CN101654909A - Circulating water reinforced power generation - Google Patents

Abstract

The invention relate to circulating water reinforced power generation, which is carried out by utilizing circulating water. The area of a water outlet is reduced and the flow is controlled and the impact force of water is increased through a conical pipeline; and the power generation is carried out in a way that a water inlet is left at the bottom part of an upper circulatory pool to reduce gasification and increase pressure and force. When a generator set with the electric power of 21, 000 kW/h is built, a rectangular circulatory pool with the capability of 45, 000 cubic meters needs to be built, a traverse with the depth of 4 meters and the width of 5 meters is dug at one side of the pool, and 23 centrifugal pumps (with 5 centrifugal pumps for standby) are installed, wherein the power of each centrifugal pump is 780 kW/h, the pump lift is 71 meters, the flow capability is 4, 320 m<3>/h, and the needed flow capability of each centrifugal pump is 21.6 m<3>/s. One upper circulatory pool placed opposite to a water pump and at a position 15 meters above the ground is then built, wherein the length inside diameter is 150 meters, the width inside diameter is 20 meters, the height is 50meters, and the capability is 150, 000 cubic meters. The water for operating a working pump is transported into the upper circulatory pool. One conical pipeline with the water inlet diameter of 5 meters and the water outlet diameter of 0.8896 meters is left at the bottom part of the upper circulatory pool. A set of control valves is installed above the water outlet of the conical pipeline, and then the water outlet of the conical pipeline is directly connected with an inlet of a hydraulic turbine. The control valve on the conical pipeline is firstly closed, and the control valve is then opened after the upper circulatory pool is filled through pumping to achieve the optimum working condition of the hydraulic turbine and drive the generator set to normally operate.

Description

Circulating water reinforced power generation

Circulating water reinforced power generation utilizes recirculated water supercharging, reinforcement propulsion power generating, and its appearance has the prospect that replaces thermoelectricity.Be that new technology, new invention, utilization rate height, applicability are strong, good in economic efficiency, not limited by the region, the innovation item of preserving the ecological environment.

Circulating water reinforced power generation unit when building three unit 2.1 ten thousand KW/ need dig one long 150 meters, wide 60 meters, dark 5 meters, the rectangle reservoir that total capacity is 45000 cubic metres.And in the pond one side is dug one dark 4 meters, wide 5 meters, long 150 meters vestibule.Settle water pumper, unit during unit generated output 2.1 ten thousand KW/ needs 23 centrifugal pumps (wherein 5 relatives of Taiwan compatriots living on the Mainland are in standby) centrifugal pump model: 24sh-9 is installed, when platform power is 780KW/, and 71 meters of lifts, flow is 4320m ³/ time.It is one of sh series centrifugal pump that manufactures and designs according to national standard; Manufacturer is a Co., Ltd of Shijiazhuang pump industry group, and the characteristics of this sh series single-stage double-suction centrifugal pump maximum are: performance range is wide, efficient is high, reliable, long service life, and structure is tightly played, and floor space is little, has good economical operation characteristic.Unit generating set flow needs 77760m ³3600 seconds=21.6m of/time ÷ ³/ second.

On following circulatory pool opposite, build a rectangle cocycle pond again, 15 meters above ground level, 150 meters of long internal diameters, 20 meters of wide internal diameters, high 50 meters, capacity is 150000 cubic metres.And above one end of cocycle pond 2 meters down, a cover water level alarm is installed.The water pump in the operation work, the water of taking out is input in the cocycle pond.In 30 meters in pond central authorities, staying 5 meters of conical pipeline water inlet diameters to conical pipeline delivery port diameter is 0.8896 meter from cocycle pond bottom one end.One cover control valve is installed above the exit of conical pipeline, and then, the conical pipeline delivery port directly connects hydraulic turbine import department.Earlier control valve on the conical pipeline is closed, the cocycle pond take out full after, opening controlling valve reaches hydraulic turbine optimum operating condition again, drives generating set, normal operation.

The principle of 1, supercharging, reinforcement:

The particularity that it is arranged because of water, did such test, on same height water tower, draw an outlet pipe, when this root water pipe pipeline equally thick from last water inlet to lower outlet, be placed on the more preceding obstructions of delivery port, the water slug that these obstructions are not flowed out from pipeline is moved, and is still as you were; Or the equally thick water pipe of this root, when its delivery port area 1/2 was dwindled in change, it just can dash these equal obstructions and turn over, is shifted; Or the equally thick water pipe of this root, when dwindling its delivery port area 2/3, it just can dash these equal obstructions and turn over, and a segment distance downstream is shifted.Done a test in addition again; 0.58 meter of a diameter, high 0.90 meter oil drum, with 25 same oil drums, with at the bottom of the oil drum and oil drum cap remove, connect welded together, 22.5 meters of height overalls.The oil drum that welding is good is placed on overhead on 2 meters framves, erects, and down 2 meters from oil drum top, stay a delivery port, draw sewer pipe.Stay a delivery port from the oil drum bottommost again, draw water pipe (diameter of upper water-out mouth and bottom delivery port and aqueduct is same).With suction pump oil drum is taken out full water, (two merging of the common brick of the usefulness of building a house are sidelong together, when opening water pipe, two bricks can be dashed and turn over, and combine as adding a brick again, just can not dash and turn over to put a little obstructions before last aqueduct delivery port; Put same two bricks before the aqueduct delivery port of bottom, very light just dashing turned over, and adds a brick again and can also add a brick totally 4 bricks again towards turning over, and still can dash and turn over).By such test, learn from practice: at same height, the water pressure of drawing from the top water level from the pressure ratio of water-bed portion drawing-off water is big.According under equal hydraulic pressure situation, flow ipe delivery port area is big more, and pressure is just more little; The delivery port area is more little, and pressure is just big more.Experimental results show that: with the pipeline of same thickness, when delivery port being dwindled half (1/2), the impact force of water will increase 3-4 doubly, and it is far away that head will rush at 4-5 rice forward; When delivery port being narrowed down to less than half (1/3), the impact force of water will increase 6-8 doubly, and it is far away that head will forwards rush at 8-10 rice.Can get thus: circulating water reinforced power generation is to utilize conical pipeline, dwindles the cross-sectional area of delivery port, and the control flow can increase the impact force of water, thereby just can play the effect of supercharging, reinforcement.

2, the measure of control water temperature:

Because of cycling use of water, suction pump ceaselessly draws water, and adds the temperature of weather nature, and therefore, the water that suction pump is taken out will produce certain water temperature.Relation according to water temperature and saturated pressure for vaporization; Water temperature is high more, and evaporation number is just big more, and the cavitation that vaporization will bring influence to the hydraulic turbine optimum operating condition operation of the hydraulic turbine, the exerting oneself and efficient of the reduction hydraulic turbine.Raise for fear of these water temperatures, the cavitation that vaporization brings is taked following circulatory pool, equates that in atmospheric pressure all the other all are closed, and simultaneously, stop enough ventilations except that leaving the required area of certain hydraulic turbine; Cold water heat radiation facility is installed in the cocycle pond, guaranteed that water temperature is at 10 ℃ below-15 ℃.

3, reduce silt, cavitation, vaporization:

Stay water inlet from cocycle pond bottom, what use because of recirculated water is motor-pumped well water, very clean, seal again with circulatory pool at present, suction pump is mounted in down again bottom the circulatory pool up more than two meters in the water, so, there is not silt in bottom, cocycle pond, can not cause the wearing and tearing of the hydraulic turbine.Water inlet is stayed in bottom, cocycle pond, and the degree of depth of water is darker, the suction pump water outlet can be contacted the gasification (bubble bubble) that moment produces with the pond water surface, under the pressure of atmosphere, crumbles and fall rapidly.Can reduce cavitation and gasification in flowing, guarantee the permanent optimum operating condition operation that keeps of water wheels function, the loss head minimum, efficient is utilized maximum.

4, water turbine position and supporting:

It is middle to 30 meters of pond central authorities that the hydraulic turbine is built down circulatory pool one end in, corresponding with the water inlet that the cocycle pond is stayed, and shortens the pipeline distance thereby reach, and reduces bend, saves cost, and discharging is convenient in the minimizing head loss, directly is discharged into down in the circulatory pool.

According to impulse turbine: Pelton wheel also claims tangential wheel, and the high speed free jet that comes out from nozzle is along runner tangent to periphery direction vertical impact wheel blade.Circulating water reinforced power generation is to utilize conical pipeline, dwindles the cross-sectional area of delivery port, increases the impact force of water.The application head of Pelton wheel is about 40-1700 rice, because of increasing the specific speed that nozzle number can improve tangential wheel, is in operation and can adjusts the nozzle number that puts into operation automatically according to the variation of load, keeps the high efficiency of operation.So, install the tangential wheel of vertical 6 nozzle impact types and be advisable.

5, save the economic worth of resource:

Circulating water reinforced power generation unit when building one 2.1 ten thousand KW/, when the recirculated water suction pump needs electricity consumption 14040KW/, when illumination of unit factory and supporting facility need 10KW/, during office lighting 10KW/, maintenance and during other power consumption 50KW/, required altogether power consumption are during less than 14200KW/.That is to say the electricity in the time of per hour just 6800KW/ can being generated electricity only, the electricity consumer of ensuring supply.Thermal power plant needs during by KW/ 400 gram raw coal send out kilowatt-hour, just can save 1958 tons in raw coal in one month, just can save 23496 tons in raw coal in 1 year.Raw coal per ton is delivered to producer by 500 yuan/T of present lowest price, and 1 year reduces with one in coal, and just energy saving fund is 1174.8 ten thousand yuan.Circulating water reinforced power generation, the construction period is short, small investment, the recovery fund is fast.

6, protection is ecological, energy-conserving and environment-protective:

Circulating water reinforced power generation is the regenerative resource of cleaning, meets sustainable development, improves the ecological environment and improves resource utilization.The in short supply of China's coal resource can be alleviated, the So that China produces with the coal generating can be reduced ₂, No ₂The problem of environmental pollution that is caused with greenhouse gas emission.Along with expanding economy, the progress of human society, people are more and more higher to environment requirement, and safety, environment healthy, that do not have to pollute become human common objective of making great efforts.Circulating water reinforced power generation has the advantages that not discharge pollutants with pernicious gas, thereby can not worsen air quality, helps improving the environment of human survival.

7, build the region and do not limit, save the soil:

Build the region and be not subjected to any restriction, not limited by any natural conditions, need not cut river, barrage, build a dam, can build Anywhere on national land, floor space is few, also can utilize the foot of the hill or hilly ground construction, and land occupation will be still less like this.

8, the theoretical utility data of circulating water reinforced power generation:

According to generating set power=9.81 * flow * head * generator efficient * hydraulic turbine is efficient

Highly=ground on the overhead 5m=60m of the 15m+ cocycle pond 50m-hydraulic turbine

Can get according to mechanical law of conservation: 1/2mV ²=mgh

Flow velocity so

The diameter of delivery port is 0.8896 meter, radius R=0.8896m ÷ 2=0.4448m so

Water flow according to pipe is:

R ∏ V=(0.4448m) ²* 3.14 * 34.29m/ second=21.6m ³/ second

Local head loss's coefficient according to the sudden contraction pipe; Do not have theoretical formula, have only empirical formula to get:

$=0.5(1-\frac{{\left(0.4448\right)}^2\mathrm{\&Pi;}}{5^2\mathrm{\&Pi;}})=0.4961$

And circulating water reinforced power generation, sudden contraction for fear of pipe causes the local losses head, just changes over conical pipeline, slowly dwindles the delivery port area naturally gradually, and dwindle the impact force several times that the delivery port area can increase by change, so loss head can be ignored.

Can reach 98% according to modern times generating effective rate of utilization, hydraulic turbine effective rate of utilization can reach 92%.

Theoretical utility data substitution generating set effective power can get:

9.81 during * 21.6 * 119.99 * 0.98 * 0.92=22923.5KW/

So during theoretical practical generating set effective power 22923.5KW/, during greater than actual power unit effective power 21000KW/.

Circulating water reinforced power generation is not run counter to law of conservation, but by changing the outlet pipe shape, dwindles the delivery port area, increases the impact force action of water.

Because of cycling use of water, the loss of water seldom, supplementing water only need bore a glance motor-pumped well, two cun submersible pumps are installed are got final product.

Claims (1)

1. Circulating water reinforced power generation is to utilize recirculated water, dwindles the delivery port area by change, the control flow, and the impact force of increase water plays the effect of reinforcement; Stay water inlet from bottom, cocycle pond, can play supercharging, reduce the effect of gasification.Its main designing technique feature: new invention, new technology, simple, the compact conformation of technological process, the utilization ratio height, floor space is few, energy-conserving and environment-protective.Construction is not limited by the region, and economic benefit is better.

   1, utilizes conical pipeline, dwindle the delivery port area, control flow, the impact force of increase water; 2, stay water inlet from bottom, cocycle pond, increase the degree of depth of water, play supercharging, reduce gasification; 3, remain to be developed big-and-middle-sized circulation boosting generator unit.