CN217129676U - Water guide device - Google Patents

Abstract

The utility model belongs to the technical field of the technique of hydraulic turbine equipment and specifically relates to a water guide device is related to, and it includes frame, control ring, first pivot, second pivot, first guide vane arm, second guide vane arm, guide vane and actuating mechanism, the control ring rotate connect in on the frame perisporium, actuating mechanism is used for driving the control ring rotates, and a plurality of first pivots set up on the control ring, and first guide vane arm one end is rotated and is connected in first pivot, and second guide vane arm one end is rotated and is connected the one end of keeping away from first pivot with first guide vane arm, and second guide vane arm other end and second pivot fixed connection, second pivot rotate connect in the frame, guide vane fixed connection is the angle setting in the second pivot in the one end of keeping away from second guide vane arm, between first guide vane arm and the second guide vane arm. The water guide vane adjusting device has the effect of conveniently adjusting the water guide vane to the middle angle state.

Description

Water guide device

Technical Field

The application relates to the technical field of water turbine equipment, in particular to a water guide device.

Background

The water turbine is a device for converting water flow energy into mechanical energy, and generally comprises a water inlet assembly, a water guide assembly, a rotating wheel and a tail water assembly, wherein water led out from a reservoir enters from the water inlet assembly, the water guide assembly is mainly used for controlling whether the water can enter the rotating wheel, when the water guide assembly is closed, the water in the water inlet assembly cannot enter the rotating wheel, when the water guide assembly is opened, the water in the water inlet assembly can enter the rotating wheel, and when the water enters the rotating wheel, the water guide assembly can also control the water flow circulation amount entering the rotating wheel, so that the water turbine is ensured to have good hydraulic characteristics; the water is finally discharged from the tail water assembly.

The existing water distributor comprises a control ring, a driving mechanism connected with the control ring, a plurality of guide vanes which are located in the range of the control ring and are fixed in a rotating mode, each guide vane comprises a rotating shaft and a guide vane connected with the front end of the rotating shaft, the existing water distributor further comprises a connecting column uniformly distributed on the control ring and a guide vane arm connected with the rear end of the rotating shaft in a sliding mode, and one end, far away from the rotating shaft, of each guide vane arm is connected to the connecting column.

The driving mechanism drives the control ring to rotate, the connecting column rotates along with the control ring, the guide vane arm rotates along with the connecting column, and the guide vane arm drives the guide vane to rotate through the rotating shaft, so that the angle of the guide vane is changed, and the function of flow regulation is realized.

But the spliced pole in the above-mentioned patent is integrative spliced pole of straight line, when the control ring rotates less angle, the spliced pole just can drive guide vane and rotate great angle, when the control ring rotates, guide vane arm must can take place the rotation thereupon, there is not any buffering time in the centre for the state conversion of guide vane between full open and full cut-off is very sensitive, when needs adjust rivers circulation and will make the position of guide vane be in a certain middle angle, need the control ring to rotate very slight distance, the adjustment space is little, the operation difficulty is great.

SUMMERY OF THE UTILITY MODEL

In order to conveniently adjust the water guide vanes to the middle angle state, the application provides a water guide device.

The application provides a water guide device adopts following technical scheme:

a water guide device, which comprises a frame, a control ring, a first rotating shaft, a second rotating shaft, a first guide vane arm, a second guide vane arm, a guide vane and a driving mechanism, the control ring is rotationally connected to the circumferential wall of the frame, the driving mechanism is used for driving the control ring to rotate along the circumferential wall of the frame, the first rotating shafts are arranged on the control ring and are arranged at intervals, one end of the first guide vane arm is rotationally connected with the first rotating shaft, one end of the second guide vane arm is rotationally connected with one end of the first guide vane arm far away from the first rotating shaft, the other end of the second guide vane arm is fixedly connected with the second rotating shaft which is rotatably connected on the frame, the guide vane is fixedly connected to one end, far away from the second guide vane arm, of the second rotating shaft, and the first guide vane arm and the second guide vane arm are arranged at an angle.

