US3647312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting of stator blades in axial compressors
Assignee: CKD Praha DIZ AS
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Filing: 1970-02-17
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Granted: 1972-03-07
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Expires: 1990-02-17
Abstract
Abstract A compressor in which the blades of the stator are mounted in circular rows in a plurality of abutting axially aligned ringshaped members secured in a recess in the inner wall of the stator, each ring is provided with an associated second annular ring in which is located link means extending into engagement with each of the blades mounted on the first ring. The link means are arranged to swivel the blades about their axes. Means are provided for oscillating the second ring member to actuate the link means.
Inventors
- 👤 Zbynek Janc
- 👤 Vaclav Kadera
- 👤 Josef Novotny
- 👤 Adolf Nemec
- 👤 Jiri Penkava
- 👤 Miloslav Vondruska
- 👤 Zdenek Vitkovec
- 👤 Jiri Feierfeil
- 👤 Vlastimil Svoboda
- 👤 Dusan Misarek
- 👤 Miroslav Futera
- 👤 Katerina Nacovska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:05
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/52; F04D29/54; F04D29/56; F04D29/563; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/162
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
161 words
Apparatus for adjusting the position of stator blades in an axial flow compressor, the stator surrounding a rotor and spaced therefrom to form an annular passage therebetween coaxial with the axis of said compressor, comprising a first annular ring secured within a recess in the inner wall of said stator, a plurality of blades extending radially into said passage, a second annular ring rotatably mounted within said first ring coaxially therewith, link means connecting each of said blades to said second ring, said link means comprises a pin extending axially into engagement with shank of said blade, and a radial bolt located in said second ring and having a bifurcated end engaging with a mating portion form on said pin, said link means arranged to swivel said blades about their longitudinal axes on rotation of said second ring, means for selectively oscillating said second ring about the axis of said compressor whereby said oscillation swivels said blad to a predetermined adjustment.
Claim 2
Dependent Claim
161 words
Apparatus for adjusting the position of stator blades in an axial flow compressor, the stator surrounding a rotor and spaced therefrom to form an annular passage therebetween coaxial with the axis of said compressor, comprising a first annular ring secured within a recess in the inner wall of said stator, a plurality of blades extending radially into said passage, a second annular ring rotatably mounted within said first ring coaxially therewith, link means connecting each of said blades to said second ring, said link means comprises a pin extending axially into engagement with shank of said blade, and a radial bolt located in said second ring and having a bifurcated end engaging with a mating portion form on said pin, said link means arranged to swivel said blades about their longitudinal axes on rotation of said second ring, means for selectively oscillating said second ring about the axis of said compressor whereby said oscillation swivels said blad to a predetermined adjustment.
Claim 3
Dependent Claim
35 words
The apparatus according to claim 1 including a gear segment secured to said second ring, a pinion secured to an axial shaft and meshing with said segment, and motion means for selectively rotating said shaft.
Claim 4
Dependent Claim
19 words
The apparatus according to claim 2 including bearing means for rotatably supporting said second ring within said first ring.
Claim 5
Dependent Claim
205 words
Apparatus for adjusting the position of stator blades in an axial flow compressor, the stator surrounding a rotor and spaced therefrom to form an annular passage therebetween coaxial with the axis of said compressor, comprising a plurality of first annular ring members secured in abutting axial relation within a recess in the inner wall of said stator, a plurality of individual blades extending from each of said first ring members radially into said passage, each of said blades having a shank rotatably journaled in said first ring member, a second ring member rotatably mounted within each of said first ring members, each of said second ring members having in association with each of the blades of said first ring member a pin extending into axial engagement with the shank of said blade, and a bolt secured in a radial bore engaging said pin for conjoint movement therewith, gear means for oscillating each of said second ring members, means for joining selected adjacent gear means to form jointly oscillating groups of second ring members, and motive means for operating said gear means to oscillate each of said selected groups whereby said oscillation is translated into rotation of said individual blades in each group into predetermined adjustment.
Claim 6
Dependent Claim
205 words
Apparatus for adjusting the position of stator blades in an axial flow compressor, the stator surrounding a rotor and spaced therefrom to form an annular passage therebetween coaxial with the axis of said compressor, comprising a plurality of first annular ring members secured in abutting axial relation within a recess in the inner wall of said stator, a plurality of individual blades extending from each of said first ring members radially into said passage, each of said blades having a shank rotatably journaled in said first ring member, a second ring member rotatably mounted within each of said first ring members, each of said second ring members having in association with each of the blades of said first ring member a pin extending into axial engagement with the shank of said blade, and a bolt secured in a radial bore engaging said pin for conjoint movement therewith, gear means for oscillating each of said second ring members, means for joining selected adjacent gear means to form jointly oscillating groups of second ring members, and motive means for operating said gear means to oscillate each of said selected groups whereby said oscillation is translated into rotation of said individual blades in each group into predetermined adjustment.
Claim 7
Dependent Claim
43 words
The apparatus according to claim 4 wherein the pins associated with one of said second ring members in each group are of a predetermined length, and the pins associated with the remaining second ring member in said group are of progressively different length.
Claim 8
Dependent Claim
51 words
The apparatus according to claim 4, wherein said gear means comprises a gear segment mounted on said second ring member and a pinion gear mounted on a shaft, said shaft being common for each of said second ring members in each associated group, said shaft being connected to said motive means.
Claim 9
Dependent Claim
15 words
The apparatus according to claim 6 wherein said motive means is a remote controlled servomotor.
Claim 10
Dependent Claim
37 words
The apparatus according to claim 6 wherein the gear means of one of said second ring members in each group has a predetermined ratio and the remaining gear means in said group has progressively differing gear ratios.
Claim 11
Dependent Claim
30 words
The apparatus according to claim 4 including seal means for sealing said rings within said recess and in relationship to each other to prevent loss of gas from said passage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |