Patent US3528066A successfully refreshed from Google Patents.
Patent US4895644A successfully refreshed from Google Patents.
US4895644A
Expired / Lapsed
US
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Fluid supply and recirculation system
Assignee: Westinghouse Electric Corp
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Filing: 1988-07-01
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Granted: 1990-01-23
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Expires: 2008-07-01
Abstract
Abstract A fluid recirculation and makeup supply system having an alternate purification loop (84) in parallel with a portion of the recirculation loop (26). In the alternate purification mode of operation of the system a predetermined portion of the recirculated fluid is drawn through the purification loop (84) in parallel with a flow of the remainder of the recirculated fluid through the normal parallel recirculation flow path (86). The volume of fluid drawn through the purification path (84) is established to maintain the purification loop operating at its maximum efficiency. A makeup fluid supply loop (24) having a normal flow path (42) and an alternate, parallel filtration flow path (50), communicates with the recirculation loop (26). The amount of fluid inputted to the makeup loop (24), supplied through the makeup loop (24) to the recirculation loop (26), and drawn through the filtration path (50) are controlled, in the alternate filtration mode of operation, to establish a counter flow of fluid in the normal makeup flow path (42) so that none of the makeup fluid supplied to the recirculation loop (26) bypasses the filtration path (50).
Inventors
- 👤 Thaddeus T. Porembski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:56
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/28; G21C19/30; G21C19/303; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
276 words
A fluid supply system for supplying a fluid to a working system comprising: a first fluid-intake conduit for drawing fluid into the supply system; means for controlling the rate of fluid transported by said first fluid-intake conduit; a fluid transport conduit communicably coupling with said first fluid-intake conduit downstream of said transported-fluid rate-control means; a fluid output terminal communicably coupling with said fluid transport conduit at a location where the fluid is available for supply to the working system; a first conditioning conduit through which the fluid is conditioned, communicably coupling downstream of said transported-fluid rate-control means, with said first fluid-intake conduit at one end, and with said fluid output terminal at the other end, said first conditioning conduit being connected in a parallel flow path with said fluid-transport conduit; pumping means, connected to said conditioning conduit, for drawing fluid through said first conditioning conduit, in a direction from said fluid-intake conduit to said fluid output terminal, said pumping means being sized in capacity with reference to the capacity of said transported-fluid control means to pump fluid at a higher rate than its passage through the transported-fluid control means whereby fluid is pumped by said pumping means at a given rate through said first conditioning conduit which is larger than the rate of fluid being supplied through said transported-fluid control means, to establish a flow of fluid within said transport conduit in a direction from the fluid-output terminal toward said transported-fluid control means when said first conditioning conduit is in operation whereby the fluid from said first fluid-intake conduit whose rate is controlled by said transported-fluid control means is prevented from bypassing said first conditioning conduit.
Claim 2
Dependent Claim
276 words
A fluid supply system for supplying a fluid to a working system comprising: a first fluid-intake conduit for drawing fluid into the supply system; means for controlling the rate of fluid transported by said first fluid-intake conduit; a fluid transport conduit communicably coupling with said first fluid-intake conduit downstream of said transported-fluid rate-control means; a fluid output terminal communicably coupling with said fluid transport conduit at a location where the fluid is available for supply to the working system; a first conditioning conduit through which the fluid is conditioned, communicably coupling downstream of said transported-fluid rate-control means, with said first fluid-intake conduit at one end, and with said fluid output terminal at the other end, said first conditioning conduit being connected in a parallel flow path with said fluid-transport conduit; pumping means, connected to said conditioning conduit, for drawing fluid through said first conditioning conduit, in a direction from said fluid-intake conduit to said fluid output terminal, said pumping means being sized in capacity with reference to the capacity of said transported-fluid control means to pump fluid at a higher rate than its passage through the transported-fluid control means whereby fluid is pumped by said pumping means at a given rate through said first conditioning conduit which is larger than the rate of fluid being supplied through said transported-fluid control means, to establish a flow of fluid within said transport conduit in a direction from the fluid-output terminal toward said transported-fluid control means when said first conditioning conduit is in operation whereby the fluid from said first fluid-intake conduit whose rate is controlled by said transported-fluid control means is prevented from bypassing said first conditioning conduit.
Claim 3
Dependent Claim
17 words
The fluid supply system of claim 1 wherein the first conditioning conduit includes a fluid filtration system.
Claim 4
Dependent Claim
18 words
The fluid supply system of claim 1, including means for blocking fluid flow within the first conditioning conduit.
Claim 5
Dependent Claim
57 words
The fluid supply of claim 1 including: a fluid bypass conduit in series with and downstream of the fluid-output terminal; a second conditioning conduit through which the fluid is conditioned in parallel with said bypass conduit; and additional pumping means having a capacity sized to draw fluid through said second conditioning conduit at a fixed predetermined rate.
Claim 6
Dependent Claim
18 words
The fluid supply system of claim 4 including means for blocking fluid flow through the second conditioning conduit.
Claim 7
Dependent Claim
17 words
The fluid supply system of claim 4 wherein the second conditioning conduit includes an air purification unit.
Claim 8
Dependent Claim
43 words
The fluid supply system of claim 6 wherein the additional pumping means has a capacity sized to match the efficiency characteristics of the purification unit whereby at its fixed predetermined rate of flow of air the purification unit operates at its maximum efficiency.
Claim 9
Dependent Claim
46 words
The fluid supply system of claim 4 wherein the additional pumping means having a capacity with reference to the capacity of the transported-fluid control means such that the fixed predetermined rate is less than the rate at which the fluid is supplied at the fluid-output terminal.
Claim 10
Dependent Claim
53 words
The fluid supply system of claim 4 including means for conditioning the fluid, coupled in series with said bypass conduit at one end, downstream of said second conditioning conduit, and operable to be in fluid communication with the working system at the other end of the fluid flow path through said conditioning means.
Claim 11
Dependent Claim
55 words
The fluid supply system of claim 4 including a fluid recirculation system comprising: a second fluid intake for drawing fluid from the working system into the recirculation system; means for controlling the rate of fluid drawn into said second intake; and means for transporting the fluid drawn into said second intake to said bypass conduit.
Claim 12
Dependent Claim
49 words
The fluid supply system of claim 10 including a fluid pressure sensor for sensing the pressure of fluid in the working system wherein the second intake control means and the first intake control means cooperate with said sensor to control the pressure of the fluid in the working system.
Claim 13
Dependent Claim
168 words
In a nuclear-reactor plant an air-supply system for supplying substantially pure air to a work area of said plant at positive pressure, said air supply system including recirculating means including conduits connected to said work area for recirculating the air through said work area, said recirculating means also including air-purification means for purifying said air as it is recirculated, makeup air-supply means also connected to said work area and including an air intake and an additional conduit connected to conduct makeup air to said work area, another additional conduit connected in a parallel flow path with said additional conduit, said other additional conduit including air-filtration means and pumping means, said pumping means having a capacity with reference to the capacity of said air intake to pump said makeup air at a higher rate than it is being supplied through said intake, whereby when said other additional conduit is in operation with said pumping means operating at said capacity, bypass flow of air through said additional conduit is suppressed.
Claim 14
Dependent Claim
168 words
In a nuclear-reactor plant an air-supply system for supplying substantially pure air to a work area of said plant at positive pressure, said air supply system including recirculating means including conduits connected to said work area for recirculating the air through said work area, said recirculating means also including air-purification means for purifying said air as it is recirculated, makeup air-supply means also connected to said work area and including an air intake and an additional conduit connected to conduct makeup air to said work area, another additional conduit connected in a parallel flow path with said additional conduit, said other additional conduit including air-filtration means and pumping means, said pumping means having a capacity with reference to the capacity of said air intake to pump said makeup air at a higher rate than it is being supplied through said intake, whereby when said other additional conduit is in operation with said pumping means operating at said capacity, bypass flow of air through said additional conduit is suppressed.
Claim 15
Dependent Claim
31 words
The air-supply system of claim 12 including pressure-responsive means responsive to the pressure in the work area, connected to the air intake, for maintaining the work area at a positive pressure.
Claim 16
Dependent Claim
32 words
The air-supply system of claim 13 including additional pressure responsive means responsive to the pressure in the work area, connected to the recirculating means for controlling the pressure in the work area.
Claim 17
Dependent Claim
146 words
In a nuclear-reactor plant an air-supply system for supplying substantially pure air to a work area of said plant at positive pressure, said air-supply system including recirculating means including conduits connected to said work area for recirculating the air through said work area, said recirculating means also including air-purification means for purifying said air as it is recirculated, makeup air-supply means also connected to said work area and including an air intake and conduit means for conducting air from said air intake to said work area, pressure-responsive means responsive to the pressure in the work area, connected to said air intake, for controlling the pressure in the work area, and means, operable on the occurrence undesirably of an accident contaminating the intake air for isolating said makeup air-supply means from said work area, whereby said work area is supplied with air only through said recirculating means.
Claim 18
Dependent Claim
146 words
In a nuclear-reactor plant an air-supply system for supplying substantially pure air to a work area of said plant at positive pressure, said air-supply system including recirculating means including conduits connected to said work area for recirculating the air through said work area, said recirculating means also including air-purification means for purifying said air as it is recirculated, makeup air-supply means also connected to said work area and including an air intake and conduit means for conducting air from said air intake to said work area, pressure-responsive means responsive to the pressure in the work area, connected to said air intake, for controlling the pressure in the work area, and means, operable on the occurrence undesirably of an accident contaminating the intake air for isolating said makeup air-supply means from said work area, whereby said work area is supplied with air only through said recirculating means.
Claim 19
Dependent Claim
31 words
The air-supply system of claim 15 including additional pressure-responsive means responsive to the pressure in the work area, connected to the recirculating means, for controlling the pressure in the work area.
References Cited (Backward Citations)
US3750557A
Cited
US3964887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |