Main shaft threading pipe of wind turbine generator and wind turbine generator

Abstract

The main shaft threading pipe comprises a pipe body penetrating through a main shaft in the axial direction, a front connecting structure connected with the front end face of the main shaft and a rear connecting structure connected with the rear end face of the main shaft, and the rear connecting structure is rigidly and fixedly connected with the rear end of the pipe body. The front connecting structure is flexibly and detachably connected with the front end of the pipe body. According to the scheme, follow-up treatment work caused by fatigue fracture at the joint of the spindle threading pipe and the spindle can be avoided, the product stability is improved, and the product maintenance cost is reduced; and the processing and mounting process requirements of the main shaft threading pipe can be reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and more specifically to a main shaft conduit for a wind turbine and a wind turbine. Background Technology

[0002] Against the backdrop of continuous advancements in wind power technology, and with the increasing capacity of wind turbine units, the load on the main shaft is growing daily, placing higher demands on the reliability and maintenance costs of the main shaft conduit. Traditional rigid-connected main shaft conduits suffer from fatigue fracture at the connection point due to the increasing deflection of the main shaft with the external load, as the conduit is rigidly connected to the main shaft and subjected to a constant alternating external load. Utility Model Content

[0003] The purpose of this invention is to provide a spindle conduit to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model proposes a spindle conduit, comprising a tube body extending axially through the spindle, a front connection structure connected to the front end face of the spindle, and a rear connection structure connected to the rear end face of the spindle. The rear connection structure is rigidly fixedly connected to the rear end of the tube body, and the front connection structure is flexibly and detachably connected to the front end of the tube body.

[0005] Furthermore, the front connection structure includes a flexible member that matches the outer peripheral contour of the tube body, a fixing member for accommodating the flexible member, and a connecting member for connecting to the front end face of the spindle.

[0006] Furthermore, the fixing member includes a fixing seat composed of two semi-annular seats, baffles welded to the front and rear ends of the seats respectively, and a mating plate extending radially outward from the open end of the seats.

[0007] Furthermore, the connector includes two connecting brackets symmetrically distributed about the central axis of the spindle. One end of each connecting bracket is connected to the front end face of the spindle, and the other end is connected to the two seats of the fixed base respectively.

[0008] Furthermore, the connecting bracket is provided with an elongated hole and is connected to the front end face of the spindle by bolts.

[0009] Furthermore, the flexible element includes two semi-annular rubber blocks respectively arranged in the two seats of the fixed seat.

[0010] This utility model proposes a wind turbine generator set, which includes the aforementioned main shaft conduit.

[0011] By setting a flexible and detachable connection between the front end of the spindle conduit and the front connection structure connecting the spindle, the subsequent processing work caused by fatigue fracture at the connection between the spindle conduit and the spindle can be avoided, thereby improving product stability and reducing product maintenance costs. Moreover, it can reduce the processing and installation requirements of the spindle conduit and improve work efficiency. Attached Figure Description

[0012] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, explaining the apparatus and principles of the invention. In the drawings,

[0013] Figure 1 This is a schematic diagram of the assembly of the spindle conduit in the spindle according to an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall structure of the spindle conduit according to an embodiment of the present utility model;

[0015] Figure 3 This is an exploded view of the front end of the spindle conduit in an embodiment of the present invention.

[0016] Figure 4 This is a cross-sectional schematic diagram of the front end of the spindle conduit in an embodiment of the present invention. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely preferred embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] It should be understood that, unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of the invention. Terms such as “part” and “component” appearing herein may refer to a single part or a combination of multiple parts. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. Ordinal numbers such as “first” and “second” are merely identifiers and have no other meaning, such as a specific order. Moreover, for example, the term “first component” does not imply the existence of a “second component,” and the term “second component” does not imply the existence of a “first component.” When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "center," "vertical," "horizontal," and similar expressions are for illustrative purposes only and are not intended to be limiting. The terms "connect," "install," "link," and "set" 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. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. Features described in one embodiment may be applied alone or in combination with other features in another embodiment, unless that feature is not applicable in that other embodiment or is otherwise specified.

