US4710299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone separator
Assignee: Baker Hughes Ltd
•
Filing: 1986-04-04
•
Granted: 1987-12-01
•
Expires: 2006-04-04
Abstract
Abstract A cyclone separator having an inlet with inner and outer profiles, viewed in section transverse to the separator axis. This location of any particular point on the outer profile is defined by a vector contained in a plane normal to the separator axis, and having its origin at a location (C) where the outer profile meets the adjacent inner circumference of the separator. As the magnitude of the vector (T) increases, an angle (θ) between the vector (T) and a tangent to the circumference (C) which passes through location (C) never decreases and never becomes less than negative 0.1 radian. The location of any particular point on the inner profile is defined by a vector (U) having its point of origin at a location (E) where the inner profile or at least its projection meets the separator circumference. As the magnitude of vector (U) increases, an angle (ζ) between vector (U) and a tangent to circumference which passes through location (E) never decreases and never becomes less than negative 0.52 radian, at least for substantial magnitudes of vector (U).
Inventors
- 👤 Gavan J. J. Prendergast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:34
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/02; B04C5/04; B04C5/08; B04C5/081; B04C5/12; B04C5/13
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
365 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, said inlet means being defined by a portion of the separating chamber and at least one inlet tract communicating with said portion, said portion being that portion of the separating chamber which is at the same lengthwise position as the or each inlet tract, wherein the or each inlet tract includes means for presenting inner and outer profiles, when viewed axially of the separator, said outer profile extending from a first location at which it meets the circumference of said portion of the separating chamber and at least the inward projection of said inner profile extending from a second location at which the inner profile or its said projection meets said circumference, said outer profile being dimensioned so that a first vector T describing the location of any particular point on said outer profile and contained in a plane normal to said axis, and having its origin at said first location, is such that as the magnitude of the vector T increases, an angle θ between the vector T and that tangent to said circumference which passes through said first location never decreases substantially and never becomes less than negative 0.1 radian; the cross-sectional area perpendicular to the direction of flow generally contracting in the direction of flow.
Claim 2
Dependent Claim
365 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, said inlet means being defined by a portion of the separating chamber and at least one inlet tract communicating with said portion, said portion being that portion of the separating chamber which is at the same lengthwise position as the or each inlet tract, wherein the or each inlet tract includes means for presenting inner and outer profiles, when viewed axially of the separator, said outer profile extending from a first location at which it meets the circumference of said portion of the separating chamber and at least the inward projection of said inner profile extending from a second location at which the inner profile or its said projection meets said circumference, said outer profile being dimensioned so that a first vector T describing the location of any particular point on said outer profile and contained in a plane normal to said axis, and having its origin at said first location, is such that as the magnitude of the vector T increases, an angle θ between the vector T and that tangent to said circumference which passes through said first location never decreases substantially and never becomes less than negative 0.1 radian; the cross-sectional area perpendicular to the direction of flow generally contracting in the direction of flow.
Claim 3
Dependent Claim
84 words
A cyclone separator according to claim 1 the inner profile being characterised by a second vector U, describing the location of any particular point on the inner profile and having its point of origin at said second location is such that as the magnitude of vector U increases, an angle ζ between vector U and that tangent to said circumference which passes through said location never decreases substantially and never becomes less than negative 0.52 radian, at least for substantial magnitudes of vector U.
Claim 4
Dependent Claim
185 words
A cyclone separator as claimed in claim 2 wherein said inlet means is characterised in that as said magnitude of said first vector T increases said angle θ never decreases substantially and never becomes less than negative 0.1 radian for all magnitudes of vector T less than ηD, and that as said second vector U increases, said angle ζ never decreases substantially and never becomes less than negative 0.52 radian for at all magnitudes of vector U less than αD, at least for substantial magnitudes of vector U, where α<η<2π+α, (c) 0.35<α<1.5, (d) where ηD being the length of the outer profile of the inlet tract, viewed axially of the separating chamber, D being the diameter of said portion of the separating chamber αD being the length of the inner profile of the inlet tract viewed axially of the separating chamber, ηD being measured from a first location at which the outer profile meets the circumference of its portion of the separating chamber and αD being measured from a second location at which at least an inward projection of the inner profile meets said circumference.
Claim 5
Dependent Claim
65 words
A cyclone separator as claimed in claim 3 wherein: 0.04<4A.sub.i /πD.sup.2 <0.1 (e) where A i is the cross-sectional area of said tract, or the combined cross-sectional area of all said tracts, if there are more than one tract, the or each cross-sectional area being measured in a plane substantially perpendicular to tract inlet flow and intersecting the point of termination of said inner profile.
Claim 6
Dependent Claim
13 words
A cyclone separator as claimed in claim 4 characterised in that α<η<2π+<. (f)
Claim 7
Dependent Claim
72 words
A cyclone separator as claimed in claim 5 wherein the or each tract is of rectangular cross-section over at least a length qD for qα, the cross-section over at least a length W n and a width t n where Σt.sub.n ×W.sub.n =A.sub.i, (g) and D/35<t<D/6 (h) where w n is the length of the cross-section of the n th tract and t n is the width of the n th tract.
Claim 8
Dependent Claim
72 words
A cyclone separator as claimed in claim 4 wherein the or each tract is of rectangular cross-section over at least a length qD for qα, the cross-section over at least a length W n and a width t n where Σt.sub.n ×w.sub.n =A.sub.i, (g) and D/35<t<D/6 (h) where W n is the length of the cross-section of the n th tract and t n is the width of the n th tract.
Claim 9
Dependent Claim
44 words
A cyclone separator as claimed in claim 7 wherein the sides of the or each cross-section of length W are aligned generally in the axial direction of the separator and those of width t are aligned generally normally to the axis of the separator.
Claim 10
Dependent Claim
10 words
A cyclone separator as claimed in claim 8 where W>t.
Claim 11
Dependent Claim
19 words
A cyclone separator as claimed in claim 3 wherein D/d>3, where d is the diameter of said underflow outlet.
Claim 12
Dependent Claim
13 words
A cyclone separator as claimed in claim 3 wherein D/d≦3 α<η<2π+α, and 0.35<α<2.
Claim 13
Dependent Claim
129 words
A cyclone separator as claimed in claim 1 wherein the or each tract extends at a respective angle to the axis of the separator, when viewed normally of said axis, wherein the respective angle ρ between said axis and the mean inlet flow direction for liquid mixture when admitted through a respective inlet tract, at the point where the mean flow path intersects the said respective tract cross-section at which the area A i is measured, is 80°<ρ<95° (j) where the angle ρ is defined such that for values thereof less than 90° the liquid flow into the separating chamber in use, along said flow path, has a motional component which is directed in the direction from the larger diameter to the smaller diameter end of the separating chamber.
Claim 14
Dependent Claim
27 words
A cyclone separator as claimed in claim 1 wherein said angle θ is characterized in that, as said vector T increases, it never becomes less than zero.
Claim 15
Dependent Claim
85 words
A cyclone separator as claimed in claim 1 wherein the inner profile is characterized in that a second vector U, describing the location of any particular point on the inner profile and having its point of origin at said second location is such that as the magnitude of vector U increases, an angle ζ between vector U and that tangent to said circumference which passes through said second location never decreases and never becomes less thant zero, at least for substantial magnitudes of vector U.
Claim 16
Dependent Claim
19 words
A cyclone separator as claimed in claim 1 wherein the or each inlet tract is of substantially involute form.
Claim 17
Dependent Claim
22 words
A cyclone separator as claimed in claim 1 wherein the or each inlet tract has an outer profile of substantially involute form.
Claim 18
Dependent Claim
365 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, said inlet means being defined by a portion of the separating chamber and at least one inlet tract communicating with said portion, said portion being that portion of the separating chamber which is at the same lengthwise position as the or each inlet tract, wherein the or each inlet tract includes means for presenting inner and outer profiles, when viewed axially of the separator, said outer profile extending from a first location at which it meets the circumference of said portion of the separating chamber and at least the inward projection of said inner profile extending from a second location at which the inner profile or its said projection meets said circumference, said outer profile being dimensioned so that a first vector T describing the location of any particular point on said outer profile and contained in a plane normal to said axis, and having its origin at said first location, is such that as the magnitude of the vector T increases, an angle θ between the vector T and that tangent to said circumference which passes through said first location is in the range less than 0 to negative 0.1 radian; the cross-sectional area perpendicular to the direction of flow generally contracting in the direction of flow.
