JPS5954778A - Cylindrical water wheel generation equipment - Google Patents

Abstract

PURPOSE:To simplify checking and repairing of a generator, by locating a cylindrical water wheel generation equipment of super low head and small capacity which is equipped with a dam tailrace and the like upstream of a weir for shielding an open grooved water line and between opening and closing gates provided upstream and downstream of the weir. CONSTITUTION:There are provided a concrete weir 2 partitioning a water line 1 on the way thereof, and a cylindrical water wheel generator unit 3 on an upsteam side of the weir 2 which unit 3 is comprised of a body 5 incorporating a generator connected through a main shaft to a water wheel runner 4, and an outer casing 7 surrounding the body 5 through a stay vane 6 and a guide vane 8. There are provided opening and closing gates 14 and 15 partitioning the water line 1 on an upstream and a downstream side of the unit 3 in the water line 1, respectively. Thus, upon checking and repairing of the unit 3, water in the water line between the gates 14 and 15 is suitably drained by operation of a drain pump 16. The unit 3 is mounted through a support leg 11 to a support base 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to ultra-low head, small capacity cylindrical water turbine power generating equipment that generates power using a dam spillway or irrigation canal, and in particular secures irrigation water for the downstream g4IJI of the waterway. A cylindrical water turbine that allows sufficient time for inspection and repair of the turbine generator by interrupting the discharge for only a short period of time when constant discharge is required for the purpose of inspection and repair. It provides power generation equipment.

Nowadays, there is a demand for saving energy resources.

The development of untapped hydropower energy is a major issue. Hydropower energy development points to meet these demands are targeted at locations with extremely low heads, such as existing dam spillways and irrigation canals. Cylindrical water turbine generators have traditionally been effective in generating hydroelectric power at this ultra-low head, and are now widely used. As is well known, the configuration of conventional cylindrical water turbine power generating equipment in J-cos is that a casing is made of concrete within a waterway, and the cylindrical water turbine generator is completely housed inside the concrete casing and installed in a fixed manner. Therefore, installing this power generation equipment not only requires a large amount of construction costs, but also requires inspection of the water turbine generator, and at 411, the waterway is closed with opening/closing gates installed at θ on the upstream and downstream sides of the water turbine generator. After draining the water between them, inspection, disassembly, and repair work must be carried out while the installation is fixed in the waterway, and the work efficiency is poor in a limited space and the work period is shortened. is also that long. In addition, dam spillways and other irrigation canals are generally required to discharge the amount of water necessary to ensure sufficient water at all times for purposes such as boiling water downstream of power generation equipment. From this point of view, in conventional cylindrical water turbine power generation equipment, interruption of water discharge during long periods of inspection and repair is unavoidable, leaving a major problem in securing water on the downstream side.

The present invention solves the above-mentioned problems and provides a cylindrical water turbine power generation facility that hardly causes any trouble in securing water to the downstream side even when the water turbine generator is inspected or repaired. A weir body that enables the effective use of canals and existing irrigation water for hydroelectric power generation, and is installed to cut off an open canal and has a through hole for a suction pipe below it, and the upstream side of the weir body. and a waterway opening/closing gate provided on the downstream side so as to be able to be shut off at will, a drainage pump capable of draining water from the waterway between the gates, and an opening between the waterway opening/closing gate on the upstream side and the weir body provided at the bottom of the waterway. a support base, a cylindrical water turbine generator unit placed on the support base facing the suction pipe through hole of the weir body and removably fixed; inspection of the water turbine generator unit; When repairing, close each waterway opening/closing gate, drain the water around the water turbine generator unit using a drainage pump as necessary, then disconnect the LC1 water single water room generator unit holder, and remove the water turbine generator unit. The gist of the system is to lift the unit, perform repairs and inspections on the turbine generator unit in this lifted state, and open the waterway gate to release water if necessary during this time.

The system of the present invention will be described in detail below with reference to the illustrated embodiments. First, the configuration of the power generation equipment according to the present invention is as follows.

That is, in FIGS. 1 to 3, reference numeral 1 indicates a waterway such as a dam spillway or an irrigation channel, and a weir body 2 made of concrete 1 is provided in the middle of the waterway 1 to partition the waterway. The upstream side of the weir body 2 in the waterway 1 is particularly an open waterway with an open top surface, and a cylindrical water turbine generator unit 3 is installed in this part. The water turbine generator unit 3 includes a main body 5 that houses a generator connected to a water turbine runner 4 via a main shaft, and an outer casing 7 that surrounds the outer periphery of the main body 5 and is connected to the main body 5 via a stay vane 6. It is composed of a guide vane 8 provided downstream of the stay vane 6 by bridging the main body 5 and the outer casing 7. The water generator unit 3 configured as described above can be raised and lowered as shown by arrow A by a lifting device (not shown) installed above the waterway 1 via a lifting stand JL9 provided on the upper surface of the outer gauging 7. It is configured. Furthermore, the naval power generator unit 3 is placed on a support base 10 installed on the bottom surface of the waterway 1 via its support legs 11, and a fixing port 12 is attached to this base 10.
Fixed by A suction pipe liner 13 connected to the outer casing 7 at the installation position of the water turbine generator unit 3 is inserted into the suction pipe through hole 2a formed in the weir body 2. The connecting flange with the suction pipe liner 13 is configured as, for example, a loose flange that does not leak water and can be easily connected and removed. On the upper surface, side, and downstream side of the water turbine generator unit 3 in the waterway 1, opening/closing gates (14 and 15) are installed to partition the waterway 1, respectively. The opening/closing gate 15 is arranged inside the weir body 2 in this case. Reference numeral 16 denotes a drainage pump that drains water in the waterway between the gates 14 and 15 as necessary. The figure shows the operating state of the water turbine generator 3. Water in the water channel 1 flows through the water turbine generator 3 as shown by arrow B and is discharged to the downstream side, and in this process, the water turbine runner 4 is rotationally driven to generate electricity.

Next, referring to FIG. 4, inspection and repair of the water turbine generator unit 3 will be explained. First, open and close the opening/closing gate 14 on the first stream side,
Next, the opening/closing gate 15 is detected.

Next, the water between the opening and closing gels 1-14 and 15 is drained using the drainage pump 16, and in that state, the support base 1o and the support legs 11
Port 12 and outer casing 7 fixed between
The connecting flange between the and the suction pipe liner 13 is released, and the water single-engine 'tif machine unit 3 is lifted above the waterway 1 by a lifting device. Inspections and repairs are carried out outside the waterway 1 in a sufficient work area. Also, is it necessary even when the water turbine generator unit 1-3 is suspended outside the waterway? You can also open and close the gate as required]・14.15 can be opened and discharged to the downstream side. In this case, the opening degree of the gate (14) is adjusted so that the required amount of water is released. Figure 4 shows this state. After inspection and repair are completed, the water turbine generator unit 3 is returned to the operating position. When installing it in the waterway 1, the horizontal generator unit 3 is suspended into the water channel 1 and placed on the support base 10 with the opening and closing gates 1-14 and 15 closed again and the water between both gates 14 and 15 drained. I set the identification to the game 1-14 again.
．． Open 15 and open reverse f14. In other words, as is clear from the above explanation, the period of interruption of water discharge to the downstream 1i11 divided by the point +λ of the water turbine generator unit 3 is not related to the repair period of the water turbine generator unit, and only takes a certain amount of time, It is possible to avoid interfering with water supply and maintenance.

As described above, according to the method of the present invention, inspection and repair of the cylindrical fisheries generator can be carried out at a distance of 1 u by hanging it outside the waterway with good working conditions, and during the period of inspection and repair, It will not stop water discharge into the waterway, and there will be no problem in securing water for hot springs on the downstream side. Therefore, the dam spillway or other irrigation canals, which have been undeveloped up to now, can be used for ultra-low head cylindrical water turbine power generation equipment, and the development of hydropower energy can be promoted.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a cylindrical water turbine power generation facility based on the present invention;
Figure 2 is a cross-sectional view of Figure 1, and Figure 3 is a cross-sectional view of Figure 1.
1-m sectional view, and FIG. 4 is a vertical sectional view showing an exploded state with respect to FIG. 1. 1: Open waterway, 2: Weir body %2a: Through hole for suction pipe, 3
: Cylindrical water turbine generator unit, 4: Water turbine runner% 5: Water turbine generator body, 7: Outer casing, 9: Lifting metal fittings,
1o: Support base, 11: Support legs, 14: Upstream opening/closing gate, 15: Downstream opening/closing gate % 16: Drain pump.

Claims (1)

[Scope of Claims] 1) A weir body which is provided to cut off an open waterway and has a through hole for a suction pipe below the weir body, and a waterway opening/closing gate provided on the upstream and downstream sides of the weir body so as to be able to freely shut off the waterway. ,
a drainage pump capable of draining water from the waterway between the gates; a support base provided at the bottom of the waterway between the upstream waterway opening/closing gate and the weir body; and a support base provided on the bottom of the waterway; A cylindrical water turbine power generation equipment comprising a cylindrical water turbine generator unit placed opposite to a suction pipe through hole and detachably fixed. ±2. The cylindrical water turbine generator according to claim 1, characterized in that a downstream waterway opening/closing gate is provided in the weir body to open and close the suction pipe through hole of the weir body. Cylindrical water turbine power generation equipment.