IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0648135
(2009-12-28)
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등록번호 |
US-8549984
(2013-10-08)
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발명자
/ 주소 |
|
출원인 / 주소 |
- Fisher Controls International, LLC
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대리인 / 주소 |
Hanley, Flight & Zimmerman, LLC.
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인용정보 |
피인용 횟수 :
2 인용 특허 :
13 |
초록
▼
Apparatus to increase a force of an actuator having an override apparatus are described herein. An example fluid control system includes a first fluid control apparatus to fluidly couple a control fluid supply source to a control actuator via a first passageway. The control fluid supply source provi
Apparatus to increase a force of an actuator having an override apparatus are described herein. An example fluid control system includes a first fluid control apparatus to fluidly couple a control fluid supply source to a control actuator via a first passageway. The control fluid supply source provides a control fluid to move a control actuator member of the control actuator in a first direction or a second direction opposite the first direction when the control actuator is in the operational state. A second fluid control apparatus is in fluid communication with the first fluid control apparatus and is configured to fluidly couple an override actuator to the control actuator via a second passageway when the control actuator is in a non-operational state. The override actuator is operatively coupled to the control actuator.
대표청구항
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1. A fluid control system for use with valves, comprising: a first fluid control apparatus to fluidly couple a control fluid supply source to a control actuator via a first passageway, wherein the control fluid supply source provides a control fluid to move a control actuator member of the control a
1. A fluid control system for use with valves, comprising: a first fluid control apparatus to fluidly couple a control fluid supply source to a control actuator via a first passageway, wherein the control fluid supply source provides a control fluid to move a control actuator member of the control actuator in a first direction or a second direction opposite the first direction when the control actuator is in an operational state; anda second fluid control apparatus in fluid communication with the first fluid control apparatus via a second passageway, the second passageway configured to fluidly couple an override actuator and the control actuator when the control actuator is in a non-operational state such that control fluid flows from the override actuator to the control actuator and a portion of the second passageway captures a fluid pressure in the control actuator when the fluid pressure in the override actuator is less than a predetermined value. 2. A fluid control system of claim 1, further comprising a third fluid passageway to fluidly couple the control fluid supply source to the override actuator to cause the override actuator to move to a stored position when the control actuator is in the operational state. 3. A fluid control system of claim 1, wherein the first fluid control apparatus comprises a first valve system to fluidly couple the control fluid supply source and the control actuator when the control actuator is in an operational state and to fluidly couple the override actuator and the control actuator when the control actuator is in a non-operational state. 4. A fluid control system of claim 3, wherein the first valve system comprises a trip valve, wherein the trip valve allows fluid flow between the first passageway and a first chamber or a second chamber of the control actuator and prevents fluid flow between the second passageway and the first chamber of the control actuator when the control actuator is in the operational state. 5. A fluid control system of claim 4, wherein the trip valve allows fluid flow between the third passageway and the first chamber of the control actuator and prevents fluid flow between the first passageway and the first chamber or the second chamber of the control actuator when the control actuator is in the non-operational state. 6. A fluid control system of claim 3, wherein the first valve system comprises a plurality of three-way valves. 7. A fluid control system for use with valves, comprising: a first fluid control apparatus to fluidly couple a control fluid supply source to a control actuator via a first passageway, the control fluid supply source to provide a control fluid to move a control actuator member of the control actuator in a first direction or a second direction opposite the first direction when the control actuator is in an operational state, the first fluid control apparatus having a first valve system to fluidly couple the control fluid supply source and the control actuator when the control actuator is in the operational state and to fluidly couple an override actuator and the control actuator when the control actuator is in a non-operational state, the first valve system comprising a plurality of three-way valves; anda second fluid control apparatus in fluid communication with the first fluid control apparatus and configured to fluidly couple the override actuator to the control actuator via a second passageway when the control actuator is in the non-operational state, wherein the override actuator is operatively coupled to the control actuator, and wherein, when the control actuator is in the operational state, a first valve of the plurality of valves allows fluid flow between the first passageway and a control unit, a second valve of the plurality of valves allows fluid flow between a first output of the control unit and a first chamber of the control actuator, and a third valve of the plurality of valves allows fluid flow between a second output of the control unit and a second chamber of the control actuator. 8. A fluid control system of claim 7 wherein, when the control actuator is in a non-operational state, the first valve of the plurality of valves is configured to allow fluid flow between the second passageway and the second valve of the plurality of valves and prevent fluid flow to the control unit, and the second valve of the plurality of valves is configured to allow fluid flow from the second passageway to the first chamber of the control actuator and prevent fluid flow between the first chamber and the control unit. 9. A fluid control system for use with valves, comprising: a first fluid control apparatus to fluidly couple a control fluid supply source to a control actuator via a first passageway, the control fluid supply source to provide a control fluid to move a control actuator member of the control actuator in a first direction or a second direction opposite the first direction when the control actuator is in an operational state; anda second fluid control apparatus in fluid communication with the first fluid control apparatus and configured to fluidly couple an override actuator to the control actuator via a second passageway when the control actuator is in a non-operational state, wherein the override actuator is operatively coupled to the control actuator, the second fluid control apparatus having a valve system disposed along the second passageway between the override actuator and the first fluid control apparatus to selectively enable control fluid in the override actuator to flow to the first fluid control apparatus when the pressure of the control fluid in the override actuator is greater than a predetermined pressure value, and wherein the second valve system selectively enables the control fluid within the override actuator to vent to the atmosphere when the pressure of the control fluid in the override actuator is below a predetermined value. 10. A fluid control system of claim 9, wherein the valve system comprises a three-way valve having a first port fluidly coupled to a third chamber of the override actuator, a second port fluidly coupled to the first fluid control apparatus, and a third port in fluid communication with the atmosphere. 11. A fluid control system, comprising; a passageway to fluidly couple a control fluid to a control actuator and to an override actuator operatively coupled to the control actuator, wherein the control fluid causes the override actuator to move to a stored position and causes the control actuator to move between a first position and a second position when the control actuator is in an operational state; anda fluid control apparatus coupled to the passageway to prevent fluid flow between the control actuator and the override actuator when the control actuator is in the operational state and to fluidly couple the override actuator to the control actuator to enable fluid flow between the control actuator and the override actuator when the control actuator is in a non-operational state so that the control fluid from the override actuator acts upon the control actuator to increase a force provided by the control actuator when the control actuator is in a non-operational state. 12. A fluid control system of claim 11, wherein the fluid control apparatus comprises a first valve system in fluid communication with a second valve system, wherein the first valve system is disposed between a control fluid supply source and a first chamber of the control actuator, wherein the first valve system selectively provides the control fluid to the first chamber and prevents fluid flow between the override actuator and the first chamber of the control actuator when the control actuator is in the operational state. 13. A fluid control system of claim 12, wherein the second valve system enables the control fluid to flow from the override actuator to the first chamber of the control actuator when the control actuator is in the non-operational state and allows the control fluid within the override actuator to vent to the atmosphere when the pressure of the control fluid in the override actuator is below a predetermined pressure. 14. A fluid control system of claim 13, wherein the second valve system comprises a three-way valve having a first port in fluid communication with the fluid supply source and the override actuator, a second port in fluid communication with the first valve system, and a third port in fluid communication with the atmosphere. 15. A fluid control system of claim 14, further comprising a one-way valve disposed between the override actuator and the control fluid supply source to prevent fluid flow from the override actuator to the control fluid supply source and direct the fluid from the override actuator to the first port. 16. A fluid control system of claim 12, wherein the first valve system comprises a trip valve disposed between the control fluid supply source and the control actuator, wherein the trip valve is configured to selectively allow fluid flow between the control fluid supply source and the first chamber of the control actuator and prevent fluid flow from the second valve system to the first chamber of the control actuator when the control actuator is in the operational state, and wherein the trip valve is configured to selectively prevent fluid flow between the control fluid supply source and the first chamber and allow fluid flow from the first valve system to the first chamber when the control actuator is in the non-operational state. 17. A fluid control system of claim 12, wherein the first valve system comprises at least one three-way valve, wherein the at least one three-way valve is configured to selectively enable fluid flow between the control fluid supply source and the first chamber of the control actuator and prevent fluid flow between the override actuator and the first chamber when the control actuator is in the operational state, and wherein the at least the three-way valve is configured to selectively enable fluid flow between the override actuator and the first chamber and prevent fluid flow between the control fluid supply source and the first chamber when the control actuator is in the non-operational state. 18. A fluid control system comprising: first means for fluidly coupling a pressurized control fluid to a control actuator when the control actuator is in an operational state, wherein the control fluid is to cause the control actuator to move between a first position and a second position; andsecond means for fluidly coupling the pressurized control fluid to an override apparatus to cause the override apparatus to move to a stored position when the control actuator is in the operational state, wherein the second means for fluidly coupling selectively enables fluid flow from the override apparatus to the first means for fluidly coupling, and wherein the first means for fluidly coupling selectively enables fluid flow from the second means for fluidly coupling to the control actuator when the control actuator is in a non-operational state, and wherein the second means for fluidly coupling captures a fluid pressure in the control actuator when the control actuator is in the non-operational state and when fluid pressure in the override actuator is less than a predetermined pressure. 19. A fluid system of claim 18, wherein the first means for fluidly coupling comprises a means for moving a first flow control member between a first position to allow the control fluid to flow from the control fluid supply source to the control actuator via a first passageway and prevent the control fluid from flowing from the override apparatus to the control actuator via a second passageway when the control actuator is in an operational state, and a second position to allow the control fluid to flow from the override apparatus to the control actuator via the second passageway when the control actuator is in a nonoperational state. 20. A fluid system of claim 18, wherein the second means for fluidly coupling comprises a means for moving a second flow control member between a first position to allow the control fluid to flow from the override actuator to the control actuator when the pressure of the control fluid in the override actuator is greater than a predetermined pressure value, and a second position to prevent the control fluid from flowing from the override actuator to the control actuator when the pressure of the control fluid in the override actuator is below the predetermined pressure value.
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