CN106005332A - Oscillatory type web-shaped propelling device - Google Patents

Abstract

The invention discloses an oscillating paddle-shaped propulsion device, which includes an oscillating source floating on the water surface or submerged in the water body, and further includes: a connecting rod fixedly connected with the oscillating source and whose lower end extends into the water body; The web propeller is connected to the lower end of the connecting rod through an elastic member with an elastic reset function. The propulsion device is environmentally friendly, efficient, and energy-saving, and can convert wave energy into mechanical energy, thereby generating a driving force to propel underwater equipment.

Description

Oscillating webbed propulsion

technical field

The invention relates to the field of marine engineering, in particular to an energy conversion and motion propulsion device that imitates flippers and converts wave energy into mechanical energy—an oscillating webbed propulsion device.

Background technique

The ocean is the cradle of human life, a huge treasure house of resources, containing rich resources: a wide variety of biological resources (including fisheries, marine organisms, etc.), rich mineral resources (such as oil and gas, combustible ice, etc.), chemical resources (various Metals and salts), but also inexhaustible power resources (such as wave energy, tidal energy, temperature difference energy, salt difference energy, ocean current energy, etc.). The fourth assessment report of the IPCC (Intergovernmental Panel on Climate Change) pointed out that in the past 100 years (1906-2005), the global warming trend was 0.074℃/10a, and the environmental crisis and resource crisis caused by global warming Phenomena such as these pose a serious threat to human survival and sustainable development. In today's world where conventional energy sources (such as coal, oil, etc.) are in short supply, human beings focus on new energy sources, especially the abundant ocean energy. The best choice for changing and conventional energy shortage is also one of the common strategies adopted by various countries. Ocean energy includes wave energy, tidal energy, temperature difference energy, ocean current energy, salt difference energy, etc. According to "Ocean Energy Development" published by UNESCO, the theoretical renewable power of various ocean energy in the world is about 76.6 billion kW, Among them, the order of magnitude of various types of ocean energy is that of salt difference energy and temperature difference energy, each of which is 10 billion kW; wave energy and tidal energy are next, each of which is 1 billion kW; ocean current energy is 100 million kW. The current wave power generation device can provide energy for marine farms, offshore weather buoys, oil platforms, offshore lighthouses, offshore islands, etc., and can also be integrated into urban power grids. Wave power generation is currently one of the focuses of developed countries. When then Vice Premier Li Keqiang visited the UK in January 2011, the only high-tech achievement that the British showed to the Prime Minister was wave power generation.

Renewable energy has become an important alternative energy as traditional energy is facing problems such as depletion, environmental protection, and security of supply. As a clean and pollution-free renewable energy, wave energy has a wide distribution and huge energy. The British Carbon Trust estimates that the practical offshore wave energy in the UK is 55TWh per year, accounting for 14% of the current energy demand, and the potential wave energy in Europe is at least 280TWh per year. The Electric Energy Research Institute of the United States estimates that the feasible wave energy in the United States is 255TWh per year, accounting for 6% of the current energy demand.

The major oceanic countries in the world attach great importance to the research on wave energy, and countries such as the United Kingdom, Sweden, Portugal, the United States, and Japan are in a leading position. The wave energy research departments in the UK include the University of Edinburgh and the University of Southampton, etc. The European Marine Center is located in the Orkney Islands of Scotland. Uppsar University in Sweden is well-known in the field of wave energy research. Portugal's main research institutions include the Institute of Advanced Technology and the National Institute of Energy Technology. The University of Oregon and OPT are well-known in the field of wave energy research, and the National Oceanic Center of the United States was established at the University of Oregon. Japan's wave energy is famous for its oscillating water column technology and backbend pipe technology, and its main research institutions include Saga University and Tsukuba University. China's wave energy research institutions mainly include the Guangzhou Institute of Energy Research, Chinese Academy of Sciences.

Contents of the invention

The object of the present invention is to propose an environmentally friendly, efficient, and energy-saving oscillating web-shaped propulsion device, which can convert wave energy into mechanical energy, and then generate a driving force to propel underwater equipment.

The technical solution of the present invention is: an oscillating webbed propulsion device, including an oscillation source floating on the water surface or submerged in the water body, and also includes:

A connecting rod that is fixedly connected with the oscillation source and whose lower end extends into the water body;

The paddle propeller is connected to the lower end of the connecting rod through an elastic member with an elastic reset function.

On the basis of the above-mentioned technical solutions, the present invention also includes the following preferred solutions:

The elastic member is a spring.

The web propeller is composed of a bracket and a web connected to the bracket, the bracket is fixedly connected with the elastic reset member, and the web is made of flexible material.

The bracket is composed of three support rods fixedly connected together at one end.

The oscillation source is a ship, a submarine or a deep submersible.

The water surface is sea water surface, and the water body is sea water.

The advantages of the present invention are:

1. Save energy. The propulsion device can convert the wave energy into the mechanical energy required by the movement of the object without additional energy supply. It can greatly reduce the consumption of fossil energy or other energy, and meet the current demand for sustainable development. As an important renewable energy source, wave energy will directly reduce the demand pressure on fossil energy. It even has a huge impact on international diplomacy, economy, politics, and military affairs.

2. Protect the environment. The direct use of fossil energy for energy supply at sea must go through the combustion process of fossil fuels, and this process will inevitably produce a large amount of toxic and harmful gases or other exhaust. Some of these wastes directly enter the ocean and cause huge damage to the environment, while others indirectly affect the marine environment. At the same time, ships using fossil energy will definitely carry a large amount of fossil energy to be transported together with the ship. Once marine production and transportation accidents occur, a large amount of fossil energy will directly enter the ocean, which will cause huge damage to the ocean, and sometimes this damage is even irreversible.

However, by using the propulsion device of the present invention, the wave energy is directly used to generate thrust, without carrying a large amount of fossil energy, and at the same time avoiding the burning link, which significantly reduces the impact on the marine environment.

The substitution of fossil fuels can not only greatly promote the development of the new energy industry, greatly protect the marine environment, reduce the huge damage to the marine environment caused by marine accidents, but also provide the most powerful support for the national strategy. Energy is related to the lifeline of a country and is an important factor in determining the relationship between countries. Therefore, this invention not only has far-reaching significance in the field of energy and environment, but also plays a decisive role in the long-term development of the country.

3. Simple structure. The structure of the propulsion device is relatively simple, easy to install and use, and the principle is simple and easy to understand and can be popularized quickly, which will have a profound impact on the energy industry, marine transportation and other industries.

4. High reliability. According to the principle of mechanical design, the failure rate of the device with simple structure is relatively low. Our device has few relative motion links, and the motion is controllable, which greatly increases the reliability of the device and can effectively reduce the maintenance cost in the later stage. economy.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is the front view of propulsion device of the present invention;

Fig. 2 is a schematic structural diagram of the propulsion device of the present invention;

The schematic diagram of the structure of the fin propeller position in Fig. 3 of the present invention;

Fig. 4 is the schematic diagram of the installation of multiple groups of fin propellers;

Fig. 5 is a schematic diagram of the downward movement and rotation of the oscillation source, and the arrow in the figure indicates the direction of movement;

Fig. 6 is a schematic diagram of upward movement and rotation of the oscillation source, and the arrow in the figure indicates the direction of movement;

Figure 7 is a schematic diagram of the relative movement of multiple groups of webbed propellers, and the arrows in the figure indicate the direction of movement;

Among them: 1-oscillation source, 2-connecting rod, 3-elastic member, 4-fin propeller.

detailed description

Figures 1 to 7 show a specific embodiment of the oscillating paddle propulsion device of the present invention, the device mainly includes an oscillation source 1 , a connecting rod 2 , an elastic member 3 and a paddle propeller 4 . in:

The oscillation source 1 is floating on the water surface or submerged in the water body, such as ships, buoys, ocean platforms, submarines, deep submersibles or other ocean engineering structures. In this example, the oscillation source 1 is a ship floating on the sea.

The connecting rod 2 is fixedly connected (rigidly connected) to the oscillation source 1, and the lower end of the connecting rod 2 extends into the water body.

The elastic member 3 has an elastic reset function, that is, when the elastic member 2 is elastically deformed by an external force, if the external force disappears, the elastic member 2 returns to its original state.

In this example, the elastic member 3 is a spring. The web propeller 4 is connected to the lower end of the connecting rod 2 and is submerged in water.

The structure of the webbed propeller 4 is similar to the flippers of duck webs and diving suits. In this example, the web propeller 4 is composed of a bracket 401 and a web 402 connected to the bracket, wherein the bracket 401 is fixedly connected with the elastic reset member 3 , and the web 402 is made of flexible material.

The bracket 401 is specifically composed of three support rods, one ends of the three support rods are fixedly connected together and fixedly connected with the elastic reset member 3 . The support rod is made of rigid material, while the web 402 is made of flexible material. This design can increase the thrust and improve the propulsion efficiency

Under the action of ocean waves, the oscillation source 1 will produce a heave motion similar to the cycle of ocean waves, which is mainly caused by the change of buoyancy with space and time. This movement drives the elastic member 3 and the paddle propeller 4 through the rigidly fixed connecting rod 2 to perform the heave movement together. In the process of moving up and down, the paddle propeller 4 must be subjected to the resistance of water to it, and at the same time, it is expressed as a moment against the elastic member 3 . The torque fin propeller 4 is accompanied by a very considerable swing motion during the up and down motion. When the device moves up as a whole, the web propeller 4 is subjected to downward resistance, thereby swinging downward; when the device moves downward as a whole, the web propeller 4 is subject to upward resistance, thereby swinging upward. The swing period of the fin propeller 4 is approximately equal to the wave period and the up and down movement period of the oscillation source. According to the relevant knowledge of bionics, when the web propeller 4 swings up and down, the special shape will push the water to move backward. At this time, according to Newton's third law, the backward moving water flow will generate a forward thrust to the whole device, and this thrust pushes the whole device (including the oscillation source 1) to move forward to complete the conversion of wave energy into mechanical energy.

For equipment moving inside the ocean, such as submarines and deep submersibles, the propulsion principle is similar, but it mainly relies on the vibration and energy of internal waves instead of using the vibration and energy of surface waves like sea ships. An internal wave is a type of underwater wave that usually occurs in stratified media and is a type of fluctuation that occurs between layers of water with inhomogeneous densities in the interior of the ocean. As long as the density of seawater is stable and stratified, and there is a source of disturbance, internal waves will be generated. Although the energy of the internal wave is slightly smaller than that of the surface wave, it is still very considerable.

Referring to Fig. 4 and Fig. 6, multiple sets of propulsion devices can be installed on one oscillating source 1 to improve the propulsion effect on the oscillating source 1.

During the use of this propulsion device, in order to ensure the maximum propulsion effect, there are some environments and details that require special attention:

1. The parts of the spring need to be lubricated frequently to prevent a large amount of wear caused by rapid friction, hinder the subsequent use of the propulsion device, and improve the service life and reliability of the device.

2. The webbed propeller 4 will move along with the wave cycle during the working process. During this process, it is strictly forbidden to touch the webbed propeller 4 with other objects, such as reefs, to prevent the webbed propulsion device from being damaged , and eventually cause huge economic and human losses.

3. During use, the propulsion device may perform periodic motion along with the waves. If some components in the vibration source have special requirements for vibration, or have special requirements for human comfort, relevant vibration checks should be carried out.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention, the purpose of which is to enable people to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the main technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. an oscillatory type web shape propulsion plant, including the vibration swimming on the water surface or be immersed in water body Source (1), it is characterised in that also include:

Fixing with described oscillation source (1) it is connected and connecting rod (2) that its lower end is stretched in water body；

The web of described connecting rod (2) lower end it is connected to by having the elastic component (3) of elastic reset function Formula propeller (4).

Oscillatory type web shape propulsion plant the most according to claim 1, it is characterised in that: described elastic structure Part (3) is spring.

Oscillatory type web shape propulsion plant the most according to claim 1, it is characterised in that: described web formula pushes away Enter device (4) to be made up of support (401) and the web face (402) being connected on this support, described support (401) Fixing with described resilient return member (3) and be connected, described web face (402) uses flexible material to make.

Oscillatory type web shape propulsion plant the most according to claim 3, it is characterised in that: described support (401) Three support bars being fixed together by one end are constituted.

5. according to the oscillatory type web shape propulsion plant described in any claim in Claims 1 to 4, its feature It is: described oscillation source (1) is boats and ships, buoy, submarine or bathyscaph.

6. according to the oscillatory type web shape propulsion plant described in any claim in Claims 1 to 4, its feature Being: the described water surface is sea water face, described water body is sea water.