US3907462A
Expired / Lapsed
US
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Hydraulic displacement type pumping system
Assignee: Ingersoll Dresser Pump Co
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Filing: 1974-08-09
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Granted: 1975-09-23
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Expires: 1994-08-09
Abstract
Abstract A hydraulic displacement type pumping system for pumping slurries or mixtures of solids and liquids of various types utilizing, at least one or more displacement vessels or cylinders, a first open transport system, i.e., one operating preferably at atmospheric pressure including; piping means for delivering slurry or other mixtures of solids and liquid to be pumped from a storage tank to the lower end of said displacement vessels or cylinders, slurry inlet valves and slurry discharge valves in said piping also at the lower end of the displacement vessels or cylinders which are connected to suitable piping to permit the slurry or other mixture being pumped to be passed from the displacement vessels or cylinders to the point of use; a second open transport system for propulsion liquid having preferably a high speed centrifugal pump for delivering a volume of pressurized propulsion liquid from a propulsion liquid storage tank to propulsion liquid inlet valves at the top of the displacement vessels or cylinders and propulsion liquid outlet valves generally connected adjacent the top of the displacement vessels or cylinders and piping for passing or returning propulsion liquid displaced from the displacement vessels or cylinders to the propulsion liquid storage tank during the operation of the system. The hydraulic displacement system includes, an electrical system having associated sensing means for monitoring operation of the hydraulic displacement type system and to signal changes therein to cause the automatic and selective actuation of the propulsion liquid inlet and outlet valves as a function of the sensed level of the interfaces between the slurry or other liquid being pumped and the propulsion liquid in the respective displacement vessels; and means to modulate the rate of operation of the system as a function of either the sensed level of the slurry or other mixture in the storage tank or the demand rate of the means for feeding slurry or other mixture into the storage tank for the first open transport system. The electrical system includes failsafe and override means with associated alarm signals for signalling the development of damgerous, adverse or undesirable conditions of operation; and a parallel circuit for operating the Hydraulic Displacement Type System manually instead of automatically.
Inventors
- 👤 Henry H Kroeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:28
CPC Classifications
F; F04; F04F; F04F1/00; F04F1/06; F04F1/10; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
435 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid, a. a plurality of displacement vessels each respectively forming a displacement chamber, b. each of said displacement vessels having a lower opening for charging and discharging slurry into and out of the displacement chamber and an upper opening for charging and discharging a propulsion liquid into and out of the displacement chamber, c. a first open transport system having storate means for slurry, means connecting said slurry storage means into the lower opening of each respective displacement vessel for delivering slurry therefrom to the displacement chamber of any given displacement vessel including, inlet check valve means, for each displacement vessel and means connected to the lower opening of each displacement vessel independent of the slurry delivering means for each given displacement vessel including, discharge check valve means for each displacement vessel to permit slurry to be discharged from the displacement chamber of each given displacement vessel to any suitable point of use, d. a second open transport system having storage means for propulsion liquid, means connecting said propulsion liquid storage means to the upper opening of each respective displacement vessel for delivering propulsion liquid therefrom to the displacement chamber of any given displacement vessel including, normally closed inlet valve means for each displacement vessel for controlling charging of propulsion liquid to each displacement chamber of a given displacement vessel, and means connected to the upper opening of each displacement vessel independent of the propulsion liquid delivery means for each given displacement vessel including, normally closed outlet valve means to control return of propulsion liquid to the propulsion liquid storage means, and a high speed centrifugal pump, e. an upper sensing means and a lower sensing means on each respective displacement vessel to sense the position of the interface between the slurry and propulsioN liquid in the associated displacement chamber formed by the displacement vessel as the same are alternately and sequentially charged into and discharged from the given discharge chambers, f. control means for operating the inlet valve means and the outlet valve means of said second open transport system operatively connected to the respective upper sensing means and lower sensing means to alternately and sequentially charge and return propulsion liquid into and out of each displacement chamber to pump slurry from the respective displacement chambers to any suitable use, and g. means in said control means to delay operation of the inlet valve means on each respective displacement vessel until any other associated displacement vessel has the slurry therein substantially discharged from the displacement chamber of such other associated displacement vessel.
Claim 2
Dependent Claim
435 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid, a. a plurality of displacement vessels each respectively forming a displacement chamber, b. each of said displacement vessels having a lower opening for charging and discharging slurry into and out of the displacement chamber and an upper opening for charging and discharging a propulsion liquid into and out of the displacement chamber, c. a first open transport system having storate means for slurry, means connecting said slurry storage means into the lower opening of each respective displacement vessel for delivering slurry therefrom to the displacement chamber of any given displacement vessel including, inlet check valve means, for each displacement vessel and means connected to the lower opening of each displacement vessel independent of the slurry delivering means for each given displacement vessel including, discharge check valve means for each displacement vessel to permit slurry to be discharged from the displacement chamber of each given displacement vessel to any suitable point of use, d. a second open transport system having storage means for propulsion liquid, means connecting said propulsion liquid storage means to the upper opening of each respective displacement vessel for delivering propulsion liquid therefrom to the displacement chamber of any given displacement vessel including, normally closed inlet valve means for each displacement vessel for controlling charging of propulsion liquid to each displacement chamber of a given displacement vessel, and means connected to the upper opening of each displacement vessel independent of the propulsion liquid delivery means for each given displacement vessel including, normally closed outlet valve means to control return of propulsion liquid to the propulsion liquid storage means, and a high speed centrifugal pump, e. an upper sensing means and a lower sensing means on each respective displacement vessel to sense the position of the interface between the slurry and propulsioN liquid in the associated displacement chamber formed by the displacement vessel as the same are alternately and sequentially charged into and discharged from the given discharge chambers, f. control means for operating the inlet valve means and the outlet valve means of said second open transport system operatively connected to the respective upper sensing means and lower sensing means to alternately and sequentially charge and return propulsion liquid into and out of each displacement chamber to pump slurry from the respective displacement chambers to any suitable use, and g. means in said control means to delay operation of the inlet valve means on each respective displacement vessel until any other associated displacement vessel has the slurry therein substantially discharged from the displacement chamber of such other associated displacement vessel.
Claim 3
Dependent Claim
76 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 1 including, a. means to adjust the rate of the alternate and sequential charging and return of propulsion liquid into and out of each respective displacement chamber, b. and, said means operative to increase or decrease the rate of operation of the system as a function of the use of the slurry delivered from the first open transport system.
Claim 4
Dependent Claim
45 words
said first actuating circuit operatively connected to the associate upper sensing switch for the displacement vessel of the inlet valve means to actuate the valve from normally closed to open position when the interface signals that the slurry has been charged into the displacement vessel,
Claim 5
Dependent Claim
45 words
said first actuating circuit operatively connected to the associate upper sensing switch for the displacement vessel of the inlet valve means to actuate the valve from normally closed to open position when the interface signals that the slurry has been charged into the displacement vessel,
Claim 6
Dependent Claim
53 words
a second actuating circuit means electrically connected to said outlet valve means to actuate said outlet valve means to open position and operatively associated with the lower sensing means to sense the level of the interface between the propulsion liquid and the slurry when the slurry has been discharged from the displacement vessel,
Claim 7
Dependent Claim
53 words
a second actuating circuit means electrically connected to said outlet valve means to actuate said outlet valve means to open position and operatively associated with the lower sensing means to sense the level of the interface between the propulsion liquid and the slurry when the slurry has been discharged from the displacement vessel,
Claim 8
Dependent Claim
70 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 1 including, a. means for adjusting the rate of the alternate and sequential operating cycle for the propulsion liquid, b. and, said last mentioned means operative to increase and decrease the operating cycle as a function of the level of the slurry in the slurry storage means of the first open transport system.
Claim 9
Dependent Claim
117 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 1, including, a. an upper limit alarm sensing device and a lower limit alarm sensing device on each of said displacement vessels disposed to extend into each respective displacement chamber thereof for sensing predetermined maximum and minimum level limits for the interface between the slurry and the propulsion liquid in each of said respective displacement chambers, b. said control system including, an alarm means, c. and, said alarm means in the control system operatively associated with the respective upper limit alarm sensor and lower limit alarm sensor to signal the occurrence of said condition during the operation of the system.
Claim 10
Dependent Claim
43 words
said first and second actuating circuit means electrically connected to each other so as to actuate the inlet valve means and outlet valve means of the respective displacement vessels alternately and sequentially to permit the uniform flow of slurry from the displacement vessels,
Claim 11
Dependent Claim
43 words
said first and second actuating circuit means electrically connected to each other so as to actuate the inlet valve means and outlet valve means of the respective displacement vessels alternately and sequentially to permit the uniform flow of slurry from the displacement vessels,
Claim 12
Dependent Claim
48 words
and cross over means connected to said first and second actuating circuit means so as to effect the deactuating of said inlet valve means and outlet valve means of one vessel befOre the inlet valve means and outlet valve means of the next associated displacement vessel are actuated.
Claim 13
Dependent Claim
48 words
and cross over means connected to said first and second actuating circuit means so as to effect the deactuating of said inlet valve means and outlet valve means of one vessel befOre the inlet valve means and outlet valve means of the next associated displacement vessel are actuated.
