CA2302607A1 - Intelligent pressure regulator - Google Patents
Intelligent pressure regulator Download PDFInfo
- Publication number
- CA2302607A1 CA2302607A1 CA 2302607 CA2302607A CA2302607A1 CA 2302607 A1 CA2302607 A1 CA 2302607A1 CA 2302607 CA2302607 CA 2302607 CA 2302607 A CA2302607 A CA 2302607A CA 2302607 A1 CA2302607 A1 CA 2302607A1
- Authority
- CA
- Canada
- Prior art keywords
- pressure
- fluid
- throttling element
- regulator
- pressure regulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2093—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
- G05D16/2095—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power using membranes within the main valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7761—Electrically actuated valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7769—Single acting fluid servo
- Y10T137/777—Spring biased
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7793—With opening bias [e.g., pressure regulator]
- Y10T137/7797—Bias variable during operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7793—With opening bias [e.g., pressure regulator]
- Y10T137/7822—Reactor surface closes chamber
- Y10T137/7823—Valve head in inlet chamber
- Y10T137/7825—Rectilinear valve stem rigid with reactor surface
Abstract
An intelligent pressure regulator for maintaining a fluid in a process at a predetermined pressure includes an electronic controller which enhances regulator performance and provides self-diagnostics and communications capabilites. The electronic controller includes a pressure sensor which provides a signal indicating the pressure of the fluid being controlled, an adjusting pressure for adjusting the position of a throttling element; and a PID controller which receives the signal indicating the pressure of the fluid being controlled and applies the adjusting pressure to the actuator in response to the signal.
Claims (20)
1. A self adjusting pressure regulator for maintaining a fluid at a desired pressure comprising:
a body defining a fluid flow passage;
a throttling element movable within the flow passage for selectively restricting fluid flow through the flow passage;
a pre-set actuator coupled to the throttling member that applies a pre-set force to the throttling member, the pre-set force corresponding to an estimated force required to position the throttling member to achieving the desired pressure;
a pressure sensor that provides an indication of the sensed pressure of the fluid to be maintained at a desired pressure; and an adjustable actuator coupled to the pressure sensor and adapted to apply a force to the throttling element, the adjustable actuator providing a force to the throttling element that varies with the difference between the sensed pressure and the desired pressure such that the throttling member is moved to reduce any difference between the sensed pressure and the desired pressure.
a body defining a fluid flow passage;
a throttling element movable within the flow passage for selectively restricting fluid flow through the flow passage;
a pre-set actuator coupled to the throttling member that applies a pre-set force to the throttling member, the pre-set force corresponding to an estimated force required to position the throttling member to achieving the desired pressure;
a pressure sensor that provides an indication of the sensed pressure of the fluid to be maintained at a desired pressure; and an adjustable actuator coupled to the pressure sensor and adapted to apply a force to the throttling element, the adjustable actuator providing a force to the throttling element that varies with the difference between the sensed pressure and the desired pressure such that the throttling member is moved to reduce any difference between the sensed pressure and the desired pressure.
2. The self adjusting pressure regulator of claim 1 wherein the pre-set actuator comprises a spring.
3. The self adjusting pressure regulator of claim 1 wherein the adjustable actuator comprises a current to pressure converter that receives an electrical signal corresponding to the difference between the sensed pressure and the desired pressure and provides an output pneumatic pressure and wherein the throttling element is configured such that the output pneumatic pressure exerts a force on the throttling element.
4. The self adjusting regulator of claim 1 further comprising a communications circuit for providing a communication signal to external communication devices, wherein the communications signal corresponds to the difference between the sensed pressure and the desired pressure.
