JP2009270557A - Hydraulic turbine output device increasing fluid flow speed in internal device of irrigation canal machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase hydraulic turbine energy with a guide plate increasing a specific gravity of fluid and doubling fluid speed. <P>SOLUTION: A fixed frame trestle 1, an upstream water stop plate 2 and a tilting guide plate 3 at a lower part are mounted in an irrigation canal. A hydraulic turbine is assembled from components of a turbine disk 6, a turbine shaft 7, turbine blades 8, a bearing 9 and a chain gear 11A. A turbine bearing stand frame 5 is mounted to the lower part of the trestle 1. A bearing stand 5 and the bearing 9 are assembled. A cradle for a transmission shaft 10 is mounted to the trestle. The chain gear 11B is assembled to the transmission shaft. A transmission chain 12 is wound around two chain gears for transmitting turbine shaft output to the transmission shaft. Water flows at a water depth ho, a ceiling from a passage inlet of the tilting guide plate 3 from the lower part of the upstream water stop plate 2 to a passage outlet has a passage length declining at 20 degree from the inlet, cross-sectional areas of the passage inlet and outlet decrease, flow speed is doubled, the turbine blades receive pressure of band-like fluid from the outlet, output of the turbine shaft is increased and the rotation speed is doubled. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention reduces the cross-sectional area of the water flow passage in a part of the irrigation channel with an inclined plate, compresses the flowing water flow, doubles the fluid flow velocity, applies pressure to the water turbine blades, and increases the turbine output.

  It was verified that the turbine output of the irrigation can not be used for the operating capacity of the machine installed in the same irrigation canal, but it was verified by using an underwater turbine. So we use electricity sales.

Means to solve the problem

The fixed frame pedestal (1) of the water wheel with a guide plate fixes the pedestal responsible for the entire load to the foundation of the water channel structure. 1 Assemble the upstream water stop plate (2) at the bottom of the upstream side waterway width of the gantry, and the intersection of the downstream measurement line from the lower upstream side and the fixed line from the bottom of the waterway is the downstream end of the guide inclined plate (3) is. The upper surface is composed of three inclined plates from the downstream end point to the passage entrance at 20 ° rise, the cross-sectional area of the downstream end point is reduced from the cross-sectional area of the passage inlet, the water flow is compressed, and the fluid and the flow velocity are doubled. Yes. Both sides of the width are surrounded by a guide both measuring plates (4).
1. Assemble the turbine wheel bearing frame (5) to which the turbine is attached at the lower part on the downstream side of the base. Assemble the water wheel disc (6) water wheel shaft (7) water wheel blade (8) bearing (9) chain gear (11A). 1 A water wheel with a guide plate that attaches a transmission shaft (10) to the upper part of the base, assembles a chain gear (11B), hangs the transmission chain (12), and transmits the output of the water wheel shaft.

The invention's effect

  The average flow velocity of the general opening channel is 1 to 3 m / S, the height H of the depth from the bottom of the channel, and the average velocity distribution velocity in the cross section of the channel is calculated to be 0.6H. Yes. The construction method of the underwater turbine is that the diameter of the turbine wheel D is 0.36B = D of the channel width B, the depth of sinking from the water surface is 0.25D = Hg, and the depth of sinking from the water surface of the channel is the same as 0.4H. In the interval from the average flow velocity line to the water surface, the pressurized flow velocity of the turbine blades decreases and the turbine shaft output also decreases. In response to the design of the water wheel with a guide plate, whether the partial flow rate is possible by attaching a device that doubles the flow rate to the guide plate while considering the standard of flow rate of 2-3 m / S with cement mortar on the waterway wall, We succeeded in the hydraulic model experiment outside the turbine. A fixed frame base is fixed to a part of the waterway structure, and the guide slope plate goes down to the end point by 20 ° downstream as a passage entrance ceiling at the lower part of the upstream side of the base, and reaches the end point. This is based on the height of 0.55ho = h1 from the bottom of the channel. From the bottom of the water channel to the cross-sectional area of the channel inlet, the cross-sectional area of the end point is reduced, the water flow is compressed, the fluid is increased and the flow velocity is doubled, pressure is transferred from the end point to the turbine blades, and the turbine is rotated to generate the maximum output of the turbine shaft. . As a result of the experiment, the control of the underwater turbine and the water turbine with a guide plate achieves a great result even when the water flow rate is the same as the turbine shaft output 1: 4.5 turbine rotation 1: 2 combined power 1: 9.4.

Best Mode for Practicing the Invention

  The underwater turbine that can be used in the current irrigation channel is to sink 0.25D into the water flow from the bottom of the water wheel disc (6) D, give the design flow velocity to the water wheel blade (8), and combine the turbine wheel output and rotation speed. Although it has power, even if the machine is installed in the waterway where the water wheel is installed, the operation power of the water wheel is insufficient and there is no use. A water wheel with a guide plate has a base foundation installed on the waterway and a fixed frame base (1) attached to the foundation. The lower surface of the upstream water stop plate (2) having a channel width B of 0.964B is placed upstream of the lower surface of the frame frame 1 and the lower surface of the guide inclined plate (3) is horizontally inclined 20 ° downward from the upstream side. A vertical line is drawn downstream at the position of 0.6D of the disk D (0.357B = D) of 6 in the measurement, and a height of 0.55H is marked from the bottom of the water channel with the center of the water turbine as the center, and the lower surface of the downstream of 3 It becomes the maximum flow velocity position in the channel cross section at the end of. In addition, 0.45H of water at the top of the end point is sent under the 20 ° inclined presser plate from the upstream, and the cross-sectional area of the channel is reduced, increasing the specific gravity and speed of the flow velocity. It will be released, but it will return normally in a short distance. This is the principle that the design flow rate of the guide plate is doubled. In order not to scatter the discharged water flow, the length of the guide side plates (4) is 0.6D of the 6 water turbine disk from the upstream side of 3 to the downstream end point, and from the downstream end point to the vertical axis of the water wheel axis. If you add 0.6D of 6 discs and 0.5D of 6 discs downstream from the center vertical line, the total length of 6D discs is 1.7D. The height is 4 heights from the bottom of the frame base 1 to the downstream end of 3 and 0.5D of 6 discs from the end of 3 to the bottom. The purpose is to increase the efficiency of the turbine. The installation of the water turbine is to measure the height from the lower surface on the upstream side of the fixed frame base to the downstream end horizontal line of 3 and from the end of 3 to the 0.6D of the 6 disk, the 7 vertical axis of the water turbine axis. Crosses the pull horizon. The 0.25d intersection of the 6 discs above the horizon is the horizontal line at the center of the 7 water wheel. The height from the bottom surface of the frame base 1 to the center of the water wheel shaft is measured on the both sides of the water wheel shaft 7 and the water wheel shaft frame 5 is attached to the water wheel shaft. From the downstream end horizon of 3 to the bottom of the turbine, the effluent water with speed from the end port at 0.25D of 6 discs pressurizes the 8 turbine blades, and the combined output of the turbine wheel output and rotation speed is announced.

  The theoretical formula of the underwater turbine used in the irrigation channel has been published in the magazine, but the turbine with a guide plate is under development, and the machine is installed in a part of the channel used in the design flow velocity in the channel flow. In order to increase the flow rate with the internal device and increase the efficiency of the machine, the experiment model is repeated in the water channel with the water channel width B = 0.5 m and the water depth ho = 0.35 m, and the result is completed. In order to create the theoretical formula, the laboratory of Frontier Giken Co., Ltd. was commissioned to complete the hydraulic model experiment work. However, the theoretical formula cannot be used without submitting a paper and accrediting it, and the provisional formula was completed by combining the answer of the theory of the underwater turbine and the experimental index. Operational observation, shaft output, and rotation speed were inspected and confirmed with a measuring instrument for experimental products in waterways.

