CN115111109A - A down-mounted hydraulic wave energy power generation floating body - Google Patents

Abstract

The application discloses a lower hanging type hydraulic wave energy power generation floating body which comprises a floating body, a spring return hydraulic cylinder, an anchor chain and an energy conversion device, wherein the bottom of the floating body is connected with the top of a cylinder body in the spring return hydraulic cylinder through a steel cable, and a piston rod of the spring return hydraulic cylinder extends downwards and is fixed with the seabed through the anchor chain; a hydraulic oil circuit in the spring return hydraulic cylinder is connected with a hydraulic pipeline in the energy conversion device, and the output end of the hydraulic pipeline is connected with a hydraulic motor generator in the energy conversion device; and a hydraulic oil circuit in the spring return hydraulic cylinder is connected with an oil tank. The energy conversion device is used for gradually converting ocean wave energy into floating body mechanical energy in the movement process of the whole system by utilizing the floating body, the spring return hydraulic cylinder and the energy conversion device; from the mechanical energy of the floating body to the hydraulic energy; conversion from hydraulic energy to electrical energy.

Description

A down-mounted hydraulic wave energy power generation floating body

technical field

The present application relates to the technical field of wave power generation, in particular to a down-mounted hydraulic wave power generation floating body.

Background technique

Ocean wave energy is a clean and non-polluting renewable energy. The successful and efficient use of wave energy for ship navigation, marking of fixed points for maritime scientific research and providing electricity for maritime military installations is the main purpose of developing small wave energy devices in various countries. . The wave power generation system moored to the seabed is one of many forms of offshore development of ocean wave energy. The power structure of the power generation part in the traditional wave energy power generation device has a large structure and a large weight, and the arrangement position of each component is relatively fixed. Therefore, installation and transportation are relatively inconvenient. It can only be completed by adding a larger volume of power structure, which is less practical. To this end, the present application provides an under-mounted hydraulic wave power generation floating body.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a bottom-mounted hydraulic wave energy power generation floating body, so as to solve the problems of complex power structure and poor practicability of the power generation part in the prior art proposed in the above background art.

In order to achieve the above purpose, the present application discloses the following technical solutions: a bottom-mounted hydraulic wave energy power generation floating body, comprising a floating body body, a spring return hydraulic cylinder, an anchor chain, and an energy conversion device, and the bottom of the floating body body is connected to the bottom of the floating body through steel cables. The top of the cylinder body in the spring-return hydraulic cylinder is connected, the piston rod of the spring-return hydraulic cylinder extends downward and is fixed to the seabed through the anchor chain; the hydraulic oil circuit in the spring-return hydraulic cylinder is connected to the energy The hydraulic pipeline in the conversion device is connected, and the output end of the hydraulic pipeline is connected with the hydraulic motor generator in the energy conversion device; the hydraulic oil circuit in the spring return hydraulic cylinder is connected with the oil tank.

Preferably, an accumulator is installed between the hydraulic oil circuit in the spring return hydraulic cylinder and the hydraulic circuit in the energy conversion device.

Preferably, the working method of the under-mounted hydraulic wave energy power generation floating body comprises the following steps:

S1. When the waves come, the movement of the waves drives the movement of the floating body;

S2. The movement of the floating body drives the cylinder of the spring return hydraulic cylinder and the piston in the spring return hydraulic cylinder to move relative to each other;

S3. The relative movement between the cylinder body of the spring return hydraulic cylinder and the piston in the spring return hydraulic cylinder causes the high pressure hydraulic oil in the spring return hydraulic cylinder to flow rapidly;

S4. The high-pressure hydraulic oil in the spring-returning hydraulic cylinder and the hydraulic pipeline in the energy conversion device perform hydraulic energy transmission;

S5. The hydraulic pipeline in the energy conversion device drives the hydraulic motor generator to generate electricity to generate electricity. Preferably, the working method of the under-mounted hydraulic wave energy power generation floating body should include the following steps:

S6. When the waves fall, the body of the floating body moves downward, the steel cable is loosened, the spring arranged in the spring-returning hydraulic cylinder resets the piston of the spring-returning hydraulic cylinder, and the spring-returning hydraulic cylinder is removed from the oil tank. Absorb oil internally to prepare for work when waves come in the next cycle;

S7. Repeat steps S1-S6.

Preferably, in the step S6, when the floating body body moves downward, the accumulator between the hydraulic oil circuit in the spring-return hydraulic cylinder and the hydraulic circuit in the energy conversion device is stored Energy and relieve stress mutation.

Beneficial effect: The under-mounted hydraulic wave energy power generation floating body of the present application is applied in unmaintained sea areas far from the coast, and uses the inexhaustible ocean wave energy to provide the motive power for the wave energy hydraulic power generation device moored on the seabed, and then converts it into For the required power output, it can provide power for ocean channels, marine test marking points and other equipment that is far away from shore and needs to provide power. This application adopts a spring-return hydraulic cylinder as the motive power structure for generating electricity by using wave energy. Since the hydraulic system has the same power, the spring-return hydraulic cylinder is small in size, light in weight and compact in structure, and various components of the hydraulic transmission can be conveniently and It can be arranged flexibly, and the power generation of the device is related to the size of the floating body and the energy of incoming waves. Different combinations of accessories can be selected to achieve energy output of different sizes. After the spring return hydraulic cylinder is assembled with the floating body, the overall structure is simple, the wearing parts are small, the volume is small, and there is no need to build a large fixed platform. The hydraulic system is easy to arrange and install. The hydraulic wave power generation floating body will not affect the operation of marine vessels, so it can be widely used in various sea areas.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the structural schematic diagram of the under-mounted hydraulic wave power generation floating body in the embodiment of the application;

FIG. 2 is a flow chart of the working method of the under-mounted hydraulic wave power generation floating body in the embodiment of the application.

Reference signs: 1. Floating body; 2. Spring return hydraulic cylinder; 3. Anchor chain; 4. Energy conversion device.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", The orientation or positional relationship indicated by "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the indicated device or element must have The particular orientation, construction and operation in the particular orientation are therefore not to be construed as limitations of the present disclosure. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

It should also be noted that the standard parts used in this application document can be purchased from the market, and can be customized according to the descriptions in the description and drawings. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations, and, if not explicitly defined, the machinery, parts and equipment can all use conventional models in the prior art .

As used herein, the term "comprising" is intended to encompass a non-exclusive inclusion such that a process, method, article or apparatus comprising a list of elements includes not only those elements, but also other elements not expressly listed, or also includes Elements inherent to such a process, method, article or device. Without further limitation, an element defined by the phrase "comprises" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element.

Example

Referring to an under-mounted hydraulic wave energy power generation floating body shown in FIG. 1, it includes a floating body body 1, a spring return hydraulic cylinder 2, an anchor chain 3, and an energy conversion device 4. The floating body body 1 can be any one in the prior art. The floating body structure, which floats on the ocean surface, the size of the power generation of the device is related to the size of the floating body body 1 and the energy of incoming waves, and different sizes of the floating body body 1 can be selected to achieve energy output of different sizes. The bottom of the floating body 1 is connected to the top of the cylinder in the spring-returning hydraulic cylinder 2 through a steel cable. The spring-returning hydraulic cylinder 2 can be any hydraulic cylinder structure in the prior art that utilizes a spring to reset the internal piston of the hydraulic cylinder. The piston rod of the return hydraulic cylinder 2 extends downward and is fixed to the seabed through the anchor chain 3 . The hydraulic oil circuit in the spring return hydraulic cylinder 2 is connected with the hydraulic pipeline in the energy conversion device 4, and the output end of the hydraulic pipeline is connected with the hydraulic motor generator in the energy conversion device 4; the hydraulic oil in the spring return hydraulic cylinder 2 is connected The road is connected to the fuel tank. An accumulator is installed between the hydraulic oil circuit in the spring return hydraulic cylinder 2 and the hydraulic circuit in the energy conversion device 4 .

Based on the above structure, the vertical upward movement of the floating body 1 under the action of the wave force will lift the traction spring return hydraulic cylinder 2 when the waves come, because the piston in the spring return hydraulic cylinder 2 is moored to the seabed through the anchor chain 3, and the anchor chain 3. Its own weight is large, and the piston cannot completely move upward with the cylinder body of the spring return hydraulic cylinder 2, so that a relative movement is formed between the cylinder body of the spring return hydraulic cylinder 2 and the piston, and the resulting relative movement will displace the spring return hydraulic cylinder 2 The hydraulic oil in the cavity transmits energy through the hydraulic oil circuit and the hydraulic pipeline in the energy conversion system, thereby driving the hydraulic motor generator in the energy conversion system to rotate to generate electric energy. At the same time, it is feasible that the work form of the hydraulic system on the spring-returning hydraulic cylinder 2 can be directly used to drive the force actuator for ship operation, etc. in addition to generating electricity.

In some feasible implementations, the required three-way valve, one-way valve, oil circuit switch, speed control valve, etc. are also installed on the hydraulic oil circuit and hydraulic pipeline. The use of these components is to improve the hydraulic oil circuit and The reliability and feasibility of energy transfer between hydraulic pipelines are well known to those of ordinary skill in the art, and are not the focus of the technical improvement of the present application. Therefore, the applicant will not repeat the content here.

With the hardware structure of the above-mentioned under-mounted hydraulic wave energy power generation floating body, as shown in Figure 2, its working method includes the following steps:

S1. When the waves come, the movement of the waves drives the movement of the floating body 1;

S2. The movement of the floating body 1 drives the cylinder body of the spring return hydraulic cylinder 2 and the piston in the spring return hydraulic cylinder 2 to move relative to each other;

S3, the relative movement between the cylinder body of the spring return hydraulic cylinder 2 and the piston in the spring return hydraulic cylinder 2 makes the high pressure hydraulic oil in the spring return hydraulic cylinder 2 flow rapidly;

S4. The high-pressure hydraulic oil in the spring return hydraulic cylinder 2 and the hydraulic pipeline in the energy conversion device 4 perform hydraulic energy transmission;

S5. The hydraulic pipeline in the energy conversion device 4 drives the hydraulic motor generator to generate electricity;

S6. When the waves fall, the body 1 of the floating body moves downward, and the steel cables are loosened. The spring set in the spring-returning hydraulic cylinder 2 resets the piston of the spring-returning hydraulic cylinder 2, and the spring-returning hydraulic cylinder 2 sucks oil from the oil tank, so that the next Prepare for the work when the waves come in cycles, and at the same time, the spring returns the accumulator between the hydraulic oil circuit in the hydraulic cylinder 2 and the hydraulic circuit in the energy conversion device 4 to store energy and relieve the sudden change of pressure;

S7. Repeat steps S1-S6.

In short, the under-mounted hydraulic wave energy power generation floating body of this embodiment mainly uses the hydraulic system to transmit energy, mainly using the floating body body 1, the spring return hydraulic cylinder 2, and the energy conversion device 4. During the movement of the entire system, Gradually realize the conversion from ocean wave energy to floating body mechanical energy; from floating body mechanical energy to hydraulic energy; from hydraulic energy to electrical energy.

Finally, it should be noted that the above are only the preferred embodiments of the present application, and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments can be modified, or some technical features thereof can be equivalently replaced, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included. within the scope of protection of this application.

Claims (5)

1. The lower-hanging type hydraulic wave power generation floating body is characterized by comprising a floating body (1), a spring return hydraulic cylinder (2), an anchor chain (3) and an energy conversion device (4), wherein the bottom of the floating body (1) is connected with the top of a cylinder body in the spring return hydraulic cylinder (2) through a steel cable, and a piston rod of the spring return hydraulic cylinder (2) extends downwards and is fixed with the seabed through the anchor chain (3); a hydraulic oil circuit in the spring return hydraulic cylinder (2) is connected with a hydraulic pipeline in the energy conversion device (4), and the output end of the hydraulic pipeline is connected with a hydraulic motor generator in the energy conversion device (4); and a hydraulic oil circuit in the spring return hydraulic cylinder (2) is connected with an oil tank.

2. An underslung hydraulic wave energy generating float according to claim 1, characterized in that an accumulator is installed between the hydraulic oil circuit in the spring return hydraulic cylinder (2) and the hydraulic line in the energy conversion device (4).

3. The downward hanging type hydraulic wave energy power generation floating body according to any one of claims 1-2, characterized in that the working method of the downward hanging type hydraulic wave energy power generation floating body comprises the following steps:

s1, when sea waves swell, the motion of the waves drives the floating body (1) to move;

s2, the movement of the floating body (1) drives the cylinder body of the spring return hydraulic cylinder (2) and the piston in the spring return hydraulic cylinder (2) to move relatively;

s3, the relative motion between the cylinder body of the spring return hydraulic cylinder (2) and the piston in the spring return hydraulic cylinder (2) enables the high-pressure hydraulic oil in the spring return hydraulic cylinder (2) to rapidly flow;

s4, performing hydraulic energy transfer on high-pressure hydraulic oil in the spring return hydraulic cylinder (2) and a hydraulic pipeline in the energy conversion device (4);

s5, a hydraulic pipeline in the energy conversion device (4) drives the hydraulic motor generator to generate electricity to generate electric energy.

4. The underslung hydraulic wave energy power generation floating body according to claim 3, wherein the working method of the underslung hydraulic wave energy power generation floating body comprises the following steps:

s6, when sea waves fall, the floating body (1) moves downwards, the steel cable is loosened, the spring arranged in the spring return hydraulic cylinder (2) resets the piston of the spring return hydraulic cylinder (2), and the spring return hydraulic cylinder (2) absorbs oil from the oil tank to prepare for doing work during the next wave cycle;

s7, repeating the steps S1-S6.

5. The underslung hydraulic wave energy generating float of claim 4, characterized in that in step S6, an accumulator between a hydraulic oil circuit in the spring return hydraulic cylinder (2) and a hydraulic line in the energy conversion device (4) accumulates and relieves sudden changes in force as the float body (1) moves downward.

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