Claim 19
Dependent Claim
365 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, said inlet means being defined by a portion of the separating chamber and at least one inlet tract communicating with said portion, said portion being that portion of the separating chamber which is at the same lengthwise position as the or each inlet tract, wherein the or each inlet tract includes means for presenting inner and outer profiles, when viewed axially of the separator, said outer profile extending from a first location at which it meets the circumference of said portion of the separating chamber and at least the inward projection of said inner profile extending from a second location at which the inner profile or its said projection meets said circumference, said outer profile being dimensioned so that a first vector T describing the location of any particular point on said outer profile and contained in a plane normal to said axis, and having its origin at said first location, is such that as the magnitude of the vector T increases, an angle θ between the vector T and that tangent to said circumference which passes through said first location is in the range less than 0 to negative 0.1 radian; the cross-sectional area perpendicular to the direction of flow generally contracting in the direction of flow.
Claim 20
Dependent Claim
76 words
A cyclone separator according to claim 17 the inner profile being characterised by a second vector U, describing the location of any particular point on the inner profile and having its point of origin at said second location is such that as the magnitude of vector U increases, an angle ζ between vector U and that tangent to said circumference which passes through said location is in the range less than 0 to negative 0.52 radian.
Claim 21
Dependent Claim
212 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, said inlet means being defined by a portion of the separating chamber and at least one inlet tract communicating with said portion, said portion being that portion of the separating chamber which is at the same lengthwise position as the or each inlet tract, and the or each said tract being of substantially involute form.
Claim 22
Dependent Claim
212 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, said inlet means being defined by a portion of the separating chamber and at least one inlet tract communicating with said portion, said portion being that portion of the separating chamber which is at the same lengthwise position as the or each inlet tract, and the or each said tract being of substantially involute form.
Claim 23
Dependent Claim
180 words
A cyclone separator for separating denser component(s) of a fluid mixture from less dense component(s) thereof said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, wherein an end wall of the separating chamber, through which said overflow outlet communicates with the separating chamber, is formed of curved configuration.
Claim 24
Dependent Claim
180 words
A cyclone separator for separating denser component(s) of a fluid mixture from less dense component(s) thereof said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, wherein an end wall of the separating chamber, through which said overflow outlet communicates with the separating chamber, is formed of curved configuration.
Claim 25
Dependent Claim
17 words
A cyclone separator as claimed in claim 20 wherein said end wall is at least partially concave.
Claim 26
Dependent Claim
17 words
A cyclone separator as claimed in claim 20 wherein said end wall is at least partially convex.
Claim 27
Dependent Claim
184 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, wherein the overflow outlet is in the form of a duct which extends through an end wall of the separating chamber and projects into the separating chamber.
Claim 28
Dependent Claim
184 words
A cyclone separator for separating denser components of a fluid mixture from less dense components thereof, said separator comprising: means for permitting provision of only a single inlet opening in an axially extending separating chamber having towards one end inlet means for admission of the mixture with a tangential flow component, the separating chamber having an axially positioned overflow outlet adjacent said one end and said separating chamber of generally tapered form with a relatively larger cross-sectional size at said one end and a relatively small cross-sectional size at an axially positioned underflow outlet at the end of the separating chamber opposite said one end, including means for directing the denser component to the underflow outlet in a fashion such as to encompass an inner axially positioned core of the less dense component which is subjected at least over a substantial part of its length to a pressure differential causing it to flow to the overflow outlet, wherein the overflow outlet is in the form of a duct which extends through an end wall of the separating chamber and projects into the separating chamber.
Claim 29
Dependent Claim
14 words
A cyclone separator as claimed in claim 1 having only one said inlet tract.
Claim 30
Dependent Claim
14 words
A cyclone separator as claimed in claim 17 having only one said inlet tract.
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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |