CN201874731U - Vertical shaft type tidal power generation device - Google Patents

Abstract

The utility model provides a vertical axis tidal current power generation device. It includes three modules: the upper platform part, the supporting frame part and the impeller part; the upper platform part mainly includes generators, gearboxes, horizontal connecting shafts, supporting platforms, pillars and vertical connecting shafts; the supporting frame part consists of upper frame plates, lower frame plates 1. The left frame plate and the right frame plate are connected; the impeller part includes a main shaft, a spoke sleeve, a spoke, a spoke shaft, blades, a blade shaft, a wheel rim and an adaptive angle-of-attack device. The utility model provides a device with good start-up and power generation performance, good structural strength, and can be developed in the direction of large-scale, and can be applied under the floating platform, pile foundation and tension back, and is convenient for production, manufacture and installation. And debugging, a high-performance vertical axis tidal current power generation device suitable for engineering applications.

Description

A vertical axis tidal current power generation device

technical field

The utility model relates to a vertical axis tidal current generating device, which belongs to the field of hydraulic machinery and hydraulic generators.

Background technique

Tidal energy refers to the kinetic energy of seawater flow, mainly the relatively stable flow in submarine channels and straits and the regular seawater flow caused by tides. As a renewable energy source, tidal current energy is rich in reserves and widely distributed, and has excellent development prospects and value. my country's exploitable tidal current energy resources rank first in the world, and how to utilize tidal current energy resources has important practical significance.

The main way to utilize tidal current energy is to generate electricity. Its working principle is similar to that of wind power generation and conventional hydropower generation, that is, the kinetic energy of seawater is converted into electrical energy through an energy conversion device. The tidal current energy conversion device mostly adopts the form of a water turbine. The horizontally flowing seawater impacts the impeller to convert the kinetic energy of the water flow into the mechanical energy of the water turbine rotation. The water turbine drives the generator to generate electricity through the mechanical transmission system, and finally converts it into electrical energy.

At present, tidal current power generation devices can be divided into horizontal axis type and vertical axis type according to the impeller structure. The rotation axis of the impeller of the vertical axis tidal current power generation device is perpendicular to the direction of water flow and the sea level. Compared with the horizontal-axis tidal current device, the impeller of the vertical-axis tidal current power generation device is easy to start, does not require high water depth, and is not affected by the change of the flow direction during operation. The control mechanism is relatively simple and the efficiency is high, so it has been widely used. Follow and study. Harbin Engineering University has carried out tidal current power generation research for many years, and concluded that the traditional vertical axis tidal current power generation device has the following problems in power generation: (1) When the main shaft of the impeller rotates with a single support, the main shaft has a large bending moment load, and the structural strength of the main shaft is relatively high. high. When the main shaft of the impeller rotates with double supports, due to the deformation of the device, the friction of the main shaft increases, which affects the start-up and power generation performance of the tidal current power generation device; (2) the self-starting performance and power generation performance of the impeller of the fixed-blade vertical-axis tidal current power generation device are relatively poor; (3 ) The vertical self-weight load and horizontal impact load of the impeller and main shaft of the large-scale vertical axis tidal current power generation device are relatively large, and the structural strength requirements of the impeller and main shaft are relatively high, and the device is not suitable for large-scale development; (4) The application platform and use environment are single , which is not conducive to large-scale production and application.

The patent document with the publication number CN 101705904 A discloses a high-power vertical axis tidal current power generation device. The base of the gravity tower and the tower are connected by a universal ball joint, the engine room is installed on the top of the tower, and the outer edge of the engine room is distributed with anchor chain plate eyes, and the floating bucket and the anchor are connected to the anchor by cables, and the main shaft of the turbine is sleeved on the On the pylon, bearings are installed at both ends of the main shaft of the turbine. The blades of the water turbine are evenly distributed on the hub of the main shaft by the spokes. The bevel gear on the main shaft engages with the small bevel gear on the generator shaft in the nacelle. The lower wall of the engine room and the tower column are equipped with a sealed shaft sleeve, and the base and the universal ball joint are connected by a flange. Produce clean and renewable energy needed for daily life and exert positive social benefits. Publication No. CN 101705904 A utility model patent high-power vertical axis tidal current power generation device and the utility model patent a high-performance vertical axis tidal current power generation device have differences in structural composition and form, application platform and environment, as well as specific working methods and performance. Significantly different.

Contents of the invention

The purpose of the utility model is to provide a vertical axis tidal current power generation device which has better start-up and power generation performance, better structural strength, and can be developed in the direction of large-scale.

The vertical axis tidal current power generation device of the utility model includes three modules: an upper platform part, a supporting frame part and an impeller part; the upper platform part mainly includes a generator, a gearbox, a horizontal connecting shaft, a supporting platform, a pillar and a vertical connecting shaft, and The pillars are fixed on the upper frame plate of the supporting frame part, the generator and the gearbox are arranged on the supporting platform, the gearbox and the generator are connected by a horizontal connecting shaft, the vertical connecting shaft is arranged under the The main shaft of the impeller part; the supporting frame part is composed of the upper frame plate, the lower frame plate, the left frame plate and the right frame plate; the impeller part includes the main shaft, spoke sleeves, spokes, spoke shafts, blades, blade shafts, rims and adaptive Angle of attack control device, the upper, middle and lower positions of the main shaft are respectively equipped with spoke sleeves, each spoke sleeve is symmetrically provided with the same number of spokes, one end of the spoke is fixed on the spoke sleeve through the spoke shaft, and the other end is fixed through the spoke shaft On the inner side of the rim, the two ends of the blade are limited on the rim by the blade shaft, and the upper end of each blade shaft is provided with an adaptive angle-of-attack device.

The utility model can also include:

1. The spokes are streamlined.

2. The adaptive angle-of-attack control device is installed on the rotary rod on the blade shaft, the limit post fixed on the spoke, and the spring between the limit post and the rotary rod.

3. There are flexible bearings on the upper and lower frame plates.

4. The two ends of the upper and lower frame plates are respectively equipped with installation interfaces.

The utility model provides a device with good start-up and power generation performance, good structural strength, and can be developed in the direction of large-scale, and can be applied under the floating platform, pile foundation and tension back, and is convenient for production, manufacture and installation. And debugging, a high-performance vertical axis tidal current power generation device suitable for engineering applications.

The upper platform part includes generator, generator seat, gearbox, gearbox seat, horizontal connecting shaft, supporting platform, pillars, rotating bolts, vertical connecting shaft and vertical connecting shaft flange. The support platform is supported by pillars and fixed on the upper frame plate by rotating bolts. The supporting platform is equipped with a generator and a gear box, the generator is used to convert mechanical energy into electrical energy, and the gear box is used to change the direction and speed of mechanical transmission, so that the generator has a high power generation performance. The gearbox and generator are connected by a horizontal connection shaft. The generator is provided with a generator base, and the gear box is provided with a gear box base, the generator is connected with the supporting platform through the generator base, and the gear box is connected with the supporting platform through the gear box base. A vertical connecting shaft is arranged below the gearbox, a vertical connecting shaft flange is arranged on the vertical connecting shaft, and a vertical connecting shaft flange connecting hole is arranged on the vertical connecting shaft flange for connecting the impeller part.

The support frame part has the function of supporting the upper platform and the impeller part. The support frame includes an upper frame plate, a lower frame plate, a left frame plate, a right frame plate and flexible bearings. There are flexible bearings on the upper and lower frame plates. The flexible bearings are used to overcome the problem of increased rotational friction of the main shaft caused by the slight deformation of the support frame, and have the function of connecting and supporting the main shaft. The two ends of the upper and lower frame plates are respectively provided with installation interfaces, which are used for installation and connection with the floating platform, pile foundation and tension legs, so that the application platform and application environment are diversified. The upper frame plate is also provided with upper platform connecting screw holes for connecting the upper platform part.

The impeller part includes a main shaft, a spoke sleeve, a main shaft connecting flange, a spoke, a spoke shaft, blades, a blade shaft, a wheel rim and an adaptive angle-of-attack device. The upper, middle and lower positions of the main shaft of the impeller part are provided with spoke sleeves respectively, and the spoke sleeves are used to connect the main shaft and the spoke shaft, and are welded to the main shaft. Each spoke sleeve is symmetrically provided with the same number of spokes. The spokes are streamlined. One end is welded to the spoke sleeve through the spoke shaft, and the other end is welded to the inner side of the rim through the spoke shaft. The spokes and the spoke shaft enhance the structural strength while reducing the Less spoiler interference. Both ends of the blade are limited on the rim by the blade shaft, and the blade shaft can rotate freely on the rim. The upper end of each blade shaft is provided with an adaptive control angle of attack device, which includes a spring, a limit post and a rotary rod. The self-adaptive control angle of attack device can automatically adjust the angle of attack of the blades to the optimum value with the help of spring force, improve the hydrodynamic performance of the impeller, and then improve the power generation performance of the device.

The utility model has the following characteristics: (1) adopts flexible bearing design, double support rotation, reduces the bending moment load and friction of the main shaft, and improves the starting and power generation performance of the impeller; (2) adopts the self-adaptive control attack angle blade design , which improves the starting performance and power generation efficiency of the impeller; (3) The design of the upper and lower rims and the upper, middle and lower streamlined spokes, and the double-supported rotation design of the supporting frame part improve the structural strength of the impeller and the entire device, increasing the The horizontal maximum load capacity of the device improves the device's own weight bearing capacity, making the vertical axis tidal current power generation device suitable for large-scale development; (4) The installation interface mode is adopted, which can be installed under the floating platform or on the pile foundation and various tensions, so that the application platform and the application environment are far away; (5) The modular structure is adopted, which is convenient for production, manufacturing, installation and debugging.

Description of drawings

Fig. 1 General structure diagram of high-performance vertical axis tidal current power generation device;

Figure 2 is a partial structural diagram of the upper platform;

Figure 3 is a partial structural diagram of the support frame;

Figure 4 Impeller partial structure diagram;

Fig. 5 The structural diagram of the self-adaptive angle-of-attack device.

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawing example:

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the utility model patent includes three modules: the upper platform part, the support frame part and the impeller part.

The upper platform part includes a generator 1, a horizontal connecting shaft 2, a gearbox 3, a gearbox seat 4, a supporting platform 5, six pillars 6, a generator seat 7, six rotating bolts 8, a vertical Connecting shaft flange 9, and a vertical connecting shaft 11. The support platform 5 is supported by six pillars 6 and fixed on the upper frame plate 12 by six rotating bolts 8 . The left end of the support platform 5 is provided with a generator 1 and the right end is provided with a gear box 3 . The gearbox 3 and the generator 1 are connected through a horizontal connection shaft 2 . The generator 1 is provided with a generator base 7, the gear box 3 is provided with a gear box base 4, the generator 1 is connected with the supporting platform 5 through the generator base 7, and the gear box 3 is connected with the supporting platform 5 through the gear box base 4. The bottom of the gear box 3 is provided with a vertical connecting shaft 11, the vertical connecting shaft 11 is provided with a vertical connecting shaft flange 9, and the vertical connecting shaft flange 9 is provided with a vertical connecting shaft flange connecting hole 10 for connecting the impeller part.

The support frame part includes an upper frame plate 12 , a lower frame plate 13 , a left frame plate 14 , a right frame plate 15 and two flexible bearings 16 . The middle parts of the upper frame plate 12 and the lower frame plate 13 are provided with flexible bearings 16 respectively, and the flexible bearings 16 are used to connect and support the main shaft 19, and are used to reduce the frictional resistance of the main shaft 19 due to the slight deformation of the supporting frame. Both ends of the upper frame plate 12 and the lower frame plate 13 are respectively provided with installation interfaces 18, and the installation interfaces 18 are used for connection with the floating platform, pile foundation or tension relief. The upper frame plate 12 is also provided with an upper platform connecting screw hole 17 , and the upper platform connecting screw hole 17 is used for connecting the rotating bolt 8 .

The impeller part includes a main shaft 19, three spoke sleeves 20, a main shaft connecting flange 21, nine spokes 23, nine spoke shafts 24, three blades 25, three blade shafts 26, two rims 27 and three A set of adaptive control angle of attack device. The upper, middle and lower positions of the main shaft 19 are respectively provided with spoke sleeves 20, the spoke sleeves 20 are welded to the main shaft 19, each spoke sleeve 20 is symmetrically provided with the same number of spokes 23, and one end of the spokes 23 passes through the spoke shaft 24 Welded on the spoke sleeve 20, the other end is welded to the inner side of the wheel rim 27 through the spoke shaft 24. The upper end of the main shaft 19 is provided with a main shaft connecting flange 21 , and the main shaft connecting flange 21 is provided with a main shaft flange connecting hole 22 for connecting the vertical connecting shaft flange 9 . Both ends of the blade 25 are limited on the rim 27 by the blade shaft 26 , and the blade shaft 26 can rotate freely on the rim 27 . The upper end of each blade shaft 26 is provided with an adaptive angle-of-attack device, which includes a rotary rod 28 , two limit posts 29 and two springs 30 . The self-adaptive angle-of-attack control device can automatically adjust the angle of attack of the blade 25 to an optimal value by means of the force of the spring 30, thereby improving the hydrodynamic performance of the impeller.

When working, the tidal current of the horizontal flow impacts the impeller blade 25, and the blade 25 deflects through the blade shaft 26 under the action of the external force of the water flow and the force of the spring 30. When the blade 25 deflects a certain angle, the impeller starts automatically, and the blade 25 passes through the spoke shaft 24, Spokes 23 and spoke sleeves 20 drive the main shaft 19 to rotate. The main shaft 19 passes through the main shaft connecting flange 21, the vertical connecting shaft flange 9, and the vertical connecting shaft 11. The generator 1 on the support platform 5 is driven to generate electricity, and the kinetic energy of the water flow is converted into electric energy.

Claims (9)

1. a vertical shaft tidal generating set comprises upper platform part, support frame part, three modules of impeller part; It is characterized in that: the upper platform part mainly comprises generator, gear-box, horizontal coupling shaft, support platform, pillar and vertical coupling shaft, support platform is fixed on the upper frame plate of support frame part by pillar, generator and gear-box are arranged at support platform, connect by horizontal coupling shaft between gear-box and the generator, vertical coupling shaft is arranged at the below of gear-box, and vertical coupling shaft connects the main shaft of impeller part; The support frame part is connected to form by upper frame plate, lower frame frame plate, left frame plate and right frame plate; Impeller partly comprises main shaft, spoke cover, spoke, spoke shaft, blade, sharf, wheel rim and self-adaptive controlled angle of attack device, three positions, the upper, middle and lower of main shaft are provided with the spoke cover respectively, each spoke puts the spoke that is arranged with similar number, spoke one end is fixed in by spoke shaft that spoke puts, the other end is fixed in the wheel rim inboard by spoke shaft, the blade two ends are limited on the wheel rim by sharf, and each sharf upper end is provided with self-adaptive controlled angle of attack device.

2. a kind of vertical shaft tidal generating set according to claim 1 is characterized in that: described spoke is streamlined.

3. a kind of vertical shaft tidal generating set according to claim 1 and 2 is characterized in that: described self-adaptive controlled angle of attack device is installed on pivoted lever on the sharf, is fixed in limited post, the spring between limited post and pivoted lever on the spoke.

4. a kind of vertical shaft tidal generating set according to claim 1 and 2 is characterized in that: upper and lower frame plate is provided with flexible bearing.

5. a kind of vertical shaft tidal generating set according to claim 3 is characterized in that: upper and lower frame plate is provided with flexible bearing.

6. a kind of vertical shaft tidal generating set according to claim 1 and 2 is characterized in that: the two ends of upper and lower frame plate are respectively equipped with mounting interface.

7. a kind of vertical shaft tidal generating set according to claim 3 is characterized in that: the two ends of upper and lower frame plate are respectively equipped with mounting interface.

8. a kind of vertical shaft tidal generating set according to claim 4 is characterized in that: the two ends of upper and lower frame plate are respectively equipped with mounting interface.

9. a kind of vertical shaft tidal generating set according to claim 5 is characterized in that: the two ends of upper and lower frame plate are respectively equipped with mounting interface.

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