Axial flow variable pitch unit drive and axial flow variable pitch unit

Abstract

The utility model relates to a kind of axial flow variable pitch unit driving device and axial flow variable pitch unit, belong to axial flow variable pitch unit technical field, the axial flow variable pitch unit driving device includes reduction mechanism, gear set and shaft coupling, the reduction mechanism is connected through the gear set and the shaft coupling, the shaft coupling is connected with the upper end portion of the rotating shaft;The gear set includes pinion and large gear of different diameters, the pinion and the large gear are engaged arrangement;The pinion is connected with the output shaft of the reduction mechanism, and the large gear is connected with the shaft coupling.The utility model realizes the driving of the rotating shaft of axial flow variable pitch unit, realizes the adjustment of rotating shaft, avoids the interference to the operating oil pipe in rotating shaft;The utility model does not need manual adjustment rotating shaft by artificial, improves work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of axial-flow propeller units, and particularly relates to an axial-flow propeller unit drive device and an axial-flow propeller unit. Background Technology

[0002] Axial-flow propeller turbine units are vertically rotating devices with their shaft centerline perpendicular to the ground plane. Their shaft structure mainly includes a hollow shaft and operating oil pipes running through it. The operating oil pipes are the longest axial component of the axial-flow propeller turbine unit, extending from the turbine blade adjustment chamber at the bottom of the unit, through the turbine shaft, generator shaft, and upper shaft, to the hydraulic oil supply device at the very top of the unit, used to adjust the angle of the turbine blades.

[0003] The operating hose is the actuating component for the axial propeller function, and its center runout directly affects the effective adjustment of the axial propeller function. Its radial runout should not exceed 0.02 mm per meter in the axial direction. Therefore, when measuring the axial runout of the operating hose, it is required that there be no interference in either the axial or radial direction. Based on accurate data, it is easy to adjust it in one step, avoiding unnecessary work.

[0004] Therefore, existing axial-flow propeller turbine units require shaft system adjustments before formal power generation and operation, but this has always been achieved manually. This involves manually rotating the hollow shaft to detect interference from the shaft system with the operating hydraulic lines. Manual operation leads to unstable drive speeds and low efficiency.

[0005] Therefore, it is necessary to invent a drive device for an axial-flow propeller turbine and an axial-flow propeller turbine to solve the problems of instability and low operating efficiency caused by manual adjustment of the shaft system in existing axial-flow propeller turbines. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an axial-flow propeller unit drive device and an axial-flow propeller unit that can stably drive the shaft system to rotate and has high working efficiency.

[0007] A first aspect of this utility model provides a drive device for an axial-flow propeller turbine unit, used to drive the shaft of the axial-flow propeller turbine unit to rotate, comprising:

[0008] The equipment includes a reduction mechanism, a gear set, and a coupling, wherein the reduction mechanism is connected via the gear set and the coupling, and the coupling is connected to the upper end of the rotating shaft.

[0009] The gear set includes a small gear and a large gear with different diameters, and the small gear and the large gear are meshed together; the small gear is connected to the output shaft of the reduction mechanism, and the large gear is connected to the coupling.

[0010] This invention connects a coupling driven by a reduction gear to the upper end of an axial-flow propeller unit, enabling the slow rotation of the unit's shaft without manual operation, thereby improving work efficiency.

[0011] Furthermore, the large gear is connected to the coupling via a key and a slot.

[0012] Furthermore, the axial-flow propeller unit includes a unit fixing part, and the rotating shaft is vertically arranged inside the unit fixing part; the reduction mechanism is located at the upper end of the unit fixing part.

[0013] Furthermore, it also includes: a bracket, which is located at the top of the unit fixing part, and the deceleration mechanism is located on the bracket.

[0014] Furthermore, the top of the bracket is higher than the top of the rotating shaft.

[0015] Furthermore, it also includes: a transition short shaft, which is annular in shape, fixed to the upper end of the rotating shaft, and connected to the coupling.

[0016] Furthermore, the transition short shaft is configured as a variable diameter structure along the axial direction, or as a split structure in the radial or axial direction.

[0017] Furthermore, it also includes: a housing and a lever arm, the housing and the lever arm forming a cavity, the gear set being disposed within the cavity; the housing being disposed on the upper end of the support, and the deceleration mechanism being disposed on the lever arm.

[0018] In a second aspect, this utility model provides an axial-flow propeller turbine unit, including the axial-flow propeller turbine unit drive device as described above.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention incorporates a reduction gear mechanism, gear set, and coupling on a traditional axial-flow propeller unit to drive and adjust the unit's shaft, thus avoiding interference with the operating oil pipes inside the shaft. Furthermore, this invention eliminates the need for manual shaft adjustment, thereby improving work efficiency.

[0021] This invention can be used on traditional equipment without the need for additional openings or drilling, effectively solving spatial constraints, realizing the speed-increasing power drive of the deceleration mechanism, completely freeing up manpower, ensuring balanced drive of the entire equipment, stable speed, no axial and radial interference, resulting in high measurement accuracy, gaining more power generation time, and high work efficiency. Attached Figure Description

[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same components. Obviously, the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings.

[0023] Figure 1 This is a schematic diagram of the configuration structure of the axial-flow propeller unit according to an embodiment of the present utility model;

[0024] Figure 2 This is a partial schematic diagram of the assembly structure at the upper end of the axial-flow propeller unit according to an embodiment of the present invention.

[0025] Figure label:

[0026] 1. Transition short shaft; 2. Coupling; 3. Large gear; 4. Lever arm; 5. Housing; 6. Output shaft; 7. Small gear; 8. Key; 9. Groove; 10. Reduction mechanism; 11. Bracket; 12. Upper end; 13. Operating oil pipe; 14. Guide bearing; 15. Generator rotor; 16. Thrust disc; 17. Thrust bearing; 18. Water turbine; 19. Unit mounting part. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of systems consistent with some aspects of this invention as detailed in the appended claims.

[0031] This utility model proposes a drive device for an axial-flow propeller turbine and an axial-flow propeller turbine, which solves the problem that the space for assembling the reduction mechanism on the upper shaft of the existing axial-flow propeller turbine is small, making operation very inconvenient and affecting installation efficiency.

[0032] This utility model provides a drive device for an axial-flow propeller turbine unit, used to drive the shaft of the axial-flow propeller turbine unit to rotate, comprising:

[0033] The gearbox 10, gear set, and coupling 2 are connected together. The gearbox 10 is connected to the gear set and the coupling 2. The coupling 2 is connected to the upper end 12 of the rotating shaft.

[0034] The gear set includes a small gear 7 and a large gear 3 with different diameters, and the small gear 7 and the large gear 3 are meshed; the small gear 7 is connected to the output shaft 6 of the reduction mechanism 10, and the large gear 3 is connected to the coupling 2.

[0035] This invention connects a coupling 2 driven by a reduction mechanism 10 to the upper end 12 of the axial-flow propeller unit, thereby enabling the slow rotation of the shaft of the axial-flow propeller unit without manual operation, thus improving work efficiency.

[0036] See Figure 1 and Figure 2 As shown, this utility model connects a coupling 2 to the upper end 12 of the shaft of the axial-flow propeller engine. The coupling 2 is connected to the reduction mechanism 10 via a gear set. By starting the reduction mechanism 10, the shaft can be rotated and adjusted. The reduction mechanism 10 itself has a low speed. The speed is further reduced by the gear set that meshes the small gear 7 and the large gear 3, so that the rotation speed of the shaft can reach a lower state, even reaching 20-30 minutes per revolution. This makes it convenient to adjust the operating oil pipe in the shaft and avoids axial or radial interference between the two.

[0037] Furthermore, the large gear 3 is connected to the coupling 2 via key 8 and groove 9.

[0038] The large gear 3 is connected to the coupling 2 through the structure of key 8 and groove 9. The structure is simple and the operation is stable, avoiding the problem of unstable speed caused by traditional manual rotation.

[0039] Furthermore, the axial-flow propeller unit includes a unit fixing part 19, and the rotating shaft is vertically arranged inside the unit fixing part 19; the reduction mechanism 10 is located at the upper end of the unit fixing part 19.

[0040] The unit fixing part 19 includes structural components such as the outer shell and base of the axial propeller unit. The rotating shaft is vertically set inside the unit fixing part 19, such as the outer shell. In this case, the reduction mechanism 10 is set at the upper end of the outer shell, which can reduce transmission components, such as shafts, and realize the adjustment of the rotating shaft.

[0041] Furthermore, the axial-flow propeller turbine drive unit also includes: a bracket 11, which is disposed at the top of the turbine fixing part 19, and the reduction mechanism 10 is disposed on the bracket 11. More preferably, the top of the bracket 11 is higher than the top of the rotating shaft.

[0042] A bracket 11 is installed on the top of the unit fixing part 19 to increase the operating space for the speed reduction mechanism 10 to be installed on the unit fixing part 19, so that the operator can assemble it.

[0043] like Figure 1 and Figure 2 As shown, in the axial-flow propeller unit drive device of this utility model, the reducer is mounted on the bracket 11, and the bracket 11 is fixed on the unit fixing part 19 of the axial-flow propeller. The rotating shaft is located inside the unit fixing part 19, so that the reducer mechanism 10 can only drive the rotating shaft to rotate by relying on the transition short shaft 1.

[0044] Furthermore, the axial-flow propeller unit drive device also includes: a transition short shaft 1, which is annular, fixed to the upper end of the rotating shaft, and connected to the coupling 2.

[0045] The upper end 12 of the shaft of the axial-flow propeller motor is connected to a drive mechanism including a reduction mechanism 10 and a gear set to drive the shaft to rotate. However, since the upper end of the shaft is lower than the top of the frame, the assembly clearance of the drive mechanism is too small, increasing the difficulty of installation and operation. This invention provides a transition short shaft 1 at the upper end of the shaft, which is equivalent to extending the upper end 12. Therefore, the drive mechanism can be connected to the upper part of the transition short shaft 1 to achieve the purpose of driving the shaft to rotate. At the same time, the setting of the transition short shaft 1 raises the drive mechanism, increases the installation space at the bottom, facilitates operation, and thus greatly improves the installation efficiency.

[0046] The transition short shaft 1 adopts the same hollow shaft structure as the rotating shaft, which facilitates the installation of the operating oil pipe 13. The shape and structure of the transition short shaft 1 can be adjusted according to the structure of the operating oil pipe 13, and it has high adaptability, including the possibility that the transition short shaft 1 can be set with unequal diameters or even segmented.

[0047] The diameter of the transition short shaft 1 can be larger than the diameter of the rotating shaft.

[0048] The transition short shaft 1 can be configured such that its diameter is larger than that of the rotating shaft. This increases the movement space of the operating oil pipe 13 without affecting the rotation of the rotating shaft and the transition short shaft 1. Here, the pipe diameter refers to the inner diameter of the transition short shaft 1.

[0049] Alternatively, depending on the usage requirements, the diameter of the transition short shaft 1 can be set to be smaller than the diameter of the rotating shaft.

[0050] Furthermore, the transition short shaft 1 is configured as a variable diameter structure or a split structure along the axial direction.

[0051] In the specific structural settings of the transition short shaft 1, a variable diameter structure can be adopted, including a uniform variable diameter structure, such as gradually expanding, gradually contracting, or stepped; or it can be set as a non-uniform variable diameter structure, such as a combination of gradually expanding and contracting, or a non-uniform stepped structure.

[0052] The transition short shaft 1 can also be configured as a split structure, including axial segments or radially segmented structures, and then connected by bolts.

[0053] The aforementioned transition short shaft 1 is designed to adapt to different operating oil pipes 13 and avoid interfering with any movement of the operating oil pipe 13.

[0054] The transition short shaft 1 can also be designed in the simplest structural form, such as... Figure 2 As shown, this is a structure with a straight axis.

[0055] The transition short shaft 1 and the operating oil pipe 13 located in between are spaced apart, which effectively limits the center swing of the operating oil pipe 13, directly affecting the effective adjustment of the axial propeller function. This clearance setting facilitates adjustment and avoids unnecessary work.

[0056] Furthermore, the axial-flow propeller unit drive device also includes a housing 5 and a lever arm 4, the housing 5 and the lever arm 4 forming a cavity, and the gear set is disposed in the cavity; the housing 5 is disposed on the upper end of the bracket 11, and the reduction mechanism 10 is disposed on the lever arm 4.

[0057] For axial-flow propeller units, the top of the shaft is usually sealed with a flange or other structure. This utility model adopts a housing 5 combined with a lever arm 4 combined structure set at the upper end 12 of the shaft to facilitate the assembly of the gear set. Specifically, the upper end face of the bracket 11 is connected to the housing 5, the large gear 3 is installed inside the housing 5, and the housing 5 and the lever arm 4 are connected to fix the reduction mechanism 10.

[0058] The overall driving action relationship is as follows:

[0059] The reducer outputs torque, which is transmitted to the large gear 3 through the small gear 7. The large gear 3 transmits the torque to the coupling 2 through the key 8 and the groove 9. The coupling 2 transmits the torque to the upper shaft 12 of the unit through the transition short shaft 1, thereby driving the unit's shaft system to rotate.

[0060] Throughout the entire driving process, there is no interference with the operation of oil pipe 13.

[0061] In a second aspect, this utility model provides an axial-flow propeller turbine unit, including the axial-flow propeller turbine unit drive device as described above.

[0062] See Figure 1 As shown, this utility model's axial-flow propeller turbine unit is vertically arranged and includes a water turbine 18 at the bottom. A generator rotor 15 is mounted on the shaft of the water turbine 18. The generator rotor 15 is connected to the unit's fixed part 19 via a matching thrust plate 16 and thrust bearing 17. A guide bearing 14 is provided on the upper outer periphery of the water turbine 18 shaft and is located on the unit's fixed part 19. The upper shaft 12 is the top of the water turbine 18 shaft. The water turbine 18 rotates under the impact of water flow, driving the generator rotor 15 to rotate, thus realizing the power generation function.

[0063] The operating oil pipe 13 is inserted into the shaft of the water turbine 18. The angle of the blades of the water turbine 18 is adjusted according to the water flow speed to effectively utilize the kinetic energy of the water flow to convert it into the kinetic energy of the water turbine 18 rotation. The operating oil pipe 13 extends out of the upper end 12 of the top of the water turbine 18 so that the exposed operating oil pipe 13 can be connected to equipment such as a hydraulic oil supply device. The angle of the lower water turbine 18 can be changed by adjusting the operating oil pipe 13.

[0064] The aforementioned unit mounting section 19 may include the entire unit's outer casing and is a fixed structure. The shaft of the turbine 18 is the rotation shaft of the entire unit.

[0065] This utility model of axial-flow propeller unit has a transition short shaft 1 set above the upper end 12. Combined with the support 11 above the outer shell, it can increase the assembly space of the drive mechanism and support the upper end 12 and the transition short shaft 1, thereby reducing the stress on the guide plate 14.

[0066] This utility model of an axial-flow propeller turbine unit adopts the aforementioned axial-flow propeller turbine unit drive device. This type of drive, which relies on a reducer to increase torque, only causes the shaft to rotate without translation, thus freeing up the thrust bearing 17 and guide bearing 14 located below the shaft. When the shaft system of the entire axial-flow propeller turbine unit is adjusted, the operating oil pipe 13 can participate in the rotation. The improvement of this utility model is that by utilizing the existing equipment connection relationship, without openings or drilling holes, the reduction torque increase drive can achieve a fully effective drive.

[0067] The structural advantages of this utility model:

[0068] 1. Based on the existing equipment connection conditions, no additional openings, drilling, or modifications are required, and no changes are made to the original equipment.

[0069] 2. The device configuration and operation of oil pipe 13 do not interfere with each other.

[0070] 3. Optimize interface conditions to effectively resolve space constraints.

[0071] 4. Achieve deceleration and increased distance power drive, completely freeing up human labor.

[0072] 5. The drive is balanced, the speed is stable, there is no interference in the axial and radial directions, and the measurement accuracy is high.

[0073] 6. Gain more time for power generation and increase work efficiency.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and not to limit it. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drive device for an axial-flow propeller turbine unit, used to drive the shaft of the axial-flow propeller turbine unit to rotate, characterized in that, include: The gearbox (10), gear set and coupling (2) are connected, the gearbox (10) is connected to the gear set and the coupling (2), and the coupling (2) is connected to the upper end (12) of the rotating shaft; The gear set includes a small gear (7) and a large gear (3) of different diameters, and the small gear (7) and the large gear (3) are meshed; the small gear (7) is connected to the output shaft of the reduction mechanism (10), and the large gear (3) is connected to the coupling (2).

2. The axial-flow propeller turbine drive device according to claim 1, characterized in that, The large gear (3) is connected to the coupling (2) via a key (8) and a groove (9).

3. The axial-flow propeller turbine drive device according to claim 1 or 2, characterized in that, The axial-flow propeller unit includes a unit fixing part (19), and the rotating shaft is vertically arranged in the unit fixing part (19); the reduction mechanism (10) is located at the upper end of the unit fixing part (19).

4. The axial-flow propeller turbine drive device according to claim 3, characterized in that, Also includes: The bracket (11) is located at the top of the unit fixing part (19), and the deceleration mechanism (10) is located on the bracket (11).

5. The axial-flow propeller turbine drive device according to claim 4, characterized in that, The top of the bracket (11) is higher than the top of the rotating shaft.

6. The axial-flow propeller turbine drive device according to claim 5, characterized in that, Also includes: Transition short shaft (1), the transition short shaft (1) is set in the shape of a ring, fixed at the upper end of the rotating shaft, and connected to the coupling (2).

7. The axial-flow propeller turbine drive device according to claim 6, characterized in that, The transition short shaft (1) is configured as a variable diameter structure along the axial direction, or as a split structure in the radial or axial direction.

8. The axial-flow propeller turbine drive device according to claim 4 or 5, characterized in that, Also includes: The housing (5) and the lever arm (4) form a cavity, and the gear set is located in the cavity; the housing (5) is located on the upper end of the bracket (11), and the deceleration mechanism (10) is located on the lever arm (4).

9. An axial-flow propeller turbine unit, characterized in that, Includes the axial-flow propeller unit drive device as described in any one of claims 1-8.

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