Pressure and flow altitude compensated shutoff valve
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-017/36
F16K-031/122
F16K-031/124
F16K-001/12
F01D-025/18
출원번호
US-0479889
(2012-05-24)
등록번호
US-9080687
(2015-07-14)
발명자
/ 주소
Franconi, Robert
Banta, Paul
Lam, Cecilia Sum
출원인 / 주소
HONEYWELL INTERNATIONAL INC.
대리인 / 주소
Ingrassia Fisher & Lorenz, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
A pressure and flow altitude compensated shut off valve includes a valve body, a valve element, and an altitude compensation pilot valve. The valve body has an inlet port, an outlet port, and a flow passage extending between the inlet port and the outlet port. The valve element is disposed within th
A pressure and flow altitude compensated shut off valve includes a valve body, a valve element, and an altitude compensation pilot valve. The valve body has an inlet port, an outlet port, and a flow passage extending between the inlet port and the outlet port. The valve element is disposed within the flow passage and is responsive to fluid pressure at the inlet port to move between a closed position, in which fluid may not flow through the flow passage, and a plurality of open positions between the closed position and a full-open position. The altitude compensation pilot valve is coupled to the valve body and is responsive to pressure variations at the second port to control the fluid pressure at which the valve element moves to the closed and open positions.
대표청구항▼
1. A valve, comprising: a valve body having an inlet port, an outlet port, and a flow passage extending between the inlet port and the outlet port;a valve element disposed within the flow passage and responsive to fluid pressure at the inlet port to move between a closed position, in which fluid doe
1. A valve, comprising: a valve body having an inlet port, an outlet port, and a flow passage extending between the inlet port and the outlet port;a valve element disposed within the flow passage and responsive to fluid pressure at the inlet port to move between a closed position, in which fluid does not flow through the flow passage, and a plurality of open positions between the closed position and a full-open position;an altitude compensation pilot valve coupled to the valve body and including at least a first port, a second port, and a third port, the first port in fluid communication with the inlet port, the second port adapted to be in fluid communication with a reference pressure source, the third port in fluid communication with the main piston cavity, the altitude compensation pilot valve responsive to pressure variations at the second port to control the fluid pressure at which the valve element moves to the closed and open positions; anda main piston cavity formed in the valve body and in fluid communication with the altitude compensation pilot valve, the piston cavity having a first portion of the valve element disposed therein,wherein: the altitude compensation pilot valve further includes a third port that is in fluid communication with the main piston cavity, andthe altitude compensation pilot valve is responsive to pressure variations at the second port to selectively place the main piston cavity in fluid communication with one of the inlet port or the second port. 2. The valve of claim 1, wherein the altitude compensation pilot valve comprises: a compensation piston cavity formed in the valve body, the compensation piston cavity in fluid communication with the first port and including a fourth port that is adapted to be in fluid communication with the reference pressure source;a compensation piston disposed within the compensation piston cavity and movable therein in response to a difference in fluid pressure between the first port and the fourth port; anda pilot valve element coupled to the compensation piston and movable therewith between an equalization position, in which the third port is in fluid communication with the first port and is fluidly isolated from the second port, and a vent position, in which the third port is in fluid communication with the second port and is fluidly isolated from the first port. 3. The valve of claim 2, wherein the altitude compensation pilot valve further comprises an evacuated bellows coupled to the valve body and responsive to pressure variations of the reference pressure source to selectively move the pilot valve element between the equalization and vent positions. 4. The valve of claim 2, wherein the altitude compensation pilot valve further comprises a compensation spring element disposed within the compensation piston cavity and supplying a bias force to the compensation piston that biases the pilot valve element toward the equalization position. 5. The valve of claim 1, further comprising: a main spring element disposed within the main piston cavity and supplying a bias force to the valve element that biases the valve element toward the full-open position. 6. The valve element of claim 5, further comprising: a valve seat extending into the flow passage and dividing the flow passage into an inlet cavity and an outlet cavity;a primary seal coupled to a first portion of the valve element, the primary seal disposed within and engaging the main piston cavity;a secondary seal retainer formed in the valve body and spaced apart from the main piston cavity; anda secondary seal surrounding a second portion the valve element and disposed within the secondary seal retainer. 7. The valve of claim 6, wherein: the valve element includes an annular seating surface that engages the valve seat when the valve is in the closed position, the annular seating surface having a first diameter;the first portion of the valve element comprises a piston coupled to the valve element and movably disposed within the main piston cavity, the piston including an annular sealing surface having the first diameter; andthe second portion of the valve element having a second diameter that is less than the first diameter. 8. The valve of claim 1, further comprising: a stroke limiter coupled to the valve body and responsive to pressure variations of the reference pressure source to control the full-open position of the valve element. 9. The valve of claim 8, further comprising: a stroke limiter cavity formed in the valve body, the stroke limiter cavity having a second portion of the valve element and the stroke limiter disposed therein, the stroke limiter cavity in fluid communication with the reference pressure source; anda channel formed in and extending through the valve element, the channel including a first valve element port and a second valve element port, the first valve element port in fluid communication with the main piston cavity, the second valve element port in fluid communication with the stroke limiter cavity. 10. The valve of claim 9, wherein the stroke limiter comprises: a stroke limiting relief valve disposed within the channel proximate the second port and movable between a first position, in which the stroke limiter cavity is fluidly isolated from the main piston cavity, and a second position, in which the stroke limiter cavity is in fluid communication with the main piston cavity; andan evacuated bellows responsive to pressure variations of the reference pressure source to selectively move the stroke limiting relief valve between the first and second positions. 11. A valve, comprising: a valve body having an inlet port, an outlet port, and a flow passage extending between the inlet port and the outlet port;a valve element disposed within the flow passage and responsive to fluid pressure at the inlet port to move between a closed position, in which fluid does not flow through the flow passage, and a plurality of open positions between the closed position and a full-open position;an altitude compensation pilot valve coupled to the valve body and including at least a first port and a second port, the first port in fluid communication with the inlet port, the second port adapted to be in fluid communication with a reference pressure source, the altitude compensation pilot valve responsive to pressure variations at the second port to control the fluid pressure at which the valve element moves to the closed and open positions; anda stroke limiter coupled to the valve body and responsive to pressure variations of the reference pressure source to control the full-open position of the valve element. 12. The valve of claim 11, further comprising: a main piston cavity formed in the valve body and in fluid communication with the altitude compensation pilot valve, the piston cavity having a portion of the valve element disposed therein;a main spring element disposed within the main piston cavity and supplying a bias force to the valve element that biases the valve element toward the full-open position;a valve seat extending into the flow passage and dividing the flow passage into an inlet cavity and an outlet cavity;a primary seal coupled to a first portion of the valve element, the primary seal disposed within and engaging the main piston cavity;a secondary seal retainer formed in the valve body and spaced apart from the main piston cavity; anda secondary seal surrounding a second portion the valve element and disposed within the secondary seal retainer, wherein: the valve element includes an annular seating surface that engages the valve seat when the valve is in the closed position, the annular seating surface having a first diameter;the first portion of the valve element comprises a piston coupled to the valve element and movably disposed within the main piston cavity, the piston including an annular sealing surface having the first diameter; andthe second portion of the valve element having a second diameter that is less than the first diameter. 13. The valve of claim 12, wherein the altitude compensation pilot valve comprises: a third port that is in fluid communication with the main piston cavity;a compensation piston cavity formed in the valve body, the compensation piston cavity in fluid communication with the first port and including a fourth port that is adapted to be in fluid communication with the reference pressure source;a compensation piston disposed within the compensation piston cavity and movable therein in response to a difference in fluid pressure between the first port and the fourth port;a pilot valve element coupled to the compensation piston and movable therewith between an equalization position, in which the third port is in fluid communication with the first port and is fluidly isolated from the second port, and a vent position, in which the third port is in fluid communication with the second port and is fluidly isolated from the first port;a compensation spring element disposed within the compensation piston cavity and supplying a bias force to the compensation piston that biases the pilot valve element toward the equalization position; andan evacuated bellows coupled to the valve body and responsive to pressure variations of the reference pressure source to selectively move the pilot valve element between the equalization and vent positions. 14. The valve element of claim 13, further comprising: a spring element cavity formed in the valve body and having the spring element disposed therein, the spring element cavity in fluid communication with ambient fluid pressure;an altitude compensator cavity formed in the valve body and having the altitude compensator disposed therein, the altitude compensator cavity in fluid communication with ambient fluid pressure; anda stroke limiter cavity formed in the valve body and having the stroke limiter disposed therein, the stroke limiter cavity in fluid communication with ambient fluid pressure. 15. The valve of claim 12, further comprising: a stroke limiter cavity formed in the valve body, the stroke limiter cavity having a second portion of the valve element and the stroke limiter disposed therein, the stroke limiter cavity in fluid communication with the reference pressure source; anda channel formed in and extending through the valve element, the channel including a first valve element port and a second valve element port, the first valve element port in fluid communication with the main piston cavity, the second valve element port in fluid communication with the stroke limiter cavity. 16. The valve of claim 15, wherein the stroke limiter comprises: a stroke limiting relief valve disposed within the channel proximate the second port and movable between a first position, in which the stroke limiter cavity is fluidly isolated from the main piston cavity, and a second position, in which the stroke limiter cavity is in fluid communication with the main piston cavity; andan evacuated bellows responsive to pressure variations of the reference pressure source to selectively move the stroke limiting relief valve between the first and second positions. 17. The valve element of claim 15, further comprising: a valve seat extending into the flow passage and dividing the flow passage into an inlet cavity and an outlet cavity;a primary seal coupled to the valve element and disposed within the spring element cavity, the primary seal isolating fluid pressure in the outlet cavity from ambient fluid pressure in the spring element cavity; anda secondary seal coupled to the valve element and disposed within the stroke limiter cavity, the secondary seal isolating fluid pressure in the inlet cavity from ambient fluid pressure, wherein: the valve element has an annular seating surface that engages the valve seat when the valve is in the closed position;the annular seating surface has a first diameter;the valve further comprises a piston coupled to the valve element and movably disposed within the spring element cavity;the piston has an annular sealing surface; andthe annular sealing surface has the first diameter. 18. A valve, comprising: a valve body having an inlet port, an outlet port, and a flow passage extending between the inlet port and the outlet port;a valve element disposed within the flow passage and responsive to fluid pressure at the inlet port to move between a closed position, in which fluid does not flow through the flow passage, and a plurality of open positions between the closed position and a full-open position;a spring element engaging the valve body and the valve element and supplying a bias force to the valve element that biases the valve element toward the full-open position;an altitude compensator bellows coupled to the valve body and the valve element and configured, in response to ambient pressure, to vary the fluid pressure at which the valve element moves to the closed and open positions; anda stroke limiter bellows coupled to the valve body and configured, in response to ambient pressure, to vary the full-open position of the valve element.
McInerney Charles E. (Rolling Hills Estates CA), Turbocharged internal combustion engine having an altitude compensated boost control and method for its operation.
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