An adjustable vertical-axis tidal current energy turbine

Abstract

The present invention discloses an adjustable vertical-axis tidal current turbine, which comprises a mounting cover. A generator is arranged inside the mounting cover. A vertical axis with a hollow structure is vertically fixed at the top of the mounting cover. An installation sleeve is fixedly provided at the top of the vertical axis. A driving bevel gear is vertically arranged inside the installation sleeve. The driving bevel gear is sleeved on the surface of a horizontal shaft. A water wheel blade body is sleeved outside the horizontal shaft. A driven bevel gear which is meshed and matched with the driving bevel gear is horizontally arranged at the bottom of the driving bevel gear. The bottom of the driven bevel gear is fixedly connected with the top of a vertically arranged rotating shaft. The rotating shaft penetrates through the inside of the vertical axis and its bottom end is connected with the input end of the generator. It is characterized in that: a shaft sleeve inside the water wheel blade body is in sliding fit with the outside of the horizontal shaft. A transverse adjusting mechanism for adjusting the position of the water wheel blade body on the horizontal shaft is arranged between the water wheel blade body and the installation sleeve. The present invention can effectively prevent aquatic plants from aggregating and winding on the vertical axis.

Description

Technical Field

[0001] The present invention relates to the technical field of water turbines, and particularly to an adjustable vertical-axis tidal current energy water turbine. Background Technique

[0002] The utilization of tidal energy can be divided into two forms: one is to utilize the kinetic energy of the tide, that is, directly utilize the power of the tidal current to drive a water turbine to generate electricity, which is called tidal current power generation. However, the utilization rate of tidal energy by using the kinetic energy of the tide is very low, and it is currently less applied. The other is to build a dam to utilize the potential energy of the tide to generate electricity, which is the tidal dam power generation technology, also called tidal level power generation, and is the form that is more applied currently. The principle of a tidal potential energy power station is to create a water head by utilizing the potential energy of the tide and generate electricity by using the head difference. Build a dam, gates and a water turbine generator plant in a bay with conditions or an estuary with a large tidal range, separate the bay (or estuary) from the open sea to form a reservoir, and appropriately open and close the water gates to make the water level on the reservoir side form a certain height difference (i.e., the working head) with the tidal level on the sea side, so as to drive the water turbine to rotate and realize power generation.

[0003] When driving a water turbine to work and generate electricity by using the tidal potential energy method, since the distance between the blades of the water turbine and the vertical axis is fixed, the vertical axis will block a part of the strip-shaped aquatic plants. When the aquatic plants fill the distance between the two, when stopping working, due to the blockage of the blades, the rising tide water cannot push the aquatic plants to fall off the vertical axis in the reverse direction, thus affecting the falling off of the aquatic plants from the blades. And a large number of aquatic plants will not only affect the rotation of the blades, but also attract larger shellfish plants to attach to the vertical axis, causing corrosion to the vertical axis and affecting its service life.

[0004] Therefore, it is very necessary to invent an adjustable vertical-axis tidal current energy water turbine to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an adjustable vertical-axis tidal current energy water turbine to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: An adjustable vertical-axis tidal current turbine, comprising a fixedly arranged installation cover, a generator is arranged inside the installation cover, a vertical axis with a hollow structure is vertically fixed at the top of the installation cover, an installation sleeve is fixedly arranged at the top of the vertical axis, a driving bevel gear is vertically arranged inside the installation sleeve, the driving bevel gear is sleeved on the surface of a horizontal shaft, a water wheel blade body is sleeved outside the horizontal shaft, a driven bevel gear meshing with the driving bevel gear is horizontally arranged at the bottom of the driving bevel gear, the bottom of the driven bevel gear is fixedly connected to the top of a vertically arranged rotating shaft, the rotating shaft passes through the inside of the vertical axis and its bottom end is connected to the input end of the generator, and it is characterized in that: the shaft sleeve inside the water wheel blade body is in sliding fit with the outside of the horizontal shaft, and a transverse adjusting mechanism for adjusting the position of the water wheel blade body on the horizontal shaft is arranged between the water wheel blade body and the installation sleeve.

