阅读说明：本技术 一种用于电力系统的高效型堤坝水利发电装置 (A high-efficient type dykes and dams hydroelectric generation device for electric power system ) 是由 葛军 于 2019-10-26 设计创作，主要内容包括：本发明涉及一种用于电力系统的高效型堤坝水利发电装置,包括浮块、浮板、发电机构、导流机构、两个滑环和两个滑轨,导流机构包括四个导流板和三个水电组件,水电组件包括转轴、第一轴承、驱动锥齿轮、从动锥齿轮、第一发电机和若干水叶,发电机构包括齿条、第一齿轮、支架和两个发电组件,发电组件包括第二轴承、第二齿轮、转管、第二发电机和连接轴,该用于电力系统的高效型堤坝水利发电装置通过导流机构引导水流在水平方向的流动,并利用不同流向的水流进行水利发电,不仅如此,通过发电机构可在浮块随液面升降移动过程中,进行额外的发电,增加设备的供电量,从而提高了设备的实用性。(The invention relates to a high-efficiency dam hydroelectric device for an electric power system, which comprises a floating block, a floating plate, a power generation mechanism, a flow guide mechanism, two sliding rings and two sliding rails, wherein the flow guide mechanism comprises four flow guide plates and three hydroelectric components, each hydroelectric component comprises a rotating shaft, a first bearing, a driving bevel gear, a driven bevel gear, a first power generator and a plurality of water blades, each power generation mechanism comprises a rack, a first gear, a bracket and two power generation components, each power generation component comprises a second bearing, a second gear, a rotating pipe, a second power generator and a connecting shaft, the high-efficiency dam hydroelectric device for the electric power system guides the flow of water flow in the horizontal direction through the flow guide mechanism and conducts hydroelectric power generation by utilizing water flows in different flow directions, and moreover, the power generation mechanism can conduct additional power generation in the process that the floating block moves up and down along with the liquid level to increase the power supply amount of equipment, thereby improving the practicability of the equipment.)

1. A high-efficiency dam hydroelectric generation device for an electric power system is characterized by comprising a floating block (1), a floating plate (2), a power generation mechanism, a flow guide mechanism, two sliding rings (3) and two sliding rails (4), wherein the two sliding rings (3) are respectively fixed on two sides of the floating block (1), the floating plate (2) is fixed below the floating block (1), the flow guide mechanism is arranged below the floating plate (2), the power generation mechanism is arranged on one side of the floating block (1), the sliding rings (3) correspond to the sliding rails (4) in a one-to-one manner, and the sliding rails (4) are L-shaped, and the sliding rings (3) are sleeved on the vertical parts of the sliding rails (4);

the water conservancy diversion mechanism includes four guide plates (5) and three water and electricity subassembly, the below at kickboard (2) is fixed in guide plate (5), and each water and electricity subassembly sets gradually between two adjacent guide plates (5), in four guide plates (5), is parallel to each other for two guide plates (5) of being separated by, and the contained angle of each two adjacent guide plates (5) equals, the water and electricity subassembly includes pivot (6), first bearing (7), drive bevel gear (8), driven bevel gear (9), first generator (10) and a plurality of water leaf (11), water leaf (11) circumference evenly distributed is in the one end of pivot (6), the other end at pivot (6) is fixed in drive bevel gear (8), the below at kickboard (2) is fixed in first bearing (7), first bearing (7) cover is established on pivot (6), drive bevel gear (8) and driven bevel gear (9) mesh, the first generator (10) is fixed in the floating block (1), an input shaft of the first generator (10) penetrates through the floating block (1) and the floating plate (2) to be fixedly connected with the driven bevel gear (9), and the rotation directions of the water blades (11) in two adjacent hydroelectric assemblies are opposite;

the power generation mechanism comprises a rack (12), a first gear (13), a support (14) and two power generation assemblies, wherein the rack (12) is located on one side of a floating block (1), the first gear (13) is meshed with the rack (12), the support (14) is U-shaped, two ends of the support (14) are fixedly connected with the floating block (1), the first gear (13) is sleeved at the center of the support (14), the two power generation assemblies are arranged on one side, away from the rack (12), of the first gear (13) from top to bottom, each power generation assembly comprises a second bearing (15), a second gear (16), a rotating pipe (17), a second power generator (18) and a connecting shaft (19), the second bearing (15) and the second power generator (18) are both fixed on the floating block (1), and the second bearing (15) is connected with one side of the second gear (16), the rotating pipe (17) is fixed to the other side of the second gear (16), a connecting unit is arranged in the rotating pipe (17), the connecting unit is connected with a second generator (18) through a connecting shaft (19), the second gear (16) is meshed with the first gear (13), and the two second gears (16) are meshed with each other.

2. An efficient embankment hydro-power generation device for electric power system according to claim 1, wherein the first gear (13) is provided with clamping plates (20) at both sides, and the clamping plates (20) are fixed on the bracket (14).

3. A high efficiency dam hydroelectric power generating apparatus as claimed in claim 1 wherein the side of the deflector (5) remote from the rack (12) is provided with a screen (21).

4. A high efficiency dam hydroelectric power generating apparatus as claimed in claim 3 wherein the horizontal cross-section of the screen (21) is in the shape of an arc, and the center of the arc cross-section of the screen (21) is located on the side of the screen (21) adjacent to the rack (12).

5. A high efficiency dam hydroelectric power generating apparatus as claimed in claim 1 wherein the vertical portion of said slide rails (4) is provided at the bottom with a protruding plate (22).

6. A high efficiency dam hydroelectric power generation apparatus for use in an electric power system as claimed in claim 1, the connecting unit comprises a fixed pipe (23), a spring (24), a flat plate (25), a moving rod (26), a moving block (27) and a plurality of intercepting units, the interception units are uniformly distributed on the inner wall of the connecting pipe in the circumferential direction, the fixed pipe (23) is fixed on the connecting shaft (19), the flat plate (25) and the spring (24) are both positioned at the inner side of the connecting pipe, the flat plate (25) is connected with the connecting shaft (19) through the spring (24), the spring (24) is in a compressed state, two ends of the moving rod (26) are respectively and fixedly connected with the moving block (27) and the flat plate (25), the vertical section of the moving block (27) is in the shape of a right triangle, and one right-angle side of the right triangle section of the moving block (27) is fixedly connected with the moving rod (26).

7. An efficient dam hydro-power generation installation for electric power systems as claimed in claim 6, wherein said interception unit comprises a roller (28).

8. The high efficiency dam hydroelectric power generating apparatus for electric power system according to claim 6, wherein a fixing ring (29) is provided in the fixing pipe (23), the fixing ring (29) is fixed on the inner wall of the fixing pipe (23), and the fixing ring (29) is fitted on the moving rod (26).

9. An efficient dam hydro-power generation device for electric power system according to claim 1, wherein the diameter of the first gear (13) is larger than the diameter of the second gear (16).

10. A high efficiency dam hydroelectric power generating apparatus as claimed in claim 1 wherein said deflector (5) is made of glass.

Technical Field

The invention relates to the field of hydroelectric power generation equipment, in particular to a high-efficiency dam hydroelectric power generation device for an electric power system.

Background

Hydroelectric power generation, and scientific technology for researching technical and economic problems of engineering construction, production, operation and the like for converting water energy into electric energy. The water energy used by hydroelectric power generation is mainly potential energy stored in water, and different types of hydropower stations need to be built for converting the water energy into electric energy.

At present, the device that utilizes hydrodynamic energy to generate electricity has a lot, but generally all utilizes the hydrodynamic energy of river to generate electricity, and the electricity generation form is fixed single, to some dykes and dams that lean on the coast around, owing to be difficult to introduce the sea water inside the generator, leads to current hydroelectric equipment to be difficult to realize the hydroelectric generation near dykes and dams, and then has reduced current hydroelectric device's practicality.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the high-efficiency dam hydroelectric generation device for the electric power system is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-efficiency dam hydroelectric generation device for an electric power system comprises a floating block, a floating plate, a generating mechanism, a flow guide mechanism, two sliding rings and two sliding rails, wherein the two sliding rings are respectively fixed on two sides of the floating block;

the guide mechanism comprises four guide plates and three hydroelectric components, the guide plates are fixed below the floating plate, each hydroelectric component is sequentially arranged between two adjacent guide plates, two guide plates are separated from each other in the four guide plates and are parallel to each other, the included angles of two adjacent guide plates are equal, the hydroelectric component comprises a rotating shaft, a first bearing, a driving bevel gear, a driven bevel gear, a first generator and a plurality of blades, the water vanes are evenly distributed at one end of the rotating shaft in the circumferential direction, the driving bevel gear is fixed at the other end of the rotating shaft, the first bearing is fixed below the floating plate, the first bearing is sleeved on the rotating shaft, the driving bevel gear is meshed with the driven bevel gear, the first generator is fixed in the floating block, an input shaft of the first generator is fixedly connected with the driven bevel gear through the floating block and the floating plate, and the rotation directions of the blades in two adjacent hydroelectric assemblies are opposite;

the power generation mechanism comprises a rack, a first gear, a bracket and two power generation components, the rack is positioned on one side of the floating block, the first gear is meshed with the rack, the bracket is U-shaped, two ends of the bracket are fixedly connected with the floating block, the first gear is sleeved at the center of the bracket, the two power generation assemblies are arranged on one side of the first gear far away from the rack from top to bottom, the power generation assembly comprises a second bearing, a second gear, a rotating pipe, a second generator and a connecting shaft, the second bearing and the second generator are both fixed on the floating block, the second bearing is connected with one side of the second gear, the rotating pipe is fixed on the other side of the second gear, a connecting unit is arranged in the rotating pipe and connected with a second generator through a connecting shaft, the second gear is meshed with the first gear, and the two second gears are meshed with each other.

Preferably, in order to avoid the first gear from sliding, clamping plates are arranged on two sides of the first gear and fixed on the bracket.

Preferably, in order to avoid aquatic weeds to wind around the rotating shaft and the water blades, a filter screen is arranged on one side, far away from the rack, of the guide plate.

Preferably, in order to facilitate the impurities to be separated from the filter screen, the horizontal cross section of the filter screen is in the shape of a circular arc, and the circle center of the circular arc cross section of the filter screen is located on one side, close to the rack, of the filter screen.

Preferably, in order to avoid the slip ring from being separated from the slide rail, the bottom end of the vertical part of the slide rail is provided with a convex plate.

Preferably, in order to ensure that one connecting shaft in one power generation assembly rotates positively in the two power generation assemblies in the lifting and moving process of the floating block, the connecting unit comprises a fixed pipe, a spring, a flat plate, a moving rod, a moving block and a plurality of intercepting units, the intercepting units are circumferentially and uniformly distributed on the inner wall of the connecting pipe, the fixed pipe is fixed on the connecting shaft, the flat plate and the spring are both positioned on the inner side of the connecting pipe, the flat plate is connected with the connecting shaft through the spring, the spring is in a compressed state, two ends of the moving rod are respectively and fixedly connected with the moving block and the flat plate, the vertical cross section of the moving block is in a right triangle shape, and one right-angle side of the right triangle cross section of the moving block.

Preferably, in order to facilitate wear of the moving mass, said intercepting unit comprises a roller.

Preferably, in order to realize the synchronous rotation of connecting axle and carriage release lever, fixed intraductal solid fixed ring that is equipped with, gu fixed ring fixes on the inner wall of fixed pipe, gu fixed ring overlaps establishes on the carriage release lever.

Preferably, in order to ensure the rotation speed of the connecting shaft, the diameter of the first gear is larger than that of the second gear.

Preferably, in order to enhance the corrosion resistance of the deflector, the deflector is made of glass.

The invention has the advantages that the high-efficiency dam hydroelectric generation device for the power system guides the flow of water flow in the horizontal direction through the flow guide mechanism, and utilizes the water flows in different flow directions to carry out hydroelectric generation, and moreover, the generating mechanism can carry out additional power generation in the process that the floating block moves up and down along with the liquid level, so that the power supply quantity of equipment is increased, and the practicability of the equipment is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a high efficiency dam hydroelectric power generation apparatus for an electric power system according to the present invention;

FIG. 2 is a top plan view of the high efficiency dam hydro-power plant for electric power systems of the present invention;

