Coupler and wind generating set comprising same

Abstract

The utility model discloses a coupling and a wind generating set comprising the same, the coupling comprises a gear box side expansion sleeve assembly, a generator side expansion sleeve assembly, an intermediate assembly, a brake disc, a generator side connecting flange and two diaphragm assemblies, one side of each diaphragm assembly is connected to the two ends of the intermediate assembly respectively, and the other side of each diaphragm assembly is connected to the other side of the intermediate assembly; the other sides of the two diaphragm assemblies are connected to the brake disc and the generator side connecting flange respectively, the gearbox side expansion sleeve assembly is connected to the side face, back to the diaphragm assemblies, in the brake disc, and the generator side expansion sleeve assembly is connected to the side face, back to the diaphragm assemblies, in the generator side connecting flange. The wind generating set comprises the coupling. Torque is transmitted for a system through the intermediate assembly, effective insulation is carried out, a certain deformation compensation function is provided for the coupler through the diaphragm assembly, and therefore the wind generating set can operate more reliably. Meanwhile, the device can work for a long time in a severe environment, and is high in reliability, safe, stable and easy to operate and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a coupling and a wind power generator set comprising the coupling. Background Art

[0002] As a new type of clean energy, wind power generation has made great contributions to the realization of the country's dual carbon goals. As a key component in the transmission device of a wind turbine generator set, the wind power coupling is responsible for transmitting gearbox torque, load, displacement compensation, insulation protection, overload protection and braking. Its performance directly determines the life of the entire wind turbine. However, the existing couplings are unstable in operation, low in reliability, poor in safety, and inconvenient to maintain. Therefore, a coupling with better performance and meeting the operating conditions is a major demand for wind turbines. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art. The utility model provides a coupling and a wind turbine generator set including the coupling.

[0004] The utility model is realized by the following technical solutions:

[0005] A coupling is used to connect between a generator and a gearbox, the coupling comprising a gearbox-side expansion sleeve assembly, a generator-side expansion sleeve assembly, an intermediate assembly, a brake disc, a generator-side connecting flange and two diaphragm assemblies, one side of the two diaphragm assemblies are respectively connected to the two ends of the intermediate assembly, the other sides of the two diaphragm assemblies are respectively connected to the brake disc and the generator-side connecting flange, the gearbox-side expansion sleeve assembly is connected to the side of the brake disc facing away from the diaphragm assembly, and the gearbox-side expansion sleeve assembly is used to connect to the gearbox, the generator-side expansion sleeve assembly is connected to the side of the generator-side connecting flange facing away from the diaphragm assembly, and the generator-side expansion sleeve assembly is used to connect to the generator.

[0006] Preferably, the intermediate body assembly includes a glass fiber reinforced plastic intermediate body and two connecting flanges, the two connecting flanges are respectively connected to two ends of the glass fiber reinforced plastic intermediate body, and the two connecting flanges are respectively connected to the two diaphragm assemblies by bolts.

[0007] Preferably, the two connecting flanges are respectively bonded to two ends of the FRP intermediate body.

[0008] Preferably, the gearbox side expansion sleeve assembly includes a first inner tapered sleeve and a first outer tapered sleeve, the first inner tapered sleeve is connected to the side of the brake disc, the first inner tapered sleeve and the first outer tapered sleeve are both sleeved on the shaft of the gearbox, and the first outer tapered sleeve is connected to the first inner tapered sleeve by bolts so that the first inner tapered sleeve is tightly clamped on the shaft of the gearbox.

[0009] Preferably, the first inner cone sleeve is connected to the brake disc by bolts.

[0010] Preferably, the generator side expansion sleeve assembly includes a second inner cone sleeve and a second outer cone sleeve, the second inner cone sleeve is connected to the side of the generator side connecting flange, the second inner cone sleeve and the second outer cone sleeve are both sleeved on the shaft of the generator, and the second outer cone sleeve is connected to the second inner cone sleeve by bolts so that the second inner cone sleeve is tightly clamped on the shaft of the generator.

[0011] Preferably, the second inner cone sleeve is connected to the generator-side connecting flange by bolts.

[0012] Preferably, the two diaphragm assemblies each include a plurality of diaphragms, and the plurality of diaphragms are installed between the intermediate assembly and the brake disc, and between the intermediate assembly and the generator-side connecting flange through pins and bolts.

[0013] Preferably, the outer peripheral surface of the brake disc has a gear structure.

[0014] A wind turbine generator set comprises the coupling as described above.

[0015] The beneficial effects of the utility model are:

[0016] The coupling of the utility model and the wind turbine generator set including the same are connected to the gearbox and the generator through the gearbox side expansion sleeve assembly and the generator side expansion sleeve assembly respectively, the two sides of the brake disc are respectively connected to the gearbox side expansion sleeve assembly and the diaphragm assembly, the two sides of the generator side connection flange are respectively connected to the generator side expansion sleeve assembly and the diaphragm assembly, the two ends of the intermediate assembly are connected to the two diaphragm assemblies, the intermediate assembly is used to transmit torque to the system and effectively insulate, and the diaphragm assembly is used to provide a certain deformation compensation function for the coupling, so that the wind turbine generator set can operate more reliably. At the same time, the coupling of the utility model can work for a long time in harsh environments, has high reliability, is safe and stable, and is easy to operate and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a coupling according to an embodiment of the utility model.

[0018] Figure 2The figure is a schematic diagram of the internal structure of the coupling according to the embodiment of the utility model.

[0019] Description of reference numerals:

[0020] Gearbox side expansion sleeve assembly 1

[0021] The first inner cone sleeve 11

[0022] The first outer cone sleeve 12

[0023] Generator side expansion sleeve assembly 2

[0024] The second inner cone sleeve 21

[0025] The second outer cone sleeve 22

[0026] Intermediate Component 3

[0027] FRP intermediate 31

[0028] Connecting flange 32

[0029] Brake disc 4

[0030] Gear structure 41

[0031] Generator side connection flange 5

[0032] Diaphragm assembly 6 DETAILED DESCRIPTION

[0033] The following descriptions of the embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented.

[0034] This embodiment discloses a wind turbine generator set, which includes a coupling, a generator and a gear box. Figure 1 and Figure 2 As shown, the coupling is used to connect between the generator and the gearbox, and the coupling includes a gearbox side expansion sleeve assembly 1, a generator side expansion sleeve assembly 2, an intermediate assembly 3, a brake disc 4, a generator side connecting flange 5 and two diaphragm assemblies 6, one side of the two diaphragm assemblies 6 are respectively connected to the two ends of the intermediate assembly 3, and the other sides of the two diaphragm assemblies 6 are respectively connected to the brake disc 4 and the generator side connecting flange 5, the gearbox side expansion sleeve assembly 1 is connected to the side of the brake disc 4 facing away from the diaphragm assembly 6, and the gearbox side expansion sleeve assembly 1 is used to connect to the gearbox, the generator side expansion sleeve assembly 2 is connected to the side of the generator side connecting flange 5 facing away from the diaphragm assembly 6, and the generator side expansion sleeve assembly 2 is used to connect to the generator.

[0035] The two sides of the brake disc 4 are respectively connected to the gearbox side expansion sleeve assembly 1 and the diaphragm assembly 6, the two sides of the generator side connection flange 5 are respectively connected to the generator side expansion sleeve assembly 2 and the diaphragm assembly 6, and the two ends of the intermediate assembly 3 are connected to the two diaphragm assemblies 6, so that the gearbox side expansion sleeve assembly 1, the brake disc 4, the diaphragm assembly 6, the intermediate assembly 3, the diaphragm assembly 6, the generator side connection flange 5 and the generator side expansion sleeve assembly 2 in the coupling are sequentially connected and installed as a whole. The gearbox side expansion sleeve assembly 1 and the generator side expansion sleeve assembly 2 are respectively connected to the gearbox and the generator, and one end of the coupling is fixed to the shaft of the gearbox through the gearbox side expansion sleeve assembly 1, and the other end of the coupling is fixed to the shaft of the generator through the generator side expansion sleeve assembly 2, so that the coupling is connected to the generator and the gearbox, and the corresponding torque is transmitted at both ends. The intermediate assembly 3 transmits torque to the system and performs effective insulation, effectively preventing the generator shaft current from being transmitted to the gearbox side, thereby improving the safety of the wind turbine generator set. The diaphragm assembly 6 provides a certain deformation compensation function for the coupling, effectively avoiding the damage caused by the concentricity deviation of the generator and the gear box to the system operation, so that the wind turbine generator set can operate more reliably. At the same time, the coupling of the utility model can work for a long time in harsh environments, has high reliability, is safe and stable, and is easy to operate and maintain.