Claim 14
Dependent Claim
65 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 1, wherein said control system includes, a. means to operate the control system manually disposed in parallel with the system operating as a function of the sensed upper and lower limits of the interface, b. and, switch means adapted to place the system on automatic or manual operation.
Claim 15
Dependent Claim
45 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 1 wherein each of the respective displacement chambers are coated with a substance to prevent corrosion and sticking of slurry on the inner wall of the displacement vessel.
Claim 16
Dependent Claim
26 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 6 wherein the coating material is a fluorocarbon resin.
Claim 17
Dependent Claim
42 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 1 wherein the upper sensing means and lower sensing means are temperature operated switches normally open and disposed to close at a predetermined temperature variation.
Claim 18
Dependent Claim
118 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 1 including, a. air operated means for actuating said inlet valve means and said outlet valve means in the second open transport system, b. solenoid operated pilot valve means for delivering air to the air operated mEans for each of said inlet valve means and outlet valve means, c. and, said control means operatively connecting the upper sensing means of a given displacement vessel to the solenoid operating means of the associated inlet valve means for said displacement vessel and similarly connecting said lower sensing means to the solenoid operating means for the associated outlet valve means for the displacement vessel.
Claim 19
Dependent Claim
96 words
In a system for hydraulically displacing slurry with a direct propulsion liquid as claimed in Claim 1 including, a. means to adjust the rate of the alternate and sequential operating cycle for charging and returning propulsion liquid into and out of each displacement chamber, b. means for measuring the level of the slurry in said slurry storage means in the first open transport system, c. and, said adjustment means operatively responsive to the level measuring means to increase and decrease the operating cycle as a function of the level of the slurry in the storage means.
Claim 20
Dependent Claim
73 words
In a system for hydraulically displacing slurry with a direct contact propulsion liquid as claimed in claim 10, said measuring means including, a. an upper limit level and a lower limit level for sensing predetermined maximum and minimum levels of slurry in said slurry storage means, b. transducer means, and c. means to transmit the maximum and minimum signals from said upper level sensors and said lower level sensors to said transducer means.
Claim 21
Dependent Claim
196 words
A circuit for controlling the operating cycle of a system for hydraulically displacing slurry that includes, a. a plurality of displacement vessels connected in parallel and each having an upper opening and a lower opening, b. means for delivering slurry to the lower opening of each displacement vessel from a slurry storage tank, and means independent of the slurry delivery means for discharging slurry from the lower opening of each displacement vessel, c. each of said displacement vessels having a normally closed inlet valve means connected to the respective upper opening thereof at one end and to a source of pressurized propulsion liquid at the end remote therefrom and each of said displacement vessels having a normally closed outlet valve means connected to the upper opening thereof for returning the propulsion liquid from the respective displacement vessel to the source of the propulsion liquid, d. upper sensing switches and lower sensing switches extending into said displacement vessels for sensing the level of the interface between the propulsion liquid and the slurry in the said respective displacement vessels after a given level of said interface in the vessel has been reached, e. and said control circuit comprising,
Claim 22
Dependent Claim
196 words
A circuit for controlling the operating cycle of a system for hydraulically displacing slurry that includes, a. a plurality of displacement vessels connected in parallel and each having an upper opening and a lower opening, b. means for delivering slurry to the lower opening of each displacement vessel from a slurry storage tank, and means independent of the slurry delivery means for discharging slurry from the lower opening of each displacement vessel, c. each of said displacement vessels having a normally closed inlet valve means connected to the respective upper opening thereof at one end and to a source of pressurized propulsion liquid at the end remote therefrom and each of said displacement vessels having a normally closed outlet valve means connected to the upper opening thereof for returning the propulsion liquid from the respective displacement vessel to the source of the propulsion liquid, d. upper sensing switches and lower sensing switches extending into said displacement vessels for sensing the level of the interface between the propulsion liquid and the slurry in the said respective displacement vessels after a given level of said interface in the vessel has been reached, e. and said control circuit comprising,
Claim 23
Dependent Claim
41 words
In the circuit for controlling the operation of a system for hydraulically displacing slurry as claimed in claim 12 including, a. means for placing said controlling circuit on manual operation, b. and, switch means for changing from automatic to manual operation.
Claim 24
Dependent Claim
52 words
In a circuit for controlling the operation of a system for hydraulically displacing slurry as claimed in claim 12 including, a. upper and lower alarm sensing switches, b. alarm signals means, c. and, means connecting said upper level alarm sensors and said lower level alarm signal switches to said alarm signal means.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |