller 201c, the first temperature sensor 201a and the second temperature sensor 201b are all in HSTL-PT100 types, the first temperature sensor 201a and the second temperature sensor 201b are respectively fixed on opposite inner walls inside the box body 101, the two-way temperature controller 201c is fixed on the back plate 101a, the two-way temperature controller 201c is in T2N99 type, and the first temperature sensor 201a and the second temperature sensor 201b are both electrically connected with the two-way temperature controller 201 c. The cooling assembly 202 includes a first fan 202a and a second fan 202b, the first fan 202a faces the first temperature sensor 201a, the second fan 202b faces the second temperature sensor 201b, and switches of the first fan 202a and the second fan 202b are electrically connected to the two-way temperature controller 201 c. The first temperature sensor 201a is used for measuring the temperature of the left area inside the box body 101, the first temperature sensor 201a transmits an electric signal for measuring the temperature to the two-way temperature controller 201c, the two-way temperature controller 201c controls the first fan 202a to rotate, the first fan 202a faces the position of the first temperature sensor 201a, and the first fan 202a cools the left area inside the box body 101; the second temperature sensor 201b is used for measuring the temperature of the right area inside the box 101, the second temperature sensor 201b transmits an electric signal for measuring the temperature to the two-way temperature controller 201c, the two-way temperature controller 201c controls the second fan 202b to rotate, the second fan 202b faces the position of the second temperature sensor 201b, and the second fan 202b cools the right area inside the box 101.

Example 2

The embodiment provides a wind turbine generator inverter cooling device, as shown in fig. 3-5, and an embodiment 2 is different from embodiment 1 in that it includes,

the heat dissipation mechanism 300 includes a heat dissipation plate 301 and a surrounding plate 302, the heat dissipation plate 301 is disposed on the top of the box 101, and the surrounding plate 302 is fixed to the top of the box 101. The top of the box body 101 is provided with a heat dissipation plate 301, the heat dissipation plate 301 can passively cool the interior of the box body 101, the enclosing plate 302 comprises two parallel side plates 302a and a top plate 302b, the top plate 302b is parallel to the heat dissipation plate 301, and the two side plates 302a are perpendicular to the heat dissipation plate 301. An air channel is formed between the enclosing plate 302 and the heat dissipation plate 301, one end of the air channel is an air inlet, the other end of the air channel is an air outlet, natural air enters the air channel from the air inlet, the air channel is discharged from the air outlet, heat discharged by the heat dissipation plate 301 can be taken away, and then the interior of the box body 101 is cooled.

The one side that heat dissipation plate 301 kept away from bounding wall 302 is the plane, is equipped with a plurality of archs 301a on the one side that heat dissipation plate 301 is close to bounding wall 302, is equidistance parallel arrangement between a plurality of archs 301a, is equipped with a plurality of louvres 301b between arch 301a and the arch 301 a. The connecting line of the air inlet and the air outlet formed between the enclosing plate 302 and the heat dissipation plate 301 is perpendicular to the axis of the bulge 301a on the heat dissipation plate 301. The direction of the wind of the air duct is perpendicular to the axis of the projection 301a on the heat radiating plate 301, according to the bernoulli principle: the fluid is less pressurized at high flow rates and more pressurized at low flow rates. The heat generated by the components inside the box 101 during operation can rise, and the heat dissipation plate 301 is provided with the protrusions 301a, so that the pressure intensity is not the same everywhere when the air current entering the air channel from the air inlet flows through the protrusions 301a, the rising speed of the hot air current is accelerated under the action of the pressure difference, the hot air current is discharged into the air channel from the heat dissipation holes 301b, and the heat dissipation and cooling inside the box 101 are further effectively performed. The planar side of the heat dissipation plate 301 is provided with a filter screen 303, and the filter screen 303 is arranged to prevent dust carried by natural wind in the wind channel from entering the inside of the box 101 and damaging elements inside the box 101.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the utility model, or those unrelated to enabling the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides a wind turbine generator system converter cooling device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the frequency converter comprises a frequency converter main body (100), wherein the frequency converter main body (100) comprises a box body (101), and a cavity is arranged in the box body (101);

a cooling mechanism (200), the cooling mechanism (200) being located within the cavity; and the number of the first and second groups,

the heat dissipation mechanism (300) is located at the upper end of the box body (101).

2. The wind turbine generator inverter cooling device according to claim 1, wherein: the box body (101) comprises a back plate (101a), the back plate (101a) is movably connected with the box body (101), and two exhaust holes (101b) are formed in the surface, opposite to the back plate (101a), of the box body (101).

3. The wind turbine generator inverter cooling device according to claim 2, wherein: cooling body (200) include temperature detect subassembly (201) and cooling subassembly (202), temperature detect subassembly (201) are located inside and box (101) inner wall fixed connection of box (101), cooling subassembly (202) are connected to temperature detect subassembly (201) electricity, cooling subassembly (202) are located on backplate (101 a).

4. The wind turbine generator inverter cooling device according to claim 3, wherein: temperature detect subassembly (201) includes first temperature sensor (201a), second temperature sensor (201b) and double-circuit temperature controller (201c), first temperature sensor (201a) and second temperature sensor (201b) are fixed in on the inside relative inner wall of box (101) respectively, double-circuit temperature controller (201c) is fixed on backplate (101a), double-circuit temperature controller (201c) is all connected electrically with second temperature sensor (201 b).

5. The wind turbine generator inverter cooling device according to claim 3 or 4, wherein: the cooling assembly (202) comprises a first fan (202a) and a second fan (202b), the first fan (202a) faces to the first temperature sensor (201a), the second fan (202b) faces to the second temperature sensor (201b), and switches of the first fan (202a) and the second fan (202b) are both electrically connected with the two-way temperature controller (201 c).

6. The wind turbine generator inverter cooling device according to claim 1, wherein: the heat dissipation mechanism (300) comprises a heat dissipation plate (301) and a surrounding plate (302), the heat dissipation plate (301) is arranged at the top of the box body (101), and the surrounding plate (302) is fixed at the top end of the box body (101).

7. The wind turbine generator inverter cooling device according to claim 6, wherein: one side that bounding wall (302) were kept away from to heating panel (301) is the plane, heating panel (301) are close to and are equipped with a plurality of archs (301a) on the one side of bounding wall (302), and are a plurality of for equidistance parallel arrangement between arch (301a), be equipped with a plurality of louvres (301b) between arch (301a) and arch (301 a).

8. The wind turbine generator inverter cooling device according to claim 6 or 7, wherein: and a filter screen (303) is arranged on one side of the plane of the heat dissipation plate (301).

9. The wind turbine generator inverter cooling device according to claim 6 or 7, wherein: the enclosing plate (302) comprises two parallel side plates (302a) and a top plate (302b), the top plate (302b) is parallel to the heat dissipation plate (301), and the two side plates (302a) are perpendicular to the heat dissipation plate (301).

10. The wind turbine generator inverter cooling device according to claim 9, wherein: and a connecting line of an air inlet and an air outlet formed between the enclosing plate (302) and the heat dissipation plate (301) is vertical to the axis of the bulge (301a) on the heat dissipation plate (301).