CN102384005A

CN102384005A - Secondary jet impulse water turbine

Info

Publication number: CN102384005A
Application number: CN2011101281189A
Authority: CN
Inventors: 李光天; 李强
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-17
Filing date: 2011-05-17
Publication date: 2012-03-21

Abstract

The invention discloses a secondary jet impulse water turbine. The water turbine is characterized in that an impeller is welded by a multilevel cymbiform blade and disc-shaped protecting sheets at two sides and a rotating wheel drawing group, and the rotating is internally connected with a combining cover type wheel shell through a ball bearing; the wheel shell is composed of a dish lower cover and a basin upper cover, the lower cover is utilized as a horizontal installed engine base for a water turbine and connected with a foundation bolt of reinforced concrete foundation in a fastening mode, thereby ensuring the operative stability of the water turbine; a two-stage continuous jet impactive manner is adopted for a power water source to drive the impeller to rotate to do work so as to drive a generator to operate to generate electricity; the power water source entering the water turbine pushes the impeller to rotate and processes along with the cymbiform blade and impeller, and enters into a drained area of the water turbine when the impeller rotates at 180-190 degrees; and dynamic water flow rushes and enters into a drain pipe of the water turbine along a discharge opening under the action of motion inertance and centrifugal force, and flows a water storage tank under the leading of the outer drain pipe for a water pump in the water storage tank to extract and then the extract water enters a water supply tower for reuse. The purpose of the water turbine provided by the invention is as follows: overcoming the defects of large vibration and the like of an existing spiral case type water turbine, and trying to excavate the work potential energy of the power water source further so as to reform the mode that the shaft flow type or mixed flow type is taken as a leading power water current to do work in the existing spiral water turbine.

Description

The two-stage injection impulse turbine

Affiliated technical field:

The present invention relates to a kind of power equipment that is used to drive generator set running generating in the hydro-electric power generating equipment.

Background technique:

China introduced external pumped-storage power generation technology and equipment since 2003, further to widen hydroelectric application channels.In the existing pumped-storage power generation pattern, most " scroll casing type " water turbine that adopt of employed water turbine use the running generating of the waterpower acting promotion water turbine and the generator set of axial flow or mixed-flow.

Show according to interrelated data: the comparatively outstanding shortcoming of spiral-cased water turbine is: in the water turbine operation process, exist vibration; Sometimes owing to produce resonance by forced-stopping machine, analyze its reason and possibly be because the movement rhythm when having disturbed the power current in water turbine, to do work such as " pressurize " of partial installation (adopting the pre-buried mode of spiral case) and snakelike draft tube.

Summary of the invention:

The present invention's purpose is: for the power current do work in water turbine unimpeded runner is provided; Produce defectives such as vibration to overcome existing " scroll casing type " water turbine; And attempt further to excavate the acting potential at power water source, to reform the pattern of the power current acting of taking as the leading factor with axial flow or mixed-flow in the existing spiral-cased water turbine.

The present invention takes following method to reach above-mentioned target:

The first: take the impeller of water turbine to do whole the connection and the mode of installing, and adopt the smooth cover-closing type hub of inner chamber to overcome the existing shortcoming of existing spiral-cased water turbine with hub.

It two is: adopt ship (bow) shape blade structure to combine with the mode that the two-stage injection mouth is set; Through INSERTTYPE water inlet interface block introducing power water source is set ship (bow) shape blade is done the mode that two-stage injection is impacted on water turbine, to excavate the potential of power water source acting fully.

Effect of the present invention is: whole connect with the mode of installing and hub inwall smooth the combination

turbine impeller structural feature and the water turbine result of sluicing fast, to the impact force of hub water turbine to be turned round steady to dissolve the power water source.Pattern has also fully been excavated the acting potential of power current because the waterpower of two-stage injection impact type is done work in addition, thereby can improve the acting ability of water turbine.

Description of drawings:

Accompanying drawing 1: be two-stage injection impulse turbine waterpower fundamental diagram.

Accompanying drawing 2: be that the wheel shell structure of water turbine when doing level and installing always schemed.

Among Fig. 1: 1, intake pipe, 2, the water inlet interface block, 3, the water-stop ring, 4, ship (bow) type blade, 5, the hub loam cake, 6, tap hole, 7, guide plate, 8, waste pipe, 9, outlet pipe.

Among Fig. 2: 10, hub lower cover, 11, the water-stop ring, 12, ball bearing, 13, impeller shaft, 14, spacer, 15, lower side panel, 16, stone bolt, 17, WHEEL BOLTS, 18, epipleural, 19, the water-stop ring, 20, ball bearing, 21, the hub loam cake.

Embodiment:

The power water source forms columnar water from intake pipe (1) through water inlet interface block (2) and flows into the water turbine inner chamber, and ship shape blade (4) [like arrow indication among the figure] is carried out first order jet impact, promotes the impeller rotation.The power water source is meeting with preset two-stage injection mouth (6) [tap hole] during preshoot along the blade face; Wherein a part of current pour in the tap hole; Another part current then continue to dash forward and pour the terminal of ship shape blade, under the guiding of guide plate (7) toward refluxing and, converging with the current that got into by " importing " tap hole [being two-stage injection mouth (6)]; Spray the formation second level; The previous stage blade is impacted, spray with two-stage injection by one-level the continuous injection that the ship shape blade is produced is impacted, promote the rotation (press shown in " impeller rotation direction " arrow that Fig. 1 indicates) of impeller and drive generator operation and generate electricity.

The power water source is from getting into the water turbine inner chamber and ship shape blade (4) jet impact being begun; When promotion blade Rotate 180～190 are spent; Promptly [discharge opening that part Fig. 1 (9) indicates is discharged from the water turbine discharge opening under motional inertia and action of centrifugal force at the water source of finishing merit; Get into external waste pipe [part among Fig. 1 (8)] and flow into water reservoir, in order to being located at the suction pump extraction in the water reservoir and sending into the water supply tower, to get into next waterpower cyclic process.

Claims

1. two-stage injection impulse turbine; Adopt multistage ship (bow) shape blade to become impeller with rotating shaft and two side guard plate assembly weldings; Make whole connect with the cover-closing type hub through ball journal by impeller shaft; Do level with dish-shaped lower cover as support and install, the INSERTTYPE water inlet interface block that water turbine is installed through the hub loam cake is connected with the water supply end at power water source, makes the power water source do jet-type with the mode of spraying current to ship (bow) the shape blade surface of water turbine and impacts; Drive generator set running generating to promote the impeller rotation; It is characterized in that: the cover-closing type hub be installed in water inlet interface block and the outlet pipe on the hub, become impeller by multistage ship (bow) shape blade with rotating shaft and biside plate assembly welding, two jetburners are arranged to ship (bow) shape blade concave surface enforcement two-stage injection.

2. multistage ship according to claim 1 (bow) shape blade is characterized in that: on every grade of ship (bow) shape blade, all have as doing the tap hole that usefulness is sprayed in the second level, every grade blade is done assembly welding with the guide plate of a special shape with the convex surface of rotating shaft and adjacent First class ship (bow) shape blade by an end of rotating shaft and is connected.

3. two jetburners according to claim 1 is characterized in that: first jetburner is mounted in the INSERTTYPE water inlet interface block of water turbine loam cake; [piece number in the accompanying drawing 1 (2)]; Second jetburner is the tap hole of in each ship (bow) shape blade, leaving [shown in the piece number in the accompanying drawing 1 (6)], as doing second level jetburner.