# US 11,905,922 B2 · Gasket for wind turbine

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- Number: US 11,905,922 B2
- Document ID: US11905922B2
- Status: Granted
- Kind: B2
- Application number: 17/717,432
- Filed: 2022-04-11
- Published: 2022-10-06
- Granted: 2024-02-20
- Earliest claimed: 2016-04-15
- Assignees: Pur Wind ApS; Rosen Swiss AG
- Applicants: Pur Wind ApS; ROSEN Swiss AG
- Inventors: Claus Nissen Petersen
- Web page: https://patentgrep.com/patent/US11905922B2

## CPC

- F03D 13/10: Assembly of wind motors; Arrangements for erecting wind motors
- E02B 17/0004: {Nodal points}
- E02D 27/425: {specially adapted for wind motors masts (wind motors per se F03D1/00)}
- F03D 13/20: Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D 13/22: {Foundations specially adapted for wind motors}
- F03D 13/25: specially adapted for offshore installation
- E02B 2017/0065: {Monopile structures}
- E02B 2017/0091: {Offshore structures for wind turbines}
- F05B 2230/60: Assembly methods
- F05B 2240/912: on a tower
- F05B 2240/95: offshore
- F05B 2280/5001: Elasticity
- Y02E 10/72: Wind turbines with rotation axis in wind direction
- F03D: WIND MOTORS
- E02B: HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F)
- E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)}
- F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The present invention relates to a gasket adapted for being placed between a transition piece and a monopile of a wind turbine. One embodiment relates to a gasket for formfitting the bottom part of a transition piece of a wind turbine, the gasket primarily manufactured in an elastomeric material and shaped as a hollow elongated body for surrounding at least a part of the monopile when mounted between the transition piece and the monopile, such that the gasket stabilizes the position of the transition piece relative to the monopile. The presently disclosed gasket can substitute the traditional grouting or bolting procedures when mounting a transition piece on a monopile.

## Claims

### Claim 1

A method for manufacturing a gasket for a bottom part of a transition piece of a wind turbine, the method comprising the steps of:
gradually spraying a fluid elastomeric material onto a bottom inner surface of a section of the transition piece that will be assembled with a pile structure, such that a layer of elastomeric material is formed; and
curing the layer of elastomeric material such that a gasket is formed,
wherein the gasket is configured for formfitting the bottom part of the transition piece of the wind turbine, the gasket being shaped as a hollow elongated body for surrounding at least a part of the pile structure, when mounted between the transition piece and the pile structure, such that the gasket stabilizes the position of the transition piece relative to the pile structure.

### Claim 2 (depends on 1)

The method of claim 1, wherein the spraying is selected from the group consisting of: thermal spraying, spray drying, and combinations thereof.

### Claim 3 (depends on 1)

The method of claim 1, wherein the fluid elastomeric material is a solution or precursor of the elastomeric material.

### Claim 4 (depends on 1)

The method of claim 1, wherein the fluid elastomeric material is selected from the group consisting of: polyurethane (PUR), rubber, nylon, polyoxymethylene (POM), polyethylene (PE), polyurea, and combinations thereof.

### Claim 5 (depends on 1)

The method of claim 1, wherein the fluid elastomeric material is a solution of polyurea.

### Claim 6 (depends on 1)

The method of claim 1, wherein the fluid elastomeric material is a polyurethane system.

### Claim 7 (depends on 1)

The method of claim 1, wherein the transition piece and gasket form an integrated and free-standing unit.

### Claim 8 (depends on 1)

The method of claim 1, further comprising the step of assembling the integrated transition piece and gasket to a pile structure, such that the gasket stabilizes the position of the transition piece relative to the pile structure.

### Claim 9

A method for manufacturing a gasket for a bottom part of a transition piece of a wind turbine, the method comprising the steps of:
pouring a fluid elastomeric material into one or more preformed molds; and
curing the fluid elastomeric material to form a gasket comprising one or more parts,
wherein the gasket is configured for formfitting the bottom part of the transition piece of the wind turbine, the gasket being shaped as a hollow elongated body for surrounding at least a part of a pile structure, when mounted between the transition piece and the pile structure, such that the gasket stabilizes the position of the transition piece relative to the pile structure.

### Claim 10 (depends on 9)

The method of claim 9, wherein the mold casting is selected from the group consisting of: hot casting, cold casting, and combinations thereof.

### Claim 11 (depends on 9)

The method of claim 9, wherein the fluid elastomeric material is a solution or precursor of the elastomeric material.

### Claim 12 (depends on 9)

The method of claim 9, wherein the fluid elastomeric material comprises diisocyantes selected from the group consisting of: toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), aliphatic and unconventional isocyanates, and any combinations thereof.

### Claim 13 (depends on 9)

The method of claim 9, wherein the fluid elastomeric material comprises polyols selected from the group consisting of: polyether, polyester polyols, and combinations thereof.

### Claim 14 (depends on 9)

The method of claim 9, wherein the gasket is mold casted as one or more free-standing units.

### Claim 15 (depends on 9)

The method of claim 9, further comprising the step of assembling the gasket from multiple cast units.

### Claim 16 (depends on 9)

The method of claim 9, further comprising the step of assembling the gasket between the transition piece and the pile structure, such that the gasket stabilizes the position of the transition piece relative to the pile structure.

### Claim 17 (depends on 9)

The method of claim 9, further comprising the step of transporting the gasket to an assembly site.

### Claim 18

A method for mounting a gasket for a bottom part of a transition piece of a wind turbine, the method comprising the steps of:
providing a gasket configured for formfitting the bottom part of the transition piece of the wind turbine, the gasket being shaped as a hollow elongated body for surrounding at least a part of a pile structure, when mounted between the transition piece and the pile structure, such that the gasket stabilizes the position of the transition piece relative to the pile structure, wherein the gasket forms a free-standing unit, and
assembling the gasket to the pile structure.