CN102734208A

CN102734208A - Wide-angle full-adjusting device for blade of mixed flow type water spraying propelling pump

Info

Publication number: CN102734208A
Application number: CN2011100871278A
Authority: CN
Inventors: 姚刚; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-08
Filing date: 2011-04-08
Publication date: 2012-10-17

Abstract

The invention provides a wide-angle full-adjusting device for a blade of a mixed flow type water spraying propelling pump, which belongs to the field of ship propulsion, is used for improving efficiency, reducing noises and vibration, improving anti-foam performance and changing a lubricating way, and creates a novel backward navigation manner of mixed flow pump propelling. The device is formed by two parts including a hydraulic adjusting device and an adjusting mechanism, wherein the hydraulic adjusting device is used for realizing left and right movement of an operation rod; and the adjusting mechanism is a space oblique-crossing rod system, and the control on a movement track of a low pair of a space sealed spherical face in the rod system is the key of normal work of the device. The adjusting mechanism is used for converting the leftward and rightward movement of the operation rod (1) into forward and backward rotation around the self axis of a pump blade (3), so that the wide-angle full adjustment of the mixed flow pump propelling is finished, the performance is improved, and backward navigation-stationed navigation-backward navigation are realized. A pump shaft (2) is connected with a propeller main engine to drive a rotor body (4) and the pump blade (3) to rotate so as to propel water to work. The mechanism adopts a self-lubricating bearing. The adjusting mechanism is arranged on the pump shaft, so that an adjusting force is set to be a system inner force and the force is only applied to an acting object, namely the water; and a mini-type motor serves as a power source of the adjusting force. The wide-angle full-adjusting device can realize the wide-angle full adjustment of single-grade pump propelling and double-grade pump propelling. The existing data and technical equipment can meet all theoretical calculation and actual manufacturing of the wide-angle full-adjusting device.

Description

The full controlling device of blade wide-angle of mixed-flow water jet propulsion pump

Technical field

The full controlling device of blade wide-angle of mixed-flow water jet propulsion pump belongs to the Ship Propeling field, in order to raise the efficiency, reduces noise and vibration, improves anti-bubble performance, changes lubricating system, and creates the mode of falling the boat that a kind of new mixed flow pump sprays.

Here so-called " raising the efficiency ", the efficient when specially referring to multi-operating mode, promptly the power curve high efficiency range is wide.

Here so-called " wide-angle is regulated entirely " is meant that the blade adjustments angle reaches β z=0-45 ° (seeing Fig. 1, Fig. 4)

Here so-called " noise reduction " is meant " essential calm type " that the structure characteristic of this invention is brought, order of magnitude ground noise reduction, rather than improved type noise reduction (like sound insulation).

Here so-called " improving anti-bubble performance " is meant that the anti-bubble performance that the structure characteristic of this invention is brought improves.

Here so-called " change lubricating system ", be meant that this invention changes that the oil sump of existing close machine is lubricated to be the selflubricating to point.

Here so-called " the new mode of falling the boat " is meant that main frame do not shut down, and under the situation about not commutating, the axis wide-angle is moving transfers around self for blade, i.e. " the blade wide-angle is regulated entirely " realized ship's navigation-stay boat-fall to navigate (seeing Fig. 4 a, b, c).

The present invention accomplishes under the function prerequisite, (not being more) Xian refining the most, brief on the structure;

Background technique

The history in existing 350 years of hydraulic jet propulsion, but to its performance improvement, and functions expanding, all having arrived very difficult stage, people have been used to most of energy to carry out the research of extraordinary advancing means.

To the adjusting of pump performance once or using three kinds of methods, 1 arranged) speed change regulates (variable-frequency motor is originated in this); 2) preceding stator is regulated; 3) blade angle is regulated entirely, and in these three kinds of modes, blade angle is adjusted to best entirely.

Three during the last ten years; Both at home and abroad in the process of seeking the rationally reliable full controlling mechanism of runner bucket; Various ways such as shift fork, worm and gear, nut screw mandrel, gear rack, cone gear, crank-connecting rod, cross joint axle, two rod end spherical joint bearings have been experienced; The servomotor that also is equipped with complicacy that wherein has, it is lubricated that they all are furnished with superfluous heavy oil sump.These forms, except that structure was very numerous and diverse, maximum deficiency was to realize that wide-angle regulates entirely.

Two indexs of the hydraulic characteristic of full regulation technology of mixed flow pump and pump become the significant index of a national large pump development level.Mixed flow pump pushes away, and by being paid attention to both at home and abroad also having employing, the employing mixed flow pump pushes away and do not add wide-angle and regulate entirely more, and then advantage falls sharply.Have only the outstanding mixed flow pump of hydraulic performance to push away, have wide-angle again simultaneously and regulate entirely, be only the highest goal that pump pushes away.

At present, wide-angle is regulated mixed flow pump entirely and is pushed away, still the ground for waiting to cultivate.

The mixed flow wide-angle transfers pump to push away with the axial flow wide-angle to transfer pump to push away performance, function ratio entirely entirely, visible table one

Table one mixed flow wide-angle transfers pump to push away with the axial flow wide-angle to transfer pump to push away performance, function ratio entirely entirely:

Summary of the invention

The present invention's so-called " device " comprises 1) fluid pressure governor, in order to the side-to-side movement (existing complete sets of products, this paper does not carefully state) that realizes operating stem; 2) controlling mechanism is a space oblique leverage, in order to realize the side-to-side movement of operating stem is changed into forward and reverse rotation of blade.

Content of the present invention is following 4:

1 operating stem axis and axis of runner blade oblique in same plane, operating stem (place with one heart pump shaft in) a bit of distance of side-to-side movement makes the angle that the pump leaf can synchronously be set around the forward and reverse rotation of self axis.Abstract is following proposition: main, passive two bar obliques, its shaft axis angle of cut are Ψ x=30 °-45 °, the move left and right driving shaft, and driven axle can be around the forward and reverse rotation of self axis β z=0-± 22.5 °; (see figure 1)

2 lubricating methods are the selflubricating to point;

3 single-stage pumps push away with two-stage pump and push away; (see figure 2)

4 adjusting power are set to system's internal force.

The present invention satisfies the constraint in feasible and unique, the component strength of moving of quantitative relation, the motion of space in the engineering, corresponding sports, the whole reality of feasible process.

Existing division is following:

1 the present invention is a space oblique leverage, and its working principle is seen Fig. 3

Part 1 operating stem and part 2 operation stands connect firmly, can, and can only in plane P, move up and down; Part 6 blades are the simply supported beam of band cantilever, and the supporting of axle afterbody two lays respectively on the inside and outside shell of rotor body, part 6 blades and part 1 operating stem coplane, and the angle of cut is Ψ x, it and part 5 connecting levers link with key, and its ability, and can only be around self rotational; Ball pivot and part 5 connecting lever pins join on the part 4, can only in the M of plane, move; 3 times ball pivots of part and part 2 operation stand pins join, and can only in plane P, move; The common part of ball pivot is a space enclosed sphere lower pair on 3 times ball pivots of part and the part 4, dodges the groove at 3 times ball pivot round bars of part position when having ball pivot relative movement on 3 times ball pivots of part, the part 4 on the interior spherical shell.

The common sites of ball pivot on 3 times ball pivots of part and the part 4-ball is secondary, and both in the P plane, in the M plane, its movement locus must be positioned on the intersection L on P and M plane again for it.

When part 1 operating stem and the part 2 operation stands segment distance that moves upward, the pin portion of 3 times ball pivots of part moves this distance synchronously, and move on L in the bulb, and ball pivot length can be known because of 3 times, and then sphere center position can be decided, and this position also is a ball pivot sphere center position on the part 4; Because ball pivot length is known on the part 4, part 5 connecting levers are known around the radius that part 6 axis of runner blade rotate, and then part 5 connecting lever angle of swing can be asked; Then the axle of part 6 blades rotates counterclockwise and the identical angle of part 5 connecting levers; That is to say that moving upward of part 1 operating stem changes rotating counterclockwise of part 6 blades into.

When part 1 operating stem and part 2 operation stands move downward, according to aforementioned, can learn moving downward of part 1 operating stem, change clockwise rotating of part 6 blades into.

In the above-mentioned movement process, each of driving link 1 operating stem is confirmed the position, and part 6 blades and middle each part have, and has only a definite position corresponding with it, promptly satisfies the requirement that motion of the present invention maybe be unique with motion.

Motionless when part 1 operating stem, even part 6 blades have rotation trend, whole leverage also is stable.

2 lubricated and sealings

The sphere lower pair of mechanism is used graphite lubrication, adorns black chamber and contacts with ball is secondary, and cut off with periphery;

Blade rotation bearing, pin portion bearing are powder metallurgy oil-impregnated bearing, during design, and according to the load at each position, and the crushing strength of bush material, confirm metal matrix material, select oil-impregnated bearing for use;

Because whole device all together rotates with the transmission shaft of pump, so most of sealing station is a static seal, having only blade rotation place and operating stem shaft place is the motive sealing of mesolow, low speed.

To the deep water submerge, the rotor body hub is in barotropic state.The blade rotary part is with " λ " silicone rubber seal; Operating stem shaft place is with common piston rod Y shape rubber seal

3 single-stage pumps push away with two-stage pump and push away, and can both realize full adjusting, and the latter is relative, and the former is complicated, but feasible.(see figure 2)

4 regulators place on the pump shaft, thereby adjusting power is set to system's internal force, and power only acts on work done object-water, to not showing the effect of power outside the system, regulate the power source of power, are a micromachine.

Description of drawings

Fig. 1 is a single-stage pump spray structure diagram.

Fig. 2 is a two-stage pump spray pump structure sketch.

Fig. 3 is the controlling mechanism schematic diagram.

Fig. 4 is the moving design sketch of transferring of wide-angle, and a just navigates; B stays boat; C falls to navigate.

Practical implementation

Whole theoretical calculation of the present invention and actual the manufacturing, available data and technical equipment all can satisfy (see figure 4).

A) bulk of this member constraint can be optimized to satisfy between hub ratio (0.35 or big slightly), member are with material, regulator operating oil pressure three elements;

B) respective amount of corresponding sports relation, the available method of suitably choosing each rod member length satisfies;

C) component strength and calculating, the blade that provides during according to design is used mechanics of materials fourth strength theory in the waterpower and the Hydraulic Moment of each particular job position, each rod member is made regular tenacity calculate;

D) processing of blade distinguish and rotor body assembly.(see figure 4)

Claims

1. the full controlling device of blade wide-angle of mixed-flow water jet propulsion pump, it is characterized in that: operating stem axis and blade-span axis be oblique in same plane, a bit of distance of operating stem side-to-side movement, the angle that the blade synchronization ground of pump is set around the forward and reverse rotation of self axis.

2. device according to claim 1 is characterized in that: the sharf spin angle can be regulated in ° scope of 0-± 22.5.

3. device according to claim 1 is characterized in that: device comprises enclosed sphere lower pair, has the groove of dodging down the club motion on the secondary ectosphere of ball.

4. device according to claim 1 is characterized in that: the sphere lower pair of device, use graphite lubrication, and adorn black chamber and contact, and cut off with periphery with ball is secondary.

5. device according to claim 1 is characterized in that: the blade rotation bearing of device, pin portion bearing are powder metallurgy oil-impregnated bearing.

6. device according to claim 1 is characterized in that: two-stage pump pushes away and can adopt this structure;

7. device according to claim 1 is characterized in that: regulator places on the pump shaft, and adjusting power is set to system's internal force, to not showing the effect of power outside the system.