By adopting the technical scheme, the driving mechanism drives the control ring to rotate, the control ring drives the first rotating shaft to rotate, the first rotating shaft drives one end of the first guide vane arm to move, the other end of the first guide vane arm simultaneously moves, thereby driving the second guide vane arm to move, the second guide vane arm moves to drive the second rotating shaft to rotate, so as to drive the guide vane to rotate, because first guide vane arm and second guide vane arm are the angle setting and have the transmission effect, so when the control ring pivoted, first guide vane arm takes place relative movement earlier, just can drive second guide vane arm and relative guide vane and take place to rotate, the event makes the control ring drive the guide vane through the transmission effect and has great rotation space when rotating, the control ring can not appear rotating a bit, will make the guide vane change the condition between the full-open, full-close state fast thereupon, make operating personnel can be comparatively light make the guide vane be in the intermediate state.

Preferably, the driving mechanism comprises a servomotor, an output end of the servomotor is rotatably connected with a rotating seat, and the rotating seat is fixedly connected to the control ring.

By adopting the technical scheme, the servomotor can drive the output end to do reciprocating telescopic motion under the condition of different water pressures so as to drive the control ring to do reciprocating rotation, and further drive the guide vane to do reciprocating motion under the fully-open and fully-closed states.

Preferably, a reinforcing shaft is rotatably arranged at the joint of the first guide vane arm and the second guide vane arm, and the reinforcing shaft penetrates through the first guide vane arm and the second guide vane arm respectively.

Through adopting above-mentioned technical scheme, because of water pressure is great when, can bear great pressure on the stator piece, so set up the reinforcing shaft with the junction of first guide vane arm and second guide vane arm for when guide vane received pressure, can have sufficient intensity between first guide vane arm and the second guide vane arm and guarantee to connect, reduce the cracked possibility of connection.

Preferably, the thickness of one side of the guide vane is greater than the thickness of the other end of the guide vane.

By adopting the technical scheme, the thickness of one end of the guide vane is larger than that of the other end, so that the guide vane is streamlined, and the flow speed of water flowing during passing is improved.

Preferably, the diameter of the second rotating shaft is greater than that of the first rotating shaft, and correspondingly, the diameter of one end, rotatably connected to the second rotating shaft, of the second guide vane arm is greater than that of one end, rotatably connected to the first rotating shaft, of the second guide vane arm.

Through adopting above-mentioned technical scheme, because of leading blade fixed connection in the second pivot, and when the rivers through, a large amount of water can erode to the stator piece, especially when being in the totally-closed state, when the pressure of water all pressed on the stator piece, the pressure that bears on the stator piece must be very big, sets up great pivot and can improve the bearing capacity of leading blade for less leading blade and second pivot take place the possibility of fracture damage.

Preferably, the cutting-off mechanism further comprises a cutting-off rod and a cutting-off seat, the cutting-off rod is fixedly connected to the peripheral wall of the second rotating shaft and protrudes out of the peripheral wall of the second rotating shaft, the cutting-off seat is fixedly connected to the rack and corresponds to the cutting-off rod, and the cutting-off seat is used for blocking the cutting-off rod.

Through adopting above-mentioned technical scheme, avoid at the water guide in-process for a plurality of guide vanes can obtain best water guide angle and keep in this state when being in full open state, so when guide vanes are in best water guide angle, cut to seat and end the pole and take place the butt, with this reduction guide vanes continues pivoted possibility.

Preferably, a plurality of water guide plates are fixedly connected in the control ring, and the plurality of water guide plates and the plurality of guide blades are arranged correspondingly.

Through adopting above-mentioned technical scheme, the water guide plate carries out the preliminary treatment to rivers for rivers can form certain rivers ring in advance through the preliminary treatment, improve the water guide effect.

Preferably, one end of the guide vane, which is far away from the second rotating shaft, is provided with a third rotating shaft, and the third rotating shaft is rotatably connected with the rack.

Through adopting above-mentioned technical scheme, when the guide vane receives the rotation of second pivot and when rotating together thereupon, the third pivot rotates simultaneously, improves guide vane's rotation effect on the one hand, and on the other hand also plays the supporting role to guide vane.

In summary, the present application at least includes the following beneficial technical effects:

the driving mechanism drives the control ring to rotate, the control ring drives the first rotating shaft to rotate, the first rotating shaft drives one end of the first guide vane arm to move, the other end of the first guide vane arm moves simultaneously, thereby driving the second guide vane arm to move, the second guide vane arm moves to drive the second rotating shaft to rotate, so as to drive the guide vane to rotate, because first guide vane arm and second guide vane arm are the angle setting and have the transmission effect, so when the control ring pivoted, first guide vane arm takes place relative movement earlier, just can drive second guide vane arm and relative guide vane and take place to rotate, the event makes the control ring drive the guide vane through the transmission effect and has great rotation space when rotating, the control ring can not appear rotating a bit, will make the guide vane change fast thereupon and open, the condition of full cut-off state, make that operating personnel can be comparatively light make the guide vane be in the intermediate condition.

Drawings

FIG. 1 is a schematic plan view of an embodiment of the present application;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along a vertical direction in an embodiment of the present application;

fig. 4 is a partial structural schematic diagram in the embodiment of the present application.

Description of reference numerals: 1. a frame; 2. a control loop; 3. a first rotating shaft; 4. a second rotating shaft; 5. a first guide vane arm; 6. a second guide vane arm; 7. a guide vane; 8. a drive mechanism; 9. reinforcing the shaft; 10. a cut-off mechanism; 101. a cut-off lever; 102. a stopping seat; 11. a water guide plate; 12. a third rotating shaft; 13. and (6) rotating the seat.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a water guide device.

As shown in fig. 1 and 2, a water guide apparatus includes a frame 1, a control ring 2, a first rotating shaft 3, a second rotating shaft 4, a first vane arm 5, a second vane arm 6, a vane 7, and a driving mechanism 8.

Wherein frame 1 is annular frame plate, and common frame 1 generally sets up inside the spiral case now, and after water entered the spiral case, water entered frame 1 in the peripheral position of frame 1 to from the opening part outflow of frame 1 one side.

The control ring 2 is rotatably connected to the peripheral wall of the frame 1, and the control ring 2 is also a ring-shaped member.

As shown in fig. 1 and 2, a driving mechanism 8 is disposed on the control ring 2, and the driving mechanism 8 is used for driving the control ring 2 to rotate along the peripheral wall direction of the frame 1. In this embodiment, the driving mechanism 8 includes a servomotor, an output end of the servomotor is rotatably connected to a rotating base 14, and an end of the rotating base 14 away from the servomotor is fixedly connected to the control ring 2.

The servomotor adjusts the opening of the water distributor according to the flow and the output condition, and is generally divided into a single adjustment mode and a double adjustment mode, wherein the mixed flow mode and the fixed paddle mode are single adjustment modes, and only a guide vane switch (the model can be WT or BWT) of the water distributor is adjusted; the double regulation is used for a rotary propeller type and a through-flow rotary propeller type unit, the angle of a blade is regulated according to the conditions of station water energy and the like besides regulating a water guide mechanism (the model can be WST and BWST), a single-cylinder servomotor or a double-cylinder servomotor is selected according to the speed regulation work, and at present, high-pressure servomotors, 6.3MPa and 16MPa, are widely used.

And the servomotor is arranged along the radial tangential direction of the control ring 2, when the servomotor extends out or retracts, the control ring 2 can rotate along the anticlockwise direction or the clockwise direction under the driving of the servomotor.

The first shafts 3 are rotatably connected to the control ring 2 and are spaced from each other, wherein the first shafts 3 are disposed on the top wall of the control ring 2.

One end of the first guide vane arm 5 is sleeved on the first rotating shaft 3 and is rotatably connected to the first rotating shaft 3. Each first shaft 3 is provided with a first vane arm 5.

One end of the second guide vane arm 6 is rotatably connected with one end of the first guide vane arm 5 far away from the first rotating shaft 3, and the other end of the second guide vane arm 6 is fixedly connected with the second rotating shaft 4.

The first guide vane arm 5 and the second guide vane arm 6 are both components with holes at both ends. In order to improve the strength of the first guide vane arm 5 and the second guide vane arm 6 during rotation and reduce the possibility of damage when the first guide vane arm 5 and the second guide vane arm 6 are rotatably connected, in the embodiment, a reinforcing shaft 9 is rotatably connected to the joint between the first guide vane arm 5 and the second guide vane arm 6, and the reinforcing shaft 9 respectively penetrates through the first guide vane arm 5 and the second guide vane arm 6.

As shown in fig. 2 and 4, one end of the second vane arm 6, which is far away from the reinforcing shaft 9, is fixedly connected to the second rotating shaft 4, in this embodiment, the second vane arm 6 and the second rotating shaft 4 are integrally connected, and the second rotating shaft 4 is rotatably connected to the frame 1.

The guide vane 7 is fixedly connected to one end of the second rotating shaft 4 far away from the second guide vane arm 6, the frame 1 separates the second rotating shaft 4 from the guide vane 7, the second rotating shaft 4 protrudes out of the top end face of the frame 1, and the guide vane 7 protrudes out of the bottom end face of the frame 1. When the guide vanes 7 are in a fully closed state, two adjacent guide vanes 7 are in a state of head-to-tail mutual clearance fit.

The first guide vane arm 5 and the second guide vane arm 6 are arranged at an angle. And the angles of the first guide vane arms 5 and the second guide vane arms 6 of a plurality of groups are the same and are arranged uniformly.

By this method, the guide vane arm in the present embodiment is divided into the first guide vane arm 5 and the second guide vane arm 6 to realize linkage, unlike the conventional integrated linear guide vane arm. When the driving mechanism 8 drives the control ring 2 to rotate, because the frame 1 is fixed, the position of the first rotating shaft 3 changes according to the rotation of the control ring 2, the position of the first guide vane arm 5 close to one end of the control shaft changes, so that one end of the first guide vane arm 5 close to the second guide vane arm 6 moves, and then one end of the second guide vane arm 6 close to the first guide vane arm 5 moves, and one end of the second guide vane arm 6 far from the first guide vane arm 5 moves, and finally the second rotating shaft 4 rotates, the second rotating shaft 4 rotates to drive the guide vanes 7 to rotate, so that the guide vanes 7 change between the full-open position, the middle position and the full-close position, because the method adopts a linkage mode, when the control ring 2 rotates, the first guide vane arm 5 changes the position and the rotation angle, and then the second guide vane arm 6 changes the position and the rotation angle, therefore, the guide vane 7 is controlled, the adjusting space is increased, the guide vane 7 can not be driven to rotate when the control ring 2 rotates by a certain angle, the sensitivity is reduced through the transmission process of the first guide vane arm 5-the second guide vane arm 6, and an operator can find the middle position more stably.

As shown in fig. 1 and 2, for example, when the control ring 2 rotates clockwise, the first rotating shaft 3 moves along with the movement of the control ring 2, and the first vane arm 5 rotates on the first rotating shaft 3, and the end of the second vane arm 6 close to the first vane arm 5 moves inwards along with the movement, and drives the second rotating shaft 4 to rotate clockwise, and the vane 7 rotates clockwise along with the rotation, and at this time, the vanes 7 are all closed, and at this time, the fully closed state is achieved; on the contrary, when the control ring 2 rotates counterclockwise, the guide vanes 7 will be opened slowly, and because the initial rotation amount of the control ring 2 is used to control the rotation of the first guide vane arm 5, but will not directly drive the rotation of the second guide vane arm 6, the rotation amount of the control ring 2 is increased compared to the integral linear guide vane arm, and more rotation strokes can be used to control the rotation of the guide vanes 7.

Wherein, in order to improve the flow effect of rivers circulation volume in the water guide process, in an embodiment, the thickness of guide vane 7 one side is greater than the thickness of opposite side for guide vane 7 is water droplet formula shape, and when being in full open state and making water pass through around guide vane 7, water contacts the great one end of thickness earlier and flows to the less one end of thickness again, makes guide vane 7 be streamlined, and rivers can be faster more powerful when passing through, improve the follow-up effect when generating electricity through rivers. When the guide vanes 7 are in clearance fit end to end, the end with smaller thickness contacts the end with larger thickness of the adjacent guide vane 7.

The diameter of the second rotating shaft 4 is larger than that of the first rotating shaft 3, and correspondingly, the diameter of one end of the second guide vane arm 6 which is rotatably connected to the second rotating shaft 4 is larger than that of one end of the second guide vane arm 6 which is rotatably connected to the first rotating shaft 3.

Because the guide vane 7 is fixedly connected to the second rotating shaft 4, and when water flows through, a large amount of water can be washed onto the guide vane 7, especially when the water is in a fully closed state, when the pressure of the water is pressed on the guide vane 7, the pressure borne by the guide vane 7 is necessarily very large, and the bearing capacity of the guide vane 7 can be improved by arranging the larger rotating shaft, so that the possibility of fracture and damage of the guide vane 7 and the second rotating shaft 4 is reduced.

As shown in fig. 2 and 4, while the first rotating shaft 3 is smaller than the second rotating shaft 4, when the first rotating shaft 3 moves a larger distance along the circumference, the rotating angle of the second rotating shaft 4 is smaller because the diameter of the second rotating shaft 4 is larger, thereby further improving the convenience of rotating to the middle position.

In order to avoid that the best water guiding angle can be obtained and kept in the state when the guide vanes 7 are in the full-open state during the water guiding process, in another embodiment, the cut-off mechanism 10 is further included, and the cut-off mechanism 10 comprises a cut-off rod 101 and a cut-off seat 102. The stop rod 101 is fixedly connected to the peripheral wall of the second rotating shaft 4, and the stop rod 101 protrudes from the peripheral wall of the second rotating shaft 4. The stopping seat 102 is fixedly connected to the frame 1, the stopping seat 102 protrudes from the top surface of the frame 1, the stopping seat is arranged corresponding to the stopping rod 101, and the stopping seat 102 is used for blocking the stopping rod 101.

As shown in fig. 1 and fig. 2, a stop rod 101 is correspondingly disposed at each second rotating shaft 4, and a stop seat 102 is correspondingly disposed at each stop rod 101.

When the control ring 2 rotates, make second pivot 4 rotate after the transmission through first guide vane arm 5 and second guide vane arm 6, thereby drive and cut off pole 101 and rotate, when guide vane 7 is about to be in full open state and the best position of water guide effect, cut off pole 101 and cut off seat 102 and take place the butt, cut off seat 102 and prevent to cut off pole 101 and continue to remove, thereby prevent that second pivot 4 from continuing to rotate, can automatic stop like this and guide vane 7 when the best angle of water guide effect just avoids rivers great takes place the mistake and rotates.

A plurality of water guide plates 11 are fixedly connected in the control ring 2, the water guide plates 11 are used for preprocessing water flow before the guide vanes 7 guide the water flow, the water guide plates 11 are obliquely arranged, and the inclination angle is the same as the angle of the guide vanes 7 in the fully open state. The water guide plates 11 are provided in plurality, and the plurality of water guide plates 11 are arranged corresponding to the guide vanes 7. When the control ring 2 drives the guide vanes 7 to be in a fully open state, the guide vanes 7 and the corresponding guide vanes 7 are positioned on the same straight line, so that water flow can form a certain water flow ring in advance through pretreatment, and the water guide effect is improved.

As shown in fig. 2 and fig. 3, a third rotating shaft 12 is disposed at an end of the guide vane 7 away from the second rotating shaft 4, the second rotating shaft 4 is rotatably connected to the frame 1, and the guide vane 7 is fixedly connected to the third rotating shaft 12. When the guide vane 7 is rotated by the second rotating shaft 4, the third rotating shaft 12 rotates simultaneously, on one hand, the rotating effect of the guide vane 7 is improved, and on the other hand, the guide vane 7 is also supported.

