CN214998002U - Tidal current energy water turbine experimental device with reversing mechanism - Google Patents
Tidal current energy water turbine experimental device with reversing mechanism Download PDFInfo
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- CN214998002U CN214998002U CN202120822047.1U CN202120822047U CN214998002U CN 214998002 U CN214998002 U CN 214998002U CN 202120822047 U CN202120822047 U CN 202120822047U CN 214998002 U CN214998002 U CN 214998002U
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Abstract
The utility model discloses a tidal current energy water turbine experimental device with a reversing mechanism, which comprises a strut and a main structure which are arranged in an experimental water tank, wherein the main structure is rotatably arranged at the top of the strut, one side of a cabin shell is provided with a main wing, the other side of the cabin shell is provided with an auxiliary wing, and the tail part of the cabin shell is provided with a tail vane, wherein the main wing is hinged with the cabin shell; the auxiliary wing and the tail vane are fixedly connected with the cabin shell. In this application, through setting up major-minor wing and tailvane, rotate the major structure and set up at the pillar top, change the direction of incoming flow, the relative cabin casing rotates certain angle and opens after the main wing receives the incoming flow and assaults, and the major structure left and right sides atress is uneven, leads to whole major structure to take place to rotate around the pillar, and the incoming flow assaults main wing and tailvane then, realizes the hydraulic turbine switching-over. The model experiment is carried out on the tidal current energy water turbine through the device, help is provided for the later reversing research of the tidal current energy water turbine, and the experimental foundation is laid for the wide application of the tidal current energy water turbine.
Description
Technical Field
The utility model belongs to the technical field of fluid machinery, concretely relates to trend can hydraulic turbine experimental apparatus with reversing mechanism.
Background
Tidal current energy is one type of ocean energy, the storage capacity is large, the water turbine is arranged in the ocean, the impeller of the water turbine rotates at a high speed under the impact action of tidal current, the transmission mechanism drives the generator to generate electricity, and finally the conversion of kinetic energy of the tidal current energy into electric energy is realized. The horizontal shaft type tidal current energy water turbine has the characteristics of simple installation and maintenance, relatively mature technology and high efficiency, and is widely applied to the development and utilization of tidal current energy.
The existing horizontal shaft type tidal current energy water turbine does not have a reversing function, can only work in a fixed incoming flow direction, and the flowing direction of seawater in a certain area is often changed in the process of tidal rising and falling, so that the efficiency of the water turbine is low. Therefore, the tidal current energy water turbine needs to be improved, a reversing device is added for carrying out model experiments, and an experimental foundation is laid for the research and wide application of the tidal current energy water turbine.
Disclosure of Invention
An object of the utility model is to provide a trend can hydraulic turbine experimental apparatus with reversing mechanism, solve among the prior art trend can the hydraulic turbine can not change along with the trend and the technical problem of automatic switching-over.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a tidal current energy water turbine experimental device with a reversing mechanism comprises a support and a main body structure which are arranged in an experimental water tank, wherein the support is vertically arranged, the main body structure is rotatably arranged at the top of the support,
the main body structure comprises a hub and a nacelle shell; a rotating shaft is rotatably arranged in the engine room shell along the length direction of the engine room shell through a bearing, the front end of the rotating shaft extends out of the engine room shell and is fixedly connected with a hub, and at least three blades are arranged on the hub;
a main wing is arranged on one side of the cabin shell, and an auxiliary wing is arranged on the other side of the cabin shell; wherein the main wing is hinged with the cabin shell; the auxiliary wing is fixedly connected with the cabin shell.
In this application, through setting up cabin casing both sides and setting up main wing and aileron, rotate the major structure simultaneously and set up at the pillar top, change the direction of incoming flow, the main wing receives the incoming flow and strikes the relative cabin casing after and rotates certain angle and open, strikes the main wing then, and the major structure left and right sides atress is uneven, leads to whole major structure to take place to rotate around the pillar, and the rudder tail realizes the hydraulic turbine switching-over. The model experiment is carried out on the tidal current energy water turbine through the device, help is provided for the later reversing research of the tidal current energy water turbine, and the experimental foundation is laid for the wide application of the tidal current energy water turbine.
Preferably, the nacelle shell is rotatably connected with the strut through a thrust bearing.
Further preferably, a limit baffle is arranged at the hinged position of the wing and the cabin shell, and the main wing can rotate within the range of 0-90 degrees. Through setting up limit baffle, prevent that the main wing from receiving to rotate 180 back and the coincidence of cabin casing after the incoming flow strikes relatively cabin casing.
Preferably, the main wing comprises a first arc-shaped plate and a second arc-shaped plate, the first arc-shaped plate is a part of the side wall of the cylindrical pipeline, and the second arc-shaped plate is a part of the side wall of the circular truncated cone-shaped pipeline; one end of the first arc-shaped plate is hinged with the engine room shell, the other end of the first arc-shaped plate is fixedly connected with the second arc-shaped plate, the second arc-shaped plate and the first arc-shaped plate are arranged in an inclined mode, and the cylinder where the first arc-shaped plate is located coincides with the central line of the circular table where the second arc-shaped plate is located.
Through designing the main wing into the arc, be convenient for open the main wing in order to increase incoming flow impact area.
The outer contour of the cabin shell is cylindrical, when the main wing is closed, the first arc-shaped plate is matched with the outer wall of the cabin shell, and the included angle alpha between the generatrix of the circular table where the second arc-shaped plate is located and the central line of the cabin is 15-75 degrees.
The second arc-shaped plate is arranged in an inclined mode, the incoming flow impact area is increased, and the main wing is convenient to open.
The shape of main wing and aileron is the same, and the first arc of aileron is fit for cabin shell outer wall.
Further optimization, a return spring is arranged between the main wing and the cabin shell, a groove is formed in the cabin shell, one end of the spring is connected with the main wing, and the other end of the spring is connected with a groove bottom plate; when the first arc-shaped plate of the main wing is tangent to the outer wall of the cabin shell, the spring is contained in the groove.
Through the arrangement of the spring, after the replacement is finished, the main wing is matched with the outer wall of the cabin shell even if the main wing is reset, and the moment balance of the left side and the right side of the main structure is ensured; while being ready for the next commutation.
Further optimize, hub and blade pass through the detachable connection of bolt, dismouting, change convenience.
Further optimizing, the tail part of the cabin shell is provided with a tail rudder, and the tail rudder is fixedly connected with the cabin shell.
The tail rudder is of an arc sheet structure which is symmetrical up and down and left and right, and the center line of the tail rudder is superposed with the center line of the engine room.
The experimental method based on the tidal current energy water turbine experimental device with the reversing mechanism comprises the following steps:
(1) installing the tidal current energy water turbine experimental device with the reversing mechanism in an experimental water tank, giving an incoming current speed, impacting blades, and driving a hub and a rotating shaft to rotate relative to a cabin shell;
(2) the incoming flow direction in the experimental water tank is changed, after the second arc-shaped plate of the main wing is impacted by incoming flow, the whole main wing is driven to rotate by a certain angle relative to the cabin shell to be opened, the spring is in a stretching state, the opened main wing is continuously impacted by the incoming flow, so that the left side and the right side of the main body structure are unbalanced in stress, the whole main body structure rotates around the supporting column, the reversing of the water turbine is realized, and the blades can be fully impacted by the incoming flow to rotate;
(3) after the main structure rotates a certain angle around the pillar, the included angle between the incoming flow direction and the opened main wing changes, the impact force of the incoming flow on the main wing is smaller than the restoring force of the spring, the main wing rotates reversely to approach the cabin shell until the first arc-shaped plate is matched with the outer wall of the cabin shell, the main structure rotates around the pillar, and the primary reversing is finished.
Compared with the prior art, the utility model following beneficial effect has:
1. the utility model discloses a device can the hydraulic turbine to the trend and carry out model experiment, for the switching-over research that the trend can the hydraulic turbine later provides help, the more wide application that the trend can the hydraulic turbine is laid down the experiment basis. And this application trend can hydraulic turbine experimental apparatus with reversing mechanism installs in the experiment basin, simple structure, easy maintenance.
2. This application trend can hydraulic turbine experimental apparatus with reversing mechanism sets up main wing and aileron through setting up cabin casing both sides, rotates the major structure simultaneously and sets up at the pillar top, can accomplish the main wing and open to closed process under the condition that incoming flow speed direction level changes to accomplish the backward that trades at the hydraulic turbine, reduce the main wing and obtain the influence of ability to the hydraulic turbine.
3. The utility model provides a trend can hydraulic turbine experimental apparatus with reversing mechanism, the blade is for dismantling the type, can provide experimental facilities support for studying wing section optimization and the wing section selection under the different waters.
4. The tidal current energy water turbine experimental device with the reversing mechanism can be detachably arranged on a main wing, an auxiliary wing and a tail vane on a cabin according to specific experimental requirements, and experimental equipment support can be provided for research on the optimal design of the main wing, the auxiliary wing and the tail vane on the cabin of the water turbine under the condition that the wing profile of the water turbine changes.
Drawings
Fig. 1 is a schematic structural diagram of a tidal current energy water turbine experimental device with a reversing mechanism according to the present invention;
FIG. 2 is a cross-sectional view of the experimental device of the water turbine of the present invention along the axis;
fig. 3 is a schematic structural diagram of the main wing according to the present invention.
Detailed Description
The following detailed description will be made with reference to the accompanying drawings and examples, wherein the following embodiments do not limit the protection scope of the present invention, and any equivalent modifications made on the basis of the technical solution all belong to the protection scope of the present invention.
As shown in fig. 1-3, the tidal current energy water turbine experimental device with the reversing mechanism comprises a support 7 and a main structure, wherein the support 7 is installed in an experimental water tank, and the main structure is rotatably arranged at the top of the support.
The main structure comprises a hub 2, a cabin shell 3 and a tail vane 6; a rotating shaft 10 is rotatably arranged in the engine room shell 3 along the length direction of the engine room shell through a bearing 9, the front end of the rotating shaft 10 extends out of the engine room shell 3 and is fixedly connected with a hub 2, and three blades 1 are arranged on the hub 2; the tail rudder 6 is arranged at the tail part of the cabin shell;
a main wing 4 is arranged on one side of the cabin shell, and an auxiliary wing is arranged on the other side of the cabin shell, wherein the main wing 5 is hinged with the cabin shell through a hinge 4; the auxiliary wing is fixedly connected with the cabin shell and is matched with the cabin shell.
In this application, through setting up cabin casing both sides and setting up main wing and aileron, rotate the major structure simultaneously and set up at the pillar top, change the direction of incoming flow, the main wing receives the incoming flow and strikes the relative cabin casing after and rotates certain angle and open, strikes the main wing then, and the major structure left and right sides atress is uneven, leads to whole major structure to take place to rotate around the pillar, and the rudder tail realizes the hydraulic turbine switching-over. The model experiment is carried out on the tidal current energy water turbine through the device, help is provided for the later reversing research of the tidal current energy water turbine, and the experimental foundation is laid for the wide application of the tidal current energy water turbine.
In the present embodiment, the nacelle housing 3 and the tower 7 are rotatably connected by a thrust bearing 11.
In this embodiment, a hinge joint of the wing and the nacelle shell is provided with a limit baffle 12, and the main wing can rotate within a range of 0 to 90 °. Through setting up limit baffle, prevent that the main wing from receiving to rotate 180 back and the coincidence of cabin casing after the incoming flow strikes relatively cabin casing.
In this embodiment, the hub 2 and the blade 1 are detachably connected through the bolt 8, so that the assembly, disassembly and replacement are convenient.
In this embodiment, a return spring is arranged between the main wing and the cabin shell, a groove is arranged on the cabin shell, one end of the spring is connected with the main wing, and the other end of the spring is connected with a groove bottom plate; when the first arc-shaped plate of the main wing is tangent to the outer wall of the cabin shell, the spring is contained in the groove.
Through the arrangement of the spring, after the replacement is finished, the main wing is matched with the outer wall of the cabin shell even if the main wing is reset, and the moment balance of the left side and the right side of the main structure is ensured; while being ready for the next commutation.
In this embodiment, the main wing 5 includes a first arc-shaped plate 51 and a second arc-shaped plate 52, the first arc-shaped plate 51 is a part of the side wall of the cylindrical pipe, and the second arc-shaped plate 52 is a part of the side wall of the circular truncated cone-shaped pipe; one end of the first arc-shaped plate is hinged with the cabin shell, the other end of the first arc-shaped plate is fixedly connected with the second arc-shaped plate, the second arc-shaped plate and the first arc-shaped plate are obliquely arranged, and the cylinder where the first arc-shaped plate is located coincides with the central line of the circular table where the second arc-shaped plate is located; the wing is designed into an arc-shaped plate shape, so that the wing is convenient to attach to a cabin shell, the blocking effect on water flow in the operation process of the water turbine is reduced, and the water thrust borne by the water turbine is reduced; and the second arc-shaped plate in the wing can provide the initial moment required by the reversing of the water turbine under the impact action of the water flow under the condition that the water flow direction is changed horizontally.
The outer contour of the cabin shell is cylindrical, when the main wing is closed, the first arc-shaped plate is matched with the outer wall of the cabin shell, and the included angle alpha between the bus of the circular table where the second arc-shaped plate is located and the center line of the cabin is 30 degrees.
The main wing and the auxiliary wing are the same in shape.
The experimental method based on the tidal current energy water turbine experimental device with the reversing mechanism comprises the following steps:
(1) installing the tidal current energy water turbine experimental device with the reversing mechanism in an experimental water tank, giving an incoming current speed, impacting blades, and driving a hub and a rotating shaft to rotate relative to a cabin shell;
(2) the incoming flow direction in the experimental water tank is changed, after the second arc-shaped plate of the main wing is impacted by incoming flow, the whole main wing is driven to rotate by a certain angle relative to the cabin shell to be opened, the spring is in a stretching state, the opened main wing is continuously impacted by the incoming flow, so that the left side and the right side of the main body structure are unbalanced in stress, the whole main body structure rotates around the supporting column, the reversing of the water turbine is realized, and the blades can be fully impacted by the incoming flow to rotate;
(3) after the main structure rotates a certain angle around the pillar, the included angle between the incoming flow direction and the opened main wing changes, the impact force of the incoming flow on the main wing is smaller than the restoring force of the spring, the main wing rotates reversely to approach the cabin shell until the first arc-shaped plate is matched with the outer wall of the cabin shell, the main structure rotates around the pillar, and the primary reversing is finished.
In the experiment, the water turbine experimental device is arranged in an experimental water tank, the incoming flow speed of water flow is controlled to be 0.4m/s, so that the water flow impacts blades to drive a hub and a rotating shaft to rotate relative to a cabin shell. Horizontally changing the incoming flow direction of the experimental water tank, providing initial torque required by the water turbine for reversing by a second arc-shaped plate 52 in the main wing under the impact action of water flow, gradually opening the main wing through a hinge, and increasing the torque required by reversing; when the rotation angle of a cabin of the water turbine is larger than 0 degree, the included angle between the tail rudder and the water flow direction is also larger than 0 degree, so that the torque required by reversing is further increased by the tail rudder under the impact action of water flow; when the water turbine engine room rotates by 90 degrees, the main wing gradually rotates around the hinge to be close to the engine room shell under the action of forward impact of water flow and the action of the restoring force of the spring until the engine room is closed; at the moment, the tail vane continues to assist the water turbine to finally complete 180-degree reversing under the impact action of water flow; the water turbine stably runs at a reversing angle of 180 degrees after reversing. And the bidirectional development and utilization of tidal current energy are realized aiming at the characteristic that the flow direction of the tidal current energy is reciprocating and horizontal. The tidal current energy water turbine experimental device with the reversing mechanism obtains a satisfactory trial effect through repeated test verification.
The above examples are merely illustrative for clarity and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (7)
1. A tidal current energy water turbine experimental device with a reversing mechanism is characterized by comprising a support and a main body structure, wherein the support is arranged in an experimental water tank, the support is vertically arranged, the main body structure is rotatably arranged at the top of the support,
the main body structure comprises a hub and a nacelle shell; a rotating shaft is rotatably arranged in the engine room shell along the length direction of the engine room shell through a bearing, the front end of the rotating shaft extends out of the engine room shell and is fixedly connected with a hub, and at least three blades are arranged on the hub;
a main wing is arranged on one side of the cabin shell, and an auxiliary wing is arranged on the other side of the cabin shell; wherein the main wing is hinged with the cabin shell; the auxiliary wing is fixedly connected with the cabin shell.
2. The tidal current energy water turbine experimental device with the reversing mechanism is characterized in that the cabin shell is in rotary connection with the support column through a thrust bearing.
3. The tidal current energy water turbine experimental device with the reversing mechanism as claimed in claim 1, wherein: and a limit baffle is arranged at the hinged position of the wing and the cabin shell, and the main wing can rotate in the range of 0-90 degrees.
4. The tidal current energy water turbine experimental device with the reversing mechanism according to any one of claims 1 to 3, wherein: the main wing comprises a first arc-shaped plate and a second arc-shaped plate, the first arc-shaped plate is a part of the side wall of the cylindrical pipeline, and the second arc-shaped plate is a part of the side wall of the circular truncated cone-shaped pipeline; one end of the first arc-shaped plate is hinged with the cabin shell, the other end of the first arc-shaped plate is fixedly connected with the second arc-shaped plate, the second arc-shaped plate and the first arc-shaped plate are obliquely arranged, and the cylinder where the first arc-shaped plate is located coincides with the central line of the circular table where the second arc-shaped plate is located;
the outer contour of the cabin shell is cylindrical, when the main wing is closed, the first arc-shaped plate is matched with the outer wall of the cabin shell, and the included angle alpha between the generatrix of the circular table where the second arc-shaped plate is located and the center line of the cabin is 15-75 degrees;
the shape of main wing and aileron is the same, and the first arc of aileron is fit for cabin shell outer wall.
5. The tidal current energy water turbine experimental device with the reversing mechanism is characterized in that: a return spring is arranged between the main wing and the cabin shell, a groove is formed in the cabin shell, one end of the spring is connected with the main wing, and the other end of the spring is connected with a groove bottom plate; when the first arc-shaped plate of the main wing is tangent to the outer wall of the cabin shell, the spring is contained in the groove.
6. The tidal current energy water turbine experimental device with the reversing mechanism as claimed in claim 1, wherein: the tail part of the engine room shell is provided with a tail rudder which is fixedly connected with the engine room shell.
7. The tidal current energy water turbine experimental device with the reversing mechanism as claimed in claim 1, wherein: the hub is detachably connected with the blades through bolts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120822047.1U CN214998002U (en) | 2021-04-21 | 2021-04-21 | Tidal current energy water turbine experimental device with reversing mechanism |
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| CN202120822047.1U CN214998002U (en) | 2021-04-21 | 2021-04-21 | Tidal current energy water turbine experimental device with reversing mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417785A (en) * | 2021-04-21 | 2021-09-21 | 中国长江三峡集团有限公司 | Tidal current energy water turbine experimental device with reversing mechanism and experimental method |
| CN114215674A (en) * | 2022-01-18 | 2022-03-22 | 东北师范大学 | Self-adaptive stable-convection horizontal-axis tidal current energy water turbine |
-
2021
- 2021-04-21 CN CN202120822047.1U patent/CN214998002U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417785A (en) * | 2021-04-21 | 2021-09-21 | 中国长江三峡集团有限公司 | Tidal current energy water turbine experimental device with reversing mechanism and experimental method |
| CN114215674A (en) * | 2022-01-18 | 2022-03-22 | 东北师范大学 | Self-adaptive stable-convection horizontal-axis tidal current energy water turbine |
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