Flange fastening assembly in a gas turbine engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01D-025/24
F01D-025/00
F01D-021/04
출원번호
US-0299022
(2016-10-20)
등록번호
US-10247038
(2019-04-02)
발명자
/ 주소
Kappes, Matthew J.
Romanowski, Erin M.
Burney, Dennes K.
출원인 / 주소
Rolls-Royce Corporation
대리인 / 주소
McCracken & Gillen LLC
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
According to one aspect, a flange fastening assembly for a gas turbine engine includes a first flange having a first hole therein, a second flange having a second hole disposed adjacent to the first flange, and a shoulder bolt disposed through the first hole and the second hole. The shoulder bolt ha
According to one aspect, a flange fastening assembly for a gas turbine engine includes a first flange having a first hole therein, a second flange having a second hole disposed adjacent to the first flange, and a shoulder bolt disposed through the first hole and the second hole. The shoulder bolt has a head portion, a stem portion, and a thread portion, and the stem portion and the thread portion define a shoulder. A bolt nut is disposed on the thread portion and a first spacer is disposed between the bolt nut and the first flange such that the first spacer overhangs the shoulder.
대표청구항▼
1. A flange fastening assembly for a gas turbine engine comprising: a first flange having a first hole therein;a second flange having a second hole disposed adjacent to the first flange;a shoulder bolt disposed through the first hole and the second hole, the shoulder bolt comprising a head portion,
1. A flange fastening assembly for a gas turbine engine comprising: a first flange having a first hole therein;a second flange having a second hole disposed adjacent to the first flange;a shoulder bolt disposed through the first hole and the second hole, the shoulder bolt comprising a head portion, a stem portion, and a thread portion, wherein the stem portion and the thread portion define a shoulder;a bolt nut disposed on the thread portion; anda first spacer disposed between the bolt nut and the first flange such that the first spacer overhangs the shoulder. 2. The flange fastening assembly of claim 1, wherein a travel distance of the bolt nut toward the head portion is delimited by the shoulder. 3. The flange fastening assembly of claim 2, wherein the first spacer is sized to fill a space between the first flange and the bolt nut. 4. The flange fastening assembly of claim 3, wherein the bolt nut in a fully torqued arrangement compresses the first spacer to an extent limited by a location of the shoulder such that a predetermined preload compression is imparted on the first spacer. 5. The flange fastening assembly of claim 4, further comprising a second spacer disposed between the head portion and the second flange such that the second spacer in combination with the first spacer receive the preload compression. 6. The flange fastening assembly of claim 5, wherein the second spacer is sized such that in combination with the first spacer comprise a total thickness that determines an amount of the overhang. 7. The flange fastening assembly of claim 6, wherein a length of the shoulder bolt is determined based on a predetermined amount of force during a fan blade out (FBO) event in the gas turbine engine such that the combination of the first spacer and the second spacer absorb the FBO force and minimize an amount of tensile load on the shoulder bolt. 8. The flange fastening assembly of claim 5, wherein the first spacer and the second spacer are made of any one of a nylon, hard plastic, elastomer, metallic, and resilient material. 9. The flange fastening assembly of claim 1, wherein the first hole and the second hole are a first shear pin hole and a second shear pin hole respectively. 10. A method of retrofitting a flange fastening assembly in a gas turbine engine having a first and a second flange each having an aperture defining a shear pin hole configured to receive a shear pin therethrough, the method comprising: disposing a shoulder bolt through the shear pin hole, wherein the shoulder bolt comprises a head portion, a stem portion, and a thread portion, wherein the stem portion and the thread portion define a shoulder;providing a bolt nut on the thread portion; anddisposing a first spacer between the bolt nut and the first flange such that the first spacer overhangs the shoulder. 11. The method of claim 10, further comprising: torquing the bolt nut toward the head portion; andbringing into contact the bolt nut and the first spacer. 12. The method of claim 11, further comprising: compressing the first spacer by the bolt nut to a preload compression level. 13. The method of claim 12, further comprising: delimiting a travel distance of the bolt nut toward the head portion by the shoulder. 14. The method of claim 13, wherein an amount of the preload compression level is based on an extent of compression of the overhang of the first spacer. 15. The method of claim 14, further comprising: disposing a second spacer between the head portion and the second flange. 16. The method of claim 15, further comprising: determining an amount of overhang based on a total thickness of a combination of thicknesses of the first spacer and the second spacer. 17. The method of claim 16, further comprising: determining a length of the shoulder bolt based on an amount of force during a fan blade out (FBO) event in the gas turbine engine such that a combination of the first spacer and the second spacer absorb the FBO force and minimize an amount of tensile load on the shoulder bolt. 18. The method of claim 15, wherein the first spacer and the second spacer are made of any one of a nylon, hard plastic, elastomer, metallic, and resilient material.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (5)
Kerry Arne Somppi ; Matthew Alan Treier, Apparatus for adjusting the cant of an annular article.
Schilling, Jan Christopher; Thompson, James Edward; Zegarski, Frederick Joseph; Hildebrand, Kurt Thomas; Bosel, Tod Kenneth, Removable stud for joining casing flanges.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.