US3746027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump station
Assignee: TESORO PUMP & VALVE Co A CORP OF
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Filing: 1971-10-04
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Granted: 1973-07-17
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Expires: 1991-10-04
Abstract
Abstract Method and apparatus for a pipeline station including a powerassisted check valve in the pipeline, a bypass line around the check valve, a motor-driven pump in the bypass line and a poweroperated valve in the bypass line in series with and downstream of the pump, including means, when it is desired to start the pump, of first applying a closing force on the check valve to move it towards the closed position, starting the pump, and opening the bypass valve, the steps being conducted in timespaced sequence.
Inventors
- 👤 R Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:51
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/08; F17D1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/4891; Y10T137/8593; Y10T137/85978; Y10T137/86171; Y10T137/86389; Y10T137/86445
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A pump station comprising: a fluid conducting pipeline; a power-assisted check valve in said pipeline; a bypass line having a first connection to said pipeline upstream of said check valve and a second connection to said pipeline downstream of said valve; one or more motor-driven centrifugal pumps in said bypass line; a starter controlling the starting and stopping of each said motor-driven centrifugal pump; a power-actuated bypass valve in said bypass line between said pump and the downstream connection with said pipeline; and a timer-controller having connection to said power-assisted check valve, said starter and said power-actuated bypass valve, the timer-controller including means for the timed sequential actuation of said power-assisted check valve in advance of the actuation of said starter, and the actuation of said poweractuated bypass valve in timed sequential relation for starting and stopping said pump under minimum load conditions and eliminating slamming of said check valve.
Claim 2
Dependent Claim
150 words
A pump station comprising: a fluid conducting pipeline; a power-assisted check valve in said pipeline; a bypass line having a first connection to said pipeline upstream of said check valve and a second connection to said pipeline downstream of said valve; one or more motor-driven centrifugal pumps in said bypass line; a starter controlling the starting and stopping of each said motor-driven centrifugal pump; a power-actuated bypass valve in said bypass line between said pump and the downstream connection with said pipeline; and a timer-controller having connection to said power-assisted check valve, said starter and said power-actuated bypass valve, the timer-controller including means for the timed sequential actuation of said power-assisted check valve in advance of the actuation of said starter, and the actuation of said poweractuated bypass valve in timed sequential relation for starting and stopping said pump under minimum load conditions and eliminating slamming of said check valve.
Claim 3
Dependent Claim
49 words
A pump station according to claim 1 including: an incoming pig detector affixed to said pipeline upstream of said check valve having connection to said timer-controller for automatic actuation of said timer-controller to stop said pump and open said check valve when the arrival of a pig is detected.
Claim 4
Dependent Claim
49 words
A pump station according to claim 2 including: a pig detector affixed to said pipeline downstream of said check valve having connection to said timer-controller for the automatic actuation of said timer-controller to start said pump, and close said check valve when the departure of the pig is detected.
Claim 5
Dependent Claim
50 words
A pump station according to claim 1 wherein said timer-controller includes means, upon receipt of a pump start signal of: first, actuating said power-assisted check valve towards the closed position, second, actuating said starter to start said pump, and third, cause said bypass valve to open, all in time-spaced relationships.
Claim 6
Dependent Claim
49 words
A pump station according to claim 1 wherein said timer-controller includes means, upon receipt of a pump stop signal of: first, actuating said check valve towards the open position, second, cause said bypass valve to close, and third, actuating said starter to stop said pump, all in time-spaced relationships.
Claim 7
Dependent Claim
110 words
In a pipelinE station having a power-assisted check valve in the pipeline, a bypass line around the check valve, a motor-driven pump in the bypass line, and a power-operated bypass valve in the bypass line in series with and downstream of the pump, a method of operating the pipeline station to start the pump in a manner to impose least power requirements on the pump and to eliminate slamming of the check valve, comprising the steps of: first, applying closing force on said check valve to move it towards the closed position; second, starting the motor-driven pump; and third, opening the bypass valve, the steps being conducted in time-spaced sequence.
Claim 8
Dependent Claim
110 words
In a pipelinE station having a power-assisted check valve in the pipeline, a bypass line around the check valve, a motor-driven pump in the bypass line, and a power-operated bypass valve in the bypass line in series with and downstream of the pump, a method of operating the pipeline station to start the pump in a manner to impose least power requirements on the pump and to eliminate slamming of the check valve, comprising the steps of: first, applying closing force on said check valve to move it towards the closed position; second, starting the motor-driven pump; and third, opening the bypass valve, the steps being conducted in time-spaced sequence.
Claim 9
Dependent Claim
95 words
In a pipeline station having a power-assisted check valve in the pipeline, a bypass line around the check valve, a motor-driven pump in the bypass line, and a power-operated bypass valve in the bypass line in series with and downstream of the pump, a method of operating the pipeline station to stop the pump under minimum load conditions, comprising the steps of: first, applying opening force on said check valve to move it towards the open position; second, closing the bypass valve; and third, stopping the motor-driven pump, the steps being conducted in time-spaced sequence.
Claim 10
Dependent Claim
95 words
In a pipeline station having a power-assisted check valve in the pipeline, a bypass line around the check valve, a motor-driven pump in the bypass line, and a power-operated bypass valve in the bypass line in series with and downstream of the pump, a method of operating the pipeline station to stop the pump under minimum load conditions, comprising the steps of: first, applying opening force on said check valve to move it towards the open position; second, closing the bypass valve; and third, stopping the motor-driven pump, the steps being conducted in time-spaced sequence.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |