阅读说明：本技术 将转动动力转换成液压能的装置、风能转液压能装置及发电系统 (Device for converting rotational power into hydraulic energy, wind energy-to-hydraulic energy device and power generation system ) 是由 王军 魏康康 王知优 赵金辉 于 2020-12-14 设计创作，主要内容包括：本发明公开了一种将转动动力转换成液压能的装置,包括：一动力输入轴,用于接收外部动力而产生一回转运动；至少一转动件,转动件固接在动力输入轴上而使转动件能伴随动力输入轴做回转运动,转动件上具有以动力输入轴为轴心并沿圆周方向延伸的高低起伏的波形面；以及多个单缸柱塞泵,单缸柱塞泵布置在波形面的外周,单缸柱塞泵的柱塞的外端抵在波形面上,在转动件做回转运动时,柱塞与波形面的接触能在波形面的波峰与波谷之间交替切换,从而驱使柱塞往复运动进行压油和吸油。另外提供一种风能转液压能装置及发电系统。本发明的装置结构简单,稳定性高,承载能力强,动力输出大,能够达到高压和大流量要求。(The invention discloses a device for converting rotary power into hydraulic energy, which comprises: the power input shaft is used for receiving external power to generate rotary motion; at least one rotating piece which is fixedly connected on the power input shaft and enables the rotating piece to rotate along with the power input shaft, and the rotating piece is provided with a wavy surface which takes the power input shaft as an axis and extends along the circumferential direction; and the single-cylinder plunger pump is arranged on the periphery of the wavy surface, the outer end of the plunger of the single-cylinder plunger pump is abutted against the wavy surface, and when the rotating part rotates, the contact between the plunger and the wavy surface can be alternately switched between the wave crest and the wave trough of the wavy surface, so that the plunger is driven to reciprocate to press oil and absorb oil. In addition, a wind energy-to-hydraulic energy device and a power generation system are provided. The device has the advantages of simple structure, high stability, strong bearing capacity and large power output, and can meet the requirements of high pressure and large flow.)

1. Apparatus for converting rotary power into hydraulic energy, comprising:

the power input shaft is used for receiving external rotating power to generate rotary motion;

at least one rotating piece, the rotating piece is fixedly connected to the power input shaft so that the rotating piece can rotate along with the power input shaft, and the rotating piece is provided with a wavy surface which takes the power input shaft as an axis and extends along the circumferential direction; and

the single-cylinder plunger pumps are arranged on the periphery of the wavy surface, the outer ends of the plungers of the single-cylinder plunger pumps abut against the wavy surface, and when the rotating piece rotates, the contact between the plungers and the wavy surface can be alternately switched between wave crests and wave troughs of the wavy surface to drive the plungers to reciprocate to press oil and absorb oil.

2. An apparatus for converting rotary power into hydraulic energy according to claim 1, wherein the plunger extends in a radial direction of the rotary member.

3. A device for converting rotational power to hydraulic energy as claimed in claim 1 wherein the radial distance between the peaks and troughs of the undulating surface is equal to the working stroke of the plunger.

4. The apparatus of claim 1, wherein the rotating member has two or more.

5. An apparatus for converting rotary power into hydraulic energy as claimed in claim 1, wherein the outer end of the plunger is provided with a roller or a gimbaled ball.

6. A device for converting rotational power into hydraulic power, comprising the device for converting rotational power into hydraulic power according to any one of claims 1 to 5, and further comprising a wind catching device for receiving the wind to generate a rotational power, wherein the wind catching device is in driving connection with the power input shaft.

7. The device of claim 6, wherein the wind-catching means comprises a plurality of blades, and the blades are uniformly distributed on the outer circumference of the power input shaft.

8. The power generation system is characterized by comprising the wind energy-to-hydraulic energy device according to claim 6, and further comprising a hydraulic motor and a generator set, wherein the hydraulic motor is in transmission connection with the generator set, the wind energy-to-hydraulic energy device is arranged at a high position, the hydraulic motor and the generator set are arranged at a low position, the wind energy-to-hydraulic energy device returns hydraulic oil to the hydraulic motor through an oil return pipe to drive the hydraulic motor to rotate, and the hydraulic oil output by the hydraulic motor is conveyed to the wind energy-to-hydraulic energy device through an oil inlet pipe.

Technical Field

The invention relates to the field of power conversion, in particular to a device for converting rotary power into hydraulic energy, a wind energy-to-hydraulic energy device and a power generation system.