[0036] In this embodiment, the intermediate assembly 3 includes a glass fiber reinforced plastic intermediate body 31 and two connecting flanges 32, the two connecting flanges 32 are respectively connected to the two ends of the glass fiber reinforced plastic intermediate body 31, and the two connecting flanges 32 are respectively connected to the two diaphragm assemblies 6 by bolts. The glass fiber reinforced plastic intermediate body 31 can be made of high-strength glass fiber reinforced plastic material, which is light in weight, high in strength, good in corrosion resistance, and good in insulation performance, and can provide high-strength torque transmission and good insulation performance for the coupling. At the same time, the two connecting flanges 32 are respectively connected to the two ends of the glass fiber reinforced plastic intermediate body 31, and the intermediate assembly 3 is respectively connected to the two diaphragm assemblies 6 by the two connecting flanges 32, and the connection stability is high, which increases the reliability of the wind turbine generator set; and the installation connection is very convenient.

[0037] Among them, two connecting flanges 32 are respectively bonded to the two ends of the FRP intermediate body 31, and the FRP intermediate body 31 and the connecting flanges 32 are bonded and connected, and an advanced bonding process is adopted, which further increases the reliability of the wind turbine generator set; at the same time, the installation connection is very convenient. The two connecting flanges 32 at both ends of the intermediate body component 3 are respectively connected to the two diaphragm components 6 by connecting bolts, and the connecting bolts are all high-strength 10.9 grade bolts.

[0038] Both diaphragm assemblies 6 include multiple diaphragms, which are installed between the intermediate assembly 3 and the brake disc 4, and between the intermediate assembly 3 and the generator side connection flange 5 through pins and bolts. Specifically, in this embodiment, the diaphragm assembly 6 mainly plays a deformation compensation role when the wind turbine is running and rotating. The diaphragm assembly 6 includes 4 groups, 3 diaphragms are superimposed into one group, and the 4 groups of diaphragms are connected in pairs through a pin. The diaphragm assembly 6 is connected to the connection flange 32 of the intermediate assembly 3, the brake disc 4 and the generator side connection flange 5 through bolts, thereby increasing the corresponding deformation compensation function, effectively avoiding the damage caused by the concentricity deviation of the generator and the gearbox to the system operation, so that the wind turbine can operate more reliably. Among them, the bolts used are high-strength 10.9 grade bolts.

[0039] The diaphragm assembly 6 can be made of high-strength spring steel and subjected to a quenching and tempering treatment, and the surface is sandblasted, so that the diaphragm has a higher fatigue resistance and the service life of the coupling is increased.

[0040] The outer peripheral surface of the brake disc 4 has a gear structure 41, and the brake disc 4 is designed with a gear structure, which facilitates the measurement of the rotation speed when rotating. The brake disc 4 is installed and connected with the gear box side expansion sleeve assembly 1 and the diaphragm assembly 6 by bolts, and the bolts used are high-strength 10.9 grade bolts.

[0041] The gearbox side expansion sleeve assembly 1 includes a first inner cone sleeve 11 and a first outer cone sleeve 12. The first inner cone sleeve 11 is connected to the side of the brake disc 4. The first inner cone sleeve 11 and the first outer cone sleeve 12 are both sleeved on the shaft of the gearbox. The first outer cone sleeve 12 is connected to the first inner cone sleeve 11 by bolts, so that the first inner cone sleeve 11 is tightly held on the shaft of the gearbox. The first inner cone sleeve 11 and the first outer cone sleeve 12 are first installed on the shaft of the gearbox through clearance fit, and then the first inner cone sleeve 11 and the first outer cone sleeve 12 are pressed by the mounting bolts, so that the compressed gearbox side expansion sleeve assembly 1 can be tightly held on the shaft of the gearbox, thereby transmitting the corresponding required torque. The gearbox side expansion sleeve assembly 1 adopts a good matching clearance between the first inner cone sleeve 11 and the first outer cone sleeve 12 to facilitate on-site installation while meeting the torque transmission requirements.

[0042] The first inner cone sleeve 11 is connected to the brake disc 4 by bolts, and the bolts make it very convenient to install and disassemble the gearbox side expansion sleeve assembly 1 and the brake disc 4, so as to achieve the transmission of the corresponding torque. Among them, the bolts used between the gearbox side expansion sleeve assembly 1 and the brake disc 4 are high-strength 10.9-grade bolts, and the bolts used between the first inner cone sleeve 11 and the first outer cone sleeve 12 are also high-strength 10.9-grade bolts.

[0043] The generator side expansion sleeve assembly 2 includes a second inner cone sleeve 21 and a second outer cone sleeve 22. The second inner cone sleeve 21 is connected to the side of the generator side connection flange 5. The second inner cone sleeve 21 and the second outer cone sleeve 22 are both sleeved on the shaft of the generator. The second outer cone sleeve 22 and the second inner cone sleeve 21 are connected by bolts so that the second inner cone sleeve 21 is tightly held on the shaft of the generator. The second inner cone sleeve 21 and the second outer cone sleeve 22 are first installed on the shaft of the generator through clearance fit, and then the second inner cone sleeve 21 and the second outer cone sleeve 22 are pressed by the installation bolts, so that the compressed generator side expansion sleeve assembly 2 can be tightly held on the shaft of the generator, thereby transmitting the corresponding required torque. The generator side expansion sleeve assembly 2 adopts a good matching clearance through the second inner cone sleeve 21 and the second outer cone sleeve 22 to facilitate on-site installation while meeting the torque transmission.

[0044] The second inner cone sleeve 21 is connected to the generator side connection flange 5 by bolts, and the bolts make it very convenient to install and disassemble the generator side expansion sleeve assembly 2 and the generator side connection flange 5, so as to achieve the transmission of the corresponding torque. Among them, the bolts used between the generator side expansion sleeve assembly 2 and the generator side connection flange 5 are high-strength 10.9-grade bolts, and the bolts used between the second inner cone sleeve 21 and the second outer cone sleeve 22 are also high-strength 10.9-grade bolts.

[0045] Preferably, the coupling can be treated with spray painting and Dacromet plating to meet the C5H high corrosion resistance salt spray requirements.

[0046] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A coupling used to connect between a generator and a gearbox, characterized in that: The coupling includes a gearbox side expansion sleeve assembly, a generator side expansion sleeve assembly, an intermediate assembly, a brake disc, a generator side connecting flange and two diaphragm assemblies, one side of the two diaphragm assemblies are respectively connected to the two ends of the intermediate assembly, and the other sides of the two diaphragm assemblies are respectively connected to the brake disc and the generator side connecting flange, the gearbox side expansion sleeve assembly is connected to the side of the brake disc facing away from the diaphragm assembly, and the gearbox side expansion sleeve assembly is used to connect to the gearbox, the generator side expansion sleeve assembly is connected to the side of the generator side connecting flange facing away from the diaphragm assembly, and the generator side expansion sleeve assembly is used to connect to the generator.

2. The coupling according to claim 1, characterized in that: The intermediate body assembly includes a glass fiber reinforced plastic intermediate body and two connecting flanges. The two connecting flanges are respectively connected to two ends of the glass fiber reinforced plastic intermediate body, and the two connecting flanges are respectively connected to the two diaphragm assemblies through bolts.

3. The coupling according to claim 2, characterized in that: The two connecting flanges are respectively bonded to the two ends of the glass fiber reinforced plastic intermediate body.

4. The coupling according to claim 1, characterized in that: The gearbox side expansion sleeve assembly includes a first inner tapered sleeve and a first outer tapered sleeve, the first inner tapered sleeve is connected to the side of the brake disc, the first inner tapered sleeve and the first outer tapered sleeve are both sleeved on the shaft of the gearbox, and the first outer tapered sleeve is connected to the first inner tapered sleeve by bolts so that the first inner tapered sleeve is tightly clamped on the shaft of the gearbox.

5. The coupling according to claim 4, characterized in that: The first inner cone sleeve is connected to the brake disc by bolts.

6. The coupling according to claim 1, characterized in that: The generator side expansion sleeve assembly includes a second inner cone sleeve and a second outer cone sleeve, the second inner cone sleeve is connected to the side of the generator side connecting flange, the second inner cone sleeve and the second outer cone sleeve are both sleeved on the shaft of the generator, and the second outer cone sleeve is connected to the second inner cone sleeve by bolts so that the second inner cone sleeve is tightly clamped on the shaft of the generator.

7. The coupling according to claim 6, characterized in that The second inner cone sleeve is connected to the generator side connecting flange by bolts.

8. The coupling according to claim 1, characterized in that: The two diaphragm assemblies each include a plurality of diaphragms, and the plurality of diaphragms are installed between the intermediate assembly and the brake disc, and between the intermediate assembly and the generator-side connecting flange through pins and bolts.

9. The coupling according to claim 1, characterized in that: The outer peripheral surface of the brake disc has a gear structure.

10. A wind turbine generator set, characterized in that: It comprises a coupling as claimed in any one of claims 1 to 9.

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