The experimental product in the provisional formula of a water wheel with a guide plate, water channel height H = 1.85m, water channel width B = 3.86m, water depth ho = 1.555m, water flow cross section A = 5.087m ² i = 0.000333, roughness coefficient n = 0.015, average flow velocity υ = 1.1 m / S, flow rate Q = 6.588 m ³ / S.
Calculation by design of water turbine with guide plate [Ga 1] Shaft output: P = 5.250 · A · υ ³ (hg ÷ ho + 1.513) ⁹
A = 0.5143m ² hg = 0.699
P = 5.25 × 0,514 × 1.1 ³ (0.699 ÷ 1.555 + 1.513) ⁹ = 1551 (W) 1.551 (Kw)
[Ga 2] Number of revolutions: N = 2.626 · υ · (hg ÷ ho + 1.513) ³ ÷ D
N = 2.626 × 1.1 × (0.699 ÷ 1.555 + 1.513) 1.513) ³ ÷ 1.374 = 15.9 (times / min)
[Ga 3] Composite output: Pw = 1.551 × 15.9 = 24.66
[Experiment] A provisional official design / experimental product was produced for the provisional official experiment, and the water wheel shaft was measured with a measuring instrument during the experiment in the irrigation canal.
Shaft output: 1.701 (Kw) Number of revolutions: N = 18.3 (times / min)
Composite output: Pw = 1.701 × 18.3 = 31.12
Lower water turbine, calculation by the official design same as above [lower 1] shaft output: P = a · ωo · A · υ · (υ-u) · u / g
Turbine width is% of channel width: Br = 80% Output coefficient: a = 97.37%
Blade area: A = 1.064 (m ² ) Roughness coefficient u = 0.55
Gravity acceleration: g = 9.8
P = 0.973 x 1000 x 1.064 x 1.1 x (1.1-0.55) x 0.55 ÷ 9.8 = 35.15 (w)
Power conversion: QR = 35.15 ÷ 101.97 = 0.344 (Kw)
[Lower 2] Number of revolutions: N = 60 / (πD / υ) = 60 ÷ (π × 1.374 ÷ 0.55) = 7.64 (times / min)
[Lower 3] Synthesis power: Pw = 0.334 × 7.64 = 2.551
Guide turbine wheel output 1.551 rpm 15.9 combined output 24.660
Shaft turbine shaft output 0.344 Rotational speed 7.6 Composite output 2.614
Double ratio 4.508 2.1 9.487

  In line with the use of the irrigation canal, a water turbine with a designed flow rate was used, but the facility machinery in the canal uses electricity because of insufficient power. The water turbine with a guide plate doubles the design flow velocity inside the machine and becomes 10 times the combined power of the combined output of the underwater turbine, so that the power of the facility machine can be fully utilized. In addition, several units can be installed in the irrigation channel with an interval between the water turbines, and can also be used for a power generator. Currently, the Ministry of Economy, Trade and Industry has begun to consider whether to sell power generation to electric power companies in order to promote the introduction of small-scale hydroelectric power generation with output of 500 Kw to 1,000 Kw as part of global warming countermeasures. We are confident that a water turbine with a guide plate will be used for hydroelectric power generation that uses a waterway, in order to make use of the waterway for this hydroelectric power generation, and to utilize the field of the existing dam's foot.

A-A front sectional view, [description of symbols] It is the overall structure and mechanism diagram of a water wheel with a guide plate. The fixed frame base (1) is a frame base that supports the entire structure and a base that is fixed to the foundation of the channel structure. The upstream water stop plate (2) is a water stop plate that stops the upstream water flow in the water channel width and sends it to the passage. The guide slope (3) is a slope plate between the lower surface of the water stop plate and the bottom of the water channel from the upper surface of the passage entrance to the downstream end point of the 20 ° downward slope. The guide side plates (4) are both side plates surrounding the discharged water along the water channel wall. The turbine wheel support frame (5) is a structural frame having two combined loads of a turbine assembly load and a discharge pressure load applied to the turbine blade. Water wheel disc (6), water wheel shaft (7), water wheel blade (8), bearing (9) water wheel parts. Transmission shaft (10), chain gear 2 (11), transmission chain (12) water wheel shaft output transmission component. BB plane sectional view [Explanation of symbols] In the horizontal sectional view of the water turbine, both walls of the water channel, upstream water blocking plate (2), guide inclined plate (3), guide side plates (4), water wheel disc (6 ), Water wheel shaft (7), water wheel blade (8), bearing (9), chain gear (11). Plan view, [Explanation of symbols] Below is a plan view of the frame of the fixed frame base. Fixed frame frame (1), guide inclined plate (3) guide side plates (4) turbine wheel bearing frame (5), transmission shaft (10), chain gear (11), transmission chain structural components and hydraulic shaft output transmission parts. Upstream side view [Explanation of symbols] Understands the structure of the water flow path from the upstream side. Structural parts of fixed frame base (1), upstream water stop plate (2), guide inclined plate (3), water turbine. Downstream side view [Explanation of symbols] The structure of the turbine can be understood from the downstream side. Fixed frame base (1), guide side plates (4), water turbine bearing base frame (5), water wheel disc (6), water wheel shaft (7), water wheel blade (8), bearing (9), chain gear (11 ) ・ Conduction chain (12) ・ Structural parts and water wheel shaft output conduction parts.

Explanation of symbols

1. Fixed frame base Each structure and water turbine mechanism is composed of a fixed main frame of the machine on the upper foundation of the waterway structure.
2 Upstream water stop plate A structural water stop plate that guides the water flow from the upstream to the passage.
3 Guide-inclined upstream plate Inclined plate on the upper surface of the passage in the depth of water from the bottom of the waterway 4 Side plates on both sides of the channel
5 Turbine bearing stand frame A frame that suspends a water turbine from a fixed main frame.
6 Water wheel disc A rotating wheel of a water wheel.
7 Turbine shaft Transmission of the turbine shaft and turbine shaft output.
8 Turbine blades The rotating blades are subjected to double the flow velocity pressure and double the number of rotations.
9 Bearing A pedestal that fully handles the rotating structure of the turbine.
10 Conduction shaft A shaft that receives and transmits the generated output from the water wheel shaft.
11 Chain gears A and B Install A on the water wheel shaft and B on the transmission shaft.
12 Conduction chain A / B gears are chained to transmit the output.

Claims (2)

The fixed frame pedestal (1) of the water wheel with a guide plate fixes the pedestal responsible for the entire load to the foundation of the water channel structure. Assemble the upstream water stop plate (2) at the bottom of the pedestal upstream side channel width, and the intersection of the downstream measurement line from the lower upstream side and the measurement line from the bottom of the channel is the downstream end point of the guide inclined plate (3) is. The upper surface is composed of three inclined plates from the downstream end to the passage entrance at 20 °, the cross-sectional area of the downstream end point is reduced from the cross-sectional area of the passage entrance, the water flow is compressed, and the fluid and the flow velocity are doubled. Yes. Surround the passage with guide side plates (4) on both sides of the width. Assemble a turbine bearing stand frame (5) to attach a turbine to the lower part of the pedestal downstream of 1. Assemble the water wheel disc (6) water wheel shaft (7) water wheel blade (8) bearing (9) chain gear (11A). It is a water wheel with a guide plate that attaches a transmission shaft (10) to the top of 1 frame, assembles a chain gear (11B), hangs the transmission chain (12) and transmits the output of the water wheel shaft. Assemble the structural parts (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.) of the turbine with guide plate, and fix the fixed frame base to the partial structure of the water channel, upstream The water flow from is flowing at a depth from the bottom of the channel. The lower end of the upstream water stop plate changes to the passage entrance of the guide inclined plate, and the upper end surface is reduced by a 20 ° downward inclined angle short pipe, the end cross-sectional area is reduced from the inlet cross-sectional area, the water flow is compressed in this section, and the fluid specific gravity and flow velocity are reduced. The fluid that is divided and doubled and discharged in the enclosure of the guide side plates after the end point is in a belt-like state at the double speed from the end point, and the speed decreases with the moving time and returns to the depth of the water. It moves to the upper part of the enclosure that moved like a band. The installation position of the turbine produces a large change in the amount of generated turbine output, finds the interval from the end point and height of the guide inclined plate, the distance from the lowest position of the turbine diameter and the interval from the end point to the circumference of the turbine diameter, The water turbine with a guide plate according to claim 1, wherein a device for generating energy from the water wheel shaft by rotating the water wheel by pressurizing the fluid doubler to the water wheel blade is used together.

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