JP4665387B2 - Hydroelectric generator - Google Patents

Description

Detailed Description of the Invention

Technology to which the invention belongs

  The present invention is a water channel power generation device using the flow velocity of an open channel (18) in which the water surface is continuous and the water depth varies.

Ｔ１：水車軸▲３▼に発生するトルク（ｋｇ−ｍ）
Ｎ ：水車軸▲３▼の回転数（ｒｐｍ）
Ｐ ：発電容量（ｋｗ）
Ｔ２＝Ｗ１×ｔａｎ（θ３）×Ｌ２…………………………（２）
Ｗ１：水車重量（ｋｇ）
Ｔ２：水車重量によりＤ２（発電軸▲１３▼）発生するトルク
浮遊物▲２０▼が無い場合 θ３はＴ１＝Ｔ２となる角度でバランスする。
開水路▲１８▼に混入した浮遊物▲２０▼を水車下流に流下させる為には、水車の位置をＨだけ上昇させる必要がある。その時、水車軸▲３▼がＥ１まで上昇させる為に必要な浮遊物の流下力は（３）式で計算できる
Ｆ１＝Ｗ１×ｔａｎ（θ４）…………………………………（３）
Ｆ１：浮遊物▲２０▼の流下力（ｋｇ）
θ４：図−４の図（ロ）の∠Ｅ１、Ｄ２、Ｆ２
尚Ｆ１−Ｆ２線は垂直線である。The depth of the open channel (18) varies depending on the amount of flowing water in the open channel (18). In addition, suspended matter (20) is mixed in the middle of the open channel (18).
A prior art water channel generator apparatus is shown in FIG. In the prior art, a water wheel composed of a float (2) and a paddle (1) is floated on the surface of an open channel (18), and the turbine is rotated by the water flow in the channel even if the water depth in the open channel (18) varies. To rotate the generator {15}. The rotation of the water wheel shaft (3) is transmitted to the power generation shaft (13) through the sprocket-1 (6), the chain-1 (5), and the sprocket-4 (10). The power generation shaft (13) is supported by a bearing (14) installed on a gantry (16), and is coupled to a generator (15) by a joint (17). The water wheel shaft (3) is supported by the suspension rod (4) from the power generation shaft (13). The water wheel shaft (3) is installed in parallel with the power generation shaft (13) and is supported by a suspension rod (4).
When the water depth in the open channel (18) fluctuates, the water wheel shaft (3) rotates around the power generation shaft (13) due to the buoyancy of the float (2). Sprocket-1 (6) rotates the same as the water wheel shaft (3), and sprocket-4 (10) rotates the same as the power generation shaft (13). As a result, the rotation of the water wheel shaft (3) is transmitted to the generator (15). The mechanism in this case is shown in FIG.
4, D2 is the center of the power generation shaft (13), and D1 is the center of the water wheel shaft (3). E1 indicates a moving point when D1 rotates and moves the water turbine shaft (3) around the power generation shaft (13) and the water turbine rises by H.
At this time, the relationship of the formulas (1), (2), and (3) is established from FIG.

T1: Torque generated on the water wheel shaft (3) (kg-m)
N: Number of revolutions of the water wheel shaft (3) (rpm)
P: Power generation capacity (kW)
T2 = W1 × tan (θ3) × L2 (2)
W1: Mill wheel weight (kg)
T2: Torque generated by D2 (power generation shaft (13)) due to the weight of the water turbine When there is no suspended matter (20) θ3 is balanced at an angle where T1 = T2.
In order to allow the suspended matter (20) mixed in the open channel (18) to flow downstream, it is necessary to raise the position of the turbine by H. At that time, the floating force required to raise the water wheel shaft (3) to E1 can be calculated by the equation (3). F1 = W1 × tan (θ4) ………………………………… (3)
F1: Flowing force of suspended material (20) (kg)
θ4: ∠E1, D2, F2 in FIG.
The F1-F2 line is a vertical line.

Problems to be solved by the invention

If suspended matter ▲ 20 ▼ enters the open channel ▲ 18 ▼, the turbine will not rotate up to H in the figure (b) of FIG. Stop. Therefore, the water flow resistance in the water turbine section increases, the water level on the open channel (18) rises, and inundation damage occurs.
The suspended matter (20) mixed in the open channel (18) needs to be removed and removed by installing a removal device. Accordingly, unmanned operation of the water channel power generator becomes difficult during rainy weather when it can be estimated that the suspended matter (20) is mixed. Therefore, there is a need for a water channel power generation device that does not hinder operation even if floating water (20) is included in the flowing water in the open channel (18) or the water depth in the open channel (18) varies. .

Means for solving the problem

  In the present invention, the weight of the water wheel composed of the float (2) and the paddle (1) is set on the lifting rod (12) with the weight (11), and the weight of the lifting rod (12) with the weight of the water wheel as the balance 11) Reduced by weight and made it possible to raise the water wheel with the flow of floating material (20). Even if floating material (20) is mixed in the water in the open channel (18), Even if the water level of 18 ▼ fluctuated, it was possible to generate electricity without stopping the rotation of the water turbine.

Embodiment of the Invention

Next, an embodiment of the present invention will be described.
FIG. 2 shows an embodiment of the present invention when the float (2) is cylindrical.
The water turbine in which the paddle (1) is installed outside the circular float (2) rotates around the water wheel shaft (3) by the flow velocity of the water flowing in the open channel (18). The water wheel shaft (3) is installed in parallel with the power generation shaft (13) and is supported by the suspension shaft (4) from the moving shaft (9). The moving shaft (3) is installed in parallel with the power generation shaft (13) and is supported by the lifting shaft (12) from the power generation shaft (9). Accordingly, the water turbine can follow the water level fluctuation in the open channel (18).
The rotation of the water wheel shaft (3) is sprocket-1 (6), chain-1 (5), sprocket-2 (7), sprocket-3 (8), chain-2 (19), sprocket-4 (10), Then, it is transmitted to the power generation shaft (13). Sprocket-1 (6) rotates with the water wheel shaft (3). Sprocket-2 (7) and sprocket-3 (8) rotate the same around the moving shaft (9). Sprocket-4 (10) rotates with the power generation shaft (13). The water wheel shaft (3) and the moving shaft (9) can be rotated around the power generation shaft (13) by means of a suspension rod (4) and a suspension rod (12). The power generation shaft (13) is supported by a bearing (14) installed on the gantry (16). The generator (15) is connected to the power generation shaft (13) by a joint (17). On one side of the lifting rod {12}, torque about the power generation shaft {13} is generated by the load of the moving shaft {9}. At this time, the lifting rod (12) is used as a balance, and a weight (11) is installed on the other side to generate torque in the opposite direction to reduce the weight of the water turbine.
The mechanism at this time is shown in FIG.
In FIG. 4 (A), B1 is the center of the water wheel shaft (3), and B2 is the center of the moving shaft (9).
Since C1 and C2 flow down suspended matter (20), when the turbine is raised by H, the turbine shaft (3) and the movable shaft (9) rotate around the power generation shaft (13), and B1 and B2 Indicates the moving point.
At this time, the relationship of equations (4) and (5) is established from FIG.
T3 = W2 × tan (θ1) × L1 (4)
W2: Water wheel weight reduced by weight (11) (kg)
T3: Torque generated in B2 (moving shaft (9)) due to the weight of the turbine wheel When there is no suspended matter (20) θ1 is balanced at an angle T1 = T3. At this time, the weight of the weight {circle over (11)} is determined so that T1 ≦ T3 can be generated even if the water turbine moves and θ1 fluctuates.
It is necessary to raise the position of the water turbine by H in order to allow the floating material (20) mixed in the open channel (18) to flow downstream. At that time, the flow force of the floating material (20) required to raise the center B1 of the water wheel shaft (3) to E1 can be calculated by the equation (5) F2 = W2 × tan (θ2). …………… (5)
F2: Flowing force of floating material (20) (kg)
θ2: ∠C1, C2, G3 in FIG.
Accordingly, the water wheel can be raised by H by the floating force {circle around (20)}. It is important to reduce F2 so that the suspended matter (20) flows out downstream of the turbine and the water flowing down the open channel (18) is not obstructed by the turbine.
The float (2) may be installed on both sides of the water wheel shaft (3). An embodiment in that case is shown in FIG.
As a means for transmitting the rotation of the water turbine shaft (3) to the power generation shaft (13), the chain-1 is omitted, the sprocket-1 and the sprocket-2 are used as gears, and the waterwheel shaft (3) is rotated by meshing the gears. It can also be transmitted to the movement axis (9). Further, a V-belt can be used instead of the chain-1.

The invention's effect

  By installing the weight (11) at one end of the lifting rod (12), the lifting load of the water turbine is reduced from W1 to W2. Further, since the water wheel is raised through the movement shaft (9), the suspension angle of the water wheel is reduced from θ4 to θ2. Accordingly, the flow force of the suspended matter (20) necessary for raising the water turbine is reduced from F1 to F2. For this reason, even if the floating material (20) flows into the open channel (18), the water wheel easily rises, so the water wheel does not stop due to the floating material (20), and the water level on the upstream side of the water wheel rises. Never do.

  A front view and a side view of a prior art example are shown.   A front view and a side view when there is no suspended matter (20) in the embodiment of the present invention are shown.   The front view and side view when a water turbine raises only H by the suspended | floating matter (20) in the Example of this invention are shown.   The mechanism of the present invention is shown in FIG.   It is an Example of the present invention, and shows a front view and a side view when there is no suspended matter (20) when the float (2) is installed on both sides of the water wheel shaft (3).

Explanation of symbols

(1) is a paddle, (2) is a float, (3) is a water wheel shaft, (4) is a suspension rod, (5) is a chain-1, (6) is a sprocket-1, and (7) is a sprocket-2 , (8) is sprocket-3. (9) is the moving shaft, (10) is the sprocket-4, (11) is the weight, (12) is the lifting rod, (13) is the generator shaft, (14) is the bearing, (15) is the generator, 16 is a frame, 17 is a joint, 18 is an open channel, 19 is a chain-2 and 20 is a floating object.

Claims (1)

It has a water wheel shaft (3) and a moving shaft (9) installed in parallel with the power generation shaft (13), and floats the water wheel to the surface with the float (2), and rotates the water wheel with the paddle (1) to In the rotating water channel power generator, the water wheel shaft (3) is supported by the suspension rod (4) from the moving shaft (9), and the movement shaft (9) is supported by the lifting rod (12) from the power generation shaft (13). The lifting rod (12) is a balance that rotates about the power generation shaft (13), and the weight (11) is installed on the lifting rod (12) on the opposite side of the moving shaft (9). Canal can be lifted by weight (11) weight

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