A bulb-type tubular turbine pump

Abstract

The present invention discloses a bulb-type cross-flow water turbine pump, which relates to the technical field of bulb-type cross-flow water turbine pumps. It includes: a water turbine protection frame, a water turbine pump bulb shell and a runner; it also includes: a guide vane body distributed in an annular manner outside the water turbine pump bulb shell, and a guide vane rotating shaft is fixedly provided at one end of the guide vane body, a laterally provided positioning plate is attached to the central portion of the guide vane body, and a movable inner slide is slidably connected in the groove of the positioning plate; an operating column is fixedly provided on the top of the movable inner slide, and a driving mechanism for driving the operating column to move laterally along one side of the positioning plate is provided on the operating column; a front support main board is installed on one side of the guide vane rotating shaft. The present invention extends the limiting horizontal plate portion into the inner plate to strengthen the positioning of the guide vane body, thereby reducing the force on the hydraulic mechanism, reducing the repeated circulation of the hydraulic system oil, causing energy waste and oil temperature rise, and improving the service life and stability of the hydraulic system.

Description

Technical Field

[0001] The invention belongs to the technical field of bulb-type tubular water turbine pumps, and in particular relates to a bulb-type tubular water turbine pump. Background Art

[0002] A tubular flow pump is a type of horizontal axial flow pump, consisting of an electric motor, a reduction gear, and a water pump. It is installed in a machine pit inside an underwater dam. Its inlet and outlet water flow channels are located in a straight line, approximately in the shape of a straight cylinder. It has low hydraulic loss, high water-lifting efficiency, a compact structure, is easy to install and maintain, and the pumping station project is simple.

[0003] There are three types of pumps: bulb-type, shaft-type, and shaft-type. The bulb-type is the most commonly used and can be categorized into fixed and adjustable impeller blades. The flow path is a straight cylindrical passage from the suction port to the discharge port, without a volute. The power unit is housed within the bulb body of the pump. This offers a compact size, low pumphouse construction costs, low noise levels, minimal hydraulic losses, and high efficiency. However, it places high demands on the power unit structure, transmission mechanism, and ventilation measures.

[0004] At present, for bulb-type cross-flow turbine pumps, the water flow moves from the big end of the bulb to the impeller at the end, and the guide vanes play the role of regulating the turbine flow. When necessary, the guide vanes must be closed to cut off the water flow. The guide vanes are generally adjusted by rotating the inclination angle. The power source is a relay, that is, a hydraulic mechanism. The rotation of the guide vanes is achieved through the hydraulic mechanism. When it is necessary to cut off the water flow and close the guide vanes, since there is no external mechanical structure involved, the hydraulic mechanism needs to be continuously used, which will cause the oil to circulate repeatedly, resulting in energy waste and increased oil temperature. High temperature will accelerate oil oxidation and aging of seals, reduce system efficiency, and even cause overheating alarm shutdown, which poses certain hidden dangers. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a bulb-type cross-flow turbine pump, which can effectively solve the problems of the prior art.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a bulb-type cross-flow water turbine pump, comprising: a water turbine protection frame, a water turbine pump bulb shell arranged inside the water turbine protection frame, and a runner installed at the front end of the water turbine pump bulb shell;

[0008] Also includes:

[0009] The guide vane body is annularly distributed outside the water turbine pump bulb shell, and a guide vane rotating shaft is fixed at one end of the guide vane body. A horizontally arranged positioning plate is attached to the center of the guide vane body, and a movable inner slide is slidably connected in the groove of the positioning plate.

[0010] The operating column is fixed on the top of the movable inner slide plate, and a driving mechanism is provided on the operating column for driving the operating column to move horizontally along one side of the positioning plate;

[0011] The front support main board is installed on one side of the guide vane shaft, and a support inner hole is provided on the surface of the front support main board. The groove of the support inner hole is slidably connected to the toggle inner plate. The surface of the toggle inner plate is connected to the limiting horizontal plate part through the extended inner plate and the rotating connecting rod. The side of the guide vane body is provided with a toggle inner plate that is plugged into and adapted to the limiting horizontal plate part.

[0012] Furthermore, a guide vane outer sleeve ring plate is fixedly provided on the inner wall of the water wheel guard frame and located on the periphery of the guide vane body, and a guide vane front support ring plate is fixedly provided at the front end of the guide vane outer sleeve ring plate, and a front support guide plate corresponding to the position of the front support main board is fixedly provided on the surface of the guide vane front support ring plate.

[0013] Furthermore, a closed pressing opening is provided on the side of the front support main board to allow the side of the guide vane body to be inserted, and the driving mechanism includes a toggle connecting block, a toggle rod and a guide vane linkage ring.

[0014] Furthermore, a plate rotation hole is provided on the surface of the guide vane body, and a plate positioning shaft that rotates along the plate rotation hole is fixed at one end of the positioning plate. An inner sliding groove that allows the movable inner slide to be inserted is provided on the surface of the positioning plate, and a sliding block that slides along the inner sliding groove is fixed on the surface of the movable inner slide.

[0015] Furthermore, a plate movable groove is provided on the surface of the guide vane body and is located on one side of the plate rotation hole. A movable side block is fixed on the surface of the positioning plate and slides along the plate movable groove.

[0016] Furthermore, the inner wall of the guide vane outer ring plate is provided with a groove that allows the guide vane linkage ring to move in annular motion. The inner wall of the guide vane outer ring plate is connected to a hydraulic drive component through a rotating shaft. The output end of the hydraulic drive component is connected to a driving ring. The inner wall of the driving ring is rotatably connected to a linkage shaft fixedly connected to the guide vane linkage ring.

[0017] Furthermore, a convex plate extending to one side is fixed on the surface of the extended inner plate, and multiple groups of spring parts are connected to the surface of the convex plate. The other end of the spring part is connected to the inner wall of the cavity that opens the inner hole, and the inclined surface of the inner plate is pushed toward the front end of the positioning plate.

[0018] Furthermore, an arc top plate is fixedly provided at the top of the open inner hole, a longitudinal through hole is provided at a position of the guide vane body near the guide vane rotating shaft, a longitudinal pressure shaft is slidably connected in the longitudinal through hole, and an arc-shaped top plate positioning groove with equal intervals is provided at the bottom of the arc top plate, and a pressure shaft top convex strip is fixedly provided on the top of the longitudinal pressure shaft which is plugged into the top plate positioning groove.

[0019] Furthermore, a bending touch plate is fixedly provided on the end surface of the longitudinal pressure shaft extending downward through the longitudinal through hole. The bending touch plate adopts an arc-shaped plate structure, and a downward-moving pressing arc plate portion is provided above the bending touch plate.

[0020] Furthermore, a downward pressing fixed sleeve is fixedly provided on the side of the downward pressing arc plate portion, a downward pressing inner sleeve is slidably sleeved on the bottom of the downward pressing fixed sleeve portion, and a linkage top convex plate is rotatably connected to the side of the downward pressing fixed sleeve portion through a downward pressing linkage rod, and a movable sleeve portion is fixedly provided on the bottom of the linkage top convex plate.

[0021] The present invention has the following beneficial effects:

[0022] The present invention provides a group of expanded inner holes on the surface of the front support main board, and a group of toggle inner plates extending from the expanded inner hole grooves are provided in the grooves of the expanded inner holes. When the guide vane body is rotated to a fully closed state, the movable inner slide plate moves along the groove of the positioning plate and presses against the toggle inner plate, pushing the toggle inner plate into the groove of the expanded inner hole, and the rotating connecting rod connected to the expanded inner hole through the extended inner plate and the rotating connecting rod will be exposed from the side of the front support main board, and the exposed limiting cross plate portion will be inserted into the groove of the toggle inner plate on the side of the guide vane body, and then when the guide vane body is in a fully closed state, the limiting cross plate portion extends into the toggle inner plate to strengthen the positioning of the guide vane body, thereby reducing the force on the hydraulic mechanism, reducing the repeated circulation of oil in the hydraulic system, causing energy waste and increased oil temperature, and improving the service life and stability of the hydraulic system.

[0023] The present invention also drives the longitudinal pressure shaft to rotate while the guide vane body rotates, and the lower pressure arc plate portion can be moved longitudinally by rotating the movable collar portion, and the pressure shaft top convex strip connected to the top of the longitudinal pressure shaft will be stuck into the hole of the top plate positioning groove. After the guide vane body rotates to the specified opening and closing angle, the pressure shaft top convex strip extends into the hole of the top plate positioning groove to complete the enhanced positioning of the guide vane body angle, reduce the impact of water pressure on the guide vane body and then the impact on the hydraulic system, further reduce the force on the hydraulic system when the guide vane body is opened and closed, and further improve the service life of the hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the present invention;

[0026] Figure 2This is a schematic structural diagram of the connection between the bulb housing and the guide vane outer ring plate of the water turbine pump of the present invention;

[0027] Figure 3 This is an internal view of the guide vane outer ring plate of the present invention;

[0028] Figure 4 This is a side view of the guide vane linkage ring of the present invention;

[0029] Figure 5 This is a structural diagram of the connection between the guide vane body and the longitudinal pressure shaft of the present invention;

[0030] Figure 6 This is a structural diagram of the connection between the hydraulic drive component and the guide vane linkage ring of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the connection between the positioning plate and the movable inner slide plate of the present invention;

[0032] Figure 8 This is a disassembled diagram of the guide vane body and the positioning plate of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the inner plate of the present invention;

[0034] Figure 10 This is a schematic diagram of the structure of the inner hole of the present invention;

[0035] Figure 11 This is a schematic diagram of the structure of the connection between the inner plate and the limiting horizontal plate of the present invention;

[0036] Figure 12 This is a schematic diagram of the structure of the connection between the front support main plate and the arc top plate of the present invention;

[0037] Figure 13 This is a bottom view of the arc top plate of the present invention;

[0038] Figure 14 This is a schematic diagram of the structure of the connection between the guide vane front support ring plate and the arc top plate of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 1. Water wheel guard; 2. Water wheel pump bulb shell; 4. Runner; 5. Guide vane outer ring plate; 6. Guide vane front support ring plate; 7. Front support guide plate; 8. Guide vane linkage ring; 9. Linkage shaft; 10. Hydraulic drive component; 11. Drive collar; 12. Toggle connection block; 13. Toggle lever; 14. Guide vane body; 15. Guide vane shaft; 16. Positioning plate; 17. Fitting inner slide groove; 18. Plate rotation hole; 19. Plate positioning shaft; 20. Plate movable groove; 21. Moving side block; 22. Moving inner slide plate; 23. Sliding block; 24. Operating column; 25. Front support main board; 26. Open the inner hole; 27. Close the clamping mouth; 28. Move the inner plate; 30. Extend the inner plate; 31. Rotate the connecting rod; 32. Limit the horizontal plate; 33. Spring part; 34. Longitudinal pressure shaft; 35. Arc top plate; 36. Pressure shaft top convex strip; 37. Top plate positioning groove; 38. Bending touch plate; 39. Press down the arc plate; 40. Press down the fixed sleeve; 41. Press down the inner sleeve; 42. Press down the linkage rod; 43. Move the collar part; 44. Linkage top convex plate. DETAILED DESCRIPTION

[0041] In the description of the present invention, it should be understood that terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figure 1-13 As shown, the present invention is a bulb-type cross-flow water turbine pump, comprising: a water turbine guard frame 1, a water turbine pump bulb shell 2 arranged inside the water turbine guard frame 1, and a runner 4 installed at the front end of the water turbine pump bulb shell 2; wherein the water turbine guard frame 1 is a frame as a whole that is sleeved outside the water turbine pump bulb shell 2, and is assembled in multiple sections. It is installed in a machine pit inside an underwater dam, and its inlet and outlet flow channels are located in a straight line. The water inlet and outlet flow channels are both made of masonry or concrete structures. A power machine is arranged in the big end of the bulb of the water turbine pump bulb shell 2, and the end of the output main shaft of the power machine is connected to the runner 4, so that the runner 4 is placed outside the end of the water turbine pump bulb shell 2, and the water flows along the big end of the water turbine pump bulb shell 2 toward the runner 4.

[0045] A plurality of guide vane bodies 14 are arranged in an annular arrangement outside the water wheel pump bulb housing 2 and on one side of the runner 4. The guide vane bodies 14 are used to regulate the water flow. When the guide vane bodies 14 are fully extended, the maximum water flow is achieved. Conversely, when necessary, the water flow can be cut off by completely closing the guide vane bodies 14 laterally. For example, when inspecting the runner 4 or performing planned shutdowns, the cut-off water flow can avoid driving the runner 4 and ensure personnel safety.

[0046] Each set of guide vane bodies 14 are connected to the guide vane shaft 15, and the upper and lower contact points of the guide vane shaft 15 are connected in rotation. Therefore, the guide vane body 14 is rotated with the guide vane shaft 15 as the rotation point. Each set of guide vane bodies 14 has a fan-shaped structure. In order to strengthen the stability of the guide vane body 14 and the guide vane shaft 15, a front support main board 25 is provided on one side of each set of guide vane shaft 15, and the top of the front support main board 25 is fixedly provided with a guide vane front support ring plate 6. The guide vane front support ring plate 6 is an annular plate structure and is connected to the side of the guide vane front support ring plate 6. The guide vane outer ring plate 5 is fixedly connected in an integral manner, that is, the guide vane front support ring plate 6 and the guide vane outer ring plate 5 are combined to form a shell structure located outside the guide vane body 14. The bottom of the front support main plate 25 is fixedly installed with a collar, wherein the collar is fixedly arranged on the outer wall of the water turbine pump bulb shell 2, so that the top of the guide vane shaft 15 is rotatably connected to the guide vane outer ring plate 5. The surface of the guide vane front support ring plate 6 is fixedly provided with a front support guide plate 7 corresponding to the position of the front support main plate 25. The bottom of the guide vane shaft 15 is rotatably connected to the inward extension of the collar;

[0047] A space allowing water to flow through is formed between the front support main plates 25 on both sides, the collar at the bottom, and the guide vane front support ring plate 6 at the top. This space matches the shape of the guide vane body 14, and a closing and pressing opening 27 is opened on the side of the front support main plate 25. When the guide vane body 14 needs to be completely closed, the side distal end of the guide vane body 14 is attached to the groove of the closing and pressing opening 27, and the top and bottom are pressed against the guide vane front support ring plate 6 and the collar respectively, so that the space can be completely closed.

[0048] A plate rotation hole 18 is provided on the back surface of the guide vane body 14 at a height close to the center of the guide vane body 14, and the back surface is in contact with the positioning plate 16 at a height close to the center, so that one end of the positioning plate 16 is fixed with a plate positioning shaft 19 inserted into the groove of the plate rotation hole 18, so that the plate positioning shaft 19 rotates in the groove of the plate rotation hole 18, and at the same time, the positioning plate 16 end on one side of the plate positioning shaft 19 is a closed end, and the other end of the positioning plate 16 has an opening, and the surface of the positioning plate 16 is opened. A fitting inner slide groove 17 is provided, and a movable inner slide plate 22 is slidably connected in the groove of the fitting inner slide groove 17, so that a portion of the movable inner slide plate 22 is embedded in the groove of the fitting inner slide groove 17, and the embedded portion is fixed with sliding blocks 23 distributed up and down. The sliding blocks 23 are adapted to the limit grooves opened up and down in the fitting inner slide groove 17, so that the movable inner slide plate 22 can move radially in the transverse direction of the fitting inner slide groove 17. Since the guide vane body 14 rotates with the guide vane shaft 15 as the axis;

[0049] In order to ensure that the movable inner slide plate 22 can move normally in the groove of the inner slide groove 17, a longitudinally arranged plate movable groove 20 is further opened on the surface of the guide vane body 14, so that a movable side block 21 is fixed on the side of the opening of the positioning plate 16, so that the movable side block 21 can extend into the groove of the plate movable groove 20 and slide to a certain extent along the plate movable groove 20;

[0050] An upwardly extending operating column 24 is fixed to the upper end of the movable inner slide plate 22 exposed from the inner slide groove 17. When the operating column 24 is driven to move in an arc, the guide vane body 14 connected to the positioning plate 16 can be rotated.

[0051] In order to push the operating column 24 to move, a toggle rod 13 is provided on the periphery of the upper half of the operating column 24. The toggle rod 13 adopts a U-shaped structure, and the operating column 24 is clamped on the inner side of the U-shape of the toggle rod 13. The end of the toggle rod 13 is fixed with a toggle connecting block 12, and the side wall of the toggle connecting block 12 is connected to the guide vane linkage ring 8. The guide vane linkage ring 8, the toggle connecting block 12 and the toggle rod 13 form a driving mechanism. The driving mechanism can push the operating column 24 to move, and then use the operating column 24 to drive the guide vane body 14 to rotate and open and close.

[0052] The inner wall of the guide vane outer ring plate 5 is provided with a groove that allows the guide vane linkage ring 8 to move in an annular manner. The inner wall of the guide vane outer ring plate 5 is connected to a hydraulic drive member 10 via a rotating shaft. The output end of the hydraulic drive member 10 is connected to a driving collar 11. The inner wall of the driving collar 11 is rotatably connected to a linkage shaft 9 fixedly connected to the guide vane linkage ring 8. That is, the rotation of the guide vane linkage ring 8 uses the hydraulic drive member 10 as a driving force, and uses the groove on the inner wall of the guide vane outer ring plate 5 as a support point. Under the drive of the hydraulic drive member 10, the guide vane linkage ring 8 rotates.

[0053] When the guide vane linkage ring 8 rotates, it will drive the toggle connection block 12 and the toggle rod 13 to move. Since the operating column 24 can move on the U-shaped inner side of the toggle rod 13, the toggle rod 13 drives the operating column 24 to move in a circular motion while moving radially inside the toggle rod 13, thereby realizing the rotational drive of the guide vane body 14. It is worth noting that the connection between the toggle connection block 12 and the guide vane linkage ring 8 is connected in a rotational manner to avoid movement obstruction when the toggle rod 13 drives the operating column 24 to move.

[0054] After the guide vane body 14 completely cuts off the water flow, in order to reduce the pressure of the hydraulic system, an open inner hole 26 is opened on the surface of the front support main plate 25 and at a position on the side of the positioning plate 16, wherein the toggle inner plate 28 is slidably inserted into the groove of the open inner hole 26 so that the inclined portion of the toggle inner plate 28 faces the positioning plate 16. When the movable inner slide plate 22 moves to the end along the fitting inner slide groove 17, the guide vane body 14 is closed and the movable inner slide plate 22 is placed on the horizontal side of the open inner hole 26. The surface of the guide vane body 14 is flush with the surface of the front support main plate 25. That is, the movable inner slide plate 22 can continue to move forward a certain distance from the opening direction of the fitting inner slide groove 17 so that the top of the movable inner slide plate 22 can touch the inclined surface of the toggle inner plate 28.

[0055] By applying pressure to the inclined surface of the toggle inner plate 28, the toggle inner plate 28 can drive the extended inner plate 30 to retract inwardly in the hole of the expanded inner hole 26, and a vertically distributed limiting transverse plate portion 32 is provided on the side of the bottom of the extended inner plate 30, and the limiting transverse plate portion 32 is connected to the extended inner plate 30 by a rotating connecting rod 31. The two ends of the rotating connecting rod 31 are respectively rotatably connected to the extended inner plate 30 and the limiting transverse plate portion 32. Therefore, when the toggle inner plate 28 is retracted into the hole of the expanded inner hole 26, the limiting transverse plate portion 32 is The part 32 will penetrate outward from the hole opened on the side of the front support main board 25 and adapted to the limiting transverse plate part 32. At this time, since the guide vane body 14 is attached to the groove of the closed pressing mouth 27, that is, the guide vane body 14 is attached to the side of the front support main board 25, and a shifting inner plate 28 adapted to the limiting transverse plate part 32 is opened on the side of the guide vane body 14, the limiting transverse plate part 32 will be inserted into the shifting inner plate 28 to limit the guide vane body 14, thereby reducing the load of the hydraulic system and reducing the impact of high temperature on the hydraulic pressure.

[0056] A longitudinal through-hole is formed in the guide vane body 14 near the guide vane shaft 15, and a longitudinal pressure shaft 34 is slidably connected in the longitudinal through-hole. At the same time, an extension portion is provided on the surface of the extended inner plate 30 and the longitudinal pressure shaft 34. A spring portion 33 is mounted on the surface of the extension portion, so that the other end of the spring portion 33 is respectively connected to the inner wall of the expanded inner hole 26 and the inner wall of the longitudinal through-hole. When the inner slide plate 22 is disengaged from the inner plate 28, the elastic drive of the spring portion 33 exposes the groove of the expanded inner hole 26.

[0057] At the same time, when there is no external force, the longitudinal pressure shaft 34 is in an upper position, and a pressure shaft top convex strip 36 is fixed on the top of the longitudinal pressure shaft 34. At the same time, an arc top plate 35 is set on the top of the front support main board 25, so that the arc top plate 35 is placed above the longitudinal pressure shaft 34, and a top plate positioning groove 37 with an arc-shaped spacing distribution is opened at the bottom of the arc top plate 35. The distribution of the top plate positioning groove 37 is also distributed in an arc spacing with the guide vane shaft 15 as the rotation axis, that is, as the guide vane body 14 rotates, the longitudinal pressure shaft 34 is rotated. The top portion always corresponds to the arc top plate 35, so that the top convex strip 36 of the longitudinal pressure shaft 34 can be plugged into the top plate positioning groove 37, and the top of the top convex strip 36 can be inserted into the groove of the top plate positioning groove 37, that is, under the elastic action of the spring portion 33, the top convex strip 36 of the pressure shaft remains inserted into the groove of the top plate positioning groove 37, thereby limiting the rotation angle of the guide vane body 14, and can assist the hydraulic system in continuously supporting the guide vane body 14 at more opening and closing angles of the guide vane body 14.

[0058] In order to complete the downward pressure action on the longitudinal pressure shaft 34 and realize the rotational opening and closing of the guide vane body 14, a movable collar portion 43 of an annular structure is provided on the surface of the water turbine pump bulb shell 2 and on one side of the inward extension of the collar, and a track groove is also provided on the outside of the water turbine pump bulb shell 2 to allow the movable collar portion 43 to rotate, and a linkage top convex plate 44 is fixedly provided on the top of the movable collar portion 43, and the top of the linkage top convex plate 44 is connected to the downward pressure fixed collar plate 40 through a downward pressure linkage rod 42, the top of the downward pressure fixed collar plate 40 is fixedly connected to the downward pressure arc plate portion 39, and the two ends of the downward pressure linkage rod 42 are respectively rotatably connected to the linkage top convex plate 44 and the downward pressure fixed collar plate 40;

[0059] When the collar portion 43 is rotated and moved, the downward pressure of the fixed collar 40 is provided by the traction of the downward pressure linkage rod 42, so that the downward pressure arc plate 39, which was originally not in contact with the bending touch plate 38, is pressed downward. The downward pressure of the downward pressure arc plate 39 can drag the bending touch plate 38 and the longitudinal pressure shaft 34 downward. In order to improve the stability of the longitudinal movement of the fixed collar 40, a downward pressure inner collar 41 is slidably provided inside the fixed collar 40 so that the bottom of the downward pressure inner collar 41 is fixed to the surface of the inward extension of the collar.

[0060] The bending contact plate 38 is fixed to the bottom of the longitudinal pressure shaft 34. The bending contact plate 38 has an overall "7"-shaped structure. This design allows the downward pressure arc plate 39 to maintain contact with the rod of the bending contact plate 38 as the guide vane body 14 rotates. Because the bending contact plate 38 has both a horizontal and a vertical rod, the downward pressure arc plate 39 maintains contact with the rod of the bending contact plate 38. Furthermore, the downward pressure arc plate 39 is positioned below the guide vane body 14, ensuring that the normal opening and closing rotation of the guide vane body 14 is not affected. The hydraulic system used to drive the rotation of the movable collar portion 43 is the same as that used in the hydraulic drive element 10, employing a conventional hydraulic system.

[0061] Working principle: The bulb-type tubular turbine is based on the turbine guard frame 1, and the turbine pump bulb shell 2 is placed in the turbine guard frame 1. The turbine guard frame 1 is designed in multiple sections, and the internal space of the front and rear sections gradually decreases, which is adapted to the overall shape of the turbine pump bulb shell 2. In order to improve stability, multiple sets of brackets are set up at the bottom of the turbine pump bulb shell 2 and installed in the machine pit inside the underwater dam. The water inlet and outlet flow channels are both made of masonry or concrete structures. The water flows along the large end of the turbine pump bulb shell 2 into the turbine guard frame. 1 cavity and is discharged to one side from the small opening of the water wheel guard frame 1, wherein the inner cavity of the entire water wheel guard frame 1 is divided into left and right sides by using the outer ring plate 5 of the guide vane, so that the annular guide vane body 14 in the outer ring plate 5 is used to block the space on both sides. The annular guide vane body 14 can rotate synchronously, and after rotation, the space on both sides of the guide vane outer ring plate 5 can be completely isolated. Conversely, when water needs to flow, the guide vane body 14 is rotated to an inclined position, so that the water flow is discharged along the outlet released by the guide vane body 14.

[0062] In order to realize the synchronous rotation of the guide vane body 14, a guide vane linkage ring 8 of an annular structure is provided, and the guide vane linkage ring 8 is driven by the hydraulic drive part 10. When the guide vane linkage ring 8 rotates, it drives the toggle connection block 12 and the toggle rod 13 to move. Since the operating column 24 can move on the U-shaped inner side of the toggle rod 13, the operating column 24 can be driven by the toggle rod 13 to make the circular motion and at the same time move radially inside the toggle rod 13, thereby realizing the rotation drive of the guide vane body 14. In order to realize that the movement of the operating column 24 can drive the guide vane body 14 to rotate, the bottom of the operating column 24 is connected to the movable inner slide 22, so that the movable inner slide 22 can move radially in the groove of the fitting inner slide 17. Since the guide vane body 14 rotates with the guide vane shaft 15 as the axis, when the inner sliding plate 22 moves, the guide vane body 14 rotates, thereby realizing the synchronous rotation of multiple groups of guide vane bodies 14. After the guide vane body 14 rotates to the closed position, the inner sliding plate 22 can continue to move forward in the groove 17, and the inner plate 28 originally exposed in the groove 26, as the inner sliding plate 22 continues to move, pushes the inner plate 28 into the expanded inner hole 26, and the limiting horizontal plate portion 32 connected to the expanded inner hole 26 moves outward synchronously, and finally the front end of 32 is clamped into the inner plate 28 on the side of the guide vane body 14, and the guide vane body 14 is clamped in the closed position by the mechanical structure, which can reduce the load of the hydraulic system.

