A water turbine with a guide vane mechanism for improving unit stability

Abstract

The utility model relates to the technical field of water turbine guide vane mechanisms, and discloses a water turbine with a guide vane mechanism that improves the stability of the unit, comprising a top cover, a volute, a main shaft, a runner and a guide vane mechanism, wherein a closed groove is provided on the periphery of the guide vane mechanism, a closing piece is installed at one side of the guide vane mechanism, and a sealing gasket is provided on the inner side of the closing piece. In the utility model, when the multiple groups of guide vane mechanisms are driven to rotate by a control shaft, every two groups of guide vane mechanisms will be close to each other and closed and squeezed through the sealing gasket, so that the joints of every two groups of guide vane mechanisms form a closed state, and when the hydraulic drive device inside the hydraulic drive box is started, the limit pressure plate can be driven by the drive rod to move and abut against the periphery of the closed guide vane mechanism for limiting, and the multiple groups of guide vane mechanisms can form a tooth meshing limit with the inner side of the drive ring through the gear sleeve, and at this time, the multiple groups of closed guide vane mechanisms form a sealed locking state, so that the individual guide vane mechanisms are prevented from deflecting and bumping when the water source impacts.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbine guide vane mechanisms, in particular to a water turbine with a guide vane mechanism for improving the stability of a unit. Background Art

[0002] The guide vane mechanism of the turbine is controlled to swing by the guide vane crank arm in cooperation with the relay, so that they are closed to each other to block the liquid. However, when the existing guide vane mechanism is driven to rotate and close, a gap will be generated between each two sets of guide vane mechanisms, resulting in that when the water source is blocked, the water source is easy to penetrate through the gap between the guide vane mechanisms to produce penetration shock, making it easy for multiple sets of guide vane mechanisms to shake and deflect. When the guide vane mechanism deflects and collides for a long time, it is easy to cause damage to the blades, affecting the stability of the turbine. For this reason, we propose a turbine with a guide vane mechanism that improves the stability of the unit. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a water turbine with a guide vane mechanism which can improve the stability of the unit.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a water turbine with a guide vane mechanism for improving the stability of the unit, comprising a top cover, a volute, a main shaft, a runner and a guide vane mechanism, wherein a closed groove is provided on the periphery of the guide vane mechanism, and the closed groove is an arc-shaped groove body, a closing piece is installed on one side of the guide vane mechanism, a sealing gasket is provided on the inner side of the closing piece, and the sealing gasket itself has a deformation characteristic, a hydraulic drive box is provided on the periphery of the volute, and the interior of the hydraulic drive of the drive rod is matched, a docking groove is provided on the periphery of the volute, the periphery of the drive rod is sealed with the interior of the docking groove, and a limiting pressure plate is installed on the end of the drive rod.

[0005] Preferably, when the multiple groups of guide vane mechanisms are driven to rotate, one group of the guide vane mechanisms is in a docking and clamping state with the closed grooves inside another group of the guide vane mechanisms through the closing piece, and the sealing gaskets inside the closed grooves are in an extruded and sealed state through the closing piece;

[0006] Furthermore, the limiting pressure plate is an arc-shaped plate body. When the hydraulic drive box controls the limiting pressure plate to dock with the periphery of the closed guide vane mechanism through the driving rod, the multiple guide vane mechanisms are in a limiting locking state through the limiting pressure plate.

[0007] Preferably, a circular groove is provided at the top of the volute, a control shaft rotatably matched with the inner side of the circular groove is installed at the top of the guide vane mechanism, a gear sleeve is installed on the outer sleeve of the control shaft, multiple groups of drive rings are installed on the outer sleeves of the control shafts, teeth are installed on the inner and outer sides of the drive rings, and a gear plate driving the drive ring is provided inside the top cover;

[0008] Furthermore, the inner side of the drive ring is meshed with the gear sleeve outside the control shaft through teeth, and the outer side of the drive ring is meshed with the gear plate through teeth.

[0009] Preferably, a motor is installed on the top of the top cover, a rotating shaft penetrating the interior of the top cover is installed on the end of the motor driving shaft, and the end of the rotating shaft is fixedly connected and matched with the top of the gear plate.

[0010] Beneficial Effects

[0011] The utility model provides a water turbine with a guide vane mechanism for improving the stability of the unit. It has the following beneficial effects:

[0012] (1) A water turbine with a guide vane mechanism for improving the stability of the unit. In this article, when the multiple guide vane mechanisms are driven to rotate by the control shaft, each two guide vane mechanisms will be close to each other, and one of the guide vane mechanisms can be inserted into the closing groove inside the other guide vane mechanism through the closing piece for docking. At this time, the closing piece will be squeezed with the sealing gasket on the inner side of the closing groove, so that the docking point of each two guide vane mechanisms forms a closed state. At this time, the hydraulic drive device inside the hydraulic drive box can be controlled to start, so that the limit pressure plate inside the volute is driven by the drive rod to move and abut against the outer periphery of the closed guide vane mechanism. The multiple guide vane mechanisms can be limited by the gear sleeve outside the control shaft and the inner side of the drive ring to form a tooth meshing limit. At this time, the multiple closed guide vane mechanisms form a sealed locking state, avoiding the deflection and collision of a single guide vane mechanism when the water source impacts, thereby achieving the effect of improving the stability of the water turbine.

[0013] (2) A water turbine with a guide vane mechanism for improving the stability of the unit, wherein the gear sleeve on the outside of the control shaft of the multiple guide vane mechanisms is meshed with the teeth on the inside of the drive ring, and the outer periphery of the drive ring is meshed with the teeth of the gear plate through the teeth. When the motor is started, the motor can drive the gear plate to rotate through the rotating shaft, and the gear plate can control the drive ring to drive the control shaft to rotate through the teeth. In this way, the multiple guide vane mechanisms can be driven to close simultaneously through the drive ring, and the drive is stable and maintenance is simple and convenient. The traditional drive method using a single guide vane crank arm and a relay is changed, thereby achieving the effect of improving the operating stability of the guide vane mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial schematic diagram of the guide vane mechanism of the utility model;

[0018] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0019] Figure 4 For this utility model Figure 1 Enlarged view of middle B;

[0020] Figure 5 For this utility model Figure 1 Enlarged view of middle C;

[0021] Figure 6 It is a partial schematic diagram of the drive ring of the utility model.

[0022] Legend:

[0023] 1. Top cover; 2. Volute; 3. Main shaft; 4. Impeller; 5. Guide vane mechanism; 6. Closing groove; 7. Closing piece; 8. Sealing gasket; 9. Hydraulic drive box; 10. Docking groove; 11. Drive rod; 12. Limit pressure plate; 13. Circular groove; 14. Control shaft; 15. Gear sleeve; 16. Drive ring; 17. Teeth; 18. Motor; 19. Gear plate; 20. Rotating shaft. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment: A water turbine having a guide vane mechanism for improving the stability of the unit, such as Figure 1-Figure 6 As shown, it includes a top cover 1, a volute 2, a main shaft 3, a runner 4 and a guide vane mechanism 5;

[0026] The guide vane mechanism 5 is distinguished from the guide vane mechanism 5 by a closed groove 6 on its periphery, which is an arc-shaped groove body, a closed member 7 is installed on one side of the guide vane mechanism 5, a sealing gasket 8 is arranged on the inner side of the closed member 7, and the sealing gasket 8 itself has a deformation characteristic, a hydraulic drive box 9 is arranged on the periphery of the volute 2, and the hydraulic drive of the drive rod 11 is matched with the inside of the hydraulic drive of the drive rod 11, a docking groove 10 is arranged on the periphery of the volute 2, and the periphery of the drive rod 11 is sealed with the inside of the docking groove 10, and a limited pressure plate 12 is installed on the end of the drive rod 11, and a circular The top of the guide vane mechanism 5 is provided with a control shaft 14 which is rotatably matched with the inner side of the circular groove 13, a gear sleeve 15 is installed on the outer sleeve of the control shaft 14, and multiple sets of control shafts 14 are provided with drive rings 16 on the outer sides of the drive rings 16, and teeth 17 are installed on the inner and outer sides of the drive rings 16. A gear plate 19 which drives the drive ring 16 is arranged inside the top cover 1, and a motor 18 is installed on the top of the top cover 1. A rotating shaft 20 which passes through the inside of the top cover 1 is installed on the driving shaft end of the motor 18, and the end of the rotating shaft 20 is fixedly connected and matched with the top of the gear plate 19.

[0027] Furthermore, when the multiple groups of guide vane mechanisms 5 are driven to rotate, one group of guide vane mechanisms 5 is in a docking and clamping state with the closing groove 6 inside the other group of guide vane mechanisms 5 through the closing piece 7, and the sealing gasket 8 inside the closing groove 6 is in an extruded sealing state through the closing piece 7.

[0028] Furthermore, the limiting pressure plate 12 is an arc-shaped plate body. When the hydraulic drive box 9 controls the limiting pressure plate 12 to dock with the outer periphery of the closed guide vane mechanism 5 through the driving rod 11, the multiple groups of guide vane mechanisms 5 are in a limiting locking state through the limiting pressure plate 12.

[0029] Furthermore, the inner side of the driving ring 16 is meshed with the gear sleeve 15 outside the control shaft 14 through the teeth 17 , and the outer side of the driving ring 16 is meshed with the gear plate 19 through the teeth 17 .

[0030] The working principle of this utility model:

[0031] When the multiple groups of guide vane mechanisms 5 are driven to rotate by the control shaft 14, every two groups of guide vane mechanisms 5 will be close to each other, and one group of guide vane mechanisms 5 can be inserted into the closing groove 6 inside the other group of guide vane mechanisms 5 through the closing member 7 for docking. At this time, the closing member 7 will be squeezed with the sealing gasket 8 on the inner side of the closing groove 6, so that the docking point of every two groups of guide vane mechanisms 5 forms a closed state. At this time, the hydraulic drive device inside the hydraulic drive box 9 can be controlled to start, so that the limiting pressure plate 12 inside the volute 2 is driven by the driving rod 11 to move and abut against the outer periphery of the closed guide vane mechanism 5, and the multiple groups of guide vane mechanisms 5 can form a tooth meshing limit with the inner side of the driving ring 16 through the gear sleeve 15 outside the control shaft 14. At this time, the multiple groups of closed guide vane mechanisms 5 form a sealed locking state, which prevents the deflection and collision of the single guide vane mechanism 5 when the water source impacts, thereby improving the stability of the turbine.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A water turbine having a guide vane mechanism for improving the stability of the unit, characterized in that: The invention comprises a top cover (1), a volute (2), a main shaft (3), a rotor (4) and a guide vane mechanism (5); a closing groove (6) is provided on the periphery of the guide vane mechanism (5); a closing member (7) is installed on one side of the guide vane mechanism (5); a sealing gasket (8) is provided on the inner side of the closing member (7); a hydraulic drive box (9) which is hydraulically driven with a drive rod (11) is provided on the periphery of the volute (2); a docking groove (10) is provided on the periphery of the volute (2); the periphery of the drive rod (11) is sealed with the inside of the docking groove (10); and a limiting pressure plate (12) is installed on the end of the drive rod (11).

2. A water turbine with a guide vane mechanism for improving unit stability according to claim 1, characterized in that: When the plurality of guide vane mechanisms (5) are driven to rotate, one group of the guide vane mechanisms (5) is in a docking and clamping state with the closed grooves (6) inside another group of the guide vane mechanisms (5) through the closing piece (7), and the sealing gaskets (8) inside the closed grooves (6) are in a squeezed and sealed state through the closing piece (7).

3. A water turbine with a guide vane mechanism for improving unit stability according to claim 2, characterized in that: The limiting pressure plate (12) is an arc-shaped plate body. When the hydraulic drive box (9) controls the limiting pressure plate (12) to dock with the periphery of the closed guide vane mechanism (5) through the driving rod (11), multiple groups of the guide vane mechanisms (5) are in a limiting locking state through the limiting pressure plate (12).

4. A water turbine with a guide vane mechanism for improving unit stability according to claim 1, characterized in that: A circular groove (13) is provided on the top of the volute (2); a control shaft (14) rotatably matched with the inner side of the circular groove (13) is installed on the top of the guide vane mechanism (5); a gear sleeve (15) is installed on the outer side of the control shaft (14); multiple groups of teeth (17) are installed on the inner and outer sides of the control shaft (14) through a driving ring (16); and a gear plate (19) is provided inside the top cover (1).

5. A water turbine with a guide vane mechanism for improving unit stability according to claim 4, characterized in that: The inner side of the drive ring (16) is meshed with the gear sleeve (15) outside the control shaft (14) through the teeth (17), and the outer side of the drive ring (16) is meshed with the gear plate (19) through the teeth (17).

6. A water turbine with a guide vane mechanism for improving unit stability according to claim 5, characterized in that: A motor (18) is installed on the top of the top cover (1), and a rotating shaft (20) penetrating the interior of the top cover (1) is installed on the driving shaft end of the motor (18), and the end of the rotating shaft (20) is fixedly connected and matched with the top of the gear plate (19).

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