[특허]Intake pressure control system

McLoughlin, John E.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Intake pressure control system

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-049/08 F04B-017/05 F04B-049/06 F04B-049/20 F04B-049/24 A62C-031/00
출원번호	US-0433734 (2017-02-15)
등록번호	US-10018195 (2018-07-10)
발명자 / 주소	McLoughlin, John E.
출원인 / 주소	McLoughlin, John E.
대리인 / 주소	Heim, Louise S.
인용정보	피인용 횟수 : 0 인용 특허 : 6

초록

A pump intake pressure control apparatus includes a conduit joining a pump to a liquid source, a flow controller configured to control the flow of liquid through the conduit, pressure sensors for detecting the pressure of the liquid in the conduit upstream and downstream of the flow controller, and an electronic master controller programmed to receive input from the pressure sensors and to actuate the flow controller to reduce the pressure downstream of the flow controller to a predetermined approximate value.

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1. An apparatus for controlling the pressure of liquid entering a pump coupled to a liquid source, comprising: a conduit conducting liquid from the liquid source to the pump, the conduit including a bifurcated section having a first branch conducting liquid towards the pump,a second branch conducting liquid towards the pump,an inlet end wherein the conduit splits to form the first and second branches, andan outlet end wherein the first and second branches converge;a valve configured to control the flow of liquid through the first branch;pressure sensors for detecting the pressure of liquid in the conduit upstream and downstream of the bifurcated section; andan electronic master controller programmed to receive input from the pressure sensors and to actuate the valve to reduce the pressure downstream of the bifurcated section to a predetermined approximate value. 2. The apparatus according to claim 1, further comprising a second valve configured to control the flow of liquid in the second branch. 3. The apparatus according to claim 2, wherein the first valve is located in the first branch and the second valve is located in the second branch. 4. The apparatus according to claim 2, wherein the electronic master controller is programmed to actuate the first and second valves independently of one another. 5. The apparatus according to claim 1, further comprising: a position indicator configured to detect the position of the valve;wherein the electronic master controller is configured to receive input from the position indicator. 6. The apparatus according to claim 2, further comprising: a first position indicator configured to detect the position of the first valve; anda second position indicator configured to detect the position of the second valve;wherein the electronic master controller is configured to receive input from the first and second position indicators. 7. The apparatus according to claim 1, wherein one of the branches of the conduit has a larger cross-sectional area than the other branch of the conduit. 8. An intake pressure control system for controlling the flow of liquid into a pump, comprising: a pressurized liquid source;a conduit conducting liquid from the pressurized liquid source to the pump, the conduit including a bifurcated section having; a first branch conducting liquid towards the pump,a second branch conducting liquid towards the pump,an inlet end wherein the conduit splits to form the first and second branches, andan outlet end wherein the first and second branches converge;a valve located in the first branch of the conduit and configured to control the flow of liquid through the conduit;a first pressure sensor located between the pressurized liquid source and the valve, and configured to detect a pressure p1 of liquid in the conduit upstream of the valve;a second pressure sensor located between the valve and the pump and configured to detect a pressure p2 of the liquid in the conduit at a position between the valve and the pump; andan electronic master controller programmed to receive input from the pressure sensors and to actuate the valve to reduce the pressure p2 to a predetermined approximate value. 9. The intake pressure control system according to claim 8, wherein the valve is a first valve, and further comprising a second valve located in the second branch. 10. The intake pressure control system according to claim 8, further comprising: a discharge conduit configured to discharge liquid from the pump; anda third pressure sensor adapted to detect a pressure p3 of liquid in the discharge conduit;wherein the electronic master controller is programmed to receive input from the first, second, and third pressure sensors and to control p2 and p3 accordingly. 11. The intake pressure control system according to claim 9, wherein the master controller is programmed to operate the second valve independently of the first valve. 12. The intake pressure control system according to claim 9, further comprising: a first position indicator configured to detect the position of the first valve; anda second position indicator configured to detect the position of the second valve;wherein the electronic master controller is configured to receive input from the first and second position indicators. 13. The intake pressure control system according to claim 8, wherein one of the branches of the conduit has a larger cross-sectional area than the other branch of the conduit. 14. The intake pressure control system according to claim 10, further comprising: an engine having a variable engine speed and configured to drive the pump; anda governor coupled to the engine and the master controller, and configured to adjust the speed of the engine to control p3. 15. An intake pressure control system for controlling the flow of fluids into a pump, comprising: an unpressurized liquid source;a conduit conducting liquid from the unpressurized liquid source to the pump, the conduit including a bifurcated section having; a first branch conducting liquid towards the pump,a second branch conducting liquid towards the pump,an inlet end wherein the conduit splits to form the first and second branches, andan outlet end wherein the first and second branches converge;a valve located in the first branch of the conduit and configured to control the flow of liquid through the conduit;a first pressure sensor located between the pressurized liquid source and the valve, and configured to detect the pressure of liquid in the conduit upstream of the valve;a second pressure sensor located between the valve and the pump; andan electronic master controller programmed to receive input from the pressure sensors and to actuate the valve to reduce the pressure downstream of the valve to a predetermined negative value. 16. The intake pressure control system according to claim 15, wherein the valve is a first valve, and further comprising a second valve located in the second branch. 17. The intake pressure control system according to claim 15, further comprising: a discharge conduit configured to discharge liquid from the pump; anda third pressure sensor adapted to detect a pressure p3 of liquid in the discharge conduit;wherein the electronic master controller is programmed to receive input from the first, second, and third pressure sensors and to control p2 and p3 accordingly. 18. The intake pressure control system according to claim 16, wherein the master controller is programmed to operate the second valve independently of the first valve. 19. The intake pressure control system according to claim 15, further comprising: an additive tank containing an additive;an additive line coupling the additive tank to the conduit at a location between the valve and the pump;wherein the negative pressure downstream of the valve causes the additive to be siphoned through the additive line into the conduit, where it mixes with liquid. 20. The intake pressure control system according to claim 19, further comprising a calibrated valve in the additive line configured to control an amount of additive entering in proportion to liquid.

인용문헌 (6)

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Intake pressure control system

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Intake pressure control system

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