[0063] When 14 is rotated to the expanded position, the stability of 14 can be further enhanced. In the absence of external force, the longitudinal pressure shaft 34 is in the upper position, that is, as the guide vane body 14 rotates, the top of the longitudinal pressure shaft 34 always corresponds to the arc top plate 35, so that the pressure shaft top convex strip 36 at the top of the longitudinal pressure shaft 34 can maintain a plug-in connection with the top plate positioning groove 37, and the top of the pressure shaft top convex strip 36 can be snapped into the groove of the top plate positioning groove 37, that is, under the elastic action of the spring part 33, the pressure shaft top convex strip 36 remains snapped into the groove of the top plate positioning groove 37, thereby limiting the rotation angle of the guide vane body 14, and can assist the hydraulic system in continuously supporting the guide vane body 14 at more opening and closing angles of the guide vane body 14.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0065] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A bulb-type tubular turbine pump, comprising: A water wheel protection frame (1), a water wheel pump bulb shell (2) arranged inside the water wheel protection frame (1), and a runner (4) installed at the front end of the water wheel pump bulb shell (2); It is characterized by further comprising: The guide vane body (14) is annularly distributed outside the water wheel pump bulb shell (2), and one end of the guide vane body (14) is fixedly provided with a guide vane rotating shaft (15), the central portion of the guide vane body (14) is attached with a horizontally arranged positioning plate (16), and a movable inner slide plate (22) is slidably connected in the groove of the positioning plate (16); An operating column (24) is fixedly mounted on the top of the movable inner slide plate (22), and a driving mechanism is provided on the operating column (24) for driving the operating column (24) to move laterally along one side of the positioning plate (16); A front support main plate (25) is mounted on one side of the guide vane shaft (15), and a support inner hole (26) is provided on the surface of the front support main plate (25), and a sliding connection is made in the groove of the support inner hole (26) with a toggle inner plate (28), and the surface of the toggle inner plate (28) is connected to a limited horizontal plate portion (32) through an extended inner plate (30) and a rotating connecting rod (31), and a toggle inner plate (28) is provided on the side of the guide vane body (14) and is plugged and adapted to the limited horizontal plate portion (32); A guide vane outer sleeve ring plate (5) is fixedly provided on the inner wall of the water wheel protection frame (1) and at the periphery of the guide vane main body (14), and a guide vane front support ring plate (6) is fixedly provided at the front end of the guide vane front support ring plate (5), and a front support guide plate (7) corresponding to the position of the front support main plate (25) is fixedly provided on the surface of the guide vane front support ring plate (6); a plate rotation hole (18) is provided on the surface of the guide vane main body (14), and a plate positioning shaft (19) is fixedly provided at one end of the positioning plate (16) and rotated along the plate rotation hole (18); a fitting inner slide groove (17) is provided on the surface of the positioning plate (16) for allowing the movable inner slide plate (22) to penetrate therein, and a fitting inner slide groove (17) is fixedly provided on the surface of the movable inner slide plate (22) A sliding block (23) slides in the groove; the surface of the guide vane body (14) is provided with a plate movable groove (20) located on one side of the plate rotation hole (18); the surface of the positioning plate (16) is fixed with a movable side block (21) that slides in the groove along the plate movable groove (20); the top of the open inner hole (26) is fixed with an arc top plate (35), the guide vane body (14) is provided with a longitudinal through hole at a position close to the guide vane rotation shaft (15), and a longitudinal pressure shaft (34) is slidably connected in the longitudinal through hole, the bottom of the arc top plate (35) is provided with arc-shaped top plate positioning grooves (37) distributed at equal intervals, and the top of the longitudinal pressure shaft (34) is fixed with a pressure shaft top convex strip (36) plugged into the top plate positioning groove (37).

2. A bulb-type tubular turbine pump according to claim 1, characterized in that: A closed pressing opening (27) is provided on the side of the front support main plate (25) to allow the guide vane body (14) to be inserted sideways. The driving mechanism includes a toggle connection block (12), a toggle rod (13), and a guide vane linkage ring (8).

3. The bulb-type tubular turbine pump according to claim 1, characterized in that: The inner wall of the guide vane outer sleeve ring plate (5) is provided with a groove for allowing the guide vane linkage ring (8) to move in an annular manner. The inner wall of the guide vane outer sleeve ring plate (5) is connected to a hydraulic drive component (10) via a rotating shaft. The output end of the hydraulic drive component (10) is connected to a driving sleeve ring (11). The inner wall of the driving sleeve ring (11) is rotatably connected to a linkage shaft (9) fixedly connected to the guide vane linkage ring (8).

4. The bulb-type tubular turbine pump according to claim 1, characterized in that: A convex plate extending to one side is fixedly provided on the surface of the extended inner plate (30), and a plurality of spring portions (33) are connected to the surface of the convex plate. The other end of the spring portion (33) is connected to the inner wall of the cavity that opens the inner hole (26), and the inclined surface of the inner plate (28) is moved toward the front end of the positioning plate (16).

5. The bulb-type tubular turbine pump according to claim 1, characterized in that: A bending touch plate (38) is fixedly provided on the end surface of the longitudinal pressure shaft (34) extending downward through the longitudinal through hole. The bending touch plate (38) adopts an arc-shaped plate structure. A downwardly movable downward pressing arc plate portion (39) is provided above the bending touch plate (38).

6. The bulb-type tubular turbine pump according to claim 5, characterized in that: A downward pressing fixed sleeve plate (40) is fixedly provided on the side surface of the downward pressing arc plate portion (39), a downward pressing inner sleeve plate (41) is slidably sleeved on the bottom of the downward pressing fixed sleeve plate (40), a linkage top convex plate (44) is rotatably connected to the side surface of the downward pressing fixed sleeve plate (40) through a downward pressing linkage rod (42), and a movable collar portion (43) is fixedly provided on the bottom of the linkage top convex plate (44).

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