[0019] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0020] This utility model provides a main shaft conduit for a wind turbine, such as... Figure 1-4As shown, the main spindle conduit 1 includes a tube body 11 extending axially through the main spindle 2, a front connecting structure 12 connected to the front end face of the main spindle 2, and a rear connecting structure 13 connected to the rear end face of the main spindle 2. The rear connecting structure 13 is rigidly fixed to the rear end of the tube body 11, while the front connecting structure 12 is flexibly and detachably connected to the front end of the tube body 11. The front connecting structure 12 may include a flexible component matching the outer circumferential contour of the tube body 11, a fixing component for accommodating the flexible component, and a connecting component for connecting to the front end face of the main spindle 2. The flexible component positioned between the front end of the main spindle conduit and the connecting component can buffer the deflection deformation of the main spindle due to external loads, thereby preventing damage to the main spindle conduit from long-term exposure to alternating external loads and extending the service life of the conduit.

[0021] like Figure 2 and Figure 3 As shown, the fixing component includes a fixing seat composed of two semi-annular bases 121, baffles 122 welded to the front and rear ends of the bases 121 respectively, and a mating plate 123 extending radially outward from the open end of the bases 121. The annular fixing seat and the baffles 122 at its front and rear ends form a space to accommodate the flexible component, thereby restricting the degree of freedom of the flexible component to move radially and axially, and also providing protection for the flexible component. The flexible component may include two semi-circular rubber blocks 124 respectively arranged in the two bases 121 of the fixing seat for easy installation. The connecting component includes two connecting brackets 125 symmetrically distributed about the central axis of the spindle 2. One end of each connecting bracket 125 is connected to the front end face of the spindle 2, and the other end is connected to the two bases 121 of the fixing seat respectively, so that the front connecting structure 12 forms two parts symmetrically distributed about the central axis of the spindle 2. The mating plate 123 is provided with bolt connection holes. The mating plates 123 of the two seats are connected by bolts to form a complete annular fixing seat, which presses the rubber blocks tightly against the outer circumferential surface of the front end of the tube 11, so that the front end of the spindle conduit is held tightly by the two rubber blocks. To enhance the holding effect, the circumferential dimension of the rubber block 124 before installation can be set to be slightly larger than the circumferential dimension of the seat 121, so that the fixing seat formed by the connection of the two seats 121 presses the two rubber blocks tightly against the outer circumferential surface of the front end of the tube 11. Preferably, the outer end of the connecting bracket 125 is provided with an elongated hole to facilitate bolt connection with the front end face of the spindle 2, reduce the processing and installation process requirements of the spindle conduit, and improve work efficiency.

[0022] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A main shaft conduit (1) for a wind turbine generator, characterized in that, It includes a tube (11) that runs through the main shaft (2) along the axial direction, a front connection structure (12) connected to the front end face of the main shaft (2) and a rear connection structure (13) connected to the rear end face of the main shaft (2). The rear connection structure (13) is rigidly fixedly connected to the rear end of the tube (11), and the front connection structure (12) is flexibly and detachably connected to the front end of the tube (11).

2. The spindle conduit according to claim 1, characterized in that, The front connection structure (12) includes a flexible member that matches the outer periphery of the tube body (11), a fixing member for accommodating the flexible member, and a connector for connecting to the front end face of the main shaft (2).

3. The spindle conduit according to claim 2, characterized in that, The fastener includes a fixing seat consisting of two semi-circular seats (121), baffles (122) welded to the front and rear ends of the seats (121) respectively, and a mating plate (123) extending radially outward from the open end of the seats (121).

4. The spindle conduit according to claim 3, characterized in that, The connector includes two connecting brackets (125) symmetrically distributed about the central axis of the main shaft (2). One end of the two connecting brackets is connected to the front end face of the main shaft (2), and the other end is connected to the two seats (121) of the fixed seat respectively.

5. The spindle conduit according to claim 4, characterized in that, The connecting bracket is provided with an elongated hole and is connected to the front end face of the main shaft (2) by bolts.

6. The spindle conduit according to claim 3, characterized in that, The flexible component includes two semi-annular rubber blocks (124) respectively arranged in the two seats (121) of the fixed base.

7. A wind turbine generator set, characterized in that, The wind turbine unit includes the main shaft conduit as described in any one of claims 1-6.

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