The implementation principle is as follows:

the guide vane arm is divided into a first guide vane arm 5 and a second guide vane arm 6 to realize linkage. When the driving mechanism 8 drives the control ring 2 to rotate, because the frame 1 is fixed, the position of the first rotating shaft 3 changes according to the rotation of the control ring 2, the position of the first guide vane arm 5 close to one end of the control shaft changes, so that one end of the first guide vane arm 5 close to the second guide vane arm 6 moves, and then one end of the second guide vane arm 6 close to the first guide vane arm 5 moves, and one end of the second guide vane arm 6 far from the first guide vane arm 5 moves, and finally the second rotating shaft 4 rotates, the second rotating shaft 4 rotates to drive the guide vanes 7 to rotate, so that the guide vanes 7 change between the full-open position, the middle position and the full-close position, because the method adopts a linkage mode, when the control ring 2 rotates, the first guide vane arm 5 changes the position and the rotation angle, and then the second guide vane arm 6 changes the position and the rotation angle, therefore, the guide vane 7 is controlled, the adjusting space is increased, the guide vane 7 can not be driven to rotate when the control ring 2 rotates by a certain angle, the sensitivity is reduced through the transmission process of the first guide vane arm 5-the second guide vane arm 6, and an operator can find the middle position more stably.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A water guide device is characterized in that: the device comprises a rack (1), a control ring (2), a first rotating shaft (3), a second rotating shaft (4), a first guide vane arm (5), a second guide vane arm (6), guide vanes (7) and a driving mechanism (8), wherein the rack is provided with a first guide vane arm and a second guide vane arm;

the control ring (2) is rotationally connected to the circumferential wall of the rack (1), the driving mechanism (8) is used for driving the control ring (2) to rotate along the circumferential wall of the rack (1), the first rotating shafts (3) are arranged on the control ring (2) and are arranged at intervals, one end of the first guide vane arm (5) is rotatably connected with the first rotating shaft (3), one end of the second guide vane arm (6) is rotatably connected with one end of the first guide vane arm (5) far away from the first rotating shaft (3), the other end of the second guide vane arm (6) is fixedly connected with the second rotating shaft (4), the second rotating shaft (4) is rotatably connected to the rack (1), the guide vane (7) is fixedly connected to one end of the second rotating shaft (4) far away from the second guide vane arm (6), the first guide vane arm (5) and the second guide vane arm (6) are arranged at an angle.

2. The water guide apparatus as claimed in claim 1, wherein: the driving mechanism (8) comprises a servomotor, the output end of the servomotor is rotatably connected with a rotating seat (14), and the rotating seat (14) is fixedly connected to the control ring (2).

3. The water guide apparatus as claimed in claim 1, wherein: the junction of first guide vane arm (5) and second guide vane arm (6) rotates and is provided with reinforcing shaft (9), reinforcing shaft (9) pass respectively first guide vane arm (5) and second guide vane arm (6).

4. The water guide apparatus as claimed in claim 1, wherein: the thickness of one side of the guide vane (7) is larger than that of the other end of the guide vane (7).

5. The water guide apparatus as claimed in claim 1, wherein: the diameter of second pivot (4) is greater than the diameter of first pivot (3), and correspondingly, second guide vane arm (6) rotate connect in the one end diameter of second pivot (4) be greater than second guide vane arm (6) rotate connect in the one end of first pivot (3).

6. The water guide apparatus as claimed in claim 1, wherein: the stop mechanism (10) comprises a stop rod (101) and a stop seat (102), the stop rod (101) is fixedly connected to the peripheral wall of the second rotating shaft (4), the stop rod (101) protrudes out of the peripheral wall of the second rotating shaft (4), the stop seat (102) is fixedly connected to the rack (1), the stop seat (102) and the stop rod (101) are arranged correspondingly, and the stop seat (102) is used for blocking the stop rod (101).

7. The water guide apparatus as claimed in claim 1, wherein: a plurality of water guide plates (11) are fixedly connected in the control ring (2), and the plurality of water guide plates (11) are arranged corresponding to the plurality of guide blades (7).

8. The water guide apparatus as claimed in claim 1, wherein: one end, far away from second pivot (4), of guide vane (7) is provided with third pivot (12), third pivot (12) rotate connect in on frame (1).

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