FIG. 3 is a schematic structural view of a deflector mechanism of the high efficiency dam hydroelectric generation apparatus for an electric power system of the present invention;

fig. 4 is a schematic structural view of a connection unit of the high-efficiency dam hydroelectric power generating apparatus for an electric power system according to the present invention;

in the figure: 1. the automatic transmission device comprises a floating block, 2, a floating plate, 3, a sliding ring, 4, a sliding rail, 5, a guide plate, 6, a rotating shaft, 7, a first bearing, 8, a driving bevel gear, 9, a driven bevel gear, 10, a first generator, 11, a water vane, 12, a rack, 13, a first gear, 14, a bracket, 15, a second bearing, 16, a second gear, 17, a rotating pipe, 18, a second generator, 19, a connecting shaft, 20, a clamping plate, 21, a filter screen, 22, a convex plate, 23, a fixed pipe, 24, a spring, 25, a flat plate, 26, a moving rod, 27, a moving block, 28 rollers and 29, wherein the floating block is arranged on the floating block, the movable plate is arranged.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1-2, a high-efficiency dam hydroelectric device for an electric power system comprises a floating block 1, a floating plate 2, a power generation mechanism, a flow guide mechanism, two sliding rings 3 and two sliding rails 4, wherein the two sliding rings 3 are respectively fixed on two sides of the floating block 1, the floating plate 2 is fixed below the floating block 1, the flow guide mechanism is arranged below the floating plate 2, the power generation mechanism is arranged on one side of the floating block 1, the sliding rings 3 are in one-to-one correspondence with the sliding rails 4, and the sliding rails 4 are in an L shape, and the sliding rings 3 are sleeved on the vertical parts of the sliding rails 4;

among this dykes and dams hydroelectric generation device, the horizontal position of slide bar is fixed on the dykes and dams, so sliding ring 3 can slide along the vertical position of slide bar, kicking block 1 and kickboard 2 float on the surface of water, there is rivers to dykes and dams impact the in-process that flows, rivers are used in the water conservancy diversion mechanism, carry out hydroelectric generation through the water conservancy diversion mechanism, flow along with rivers, the surface of water rises or falls, make kicking block 1 and kickboard 2 carry out the lifting movement, and then carry out hydroelectric generation through the ascending and descending movement of the usable kicking block 1 vertical side of power generation mechanism, therefore, the generated energy of equipment is improved, high-efficient electricity generation has been realized, thereby the practicality of equipment is improved.

As shown in fig. 3, the diversion mechanism comprises four diversion plates 5 and three hydroelectric components, the diversion plates 5 are fixed below the floating plate 2, each hydroelectric component is sequentially arranged between two adjacent diversion plates 5, the four diversion plates 5 are separated by two diversion plates 5 which are parallel to each other, the included angle between each two adjacent diversion plates 5 is equal, the hydroelectric component comprises a rotating shaft 6, a first bearing 7, a driving bevel gear 8, a driven bevel gear 9, a first generator 10 and a plurality of water blades 11, the water blades 11 are circumferentially and uniformly distributed at one end of the rotating shaft 6, the driving bevel gear 8 is fixed at the other end of the rotating shaft 6, the first bearing 7 is fixed below the floating plate 2, the first bearing 7 is sleeved on the rotating shaft 6, the driving bevel gear 8 is meshed with the driven bevel gear 9, the first generator 10 is fixed in the floating block 1, the input shaft of the first generator 10 passes through the floating block 1 and the floating plate 2 and is fixedly connected with the driven bevel gear 9, the rotation directions of the water blades 11 in the two adjacent hydroelectric components are opposite;

in the flow guide mechanism, three water flow channels are formed by four guide plates 5, three water and electricity assemblies are sequentially arranged in the three water flow channels, and because the four guide plates 5 are distributed in a mode that two adjacent guide plates 5 form a fixed included angle, one end opening of two channels close to a dam is larger than the other end opening, and one end opening of the other channel close to the dam is smaller than the other end opening, or one end opening of two channels close to the dam is smaller than the other end opening, and one end opening of the other channel close to the dam is larger than the other end opening, when water flows towards the dam in an impact mode, the water flows back after flowing from the channel far from the dam with the larger opening at one end and impacting on the dam, and returns from the other channel close to the dam with the larger opening at one end, and in the flow process of the water flow, the water vanes 11 are driven to rotate, so that the, the pivot 6 drives drive bevel gear 8 rotatory for driven bevel gear 9 takes place to rotate, and then carries out the acting to first generator 10, so, through the flow of water conservancy diversion mechanism guide rivers in the horizontal direction, carries out hydroelectric generation by three water and electricity subassembly through being close to the rivers that flow and return the flow to dykes and dams, has improved the generated energy.

As shown in fig. 1-2, the power generation mechanism includes a rack 12, a first gear 13, a bracket 14 and two power generation assemblies, the rack 12 is located on one side of the floating block 1, the first gear 13 is engaged with the rack 12, the bracket 14 is U-shaped, two ends of the bracket 14 are fixedly connected with the floating block 1, the first gear 13 is sleeved at the center of the bracket 14, the two power generation assemblies are arranged on one side of the first gear 13 away from the rack 12 from top to bottom, the power generation assemblies include a second bearing 15, a second gear 16, a rotating pipe 17, a second power generator 18 and a connecting shaft 19, the second bearing 15 and the second power generator 18 are both fixed on the floating block 1, the second bearing 15 is connected with one side of the second gear 16, the rotating pipe 17 is fixed on the other side of the second gear 16, a connecting unit is arranged in the rotating pipe 17, the connecting unit is connected with the second power generator 18 through the connecting shaft 19, the second gear 16 meshes with the first gear 13, and the two second gears 16 mesh with each other.

Because rivers impact dykes and dams for the height of water level changes constantly, and then drive kicking block 1 and kickboard 2 and carry out the lift displacement, in power generation mechanism, the position of rack 12 is fixed on the dykes and dams, when kicking block 1 and kickboard 2 carry out the lift displacement, drive support 14 lift displacement, make first gear 13 lift displacement, because first gear 13 and rack 12 meshing, make first gear 13 rotate, and then drive two second gears 16 rotatory under the supporting action of second bearing 15, second gear 16 drives the commentaries on classics pipe 17 and rotates, act on connecting axle 19 through the coupling unit, make connecting axle 19 rotate according to fixed direction, do work to second generator 18, so, through the change of water level height, do work to second generator 18, thereby enlarge the generated energy of equipment, the practicality that has improved equipment.

Preferably, in order to avoid the sliding of the first gear 13, clamping plates 20 are arranged on both sides of the first gear 13, and the clamping plates 20 are fixed on the bracket 14. The position of the first gear 13 on the bracket 14 is limited by the two fixed position clamping plates 20 on the bracket 14, the first gear 13 is prevented from sliding on the bracket 14, and the meshed relation between the first gear 13 and the rack 12 is ensured.

Preferably, in order to prevent aquatic weeds from winding around the rotating shaft 6 and the water blades 11, a filter screen 21 is arranged on one side of the guide plate 5 far away from the rack 12. The filter screen 21 is used for preventing the water tank in the water from winding on the rotating shaft 6 and the water blades 11, so that the rotating speed of the water blades 11 and the rotating shaft 6 is reduced, and the power generation capacity is further reduced.

Preferably, in order to facilitate the impurities to be separated from the filter screen 21, the horizontal cross section of the filter screen 21 is circular arc-shaped, and the center of the circular arc-shaped cross section of the filter screen 21 is located on the side of the filter screen 21 close to the rack 12. The filter screen 21 is convenient for water flow to flow towards the dam, and impurities in water can be driven to lean against the filter screen 21 and can be separated from the filter screen 21 from two sides of the filter screen 21 along the circular arc-shaped filter screen 21.

Preferably, in order to prevent the slip ring 3 from being separated from the slide rail 4, the bottom end of the vertical part of the slide rail 4 is provided with a convex plate 22. The sliding range of the sliding ring 3 on the sliding rail 4 is limited by the convex plate 22, and the sliding ring 3 is prevented from being separated from the sliding rail 4.

As shown in fig. 4, the connecting unit includes a fixed pipe 23, a spring 24, a flat plate 25, a moving rod 26, a moving block 27 and a plurality of intercepting units, the intercepting units are uniformly distributed on the inner wall of the connecting pipe in the circumferential direction, the fixed pipe 23 is fixed on the connecting shaft 19, the flat plate 25 and the spring 24 are both located on the inner side of the connecting pipe, the flat plate 25 is connected with the connecting shaft 19 through the spring 24, the spring 24 is in a compressed state, two ends of the moving rod 26 are respectively and fixedly connected with the moving block 27 and the flat plate 25, the vertical cross section of the moving block 27 is in the shape of a right triangle, and one right-angle side of the right triangle cross section of the moving block 27 is fixedly connected with.

In the two power generation assemblies, the two second gears 16 are meshed with each other, so that the rotation directions of the two second gears 16 are opposite, when the two gears drive the rotating pipes to rotate, the intercepting units on the inner wall of the rotating pipe 17 are sequentially contacted with the moving block 27, and because the rotation directions of the two rotating pipes 17 are opposite, the intercepting units on one rotating pipe 17 in the two rotating pipes 17 act on the inclined edge of the moving block 27, because the moving block 27 is connected with the flat plate 25 through the moving rod 26, the flat plate 25 can displace through the spring 24, so that the spring 24 is compressed at the moment, the moving block 27 moves towards the connecting shaft 19 and is separated from the intercepting units, the connecting shaft 19 does not rotate, and in the other power generation assembly, the intercepting units act on the right-angle edge of the moving block 27 to drive the moving block 27 to rotate, so that the moving block 27 acts on the flat plate 25 through the moving rod 26, and then drive connecting axle 19 and rotate, and then do work to the second generator 18 that this electricity generation subassembly corresponds, so, through the lift removal of kicking block 1, can realize that there is connecting axle 19 in the electricity generation subassembly to do work to second generator 18 steadily according to fixed reverse rotation all the time, improve equipment generated energy.

Preferably, in order to facilitate the wear of the mobile mass 27, said intercepting means comprise rollers 28. By contacting roller 28 with moving block 27, roller 28 may roll, reducing wear experienced by moving block 27.

Preferably, in order to realize the synchronous rotation of the connecting shaft 19 and the moving rod 26, a fixing ring 29 is arranged in the fixing tube 23, the fixing ring 29 is fixed on the inner wall of the fixing tube 23, and the fixing ring 29 is sleeved on the moving rod 26. The direction of movement of the mobile bar 26 is fixed by means of a fixed ring 29 and when the interception unit rotates the mobile bar 26 by means of the mobile block 27, the mobile bar 26 acts on the fixed ring 29, so that the fixed ring 29 rotates the connection shaft 19 by means of the fixed tube 23 in synchronism with the mobile bar 26 and the mobile block 27.

Preferably, the diameter of the first gear 13 is larger than the diameter of the second gear 16 in order to ensure the rotation speed of the connecting shaft 19. Since the diameter of the first gear 13 is larger than that of the second gear 16, the rotation speed of the second gear 16 is made larger than that of the first gear 13, which facilitates to increase the power generation amount of the second generator 18.

Preferably, the corrosion resistance of the glass is utilized, and in order to enhance the corrosion resistance of the deflector 5, the deflector 5 is made of glass.

Among this dykes and dams hydroelectric generation device, form three passageway through four guide plates 5, be convenient for flow to dykes and dams impact is close to dykes and dams flow the back, return again, the water and electricity subassembly in the three passageway of accessible, carry out hydroelectric generation, moreover, utilize the lift of liquid level to realize the automatic rising of kicking block 1, make first gear 13 rotate, and then drive the second gear 16 rotation in two electricity generation subassemblies, make two electricity generation subassemblies through the linkage unit, it is rotatory according to specific the turning to have a connecting axle 19 in the electricity generation subassembly all the time, do work to second generator 18, the hydroelectric power generation capacity has further been increased, the practicality of equipment has been improved.

Compared with the prior art, this a high-efficient type dykes and dams hydroelectric generation device for electric power system passes through water conservancy diversion mechanism guide rivers in the flow of horizontal direction to utilize the rivers of different flow directions to carry out hydroelectric generation, moreover, can carry out extra electricity generation at the kicking block 1 along with liquid level lift removal in-process through power generation mechanism, increase the power supply volume of equipment, thereby improved the practicality of equipment.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.