Impulse turbine hydraulic control multiinjector device
Technical field
The utility model relates to a kind of impulse turbine hydraulic control multiinjector device.
Background technique
Impulse turbine is to belong to the high head unit, comes exerting oneself of regulating and controlling hydraulic generator unit by nozzle, and is long to the diversion pressure steel tube of high head unit, the rated speed height of water turbine.For guaranteeing safe operation, to adopt multiinjector on the one hand, adjusting jet diameter size, the water wheels rotating speed is quickened, unit requires nozzle to close and wants fast when removal of load on the other hand, overrun in order to avoid produce unit, want slow, destroy diversion pressure steel tube to avoid producing water hammer but diversion pressure steel tube requires nozzle to close again.People are for solving this contradiction, adopted the method for control nozzle and flow diverter, the method of control nozzle and flow diverter has the mechanical type lever of employing, cam etc. at present, earlier by flow diverter is very fast jet is departed from runner when removal of load, raise to prevent generating unit speed, the while is shut-off nozzle lentamente, so that not producing big hydraulic pressure, diversion pressure steel tube do not rise, but because the operation of mechanical lever, cammingly is complicated, easy break-down is so need to improve.
Summary of the invention
The purpose of this utility model promptly is to overcome the shortcoming of prior art, provide a kind of simple in structure, the impulse turbine hydraulic control multiinjector device that repair and maintenance adopts the microcomputer special governor to realize easily can satisfy the quality of power supply and regulate the requirement that guarantees in safety and steady ground.
The purpose of this utility model is achieved through the following technical solutions: impulse turbine hydraulic control multiinjector device, form by diversion steel pipe, flow diverter, microcomputer special governor, water outlet at diversion steel pipe is equipped with nozzle, flow diverter, the oil pipe connection mouth of nozzle and the oil pipe connection mouth of flow diverter,, be connected by the oil gear of oil pipe with the microcomputer special governor.
The left end of nozzle is a nozzle carrier, the right-hand member of nozzle is equipped with nozzle cover, be equipped with nozzle on the nozzle cover, the core of nozzle has the nozzle needle axle, and the inside left end of nozzle needle axle is the feedback tapered sleeve, and right-hand member is a nozzle needle, feedback tapered sleeve and nozzle needle link into an integrated entity, the feedback tapered sleeve cooperates with the nozzle needle feedback rod that is positioned on the nozzle carrier side, and nozzle needle cooperates with nozzle, the oil pipe connection mouth of the side of nozzle carrier, is connected with microcomputer special governor oil gear.
By top narration as can be seen, the utlity model has following advantage: the utility model is simple in structure, repair and maintenance is convenient, when removal of load, can change the water jet direction rapidly, be not flushed on the scoop-type turbine, while is shut-off nozzle lentamente, can not cause aqueduct hydraulic pressure superpressure, make it safety and steady ground and satisfy the quality of power supply and regulate the requirement that guarantees, establish solid foundation for high automation degree direction develops.
Description of drawings
Fig. 1: impulse turbine hydraulic control multiinjector apparatus structure schematic representation
Fig. 2: impulse turbine hydraulic control multiinjector and flow diverter structural representation
Wherein: 1, nozzle, 2, nozzle cover, 3, nozzle, 4, nozzle needle axle, 5, the feedback tapered sleeve, 6, nozzle needle, 7, nozzle needle feedback rod, 8, the oil pipe connection mouth, 9, the oil pipe connection mouth, 10, nozzle carrier, 11, flow diverter, 12, the oil pipe connection mouth, 13, oil pipe connection mouth, 14, servomotor, 15, the microcomputer special governor, 16, oil pipe, 17, diversion steel pipe
Embodiment
Below in conjunction with accompanying drawing model utility is further described: as shown in Figure 1, be equipped with nozzle 1, flow diverter 11 directly to Pelton wheel at the water outlet of diversion steel pipe 17.According to payload, drop into nozzle 1 and flow diverter 11 numbers arbitrarily by 1,2,4 modes, the oil pipe connection mouth 8,9 of nozzle 1 and the oil pipe connection mouth 12,13 of flow diverter 11 are connected with microcomputer special governor 15 oil gears by oil pipe 16.
Nozzle 1 and flow diverter 11 structural representations are as shown in Figure 2, left end at nozzle 1 is a nozzle carrier 10, in the middle of the nozzle carrier 10 is water intake, nozzle 1 right-hand member is equipped with nozzle cover 2, be equipped with nozzle 3 on the nozzle cover 2, the core of nozzle 1 has nozzle needle axle 4, the inside left end of nozzle needle axle 4 is feedback tapered sleeves 5, right-hand member is a nozzle needle 6, and feedback tapered sleeve 5 links into an integrated entity with nozzle needle 6, and feedback tapered sleeve 5 cooperates with the nozzle needle feedback rod 7 that is positioned on nozzle carrier 10 sides, when feedback tapered sleeve 5 moves, nozzle needle feedback rod 7 just moves up and down, and information transmission to microcomputer special governor 15, is controlled the oil pipe connection mouth 8 of nozzle carrier 10 sides, oil pressure in 9 the pipe, promptly control nozzle needle 6 mobile positions, nozzle needle 6 cooperates with nozzle 3, and control water outlet jet diameter size is until closing.Flow diverter 11 is fixed on nozzle carrier 10 and the nozzle cover 2, oil pipe connection mouth 12 on the flow diverter 11,13 are connected with microcomputer special governor 15 oil gears, the servomotor 14 of microcomputer special governor 15 control flow diverters 11, when proper functioning, servomotor 14 is in water jet diameter top all the time, does not interfere jet.The adjustment that impulse turbine is exerted oneself realizes by changing the water jet diameter, Flow-rate adjustment when nozzle needle 6 is responsible for normal the operation, when unit needs removal of load, if nozzle needle 6 is closed diversion steel pipe 17 internal pressures are sharply increased, produce water hammer, destroy steel pipe, if nozzle needle 6 is slowly closed, to cause the transient state speed of unit to rise, and produce unit and overrun.Therefore the utility model is when needing removal of load, and microcomputer special governor 15 oil gears are pressed corresponding oil pipe connection mouth fuel feeding.At first, make the servomotor 14 of flow diverter 11 change the water jet direction rapidly, close nozzle needle 6 more slowly simultaneously, make it safety and steady ground and satisfy the quality of power supply and regulate the requirement that guarantees.
Pressing such scheme implements, for prolonging the unit maintenance phase, strengthen the reliability of nozzle, therefore, do not adopt spring in the nozzle 1, to be stabilized in a certain aperture motionless for nozzle needle 6 when unit moved under the situation of steady load, because microcomputer special governor 15 main control valves lap up and down make maintenance certain pressure in the nozzle needle operating cavity just, its size of the power of closing that is produced by this pressure just equates with the water active force that nozzle needle 6 heads trend towards opening, so nozzle needle 6 can be stabilized on the equilibrium position that this and external load adapt, and satisfies the quality of power supply.