44results about How to "Improve water energy utilization" patented technology

The invention discloses a spiral hydraulic turbine comprising principal axis which is set vertically and has inner standing tank and outer standing tank fixed on with spiral water channel between them, carrick bitt on the lower part of the principal axis whose upper part is linked to dynamotor, water-collecting cavity is above the outer standing tank and there are several impulsing drop pit on the top of rotor of the spiral water channel; before water enters into the water channel, it firstly will pass through the impulsing drop pit for changing the kinetic energy of water into that of rotor, then it flows into the water channel, but the water gravity pushes the rotor to change the potential energy of water into the kinetic energy of rotor so that make the water turbine operate. The invention has simple structure and high water turbine utilization ratio.

The invention discloses a water power and thermal power generation real-time load adjusting method of a provincial grid under inflow change. For multiple states that inflow forecast is not accurate, or inflow of a drainage area upstream and an interval is changed, on the basis that the current operation working states of a thermal power generation load adjusting bandwidth and a water-power plant are fully considered, water power and thermal power generation output power is adjusted through a real-time load adjusting policy, so that a runoff forecast error is effectively reduced, and adverse influence to future time interval scheduling production of a cascade hydropower station by inflow change is effectively reduced. When the inflow is increased, on the premise that the cascade hydropower station satisfies tail water level constraint and water is not discarded, the compensation effect of the cascade hydropower station is fully exerted, and thermal power generation coal consumption is reduced; when the inflow is reduced, on the premise that the cascade hydropower station satisfies draining flow rate, grid load balance and tail water level constraint, load among cascades is reasonably distributed, the energy-accumulating effect of the cascade hydropower station is fully exerted, the thermal power generation output power is timely improved, a load balance requirement is met, and safe and stable operation of the grid is guaranteed.

The invention discloses a single-channel multi-level hydraulic power generation technology. A single headrace channel (1) is provided with two or more water turbines (2). The cross section area, corresponding to the headrace channel, of the downstream water turbines is n times of the cross section area, corresponding to the headrace channel, of the previous-level water turbines, wherein n is shown in the specification. The downstream water turbines are installed at the position corresponding to the foremost end of the headrace channel. A transition section between the part, corresponding to the headrace channel, of the previous-level water turbines and the part, corresponding to the headrace channel, of the downstream water turbines is a gradual expansion section (3) with the cross section area gradually increased. According to the implementation expectation of the technology, the hydraulic power generation efficiency can be improved by 90%-99%, the hydraulic power generation cost is reduced by 50%-60%, the proportion of hydraulic power generation in an energy structure is changed, and an outstanding function is achieved.

The invention discloses a movable demersal fish trapping and collection device and method. The device comprises a net cage frame, wherein multiple iron cables are fixedly mounted on the top of the net case frame, pulling ropes are connected to the iron cables, the top of each pulling rope is connected to a lifting device, the lifting device is fixedly mounted on a first water surface platform, a fish trapper is mounted in the net case frame and connected with a fish collection net case through a one-way fish passing channel, and a power device is connected with the fish trapper through a water pipe. The device is suitable for rivers with different flow rates and improves the fish collection effect.

The invention discloses a pollution-free hydropower power device. A left spindle and a right spindle of the pollution-free hydroelectric power device are rotationally mounted on the left side and the right side of a circular support of a base. Multiple left blades are distributed on the left spindle in the peripheral direction of the left spindle. Multiple right blades are distributed on the right spindle in the peripheral direction of the right spindle. The front end of a tail vane piece is movably mounted on a tapered support through a rotary shaft. A left guide piece and a right guide piece are correspondingly mounted at the left side end and the right side end of the circular support of the base and correspondingly located on the opposite outer sides of the left spindle and right spindle. An upper support is arranged above each of the left spindle and the right spindle. A lower support is arranged below each of the left spindle and the right spindle. The lower supports are located between the left spindle or the right spindle and the base. The lower end of the left spindle and the lower end of the right spindle are in linkage with the input end of a speed-increasing gearbox. The output end of the speed-increasing gearbox is in linkage with a transmission shaft of a generator. By the adoption of the pollution-free hydropower power device, the self-adaptive adjustment can be further made according to the water velocity, the water power utilization rate of the generator is further increased, and the power generation efficiency of the generator is further improved.