Background

When the traditional oil pump is applied to a wind power generation system, the movement speed of the traditional oil pump is low due to the fact that the wind speed is not large, the flow of hydraulic oil is limited, and the application of the traditional oil pump in the wind power generation system is limited. In addition, the traditional oil pump has huge volume, high installation difficulty and complex structure; the traditional oil pump is easy to break down and not easy to maintain.

Disclosure of Invention

To solve one or more technical problems of the prior art, according to one aspect of the present disclosure, there is provided an apparatus for converting rotational power into hydraulic energy, the apparatus including:

the power input shaft is used for receiving external rotating power to generate rotary motion;

at least one rotating piece which is fixedly connected on the power input shaft and enables the rotating piece to rotate along with the power input shaft, and the rotating piece is provided with a wavy surface which takes the power input shaft as an axis and extends along the circumferential direction; and

the single-cylinder plunger pumps are arranged on the periphery of the wavy surface, the outer ends of the plungers of the single-cylinder plunger pumps abut against the wavy surface, and when the rotating piece rotates, the contact between the plungers and the wavy surface can be alternately switched between wave crests and wave troughs of the wavy surface to drive the plungers to reciprocate to press oil and absorb oil.

The beneficial effects of the embodiment are as follows: the rotary kinetic energy can be converted into hydraulic energy; a plurality of rotating parts can be connected on the power input shaft in series, and each rotating part can be provided with a plurality of single-cylinder plunger pumps and can also meet the requirement of large flow; the single-cylinder plunger pumps are independently installed, and the single-cylinder plunger pump is simple and firm in structure and can meet the high-pressure requirement; the single-cylinder plunger pump is simple and stable in structure, not prone to failure and convenient to detach, when a certain single-cylinder plunger pump fails, other single-cylinder plunger pumps are not affected, and only the single-cylinder plunger pump with the failure needs to be detached, so that maintenance is facilitated.

In some embodiments, the plunger extends in a radial direction of the rotational member. More component force of the acting force of the rotating part on the plunger piston can be along the radial direction of the plunger piston, so that the power utilization efficiency is improved, and the service life of the single-cylinder plunger pump is prolonged.

In some embodiments, the radial distance between the peaks and valleys of the undulating surface is equal to the working stroke of the plunger. When the device is used, the radial distance between the wave crest and the wave trough is reasonably selected according to the working stroke of the plunger of the single-cylinder plunger pump, and the maximum moving distance of the plunger is ensured and does not exceed the rated working stroke.

In some embodiments, there are two or more rotating members.

In some embodiments, the outer end of the plunger is provided with a roller or a gimbaled ball.

According to another aspect of the disclosure, the wind energy-to-hydraulic energy device comprises a device for converting rotational power into hydraulic energy, and further comprises a wind catching device for receiving the action of wind to generate rotational power, wherein the wind catching device is in transmission connection with the power input shaft.

The beneficial effects of the embodiment are as follows: the device for converting wind energy into hydraulic energy has the advantages of simple structure, high stability, strong bearing capacity and large power output, and can meet the requirements of high pressure and large flow.

In some embodiments, the wind catching means comprises a plurality of blades, which are evenly distributed over the circumference of the power input shaft.

According to another aspect of the present disclosure, a power generation system is provided, including a wind energy-to-hydraulic energy device, further including a hydraulic motor and a generator set, the wind energy-to-hydraulic energy device is disposed at a high place, the hydraulic motor and the generator set are disposed at a low place, the wind energy-to-hydraulic energy device returns hydraulic oil to the hydraulic motor through an oil return pipe to drive the hydraulic motor to rotate, and hydraulic oil output by the hydraulic motor is delivered to the wind energy-to-hydraulic energy device through an oil inlet pipe.

Drawings

Fig. 1 schematically shows a perspective view of an apparatus for converting rotational power into hydraulic energy according to an embodiment of the present disclosure.

Fig. 2 schematically shows a side view of an apparatus for converting rotational power into hydraulic energy according to an embodiment of the present disclosure.

Fig. 3 schematically shows a perspective view of a wind to hydraulic power apparatus according to an embodiment of the present disclosure.

Fig. 4 schematically shows a composition diagram of a power generation system according to an embodiment of the present disclosure.

Description of the symbols:

the wind power generation device comprises a power input shaft 1, a rotating part 2, a wavy surface 3, a single-cylinder plunger pump 4, a plunger 5, wave crests 6, wave troughs 7, a wind catching device 8, blades 9, a hydraulic motor 10, a generator set 11, a wind energy-to-hydraulic energy device 12, an oil return pipe 13 and an oil inlet pipe 14

Detailed Description

According to an aspect of the present disclosure, there is provided an apparatus for converting rotational power into hydraulic energy, referring to fig. 1 and 2, the apparatus comprising:

a power input shaft 1 for receiving external rotational power to generate a rotary motion;

at least one rotating piece 2, the rotating piece 2 is fixedly connected to the power input shaft 1 so that the rotating piece 2 can rotate along with the power input shaft 1, and the rotating piece 2 is provided with a wavy surface 3 which takes the power input shaft 1 as an axis and extends along the circumferential direction; and

the single-cylinder plunger pumps 4 are arranged on the periphery of the wavy surface 3, the outer ends of the plungers 5 of the single-cylinder plunger pumps 4 abut against the wavy surface 3, and when the rotating piece 2 rotates, the contact between the plungers 5 and the wavy surface 3 can be alternately switched between the wave crests 6 and the wave troughs 7 of the wavy surface 3, so that the plungers 5 are driven to reciprocate to press oil and absorb oil.

The power input shaft 1 is provided to be capable of rotating about its central axis. Specifically, the power input shaft 1 may be mounted on a bearing, and the power input shaft 1 can be easily rotated when the power input shaft 1 receives external rotational power.

The rotor 2 is connected to the power input shaft 1, for example, the rotor 2 has a circular shape, the power input shaft 1 passes through the center of the rotor 2 and extends in the normal direction, and the outer edge surface of the circular shape is provided with an undulated wavy surface 3. The drawings of the present disclosure show only schematically one of the simpler forms of the rotary member 2. For those skilled in the art, the rotating member 2 is not limited to the form provided in the drawings of the present disclosure, and for example, in order to reduce the weight of the rotating member 2, a middle portion of the rotating member 2 may be provided in a hollow shape with less material.

The waveform of the waveform surface 3 may be a sine wave or a cosine wave, but may be other forms of waveforms. The transition position of the wave-shaped face 3 adopts a round angle or an arc structure so that the plunger 5 can smoothly move on the surface of the wave-shaped face 3.

The single-cylinder plunger pump 4 is a device which realizes oil absorption and oil pressing by means of the volume change of a sealed working cavity through the reciprocating motion of a plunger 5 in a cylinder body of the single-cylinder plunger pump 4. Specifically, when the plunger 5 is pushed into the cylinder body of the single-cylinder plunger pump 4, the hydraulic oil in the sealed working cavity can be discharged from the oil outlet of the single-cylinder plunger pump 4; when the plunger 5 is loosened, the plunger 5 moves outwards, and external hydraulic oil enters the sealed working cavity from the oil inlet of the single-cylinder plunger pump 4. In some embodiments, a return spring is provided in the single cylinder plunger pump 4, which acts on the plunger 5 such that the plunger 5 is pushed outwards. In some embodiments, the spring may not be provided, and the plunger 5 is pushed outwards by the pressure of the hydraulic oil entering from the oil inlet.

The outer end of the plunger 5 has a spherical shape so that the outer end of the plunger 5 can slide on the surface of the wavy surface 3 more smoothly. Preferably, the outer end of the plunger 5 is provided with a roller or a ball joint which can roll, so that the friction and abrasion between the plunger 5 and the surface of the wave-shaped surface 3 can be reduced.

Preferably, the plunger 5 extends in the radial direction of the rotation member 2. More component force of the acting force of the rotating part 2 on the plunger 5 can be distributed along the radial direction of the plunger 5, which is beneficial to improving the power utilization efficiency and prolonging the service life of the single-cylinder plunger pump 4.

Preferably, the radial distance between the peaks 6 and the troughs 7 of the undulated face 3 is equal to the working stroke of the plunger 5. When the device is used, the radial distance between the wave crest 6 and the wave trough 7 is reasonably selected according to the working stroke of the plunger 5 of the single-cylinder plunger pump 4, and the movement distance of the plunger 5 is ensured to be maximized and not exceed the rated working stroke.

Two or more than two rotating parts 2 can be arranged on the power input shaft 1, and the number of the single-cylinder plunger pumps 4 around each rotating part 2 can be adjusted according to requirements.

When in use, the power input shaft 1 inputs a rotating power to the rotating part 2 to make the rotating part 2 perform a rotating motion, wherein the rotating power source can be wind power, a motor or water power. In the process that the contact between the plunger 5 and the wave surface 3 is switched from the wave crest 6 to the wave trough 7, the plunger 5 moves towards the outside of the single-cylinder plunger pump 4, and external hydraulic oil enters the sealed working cavity of the single-cylinder plunger pump 4 from the oil inlet of the single-cylinder plunger pump 4. During the process that the rotating part 2 rotates until the plunger 5 contacts with the wave crest 6 of the wave-shaped surface 3, the wave-shaped surface 3 pushes the plunger 5 to the sealed working cavity of the single-cylinder plunger pump 4, so that the hydraulic oil is pressed out from the oil outlet of the single-cylinder plunger pump 4. The hydraulic oil pressed out from the oil outlet of the single-cylinder plunger pump 4 has a pressure higher than that of the hydraulic oil introduced from the oil inlet of the single-cylinder plunger pump 4, that is, the rotational kinetic energy of the rotating member 2 is converted into hydraulic energy.

According to another aspect of the present disclosure, there is provided a device for converting wind energy into hydraulic energy, referring to fig. 3, the device comprises a device for converting rotational power into hydraulic energy, and a wind catching device 8 for receiving wind to generate a rotational power, wherein the wind catching device 8 is in transmission connection with the power input shaft 1.

In some embodiments, referring to fig. 3, the wind catching device 8 comprises a plurality of blades 9, and the blades 9 are uniformly distributed on the outer circumference of the power input shaft 1. The wind catcher 8 inputs rotational power to the rotor 2 through the power input shaft 1.

The wind energy-to-hydraulic energy device disclosed by the invention takes wind energy as the rotation power of the power input shaft 1, so that the conversion from the wind energy to the hydraulic energy is realized, and the obtained hydraulic energy can be provided for a generator set to generate electricity.

According to another aspect of the present disclosure, a power generation system is provided, referring to fig. 4, the system includes a wind energy to hydraulic energy device 12, a hydraulic motor 10 and a generator set 11. The hydraulic motor 10 is in transmission connection with the generator set 11, so that the hydraulic motor 10 can drive the generator set 11 to work and generate electricity. The wind energy-to-hydraulic energy device 12 is arranged at a high position, the hydraulic motor 10 and the generator set 11 are arranged at a low position, hydraulic oil of the wind energy-to-hydraulic energy device flows back to the hydraulic motor 10 through an oil return pipe 13 to drive the hydraulic motor 10 to rotate, and the hydraulic oil output by the hydraulic motor 10 is conveyed to the wind energy-to-hydraulic energy device through an oil inlet pipe 14. The hydraulic oil output from the hydraulic motor 10 is at a certain pressure and can be delivered to the single-cylinder plunger pump 4 in the wind-to-hydraulic power apparatus located at a high position. The hydraulic oil returned from the single cylinder plunger pump 4 has a greater pressure and can drive the hydraulic motor 10 to rotate.

When the traditional oil pump is applied to a wind power generation system, the flow of hydraulic oil of the traditional oil pump is limited due to low wind speed, and the application of the traditional oil pump in the wind power generation system is limited. In addition, the traditional oil pump body is huge in size and large in installation difficulty. The device for converting wind energy into hydraulic energy overcomes the defect that the traditional oil pump cannot realize high pressure and large flow due to large volume and limited flow. The utility model discloses a plurality of single cylinder plunger pumps of wind energy commentaries on classics hydraulic energy device independently install, and single cylinder plunger pump 4 simple structure is firm, can satisfy the high pressure requirement, can concatenate a plurality of rotation pieces 2 on the power input shaft 1 moreover, can adorn a plurality of single cylinder plunger pumps 4 on every rotation piece 2, also can satisfy large-traffic requirement.

Traditional oil pump breaks down easily, is difficult to the maintenance, and this disclosed wind energy changes hydraulic energy device, single cylinder plunger pump 4 life-span is longer, and simple structure is stable difficult for breaking down, and convenient to detach, goes wrong when certain single cylinder plunger pump 4, does not influence other single cylinder plunger pumps 4, only need tear open out the single cylinder plunger pump 4 that breaks down can, be convenient for maintain.

The wind energy-to-hydraulic energy device is simple in structure, high in stability, strong in bearing capacity and large in power output, and can meet the requirements of high pressure and large flow.

The wind energy-to-hydraulic energy device has strong flexibility, and can select single-cylinder plunger pumps 4 with different inner diameters and strokes to be matched for use according to different flow requirements, and in addition, the number of the serially-connected rotating parts 2 and the number of the single-cylinder plunger pumps 4 on the rotating parts 2 can be changed.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.