IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0131987
(2008-06-03)
|
등록번호 |
US-8220479
(2012-07-17)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
8 |
초록
▼
A multi-stage pressure regulator in which pressure is first reduced by a set ratio in one or more stages followed by an adjustable pressure output stage. The system of the present invention provides for distribution of the Joules-Thomson (JT) cooling effect between multiple stages. The present inven
A multi-stage pressure regulator in which pressure is first reduced by a set ratio in one or more stages followed by an adjustable pressure output stage. The system of the present invention provides for distribution of the Joules-Thomson (JT) cooling effect between multiple stages. The present invention thereby provides a system to control pressure reduction and thus prevent condensation (and associated distortion of a vapor composition sample) of a gas due to J-T cooling effect.
대표청구항
▼
1. A method for regulating the pressure of a fluid comprising the steps of: a. providing a first pressure regulator, comprising a piston having first and second ends having unequal surface areas;b. allowing a fluid to apply fluid pressure to said first and second ends of said piston, providing a for
1. A method for regulating the pressure of a fluid comprising the steps of: a. providing a first pressure regulator, comprising a piston having first and second ends having unequal surface areas;b. allowing a fluid to apply fluid pressure to said first and second ends of said piston, providing a force differential in the amount of force applied to said first and second piston ends due to their unequal surface areas;c. utilizing said force differential to facilitate movement of said piston, so as to facilitate throttling of said fluid flow when the force exerted upon one end of said piston is greater than the force exerted by the other end of said piston; whiled. providing a zone between the first and second ends of said piston which is referenced at a fluid reference pressure to influence said force differential applied to said first and second piston ends, and the resulting flow of fluid associated therewith;e. providing a second pressure regulator in fluid communication with said first pressure regulator;f. utilizing said second pressure regulator to provide regulated output; andg. utilizing said regulated output to produce said fluid reference pressure of step “d”. 2. The method of claim 1 wherein there is further provided in step “b” of flowing said fluid between said first end and second end of said piston via a passage internal to said piston, and wherein, in step “d”, said reference pressure in said zone between said first and second ends of said piston is provided to influence the flow of said fluid through said piston, so as to lessen the likelihood of Joules-Thomson cooling thereof. 3. The method of claim 1, wherein in step “e” said second pressure regulator is situated downstream from, and in series fluid communication with, said first pressure regulator. 4. The method of claim 3, wherein there is provide in step “e” the additional step “e1” of providing one or more pressure regulators in series fluid communication with, and situated intermediate to, said first pressure regulator and said second pressure regulator. 5. The method of claim 1 wherein, after step “e”, there is further provided the step “e2” of thermally affecting said first pressure regulated fluid to lessen the likelihood of Joules-Thomson cooling thereof. 6. The method of claim 1, wherein in step “e”, said second pressure regulator is of the diaphragm/load spring type. 7. A fluid pressure regulator system, comprising: a first pressure regulator, comprising: a piston disposed within a cylinder cavity, said piston having a first end and a second end, and wherein the surface area of said first piston end is different than the surface area of said second piston end so as to facilitate movement in said piston when equal fluid pressure is applied to both said first and second piston ends,first and second fluid seals spaced to form a fluid zone situated around said piston between said first and second piston ends, respectively;a piston fluid passage providing fluid communication between said second piston end and said first piston end;a fluid passage formed to admit fluid against said first piston end;and a passage formed to facilitate the flow of fluid from said first piston end to said second piston end;an adjustable a pressure regulator in series fluid communication with said first pressure regulator, said pressure regulator having an output in fluid communication with said fluid zone between said first and second piston ends of said first pressure regulator, so as to influence the operation thereof. 8. A method for regulating the pressure of a fluid comprising the steps of: a. providing a first pressure regulator comprising: i. a body having a cylinder cavity;ii. a piston disposed within said cylinder cavity of said body, said piston having a first end and a second end each having a surface area, said surface area of said first piston end being unequal in size to said surface area of said second piston end;iii. a first fluid passage associated with said body for admitting fluid against said first piston end;iv. said piston having formed therethrough a piston flow passage for fluid to flow from said first piston end to second piston end;v. a first fluid seal around said piston situated in the vicinity of said first piston end and a second fluid seal around said piston situated toward said second piston end, so as to form a fluid zone therebetween;b. allowing fluid to flow, via said first fluid passage, to said first end of said piston, so as to apply fluid pressure to said first end of said piston;c. flowing fluid through said piston fluid passage formed through said piston from said first end of said piston to said second end of said piston, so as to apply fluid pressure to said second end of said piston;d. allowing fluid pressure applied to said greater surface area of said second piston end to form an unbalance of forces resulting from the application of fluid pressure to said first and second piston ends having unequal surface areas;e. regulating the fluid flow via said fluid pressure applied to said first and second piston ends having unequal areas so as to reposition said piston such that throttling of the flow of said fluid is increased when the force exerted by one end of said piston is greater than the force exerted by the other end of said piston, providing regulated fluid flow;f. providing a reference pressure in said fluid zone to influence the flow of fluid through said piston;g. providing an second pressure regulator downstream said first pressure regulator in series relationship;h. flowing said regulated fluid flow from said first pressure regulator to said second pressure regulator, so as to provide regulated pressure fluid; andi. utilizing said regulated pressure fluid as said reference pressure of step “f,”. 9. The method of claim 8, wherein said second regulator is adjustable. 10. The method of claim 9, wherein there is provided in step “e,” the additional step “el,” of thermally affecting said regulated fluid flow so as to prevent Joules-Thomson cooling thereof. 11. The method of claim 8, wherein after step “f,” there is provided the additional step “fi” of providing a heat exchanger to engage said fluid flowing from said first pressure regulator to said second fluid pressure regulator, and step “fii” of utilizing said heat exchanger to thermally effect said fluid flowing from said first pressure regulator to said second fluid pressure regulator, so as to minimize Joules-Thomson cooling. 12. The method of claim 9, wherein after step 37 f,” there is provided the additional step “fi” of providing a heat exchanger to engage said fluid flowing from said first pressure regulator to said adjustable pressure regulator, and step “fii” of utilizing said heat exchanger to thermally effect said fluid flowing from said first pressure regulator to said adjustable pressure regulator, so as to minimize Joules-Thomson cooling. 13. The method of claim 8, wherein in step “aii” said second piston end has a greater surface area than said first piston end, and wherein in step “e” said fluid pressure is applied to said first and second piston ends such that said second piston end, having greater surface area than said first piston end, receiving a greater application of force from said fluid pressure so as to reposition said piston throttle said fluid flow, providing said regulated fluid flow. 14. The method of claim 8, wherein there is provide after step “g,” the additional step “g1,” of providing one or more pressure regulators in series fluid communication with, and situated intermediate to, said first pressure regulator and said second pressure regulator.
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