[0007] Preferably, a driving gear is arranged at the bottom end of the rotating shaft, and the driving gear is meshed and matched with a driven gear contained in the generator itself.

[0008] Preferably, the transverse adjusting mechanism comprises a fixed sleeve fixed on the surface of the horizontal shaft, one side of the fixed sleeve close to the water wheel blade body is a conical surface structure, a plurality of guide plates are arranged outside the horizontal shaft, and the guide plates are in axial sliding fit with the strip-shaped grooves opened on the inner side of the shaft sleeve.

[0009] Preferably, the fixed sleeve and the water wheel blade body are connected by a tension spring, one end of the shaft sleeve is hinged to one end of a plurality of pressing plates and a torsion spring is arranged at the hinge, the other end of the pressing plate can contact with the conical surface structure of the fixed sleeve, when the pressing plate is in a horizontal state, the torsion spring is in a restored state and the tension spring is in a stretched state.

[0010] Preferably, an external thread is opened on the outside of the vertical axis, an inverted frustum sleeve in threaded fit with the external thread is sleeved on the outside of the vertical axis, a plurality of ball bearings are arranged at the position where the inner side of the inverted frustum sleeve contacts the external thread, a plurality of lightweight blades are circumferentially and evenly distributed at the circular table surface of the inverted frustum sleeve, and the edge of the lightweight blade is a blade segment.

[0011] Preferably, a plurality of steel wires are arranged at the bottom of the inverted frustum sleeve, and the bottom ends of the steel wires are connected to the top of the installation cover.

[0012] Preferably, a covering cylinder is fixedly sleeved on the upper side of the vertical axis, the covering cylinder is sleeved on the top of the external thread, the inner diameter of the covering cylinder is larger than the outer diameter of the top end of the inverted frustum sleeve, and the top of the covering cylinder bulges upward.

[0013] Preferably, the outside of the horizontal shaft is installed in the installation sleeve through a bearing, and the upper and lower sides of the rotating shaft are limited in the vertical axis through bearings.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The present invention can make the main body of the water wheel blade close to the vertical axis during high tide through the setting of the lateral adjustment mechanism, thereby reducing the distance between the two and facilitating the subsequent movement of aquatic plants, that is, the abutment plate in a vertical state can continuously move the aquatic plants close to the vertical axis when rotating to prevent them from gathering and entangled nearby; when the tide is low, the lateral adjustment mechanism makes the main body of the water wheel blade away from the vertical axis, so that the strip-shaped aquatic plants piled high on the vertical axis can slide downward and become loose, thereby reducing the accumulation height of the aquatic plants. When there is backflow water or high tide again, the obstruction of the main body of the water wheel blade to the aquatic plants is reduced, which can make the aquatic plants fall off the vertical axis more easily; in addition, when the abutment plate on the lower side returns to its original position, the aquatic plants on the vertical axis will be moved up a certain distance to make the aquatic plants looser.

[0016] 2. When the tide is high, the buoyancy of the water will drive the lightweight blades to move upward. When the lightweight blades and the inverted round table sleeve move upward, they can rotate, so that the aquatic plants close to the vertical axis surface can be cut and cleaned; when the tide is low, the lightweight blades and the inverted round table sleeve move downward due to their own gravity, and also rotate, and cut and clean the aquatic plants close to the vertical axis surface again;

[0017] 3. When the inverted truncated table sleeve of the present invention is moved to the upper side of the vertical axis, the steel wire can be tightened. The presence of the steel wire can increase the probability of aquatic plants breaking, thereby reducing the residue of aquatic plants. In addition, the covering of the installation cover by the steel wire can prevent shellfish from nesting on the top of the installation cover, thereby reducing the corrosion of the installation cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the adjustable vertical axis tidal current energy turbine of the present invention;

[0019] Figure 2 The present invention Figure 1 A magnified view of part A;

[0020] Figure 3 It is a main cross-sectional view of the mounting cover, the vertical shaft and the mounting sleeve in the present invention;

[0021] Figure 4 It is a right side view of the water wheel blade body, the horizontal axis and the lateral adjustment mechanism of the present invention after removing the fixing sleeve;

[0022] Figure 5 It is a schematic diagram of the steel wire after the rounded sleeve enters the covering cylinder in the present invention;

[0023] In the figure: mounting cover 1, generator 2, vertical shaft 3, mounting sleeve 4, driving bevel gear 5, horizontal shaft 6, driven bevel gear 7, rotating shaft 8, driving gear 9, main body of water turbine blade 10, shaft sleeve 10.1, strip-shaped groove 11, lateral adjustment mechanism 12, fixed sleeve 121, guide plate 122, tension spring 123, pressing plate 124, external thread 13, inverted frustum sleeve 14, lightweight blade 15, steel wire 16, covering cylinder 17. Detailed implementation manners

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] As Figures 1-5 shown: An adjustable vertical-axis tidal current turbine includes a fixedly arranged mounting cover 1. Inside the mounting cover 1, there is a generator 2. Vertically fixed at the top of the mounting cover 1 is a hollow-structured vertical shaft 3. At the top of the vertical shaft 3, there is a fixedly arranged mounting sleeve 4. Inside the mounting sleeve 4, there is a vertically arranged driving bevel gear 5. The driving bevel gear 5 is sleeved on the surface of a horizontal shaft 6. Outside the horizontal shaft 6, there is a sleeved main body of water turbine blade 10. Horizontally arranged at the bottom of the driving bevel gear 5 is a driven bevel gear 7 that meshes with it. The bottom of the driven bevel gear 7 is fixedly connected to the top of a vertically arranged rotating shaft 8. The rotating shaft 8 passes through the inside of the vertical shaft 3 and its bottom end is connected to the input end of the generator 2. It is characterized in that: the shaft sleeve 10.1 inside the main body of water turbine blade 10 is in sliding fit with the outside of the horizontal shaft 6. Between the main body of water turbine blade 10 and the mounting sleeve 4, there is a lateral adjustment mechanism 12 for adjusting the position of the main body of water turbine blade 10 on the horizontal shaft 6.

[0026] Preferably, at the bottom end of the rotating shaft 8, there is a driving gear 9, and the driving gear 9 meshes with a driven gear contained in the generator 2 itself.

[0027] During flood tide, the water flow will push the main body of water turbine blade 10 to rotate. The main body of water turbine blade 10 drives the horizontal shaft 6 to rotate. The horizontal shaft 6 drives the driving bevel gear 5 and the driven bevel gear 7 to rotate. Finally, the rotating shaft 8 drives the driving gear 9 to rotate, thereby driving the driven gear contained in the generator 2 itself to rotate, realizing the power generation work of the generator 2. The setting of the lateral adjustment mechanism 12 can make the main body of water turbine blade 10 approach the vertical shaft 3, thereby reducing the distance between the two. When ebb tide occurs, the lateral adjustment mechanism 12 makes the main body of water turbine blade 10 move away from the vertical shaft 3, so that the relatively high pile of strip-shaped aquatic plants on the vertical shaft 3 becomes loose downward, reducing the pile height of the aquatic plants. When there is backflow or flood tide again, the blockage of the main body of water turbine blade 10 to the aquatic plants is reduced, and the aquatic plants can fall off from the vertical shaft 3.

[0028] Preferably, the lateral adjustment mechanism 12 includes a fixed sleeve 121 fixed to the surface of the horizontal shaft 6. One side of the fixed sleeve 121 close to the main body 10 of the water turbine blade is a conical structure. A plurality of guide plates 122 are arranged outside the horizontal shaft 6, and the guide plates 122 are axially slidably matched with the strip-shaped grooves 11 opened in the inner side of the shaft sleeve 10.1.

[0029] Preferably, the fixed sleeve 121 is connected to the main body 10 of the water turbine blade by a tension spring 123. One end of the shaft sleeve 10.1 is hinged to one end of a plurality of pressing plates 124, and a torsion spring is arranged at the hinge. The other end of the pressing plate 124 can contact the conical structure of the fixed sleeve 121. When the pressing plate 124 is in a horizontal state, the torsion spring is in a restored state, and the tension spring 123 is in a stretched state.

[0030] The specific working process of the lateral adjustment mechanism 12 for adjusting the position of the main body 10 of the water turbine blade on the horizontal shaft 6 is as follows: During high tide, the water flow will push the main body 10 of the water turbine blade to rotate (the water flow direction corresponds to the Figure 1 direction from left to right in the figure), so that its shaft sleeve 10.1 also drives the pressing plate 124 to rotate. When the rotation speed of the main body 10 of the water turbine blade becomes faster, the pressing plate 124 deflects under the action of centrifugal force, and the pressing plate 124 gradually changes from a horizontal state to a vertical state. While the water pushes the main body 10 of the water turbine blade to move closer to the vertical shaft 3, the pulling force of the tension spring 123 will also drive the main body 10 of the water turbine blade to approach the vertical shaft 3. When the pressing plate 124 in the vertical state rotates, it can continuously push aside the aquatic plants approaching the vertical shaft 3 to prevent them from gathering and winding nearby. When the ebb tide occurs or the water flow speed is small, the restoring elastic force of the torsion spring of the pressing plate 124 will drive the free end of the pressing plate 124 to move back to its original position. During the return process of the lower pressing plate 124, it will push the aquatic plants on the vertical shaft 3 to rise a certain distance, making the aquatic plants looser and facilitating the subsequent pushing of the aquatic plants to fall off the vertical shaft 3 during high tide or ebb tide; in addition, during ebb tide, the water flow will also push the main body 10 of the water turbine blade to rotate in the reverse direction (the water flow direction corresponds to the Figure 1 direction from right to left in the figure). At this time, the water will push the main body 10 of the water turbine blade to move away from the vertical shaft 3. At this time, the relatively high stacked strip-shaped aquatic plants on the vertical shaft 3 can be made to slide down and become loose, reducing the stacking height of the aquatic plants. In addition, since one side of the fixed sleeve 121 close to the main body 10 of the water turbine blade is a conical structure, when the free end of the pressing plate 124 reaches the fixed sleeve 121, it is beneficial for the pressing plate 124 to return to its original horizontal state. In addition, it will also push the main body 10 of the water turbine blade to move, making the tension spring 123 be in a stretched state again, and finally the main body 10 of the water turbine blade is at the farthest distance from the vertical shaft 3.

[0031] Preferably, an external thread 13 is provided on the outer side of the vertical shaft 3, and an inverted frustum sleeve 14 that is in threaded engagement with the external thread 13 is sleeved on the outer side of the vertical shaft 3. A plurality of balls are arranged at the position where the inner side of the inverted frustum sleeve 14 contacts the external thread 13. A plurality of lightweight blades 15 are circumferentially distributed on the circular table surface of the inverted frustum sleeve 14, and the edge of the lightweight blade 15 is a blade segment. In this embodiment, an inverted frustum sleeve 14 that is in threaded engagement with the external thread 13 is sleeved on the outer side of the vertical shaft 3, and a plurality of balls are arranged at the position where the inner side of the inverted frustum sleeve 14 contacts the external thread 13. In this way, the vertical shaft 3, the inverted frustum sleeve 14, and the balls can form a structure similar to a "ball screw". When the tide rises, the buoyancy of the water will drive the lightweight blade 15 to move upward. Due to this "ball screw" structure, when the lightweight blade 15 and the inverted frustum sleeve 14 move upward, a rotational movement can occur, so that the aquatic plants adhering to the surface of the vertical shaft 3 can be cut and cleaned. When the tide ebbs, the lightweight blade 15 and the inverted frustum sleeve 14 move downward due to their own gravity and also undergo a rotational movement, and the aquatic plants adhering to the surface of the vertical shaft 3 are cut and cleaned again. In this embodiment, the lightweight blade 15 can be made into a metal cutting blade structure with a hollow interior, which can reduce its mass and enhance its buoyancy without affecting its cutting performance.

[0032] Preferably, a plurality of steel wires 16 are arranged at the bottom of the inverted frustum sleeve 14, and the bottom ends of the steel wires 16 are connected to the top of the mounting cover 1. After such a design, when the inverted frustum sleeve 14 moves upward to the upper side of the vertical shaft 3, the steel wires 16 can be tightened. The presence of the steel wires 16 can increase the probability of the aquatic plants breaking, thereby reducing the residue of the aquatic plants. In addition, by covering the mounting cover 1 with the steel wires 16, it can prevent shellfish from building nests on the top of the mounting cover 1 and reduce the corrosion of the mounting cover 1.

[0033] Preferably, a covering cylinder 17 is sleeved and fixed on the upper side of the vertical shaft 3. The covering cylinder 17 is sleeved on the top end of the external thread 13. The inner diameter of the covering cylinder 17 is larger than the outer diameter of the top end of the inverted frustum sleeve 14, and the top of the covering cylinder 17 protrudes upward. The upward protrusion of the top of the covering cylinder 17 can prevent debris from remaining on the top. The inner diameter of the covering cylinder 17 being larger than the diameter of the top end of the inverted frustum sleeve 14 allows the inverted frustum sleeve 14 to enter the interior of the covering cylinder 17.

[0034] Preferably, the outer side of the horizontal shaft 6 is installed in the mounting sleeve 4 through a bearing, and the upper and lower sides of the rotating shaft 8 are limited in the vertical shaft 3 through bearings.

[0035] The working principle of this embodiment is specifically as follows:

[0036] During high tide, the water flow will push the main body 10 of the water wheel blade to rotate (the water flow direction corresponds to Figure 1In the direction from left to right in [description], the bushing 10.1 thereof also drives the abutting plate 124 to rotate. When the rotation speed of the water wheel blade main body 10 becomes faster, the abutting plate 124 deflects under the action of centrifugal force. The abutting plate 124 gradually changes from a horizontal state to a vertical state. While the water pushes the water wheel blade main body 10 to move closer to the vertical shaft 3, the pulling force of the tension spring 123 will also drive the water wheel blade main body 10 to approach the vertical shaft 3. When the abutting plate 124 in the vertical state rotates, it can continuously push the aquatic plants approaching the vertical shaft 3 to prevent them from gathering and winding nearby. When the ebb tide occurs or the water flow speed is small, the restoring elastic force of the torsion spring of the abutting plate 124 will drive the free end of the abutting plate 124 to move back to its original position. During the return process of the lower abutting plate 124, it will push the aquatic plants on the vertical shaft 3 to rise a certain distance, making the aquatic plants looser, which is convenient for the subsequent flood tide or ebb tide to push the aquatic plants to fall off from the vertical shaft 3; in addition, during the ebb tide, the water flow will also push the water wheel blade main body 10 to rotate in the reverse direction (the water flow direction corresponds to Figure 1 the direction from right to left in [description]). At this time, the water will push the water wheel blade main body 10 to move away from the vertical shaft 3. At this time, the relatively high stacked strip-shaped aquatic plants on the vertical shaft 3 can be made to slide down and become loose, reducing the stacking height of the aquatic plants. Since the surface of the fixing sleeve 121 close to the water wheel blade main body 10 is a conical structure, when the free end of the abutting plate 124 reaches the fixing sleeve 121, it is beneficial for the abutting plate 124 to return to its original horizontal state. In addition, it will also push the water wheel blade main body 10 to move, making the tension spring 123 in a stretched state again, and the water wheel blade main body 10 is finally at the farthest distance from the vertical shaft 3; in addition, when the flood tide occurs, the buoyancy of the water will drive the lightweight blade 15 to move upward. While the lightweight blade 15 and the inverted frustum sleeve 14 move upward, they can rotate, so as to cut and clean the aquatic plants adhering to the surface of the vertical shaft 3; when the ebb tide occurs, the lightweight blade 15 and the inverted frustum sleeve 14 move downward due to their own gravity and also rotate, and cut and clean the aquatic plants adhering to the surface of the vertical shaft 3 again.

[0037] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The embodiments in this application and the features in the embodiments can be arbitrarily combined with each other without conflict. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An adjustable vertical-axis tidal current energy turbine, comprising a fixedly arranged installation cover (1), a generator (2) is arranged inside the installation cover (1), a vertical axis (3) with a hollow structure is vertically fixed at the top of the installation cover (1), an installation sleeve (4) is fixedly arranged at the top of the vertical axis (3), a driving bevel gear (5) is vertically arranged inside the installation sleeve (4), the driving bevel gear (5) is sleeved on the surface of a horizontal shaft (6), a water wheel blade body (10) is sleeved outside the horizontal shaft (6), a driven bevel gear (7) meshing with the driving bevel gear (5) is horizontally arranged at the bottom of the driving bevel gear (5), the bottom of the driven bevel gear (7) is fixedly connected to the top of a vertically arranged rotating shaft (8), the rotating shaft (8) passes through the inside of the vertical axis (3) and its bottom end is connected to the input end of the generator (2), and is characterized in that: The bushing (10.1) inside the water wheel blade body (10) is in sliding fit with the outer side of the horizontal shaft (6), and a lateral adjustment mechanism (12) for adjusting the position of the water wheel blade body (10) on the horizontal shaft (6) is provided between the water wheel blade body (10) and the mounting sleeve (4); A driving gear (9) is provided at the bottom end of the rotating shaft (8), and the driving gear (9) is meshed and matched with the driven gear contained in the generator (2) itself; The lateral adjustment mechanism (12) includes a fixed sleeve (121) fixed on the surface of the horizontal shaft (6). One side of the fixed sleeve (121) close to the water wheel blade body (10) is a conical surface structure. A plurality of guide plates (122) are arranged on the outer side of the horizontal shaft (6), and the guide plates (122) are in axial sliding fit with the strip-shaped grooves (11) opened on the inner side of the bushing (10.1); The fixed sleeve (121) is connected to the water wheel blade body (10) through a tension spring (123). One end of the bushing (10.1) is hinged to one end of a plurality of abutting plates (124), and a torsion spring is provided at the hinge. The other end of the abutting plate (124) can contact the conical surface structure of the fixed sleeve (121). When the abutting plate (124) is in a horizontal state, the torsion spring is in a restored state, and the tension spring (123) is in a stretched state; External threads (13) are provided on the outer side of the vertical shaft (3). A truncated cone sleeve (14) that is in threaded fit with the external threads (13) is sleeved on the outer side of the vertical shaft (3). A plurality of balls are arranged at the position where the inner side of the truncated cone sleeve (14) contacts the external threads (13). A plurality of lightweight blades (15) are circumferentially distributed on the circular table surface of the truncated cone sleeve (14), and the edge of the lightweight blade (15) is a blade section.

2. The adjustable vertical-axis tidal current energy turbine according to claim 1, wherein: A plurality of steel wires (16) are provided at the bottom of the truncated cone sleeve (14), and the bottom ends of the steel wires (16) are connected to the top of the mounting cover (1).

3. The adjustable vertical-axis tidal current energy turbine according to claim 1, characterized in that: A covering cylinder (17) is sleeved and fixed on the upper side of the vertical shaft (3). The covering cylinder (17) is sleeved on the top end of the external threads (13). The inner diameter of the covering cylinder (17) is larger than the outer diameter of the top end of the truncated cone sleeve (14), and the top of the covering cylinder (17) bulges upward.

4. The adjustable vertical-axis tidal current energy turbine according to claim 1, characterized in that: The outer side of the horizontal shaft (6) is installed in the mounting sleeve (4) through a bearing, and the upper and lower sides of the rotating shaft (8) are limited in the vertical shaft (3) through bearings.

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