US3847511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically powered triplex pump and control system therefor
Assignee: Halliburton Co
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Filing: 1973-10-16
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Granted: 1974-11-12
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Expires: 1993-10-16
Abstract
Abstract A hydraulically powered triplex pump having at least three pumping units, each operable in a cycle including suction, precompression and discharge phases, with the cycles being out of phase with one another, whereby simultaneous performance of these functions results in a substantially constant pressure and flow of both the pumped fluid and the power fluid. Separate power and cycle control circuits, which may employ different fluids, are provided. Control valve assemblies, each including two sleeve valves communicating with a common chamber, are operated by the control circuit fluid to condition power circuit flow for various phases of the pumping cycle. Precompression valves, a fill valve and a dump valve are operated by the control circuit to provide additional conditioning of power circuit flow to provide the precompression phase and to correct for variations in pumping unit stroke length. A hydraulically operated shut off valve is employed to selectively isolate the multiplex pump from a source of pressurized power fluid. The power end of the pumping units include power cylinders which may be fluid interconnected at their rod ends so that operations in each power cylinder affect operations in the other cylinders.
Inventors
- 👤 C Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:44
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/02; F04B11/00; F04B11/005; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/117; F04B9/1172; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
508 words
A fluid operated triplex pump comprising: three piston and cylinder pumping assemblies, each operable in a suction, precompression and discharge cycle Out of phase with the others; each of said piston and cylinder assemblies including a power end and a fluid end, and a rod end; power circuit means for cyclically operating each of said piston and cylinder pumping assemblies in said suction, precompression and discharge cycles; control fluid circuit means for conditioning said power circuit means to cycle said piston and cylinder pumping assemblies; said power circuit means comprising: means for connecting the triplex pump to a power fluid reservoir for providing a source of power fluid; means for connecting the triplex pump to a power fluid pump for delivering pressurized power fluid from said fluid reservoir; flow regulating means operatively connecting the pressurized fluid delivered by said power fluid pump to said plurality of piston and cylinder assemblies and to said reservoir said flow regulating means including: a plurality of power circuit valve means, each for selectively placing one of said piston and cylinder pumping assemblies in unrestricted fluid communication with said pressurized power fluid, in restricted fluid communication with a reduced flow of said pressurized power fluid, or in fluid communication with said fluid reservoir; each of said power circuit valve means comprising: a power fluid inlet valve body having a power fluid entry passage and a power fluid exit passage; a power fluid exhaust valve body having a power fluid entry passage and a power fluid exit passage; precompression valve means having a power fluid entry port, a power fluid output port having a restricted passage, a control fluid pilot port, and means normally blocking the entry port from the output port when contorl fluid pilot pressure exists in the pilot port; the power fluid entry passage of said power fluid inlet valve body and the entry port of said precompression valve means being in continuous communication with pressurized power fluid delivered by said power fluid pump; a common chamber in fluid communication with the power fluid exit passage of said power fluid inlet valve body, and in continuous fluid communication with the power end of a respective one of said piston and cylinder assemblies, with the output port of said precompression valve means, and with the power fluid inlet passage of said power fluid exhaust valve body; the power fluid exit passage of said power fluid exhaust valve body being in continuous communication with said power fluid reservoir; the pilot ports of each of said precompression valve means being in control fluid communication with said control circuit means; power fluid inlet valve means carried by said power fluid inlet valve body for providing selective fluid communication between the power fluid entry passage and the power fluid exit passage of said power fluid inlet valve body; and power fluid exhaust valve means carried by said power fluid exhaust valve body for providing selective fluid communication between the power fluid entry passage and the power fluid exit passage of said power fluid exhaust valve body.
Claim 2
Dependent Claim
508 words
A fluid operated triplex pump comprising: three piston and cylinder pumping assemblies, each operable in a suction, precompression and discharge cycle Out of phase with the others; each of said piston and cylinder assemblies including a power end and a fluid end, and a rod end; power circuit means for cyclically operating each of said piston and cylinder pumping assemblies in said suction, precompression and discharge cycles; control fluid circuit means for conditioning said power circuit means to cycle said piston and cylinder pumping assemblies; said power circuit means comprising: means for connecting the triplex pump to a power fluid reservoir for providing a source of power fluid; means for connecting the triplex pump to a power fluid pump for delivering pressurized power fluid from said fluid reservoir; flow regulating means operatively connecting the pressurized fluid delivered by said power fluid pump to said plurality of piston and cylinder assemblies and to said reservoir said flow regulating means including: a plurality of power circuit valve means, each for selectively placing one of said piston and cylinder pumping assemblies in unrestricted fluid communication with said pressurized power fluid, in restricted fluid communication with a reduced flow of said pressurized power fluid, or in fluid communication with said fluid reservoir; each of said power circuit valve means comprising: a power fluid inlet valve body having a power fluid entry passage and a power fluid exit passage; a power fluid exhaust valve body having a power fluid entry passage and a power fluid exit passage; precompression valve means having a power fluid entry port, a power fluid output port having a restricted passage, a control fluid pilot port, and means normally blocking the entry port from the output port when contorl fluid pilot pressure exists in the pilot port; the power fluid entry passage of said power fluid inlet valve body and the entry port of said precompression valve means being in continuous communication with pressurized power fluid delivered by said power fluid pump; a common chamber in fluid communication with the power fluid exit passage of said power fluid inlet valve body, and in continuous fluid communication with the power end of a respective one of said piston and cylinder assemblies, with the output port of said precompression valve means, and with the power fluid inlet passage of said power fluid exhaust valve body; the power fluid exit passage of said power fluid exhaust valve body being in continuous communication with said power fluid reservoir; the pilot ports of each of said precompression valve means being in control fluid communication with said control circuit means; power fluid inlet valve means carried by said power fluid inlet valve body for providing selective fluid communication between the power fluid entry passage and the power fluid exit passage of said power fluid inlet valve body; and power fluid exhaust valve means carried by said power fluid exhaust valve body for providing selective fluid communication between the power fluid entry passage and the power fluid exit passage of said power fluid exhaust valve body.
Claim 3
Dependent Claim
111 words
The fluid operated triplex pump as defined in claim 1 wherein said control fluid circuit means comprises: opening and closing actuator chambers associated with each of said power fluid inlet and exhaust valve means: control circuit pump means for selectively delivering opening actuator control fluid to said opening actuator chambers of said power fluid inlet and exhaust valve means so as to place said power fluid inlet and exhaust valve means in their selective communication positions; and control circuit reservoir means for draining control circuit fluid from selected ones of said opening actuator chambers upon movement of selected ones of said power fluid inlet and exhaust valve means to their non-communicating
Claim 4
Dependent Claim
29 words
A triplex pump as defined in claim 2 wherein: control circuit fluid is supplied to said opening actuator chambers of said power fluid exhaust valve means in two stages.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |