阅读说明：本技术 动力装置及风力发电机组 (Power device and wind generating set ) 是由 广林 赵子晨 陈玉峰 吴安吉 于 2020-05-22 设计创作，主要内容包括：本发明公开了一种动力装置及风力发电机组,动力装置用于驱动待润滑装置的润滑油的流动,动力装置包括利用管道顺次连通的润滑油入口、动力部、波纹管、集成块、及润滑油出口；润滑油入口与待润滑装置相连通,润滑油自润滑油入口进入动力装置；动力部作用于润滑油,以使润滑油流动；动力部与集成块之间通过波纹管相连通；集成块上设有过滤装置,过滤装置用于过滤润滑油中的杂质；润滑油出口与待润滑装置相连通,经过滤后的润滑油自润滑油出口进入待润滑装置。风力发电机组包括上述的动力装置。通过在动力部与集成块之间设置波纹管,利用波纹管吸收了动力部正常工作产生的振动,避免了振动传递至系统的其他部件,能够提高风力发电机组的可靠性。(The invention discloses a power device and a wind generating set, wherein the power device is used for driving lubricating oil of a device to be lubricated to flow and comprises a lubricating oil inlet, a power part, a corrugated pipe, an integrated block and a lubricating oil outlet which are sequentially communicated by utilizing a pipeline; the lubricating oil inlet is communicated with a device to be lubricated, and the lubricating oil self-lubricating oil inlet enters the power device; the power part acts on the lubricating oil to enable the lubricating oil to flow; the power part is communicated with the integrated block through a corrugated pipe; the integrated block is provided with a filtering device which is used for filtering impurities in the lubricating oil; the lubricating oil outlet is communicated with the device to be lubricated, and the filtered lubricating oil self-lubricating oil outlet enters the device to be lubricated. The wind generating set comprises the power device. The corrugated pipe is arranged between the power part and the integrated block, so that the vibration generated by the normal work of the power part is absorbed by the corrugated pipe, the vibration is prevented from being transmitted to other parts of the system, and the reliability of the wind generating set can be improved.)

1. A power device is used for driving the flow of lubricating oil of a device to be lubricated and is characterized by comprising a lubricating oil inlet, a power part, a corrugated pipe, an integrated block and a lubricating oil outlet which are sequentially communicated by using a pipeline;

the lubricating oil inlet is communicated with the device to be lubricated, and the lubricating oil enters the power device from the lubricating oil inlet;

the power part acts on the lubricating oil to make the lubricating oil flow;

the power part is communicated with the integrated block through the corrugated pipe;

the integrated block is provided with a filtering device, and the filtering device is used for filtering impurities in the lubricating oil;

the lubricating oil outlet is communicated with the device to be lubricated, and the filtered lubricating oil enters the device to be lubricated from the lubricating oil outlet.

2. The power device of claim 1, wherein the power section comprises a first pump group and a second pump group connected in parallel; the integrated block also comprises a first one-way valve and a second one-way valve;

the liquid inlet of the first pump group is communicated with the device to be lubricated, and the liquid outlet of the first pump group is communicated with the first one-way valve;

the liquid inlet of the second pump group is communicated with the device to be lubricated, and the liquid outlet of the second pump group is communicated with the second one-way valve;

and the lubricating oil enters the filtering device after passing through the first one-way valve and the second one-way valve.

3. The power unit according to claim 2, wherein the manifold block further comprises an overflow valve, a liquid inlet of the overflow valve is communicated with a liquid outlet of the first check valve and a liquid outlet of the second check valve, and a liquid outlet of the overflow valve is communicated with the device to be lubricated.

4. The power unit according to claim 1, wherein the filtering device comprises a single-cylinder double-precision filter, an inlet of the single-cylinder double-precision filter is communicated with the outlet of the power part, and an outlet of the single-cylinder double-precision filter is communicated with the device to be lubricated.

5. The power device according to claim 4, wherein the filtering device comprises a first filter element and a second filter element which are communicated in sequence, the filtering accuracy of the first filter element is in a range of 8-15 μm, the filtering accuracy of the second filter element is in a range of 40-60 μm, the filtering device further comprises a second overflow valve, a liquid inlet of the second overflow valve is communicated with a liquid inlet of the first filter element, and a liquid outlet of the second overflow valve is communicated with a liquid outlet of the first filter element.

6. The power plant of claim 5, wherein the manifold further comprises a differential pressure transmitter configured to detect a differential pressure across the first filter element and generate a differential pressure signal, the differential pressure transmitter further communicatively coupled to a monitoring system, wherein the monitoring system prompts replacement of the first filter element when the differential pressure signal is greater than a predetermined value.

7. The power plant of claim 1, wherein the power plant further comprises a heat dissipation assembly, the integrated package further comprises a temperature controlled valve, a liquid inlet of the temperature controlled valve is communicated with a liquid outlet of the filtering device, a first liquid outlet of the temperature controlled valve is communicated with the device to be lubricated, a second liquid outlet of the temperature controlled valve is communicated with the heat dissipation assembly, and the heat dissipation assembly is used for reducing the temperature of the lubricating oil.

8. The power device of claim 1, wherein the manifold block further comprises a first pressure tap, an oil inlet of the first pressure tap being in communication with an oil inlet of the filter unit;

the integrated block also comprises a second pressure measuring joint, and an oil inlet of the second pressure measuring joint is communicated with the lubricating oil outlet;

and a third pressure measuring joint is arranged at the top of the filtering device and is used for communicating the device to be lubricated so as to discharge gas at the upper part of the filtering device.

9. The power plant of claim 1, wherein the bellows is a stainless steel metal bellows.

10. A wind power plant characterized in that it comprises a power plant according to any one of claims 1-9.

Technical Field

The invention relates to the field of wind driven generators, in particular to a power device and a wind driven generator set.

Background

The wind generating set is an electric power device which converts wind energy into mechanical work, the mechanical work drives a rotor to rotate, and alternating current is finally output. The gearbox of the offshore wind generating set needs to be lubricated, and lubricating oil of the gearbox generally circulates under the action of a power part. The power part can be a motor-pump set. The motor-pump package is typically connected directly to the lubrication system using hard lubrication tubing. Therefore, the vibration generated by the normal operation of the motor pump set is directly transmitted to the lubricating system, abnormal sound is possibly caused, and the safe operation of the wind generating set is not facilitated.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a power device and a wind generating set.

The invention is realized by the following technical scheme:

a power device is used for driving the flow of lubricating oil of a device to be lubricated, and comprises a lubricating oil inlet, a power part, a corrugated pipe, an integrated block and a lubricating oil outlet which are sequentially communicated by using a pipeline;

the lubricating oil inlet is communicated with the device to be lubricated, and the lubricating oil enters the power device from the lubricating oil inlet;

the power part acts on the lubricating oil to make the lubricating oil flow;

the power part is communicated with the integrated block through the corrugated pipe;

the integrated block is provided with a filtering device, and the filtering device is used for filtering impurities in the lubricating oil;

the lubricating oil outlet is communicated with the device to be lubricated, and the filtered lubricating oil enters the device to be lubricated from the lubricating oil outlet.

Further, the power part comprises a first pump group and a second pump group which are connected in parallel; the integrated block also comprises a first one-way valve and a second one-way valve;

the liquid inlet of the first pump group is communicated with the device to be lubricated, and the liquid outlet of the first pump group is communicated with the first one-way valve;

the liquid inlet of the second pump group is communicated with the device to be lubricated, and the liquid outlet of the second pump group is communicated with the second one-way valve;

and the lubricating oil enters the filtering device after passing through the first one-way valve and the second one-way valve.

Furthermore, the integrated block further comprises an overflow valve, wherein a liquid inlet of the overflow valve is communicated with a liquid outlet of the first one-way valve and a liquid outlet of the second one-way valve, and a liquid outlet of the overflow valve is communicated with the device to be lubricated.

Further, the filtering device comprises a single-cylinder double-precision filter, a liquid inlet of the single-cylinder double-precision filter is communicated with a liquid outlet of the power part, and a liquid outlet of the single-cylinder double-precision filter is communicated with the device to be lubricated.

Furthermore, the filtering device comprises a first filter element and a second filter element which are communicated in sequence, the filtering precision range of the first filter element is 8-15 μm, the filtering precision range of the second filter element is 40-60 μm, the filtering device further comprises a second overflow valve, a liquid inlet of the second overflow valve is communicated with a liquid inlet of the first filter element, and a liquid outlet of the second overflow valve is communicated with a liquid outlet of the first filter element.

Furthermore, the integrated block further comprises a differential pressure signal transmitter, wherein the differential pressure signal transmitter is used for detecting the differential pressure between the front and the back of the first filter element and generating a differential pressure signal, the differential pressure signal transmitter is further in communication connection with a monitoring system, and when the differential pressure signal is larger than a preset value, the monitoring system prompts replacement of the first filter element.

Further, power device still includes radiator unit, the integrated package still includes the temperature-sensing valve, the inlet of temperature-sensing valve with filter equipment's liquid outlet is linked together, the first liquid outlet of temperature-sensing valve with treat that lubricating arrangement is linked together, the second liquid outlet of temperature-sensing valve with radiator unit is linked together, radiator unit is used for reducing the temperature of lubricating oil.

Furthermore, the integrated block also comprises a first pressure measuring joint, and an oil inlet of the first pressure measuring joint is communicated with an oil inlet of the filtering device;

the integrated block also comprises a second pressure measuring joint, and an oil inlet of the second pressure measuring joint is communicated with the lubricating oil outlet;

and a third pressure measuring joint is arranged at the top of the filtering device and is used for communicating the device to be lubricated so as to discharge gas at the upper part of the filtering device.

Further, the corrugated pipe is a stainless steel metal corrugated pipe.

A wind power plant comprising a power plant as described above.

The invention has the beneficial effects that: the corrugated pipe is arranged between the power part and the integrated block, so that the vibration generated by the normal work of the power part is absorbed by the corrugated pipe, the vibration is prevented from being transmitted to other parts of the system, and the reliability of the wind generating set can be improved.

Drawings

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

Fig. 2 is another schematic structural diagram of the power device according to the preferred embodiment of the invention.

Fig. 3 is a schematic diagram of a power plant in accordance with a preferred embodiment of the present invention.

Description of reference numerals:

power plant 100

Device to be lubricated 11

Lubricating oil inlet 12

Power section 13

First pump group 131

First check valve 132

Second pump group 133

Second check valve 134

Corrugated pipe 14

Lubricating oil outlet 15

Heat sink assembly 16

Radiator block oil inlet 161

Integrated block 20

Filter device 21

First filter element 211

Second filter element 212

Third check valve 213

Overflow valve

Differential pressure signal transmitter 23

Thermo valve 24

First liquid outlet 241

Second liquid outlet 242

First pressure tap 25

Second pressure tap 26

Third pressure tap 27

Oil drain valve 31

Pre-filter sample point 32

Filtered sample point 33

Mounting bracket 34

Lifting point 35

Exhaust point 36

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 to 3, the present embodiment discloses a power device 100, the power device 100 is used for driving the flow of the lubricating oil of the device to be lubricated 11, the power device 100 comprises a lubricating oil inlet 12, a power part 13, a corrugated pipe 14, a manifold block 20 and a lubricating oil outlet 15 which are sequentially communicated by a pipeline; the lubricating oil inlet 12 is communicated with the device to be lubricated 11, and the lubricating oil self-lubricating oil inlet 12 enters the power device 100; the power portion 13 acts on the lubricating oil to flow the lubricating oil; the power part 13 is communicated with the manifold block 20 through a corrugated pipe 14; the integrated block 20 is provided with a filtering device 21, and the filtering device 21 is used for filtering impurities in the lubricating oil; the lubricating oil outlet 15 is communicated with the device to be lubricated 11, and the filtered lubricating oil enters the device to be lubricated 11 from the lubricating oil outlet 15. In the power device 100 of the embodiment, the corrugated pipe 14 is arranged between the power part 13 and the manifold block 20, so that the corrugated pipe 14 absorbs the vibration generated by the normal operation of the power part 13, the vibration is prevented from being transmitted to other parts of the system, and the reliability of the wind generating set can be improved. In one specific embodiment, the bellows 14 is a stainless steel metal bellows.

The embodiment also discloses a wind generating set, which comprises the power device 100. The embodiment can reduce the adverse effect of the power part 13 on the wind generating set and improve the reliability of the wind generating set.

As an embodiment, the power unit 13 includes a first pump group 131 and a second pump group 133 connected in parallel; the manifold block 20 further includes a first check valve 132 and a second check valve 134; a liquid inlet of the first pump group 131 is communicated with the device to be lubricated 11, and a liquid outlet of the first pump group 131 is communicated with the first one-way valve 132; the liquid inlet of the second pump set 133 is communicated with the device to be lubricated 11, and the liquid outlet of the second pump set 133 is communicated with the second one-way valve 134; the lubricating oil passes through the first check valve 132 and the second check valve 134 and then enters the filter device 21.

In order to improve the safety of the power device 100, the integrated block 20 further includes an overflow valve 22, a liquid inlet of the overflow valve 22 is communicated with a liquid outlet of the first check valve 132 and a liquid outlet of the second check valve 134, and a liquid outlet of the overflow valve 22 is communicated with the device to be lubricated 11.

The first pump set 131 and the second pump set 133 are used for supplying oil to the power device 100 to provide power for the whole system. The first pump group 131 and the second pump group 133 include an electric motor and an oil pump, respectively. The motor can adopt a double-speed motor, so that the high speed and the low speed can be switched according to actual needs, and further, the full utilization of energy sources is realized. As an embodiment, the pump outlet flow rate can be 58L/min and 116L/min at low speed and high speed, respectively. The first check valve 132 and the second check valve 134 are respectively added to the two paths of lubricating oil of the first pump set 131 and the second pump set 133 before entering the integrated block 20, so that mutual interference between two oil supply power sources is avoided, and conflict between respective flow rates is prevented. On the other hand, when the flow rate of the required lubricating oil is relatively small, that is, when only one of the two paths supplies the flow rate, the first check valve 132 and the second check valve 134 can prevent the motor whose other path is stopped from rotating reversely, thereby avoiding the insufficient utilization of the flow rate of the lubricating oil. Finally, the first check valve 132 and the second check valve 134 can also prevent the flow of the lubricating oil from impacting to generate a pulse pressure, which can damage the whole machine. By arranging the overflow valve, when the pressure of the system is more than or equal to 12bar, the overflow valve is opened, so that the oil is decompressed and returned to the device to be lubricated 11.

In order to improve the filtering precision, the filtering device 21 comprises a single-cylinder double-precision filter, a liquid inlet of the single-cylinder double-precision filter is communicated with a liquid outlet of the power part 13, and a liquid outlet of the single-cylinder double-precision filter is communicated with the device to be lubricated 11. As a specific embodiment, the filtering apparatus 21 includes a first filter element 211 and a second filter element 212 which are sequentially communicated, a filtering accuracy of the first filter element 211 ranges from 8 μm to 15 μm, a filtering accuracy of the second filter element 212 ranges from 40 μm to 60 μm, the filtering apparatus 21 further includes a second overflow valve, a liquid inlet of the second overflow valve is communicated with a liquid inlet of the first filter element 211, and a liquid outlet of the second overflow valve is communicated with a liquid outlet of the first filter element 211.

As a preferred embodiment, the manifold block 20 further includes a differential pressure transmitter 23, the differential pressure transmitter 23 is configured to detect a differential pressure between the front and the back of the first filter element 211 and generate a differential pressure signal, the differential pressure transmitter 23 is further in communication connection with a monitoring system, the monitoring system is configured to receive the differential pressure signal and make a judgment, and when the differential pressure signal is greater than a preset value, the monitoring system prompts to replace the first filter element 211.

The first filter element 211 may have a filtration accuracy of 10 μm, and the second filter element 212 may have a filtration accuracy of 50 μm. The lubricating oil that power portion 13 was inhaled at every turn all filters through filter equipment 21, later reentrant gear box to lubricated flank of tooth, the lubricating oil after the filtration flows to each tooth's flank of tooth through distributor, thereby can take away the slight wearing and tearing granule that the gear produced at the operation in-process in time, and then prevent that this granule from being drawn into by gear mechanism secondary, prevent to aggravate flank of tooth wearing and tearing. The wearing and tearing granule of taking away is inhaled by power portion 13 once more to get into filter equipment 21, and then adhere to on filter equipment 21, then can centralized processing, along with the granule of one side interception of filter equipment 21 is more and more, can lead to filter equipment 21 both sides to pass through the pressure differential increase when lubricating oil, detects this pressure differential value through utilizing pressure differential signaling device 23, and then can remind whether need change new filter core.

Specifically, when the filter device 21 is in a normal working state, the lubricating oil flows into the first filter element 211 with the filtering precision of 10 μm for filtering, and when the pressure difference between two sides of the first filter element 211 is not less than 4bar after the first filter element 211 is blocked, the third check valve 213 is opened, and the lubricating oil directly flows into the second filter element 212 with the filtering precision of 50 μm for filtering. The pressure difference between the front and the back of the first filter element 211 is detected and monitored by a differential pressure transmitter, when the differential pressure is larger than or equal to a differential pressure alarm point, namely a preset value, the differential pressure transmitter transmits a differential pressure signal, and a monitoring system receives the differential pressure signal and prompts the filter element to be replaced. In addition, when the lubricating system is just started, and the temperature of the lubricating oil does not reach the normal working oil temperature of 40 ℃, the viscosity of the lubricating oil is high, a relatively high pressure difference may be formed when the lubricating oil passes through the first filter element 211, and at this time, the signal of the pressure difference signal transmitter 23 is only used as a reference and is not used as a signal for replacing the first filter element 211.

As a preferred embodiment, the manifold block 20 further includes a first pressure measuring joint 25, and an oil inlet of the first pressure measuring joint 25 is communicated with an oil inlet of the filtering device 21. The filter unit 21 is preceded by a first pressure tap 25, which first pressure tap 25 can be connected to a pressure gauge for measuring the system pressure. The top of the filter unit 21 is provided with a third pressure tap 27, the third pressure tap 27 being used for communicating with the device to be lubricated 11 for venting the gas in the upper part of the filter unit 21. A third pressure tap 27 at the top of the filter unit 21 may be used for connection of a pressure hose and communication with the gearbox for venting gas from the upper part of the filter unit.

In order to facilitate heat dissipation, the power device 100 further includes a heat dissipation assembly 16, the integrated package 20 further includes a temperature control valve 24, a liquid inlet of the temperature control valve 24 is communicated with a liquid outlet of the filtering device 21, a first liquid outlet 241 of the temperature control valve 24 is communicated with the device to be lubricated 11, a second liquid outlet 242 of the temperature control valve 24 is communicated with a heat dissipation assembly oil inlet 161 of the heat dissipation assembly 16, and the heat dissipation assembly 16 is configured to reduce the temperature of the lubricating oil.

The lubricating oil passes through the filter device 21 and then flows to the thermo valve 24, and the thermo valve 24 controls the flow direction of the lubricating oil according to the temperature of the lubricating oil. When the temperature of the lubricating oil is lower than the opening temperature of the temperature control valve 24, the lubricating oil respectively enters the device to be lubricated 11 and the heat dissipation assembly 16; when the temperature of the lubricating oil is higher than the opening temperature of the temperature control valve 24, the temperature control valve 24 starts to act, so that the lubricating oil enters the gearbox after being cooled by the heat sink 16. Specifically, when the temperature of the lubricating oil is lower than 45 ℃, the lubricating oil enters the device to be lubricated 11 through the first liquid outlet 241, and meanwhile, the lubricating oil also enters the heat dissipation assembly 16 through the second liquid outlet 242. When the temperature of the lubricating oil is 45-60 ℃, the lubricating oil flows into the device to be lubricated 11 and the heat dissipation assembly 16 simultaneously, but the flow rate of the lubricating oil flowing into the device to be lubricated 11 through the first liquid outlet 241 is reduced; the flow rate of the lubricant flowing into the heat radiation module 16 through the second liquid outlet 242 is increased. When the temperature of the lubricating oil is above 60 ℃, the lubricating oil only flows into the heat dissipation assembly 16 through the second liquid outlet 242; the first liquid outlets 241 flowing into the side of the device to be lubricated 11 are all closed.

In one embodiment, the heat sink assembly 16 may include air cooler fins made of an aluminum alloy. The air cooler fins are used for cooling lubricating oil. This radiator unit 16 can also include the motor, high performance axial fan, fin etc. and when the oil temperature of lubricating oil was higher than the setting value, radiator unit 16's motor started to drive the fan, the fan bloied to the fin, and the heat of the lubricating oil in the fin is taken away by the wind, thereby realizes the cooling of lubricating oil. When the temperature of the lubricating oil cools below the set point, the motor is turned off. The fans in the heat dissipation assembly 16 can be selected according to the power of the lubricated gear box and the heating power of the gear box, so that a fan with proper heat dissipation capacity can be determined, and a plurality of fans can be sequentially connected in parallel to increase the heat dissipation speed, so that the actual heat dissipation requirement can be met.

The manifold block 20 further comprises a second pressure measuring joint 26, and an oil inlet of the second pressure measuring joint 26 is communicated with the lubricating oil outlet 15; so that the pressure of the lubricating oil of the device to be lubricated 11 can be detected. The power plant 100 further comprises a mounting bracket 34, a lifting point 35. The filter unit 21 and the manifold block 20 may each be provided with a venting point 36. The manifold block 20 may also be provided with pre-filter sampling points 32 and post-filter sampling points 33 for sampling the lubricant. The manifold block 20 may also be provided with a drain valve 31.

As an embodiment, the device to be lubricated 11 may be a gear speed increasing and reducing box. The power device 100 of this embodiment also can be used for the gear acceleration rate of other trades, the reducing gear box, power device 100 not only can carry out sufficient lubrication for the inside gear of gear box, indirectly improves the transmission efficiency of gear box, on the other hand, in lubricating oil self-loopa in-process, can take away the heat that produces in the gear operation process when lubricating oil flows through each gear, this heat is dispelled through outside radiator unit 16, thereby can prevent that high speed or heavy load gear from producing the flank of tooth veneer phenomenon under high temperature, and then improve the reliability of gear box operation. The working medium of the power plant 100 of the present embodiment may be a viscosity grade VG320 industrial gear oil or other lubricating oil of comparable viscosity.

This embodiment only is equipped with an integrated package 20, has reduced the use quantity of integrated package 20, is favorable to avoiding using O type sealing washer between integrated package 20 to reduce possible oil leak point, and then increase power device 100 reliability, and power device 100's structural configuration is reasonable, and the interval is big between each individual function, and later maintenance is more convenient.

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.