阅读说明：本技术 冷却装置及包含其的海上风力发电机 (Cooling device and offshore wind driven generator comprising same ) 是由 施平辉 王孝伟 李鸿昕 吴安吉 于 2020-05-20 设计创作，主要内容包括：本发明公开了一种冷却装置及包含其的海上风力发电机,所述冷却装置用于海上风力发电机的齿轮箱的润滑液的冷却,所述冷却装置包括循环回路,所述循环回路用于冷却液流动,所述循环回路上依次设有换热部、散热部及动力部；所述换热部用于所述冷却液与所述润滑油交换热量；所述散热部用于所述冷却液将热量交换至外界；所述动力部用于驱动所述冷却液在所述循环回路中流动。通过利用循环回路连通换热部、散热部及动力部,利用动力部驱动循环回路内的冷却液,并利用冷却液借助散热部吸收润滑油的热量,再利用散热部将冷却液的热量交换至外部,从而将润滑油的热量交换至外界,实现润滑油的冷却。本申请的冷却装置结构紧凑、换热效率高。(The invention discloses a cooling device and an offshore wind driven generator comprising the same, wherein the cooling device is used for cooling lubricating liquid of a gearbox of the offshore wind driven generator and comprises a circulating loop, the circulating loop is used for flowing the cooling liquid, and a heat exchanging part, a heat radiating part and a power part are sequentially arranged on the circulating loop; the heat exchange part is used for exchanging heat between the cooling liquid and the lubricating oil; the heat dissipation part is used for the cooling liquid to exchange heat to the outside; the power part is used for driving the cooling liquid to flow in the circulating loop. The circulating loop is used for communicating the heat exchanging part, the radiating part and the power part, the power part is used for driving the cooling liquid in the circulating loop, the cooling liquid absorbs the heat of the lubricating oil through the radiating part, and the radiating part is used for exchanging the heat of the cooling liquid to the outside, so that the heat of the lubricating oil is exchanged to the outside, and the cooling of the lubricating oil is realized. The cooling device is compact in structure and high in heat exchange efficiency.)

1. A cooling device is used for cooling lubricating liquid of a gearbox of an offshore wind turbine and is characterized by comprising a circulating loop, wherein the circulating loop is used for flowing of the cooling liquid, and a heat exchanging part, a heat radiating part and a power part are sequentially arranged on the circulating loop;

the heat exchange part is used for exchanging heat between the cooling liquid and the lubricating oil;

the heat dissipation part is used for the cooling liquid to exchange heat to the outside;

the power part is used for driving the cooling liquid to flow in the circulating loop.

2. The cooling apparatus as claimed in claim 1, wherein the power unit includes a motor and a cooling pump, the motor is drivingly connected to the cooling pump, the cooling pump is in communication with the circulation loop, and the cooling pump is configured to drive the cooling fluid in the circulation loop.

3. The cooling apparatus as claimed in claim 1, further comprising a first integrated block assembly, wherein a first cooling fluid passage is provided in the first integrated block assembly, an inlet of the first cooling fluid passage is in communication with an outlet of the power unit, and an outlet of the first cooling fluid passage is in communication with the heat exchanging unit.

4. The cooling apparatus of claim 3, wherein the first integrated block assembly further comprises:

a pressure gauge in communication with the first coolant passage;

a first pressure sensor in communication with the first coolant passage; the first pressure sensor is used for measuring the pressure of the first cooling liquid channel, the first pressure sensor is also connected with an electronic control system of the wind driven generator, and the first pressure sensor is used for transmitting a signal of the pressure to the electronic control system;

a first pressure tap in communication with the first coolant passage;

a first exhaust valve in communication with the first coolant passage;

a check valve in communication with the first coolant passage.

5. The cooling device as claimed in claim 3, wherein one of the power units and one of the first integrated blocks form a set of power units, the cooling device comprises two sets of the power units, the two sets of the power units are connected in parallel, and a liquid inlet and a liquid outlet of each set of the power units are respectively communicated with the circulation loop.

6. The cooling apparatus as claimed in claim 1, further comprising a second integrated block assembly, wherein a second cooling liquid passage is provided in the second integrated block assembly, a liquid inlet of the second cooling liquid passage is communicated with the liquid outlet of the heat dissipating portion, and a liquid outlet of the second cooling liquid passage is communicated with the liquid inlet of the power portion.

7. The cooling apparatus of claim 6, wherein the second integrated block assembly further comprises:

an expansion tank assembly in communication with the second coolant passage;

the second pressure sensor is communicated with the second cooling liquid passage and used for measuring the pressure of the second cooling liquid passage at the liquid inlet of the expansion tank assembly, the second pressure sensor is also connected with an electric control system of the wind driven generator, and the second pressure sensor is used for transmitting a signal of the pressure to the electric control system;

a second pressure tap in communication with the second coolant passage;

a second temperature sensor in communication with the second coolant passage, the temperature sensor for measuring a temperature of the coolant at a liquid outlet of the heat sink portion;

and the liquid inlet of the overflow valve is communicated with the second cooling liquid passage, and the liquid outlet of the overflow valve is communicated with the overflow container.

8. The cooling apparatus according to claim 1, wherein the heat-radiating portion includes a fan heat exchanger that communicates with the circulation circuit; the number of the fan heat exchangers is two, and the two fan heat exchangers are connected in parallel to the circulating loop;

the heat exchange portion comprises a plate heat exchanger, and the plate heat exchanger is used for exchanging heat between the cooling liquid and the lubricating oil.

9. The cooling apparatus according to claim 1, wherein the circulation circuit further comprises:

the liquid inlet and outlet valves are used for introducing or discharging the cooling liquid;

a first temperature sensor disposed between the heat exchanging portion and the heat dissipating portion, the first temperature sensor being configured to measure a temperature of the coolant at the liquid outlet of the heat exchanging portion;

and the second exhaust valve is arranged between the heat exchanging part and the heat radiating part.

10. An offshore wind turbine, characterized in that it comprises a cooling device according to any of claims 1-9 for cooling of the lubrication fluid of the gearbox.

Technical Field

The invention relates to the field of wind driven generators, in particular to a cooling device and an offshore wind driven generator comprising the same.

Background

An offshore wind turbine is an electric device which converts wind energy into mechanical work, and the mechanical work drives a rotor to rotate so as to finally output alternating current.

In order to meet the cooling requirements of gearbox lubricating fluid of offshore wind turbines, traditional open water cooling systems are generally adopted. In order to secure cooling efficiency, the conventional open water cooling system requires a large amount of fresh water. Correspondingly, the installation position of the offshore wind driven generator is far away from the land, so that a large amount of fresh water is difficult to obtain, and meanwhile, the space in the cabin of the offshore wind driven generator is narrow and small, and a large amount of fresh water is not stored in enough space. Therefore, the traditional open water cooling system is difficult to meet the cooling requirement of the gearbox lubricating liquid of the offshore wind driven generator.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a cooling device and an offshore wind turbine comprising the same.

The invention is realized by the following technical scheme:

a cooling device is used for cooling lubricating liquid of a gearbox of an offshore wind turbine and comprises a circulating loop, wherein the circulating loop is used for flowing of the cooling liquid, and a heat exchanging part, a heat radiating part and a power part are sequentially arranged on the circulating loop;

the heat exchange part is used for exchanging heat between the cooling liquid and the lubricating oil;

the heat dissipation part is used for the cooling liquid to exchange heat to the outside;

the power part is used for driving the cooling liquid to flow in the circulating loop.

Further, the power part comprises a motor and a cooling pump, the motor is connected to the cooling pump in a driving mode, the cooling pump is communicated with the circulating loop, and the cooling pump is used for driving cooling liquid in the circulating loop.

Further, the cooling device further comprises a first integrated block assembly, a first cooling liquid passage is arranged in the first integrated block assembly, a liquid inlet of the first cooling liquid passage is communicated with a liquid outlet of the power portion, and a liquid outlet of the first cooling passage is communicated with the heat exchange portion.

Further, the first integrated block assembly further comprises:

a pressure gauge in communication with the first coolant passage;

a first pressure sensor in communication with the first coolant passage; the first pressure sensor is used for measuring the pressure of the first cooling liquid channel, the first pressure sensor is also connected with an electronic control system of the wind driven generator, and the first pressure sensor is used for transmitting a signal of the pressure to the electronic control system;

a first pressure tap in communication with the first coolant passage;

a first exhaust valve in communication with the first coolant passage;

a check valve in communication with the first coolant passage.

Furthermore, one power portion and one first integrated block constitute one set of power unit, cooling device includes two sets of power unit, two sets of power unit connects in parallel, and every set of power unit's inlet and liquid outlet communicate respectively circulation circuit.

Further, the cooling device further comprises a second integrated block assembly, a second cooling liquid passage is arranged in the second integrated block assembly, a liquid inlet of the second cooling liquid passage is communicated with a liquid outlet of the heat dissipation portion, and a liquid outlet of the second cooling liquid passage is communicated with a liquid inlet of the power portion.

Further, the second integrated block assembly further comprises:

an expansion tank assembly in communication with the second coolant passage;

the second pressure sensor is communicated with the second cooling liquid passage and used for measuring the pressure of the second cooling liquid passage at the liquid inlet of the expansion tank assembly, the second pressure sensor is also connected with an electric control system of the wind driven generator, and the second pressure sensor is used for transmitting a signal of the pressure to the electric control system;

a second pressure tap in communication with the second coolant passage;

a second temperature sensor in communication with the second coolant passage, the temperature sensor for measuring a temperature of the coolant at a liquid outlet of the heat sink portion;

and the liquid inlet of the overflow valve is communicated with the second cooling liquid passage, and the liquid outlet of the overflow valve is communicated with the overflow container.

Further, the heat dissipation part comprises a fan heat exchanger which is communicated with the circulation loop; the number of the fan heat exchangers is two, and the two fan heat exchangers are connected in parallel to the circulating loop;

the heat exchange portion comprises a plate heat exchanger, and the plate heat exchanger is used for exchanging heat between the cooling liquid and the lubricating oil.

Further, the circulation loop further comprises:

the liquid inlet and outlet valves are used for introducing or discharging the cooling liquid;

a first temperature sensor disposed between the heat exchanging portion and the heat dissipating portion, the first temperature sensor being configured to measure a temperature of the coolant at the liquid outlet of the heat exchanging portion;

and the second exhaust valve is arranged between the heat exchanging part and the heat radiating part.

An offshore wind turbine comprising a cooling device as described above for cooling of the lubrication fluid of the gearbox.

The invention has the beneficial effects that: the circulating loop is used for communicating the heat exchanging part, the radiating part and the power part, the power part is used for driving the cooling liquid in the circulating loop, the cooling liquid absorbs the heat of the lubricating oil through the radiating part, and the radiating part is used for exchanging the heat of the cooling liquid to the outside, so that the heat of the lubricating oil is exchanged to the outside, and the cooling of the lubricating oil is realized. The cooling device is compact in structure and high in heat exchange efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a cooling device according to a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of a cooling apparatus according to a preferred embodiment of the present invention.

Description of reference numerals:

cooling device 100

Circulation loop 11

Heat exchanging part 12

Power section 13

Motor 131

Cooling pump 132

Liquid inlet and outlet valve 14

First temperature sensor 15

Second exhaust valve 16

Ball valve 17

Tee joint 18

Support 19

First integrated block assembly 20

Pressure gauge 21

First pressure sensor 22

First pressure tap 23

First exhaust valve 24

Check valve 25

Power unit 30

Second integrated block assembly 40

Expansion tank assembly 41

Second pressure sensor 42

Second pressure tap 43

Second temperature sensor 44

Relief valve 45

Spill container 46

Heat dissipation part 50

Detailed Description

The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.

As shown in fig. 1 and 2, the cooling device 100 of the present embodiment is used for cooling lubricating fluid of a gearbox of an offshore wind turbine, the cooling device 100 includes a circulation circuit 11, the circulation circuit 11 is used for flowing cooling fluid, and a heat exchanging part 12, a heat radiating part 50 and a power part 13 are sequentially arranged on the circulation circuit 11; the heat exchanging part 12 is used for exchanging heat between the cooling liquid and the lubricating oil; the heat dissipation portion 50 is used for the coolant to exchange heat to the outside; the power unit 13 is used to drive the coolant to flow in the circulation circuit 11. In the present embodiment, the heat exchanging unit 12, the heat radiating unit 50, and the power unit 13 are communicated with each other by the circulation circuit 11, the coolant in the circulation circuit 11 is driven by the power unit 13, the heat of the lubricating oil is absorbed by the coolant through the heat radiating unit 50, and the heat of the coolant is exchanged to the outside by the heat radiating unit 50, so that the heat of the lubricating oil is exchanged to the outside, thereby cooling the lubricating oil. The cooling device 100 of the embodiment has a compact structure and high heat exchange efficiency. In a specific embodiment, the heat exchanging unit 12 and the heat radiating unit 50 in the cooling device 100 can be started and stopped synchronously.

As shown in fig. 1 and 2, the cooling device 100 further includes a bracket 19, and the bracket 19 may specifically support the expansion tank assembly 41, the motor 131, and other components. A tee 18 is also provided between the two first integrated block assemblies 20.

The cooling device 100 of the present embodiment adopts a system closed design, and the present embodiment does not have a separate cooling storage container in structure, that is, a cooling liquid storage tank is omitted, so that not only is the space occupied by the cooling device 100 greatly saved, but also the usage amount of the cooling liquid is effectively reduced, thereby reducing the cost of the cooling device 100. The cooling device 100 of the present embodiment is small and lightweight. The cooling device 100 of the present embodiment adopts a modular design concept, so that it has a compact structure, occupies a small space, and is convenient for assembly and maintenance. The cooling device 100 of the embodiment has the remarkable characteristics of high efficiency, energy conservation, economy, high cooling efficiency, small space volume, light weight, less usage amount of cooling liquid and the like. The cooling device is extremely suitable for cooling lubricating liquid of a gearbox of an offshore wind turbine. In a specific embodiment, the cooling liquid may be ethanol, water, or other liquid.

The embodiment can also be an offshore wind turbine, which comprises the cooling device 100 as above, wherein the cooling device 100 is used for cooling the lubricating liquid of the gearbox.

In one embodiment, the power unit 13 includes a motor 131 and a cooling pump 132, the motor 131 is drivingly connected to the cooling pump 132, the cooling pump 132 is in communication with the circulation circuit 11, and the cooling pump 132 is used for driving the cooling fluid in the circulation circuit 11.

As a preferred embodiment, the cooling device 100 further includes a first integrated block assembly 20, a first cooling liquid passage is disposed in the first integrated block assembly 20, a liquid inlet of the first cooling liquid passage is communicated with a liquid outlet of the power portion 13, and a liquid outlet of the first cooling liquid passage is communicated with the heat exchanging portion 12.

In a preferred embodiment, the first integrated block assembly 20 further comprises a pressure gauge 21, and the pressure gauge 21 is in communication with the first coolant passage. The first integrated block assembly 20 further includes a first pressure sensor 22, the first pressure sensor 22 being in communication with the first coolant passage; the first pressure sensor 22 is used for measuring the pressure of the first cooling liquid channel, the first pressure sensor 22 is also connected with an electronic control system of the wind driven generator, and the first pressure sensor 22 is used for transmitting a signal of the pressure magnitude to the electronic control system. The first integrated block assembly 20 also includes a first pressure tap 23, the first pressure tap 23 being in communication with the first coolant passage. The first integrated block assembly 20 also includes a first exhaust valve 24, the first exhaust valve 24 being in communication with the first coolant passage. The first integrated block assembly 20 also includes a check valve 25, the check valve 25 being in communication with the first coolant passage. As a specific embodiment, the pressure gauge 21 can directly read the pressure value of the cooling device 100. The first pressure sensor 22 can transmit the pressure value of the cooling device 100 to an electronic control system human-computer interaction interface of the wind driven generator in real time. The first pressure tap 23 can measure the operating pressure in the circulation circuit 11 at any time when the cooling device 100 is serviced. The first exhaust valve 24 may exhaust air from the first integrated block assembly 20.

In order to improve the reliability of the cooling device 100, a power unit 13 and a first integrated block 20 form a set of power unit 30, the cooling device 100 includes two sets of power units 30, the two sets of power units 30 are connected in parallel, and a liquid inlet and a liquid outlet of each set of power unit 30 are respectively communicated with the circulation loop 11.

As a preferred embodiment, the cooling apparatus 100 further includes a second integrated block assembly 40, a second cooling liquid passage is disposed in the second integrated block assembly 40, a liquid inlet of the second cooling liquid passage is communicated with a liquid outlet of the heat dissipating portion 50, and a liquid outlet of the second cooling liquid passage is communicated with a liquid inlet of the power portion 13.

As a preferred embodiment, the second integrated block assembly 40 further includes an expansion tank assembly 41, the expansion tank assembly 41 being in communication with the second coolant passage. The second integrated block assembly 40 further includes a second pressure sensor 42, the second pressure sensor 42 is communicated with the second cooling liquid passage, the second pressure sensor 42 is used for measuring the pressure of the second cooling liquid passage at the liquid inlet of the expansion tank assembly 41, the second pressure sensor 42 is further connected with an electronic control system of the wind power generator, and the second pressure sensor 42 is used for transmitting a signal of the pressure to the electronic control system. The second integrated block assembly 40 also includes a second pressure tap 43, the second pressure tap 43 being in communication with the second coolant passage. The second integrated block assembly 40 further includes a second temperature sensor 44, the second temperature sensor 44 being in communication with the second coolant passage, the temperature sensor being for measuring the temperature of the coolant at the outlet of the heat sink portion 50. The second integrated block assembly 40 further comprises an overflow valve 45, a liquid inlet of the overflow valve 45 is communicated with the second cooling liquid passage, and a liquid outlet of the overflow valve 45 is communicated with an overflow container 46. In the present embodiment, the expansion tank assembly 41 functions to: when the injected cooling liquid is excessive, the expansion tank assembly 41 may store the surplus cooling liquid for the cooling device 100; when the cooling device 100 is short of cooling liquid, the expansion tank assembly 41 can be replenished with cooling liquid. In addition, the expansion tank assembly 41 may also absorb flow and pressure pulsations of the cooling device 100. The relief valve 45 of the present embodiment may be used to set the maximum pressure of the coolant in the cooling device 100, while the pressure setting of the relief valve 45 may be measured at the second pressure measuring connection 43. When the cooling liquid pressure in the cooling device 100 is higher than the set value, the relief valve 45 is opened to release the cooling liquid, and the released cooling liquid is recovered in the relief tank 46. The spill container 46 may be a plastic bottle. When the amount of the coolant in the cooling device 100 is too large, the relief valve 45 can adjust the total amount of the coolant in the cooling device 100 to the optimum amount. The second pressure tap 43 can measure the operating pressure in the circulation circuit 11 at any time when the cooling device 100 is serviced. The second pressure sensor 42 can monitor the pressure of the cooling liquid at the inlet of the expansion tank assembly 41 in real time, and can also transmit the pressure value of the cooling device 100 to the human-computer interaction interface of the electric control system of the wind driven generator in real time. The second temperature sensor 44 may monitor the temperature of the cooling liquid from the liquid outlet of the heat-radiating portion 50 in real time.

As a specific embodiment, the heat dissipation portion 50 includes a fan heat exchanger, which is in communication with the circulation loop 11; the number of the fan heat exchangers is two, and the two sets of the fan heat exchangers are connected in parallel to the circulation loop 11. The heat exchanging portion 12 includes a plate heat exchanger for exchanging heat between the coolant and the lubricating oil. The plate heat exchanger and the fan heat exchanger are not shown in fig. 1.

In a preferred embodiment, the circulation loop 11 further comprises a plurality of liquid inlet and outlet valves 14, and the liquid inlet and outlet valves 14 are used for introducing or discharging the cooling liquid. The circulation circuit 11 further includes a first temperature sensor 15, the first temperature sensor 15 is disposed between the heat exchanging portion 12 and the heat radiating portion 50, and the first temperature sensor 15 is configured to measure the temperature of the coolant at the liquid outlet of the heat exchanging portion 12. The circulation loop 11 further includes a second exhaust valve 16, and the second exhaust valve 16 is disposed between the heat exchanging portion 12 and the heat radiating portion 50. Specifically, two liquid inlet and outlet valves 14 are provided in this embodiment, and the two valves may be used as backup for each other to prevent failure of one valve. The second exhaust valve 16 may exhaust air in the circulation loop 11. As a specific embodiment, the first temperature sensor 15 may monitor the temperature of the cooling liquid from the liquid outlet of the heat exchanging part 12 in real time.

As an embodiment, the cooling liquid can be injected from the liquid inlet and outlet valve 14, and the ball valve 17 is opened to completely open the whole circulation loop 11. When the temperature of the lubricating oil reaches a certain value, the cooling pump 132, the motor 131 and the fan heat exchanger are started, and the cooling pump 132 and the fan heat exchanger start to operate. The cooling liquid is discharged by the cooling pump 132, passes through the check valve 25, passes through the ball valve 17, is converged, and then immediately enters the plate heat exchanger for the lubricating oil, so that the lubricating oil is cooled. And then, the cooling liquid is divided again, the fan heat exchanger dissipates heat of the cooling liquid, after cooling is completed, the cooled cooling liquid can be filtered by the filter again, the filtered cooling liquid repeatedly enters the ball valve 17 and then enters the cooling pump 132 for circulating cooling, and the process is repeated.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.