5. A pressure regulator for maintaining a fluid in a process at a predetermined pressure comprising:
a body defining fluid inlet, a fluid outlet, and a fluid flow passage in fluid connection with the inlet and the outlet;
a throttling element moveable within the flow passage for selectively restricting fluid flow through the flow passage;
an actuator coupled to the throttling element for selectively moving the throttling element, the actuator having a control side and a reference side;
a reference load coupled to the reference side of the actuator for biasing the throttling element to a predetermined reference position;
a feedback line for applying pressure from the fluid in the process to the control side of the actuator for moving the actuator against the reference load to position the throttling element within the flow passage;
a pressure sensor which provides a signal indicating the pressure of the fluid in the process;
a controller which receives the signal indicating the pressure of the fluid and outputs an adjustment signal representing an adjustment to the throttling element in response to the difference between the sensed pressure and the predetermined level; and an adjusting mechanism for further positioning the throttling element in response to the adjustment signal output by the controller.
a body defining fluid inlet, a fluid outlet, and a fluid flow passage in fluid connection with the inlet and the outlet;
a throttling element moveable within the flow passage for selectively restricting fluid flow through the flow passage;
an actuator coupled to the throttling element for selectively moving the throttling element, the actuator having a control side and a reference side;
a reference load coupled to the reference side of the actuator for biasing the throttling element to a predetermined reference position;
a feedback line for applying pressure from the fluid in the process to the control side of the actuator for moving the actuator against the reference load to position the throttling element within the flow passage;
a pressure sensor which provides a signal indicating the pressure of the fluid in the process;
a controller which receives the signal indicating the pressure of the fluid and outputs an adjustment signal representing an adjustment to the throttling element in response to the difference between the sensed pressure and the predetermined level; and an adjusting mechanism for further positioning the throttling element in response to the adjustment signal output by the controller.
6. The pressure regulator of claim 5 wherein the feedback line applies pressure from the fluid in the process downstream of the regulator
7. The pressure regulator of claim 5 wherein the actuator comprises a diaphragm.
8. The pressure regulator of claim 7 wherein the adjusting mechanism comprises a current to pressure converter which provides pneumatic pressure to the reference side of the actuator in response to the controller.
9. The pressure regulator of claim 5 wherein the reference load comprises a spring.
10. An electronic controller for a pressure regulator that uses the pressure of a fluid in a process to position a throttling element to restrict fluid flow through the pressure regulator, the electronic controller comprising:
a pressure sensor which provides a signal indicating the pressure of the fluid being controlled;
a processor which receives the signal indicating the pressure of the fluid being controlled and outputs a signal representing an adjustment to the throttling element in response to the difference between the sensed pressure and a predetermined pressure level; and an adjusting mechanism coupled to the processor and adapted to apply a force to the throttling element for adjusting the position of the throttling element in response to the signal output by the processor.
a pressure sensor which provides a signal indicating the pressure of the fluid being controlled;
a processor which receives the signal indicating the pressure of the fluid being controlled and outputs a signal representing an adjustment to the throttling element in response to the difference between the sensed pressure and a predetermined pressure level; and an adjusting mechanism coupled to the processor and adapted to apply a force to the throttling element for adjusting the position of the throttling element in response to the signal output by the processor.
11. The electronic controller of claim 10 wherein the adjustment mechanism comprises a current to pressure converter that provides an output pneumatic pressure to the pressure regulator, wherein the pneumatic pressure from the controller results in an adjustment of the position of the throttling element
12. The electronic controller of claim 10 further comprising a power supply for powering the processor, wherein the power supply comprises a generator which uses the fluid in the process as an energy source.
13. The electronic controller of claim 10 wherein the electronic controller further comprises a memory structure, wherein the controller is adapted to store digital data concerning the operation of the pressure regulator in the memory structure, and wherein the controller includes a communications circuit for communication at least some of the stored digital data to devices external to the electronic controller.
14. A method for compensating for offset in a pressure regulator which uses the pressure of a fluid to position a throttling element to restrict flow of the fluid through the pressure regulator, the method comprising the acts of:
determining the pressure of the fluid being controlled;
calculating an error value by comparing the pressure of the fluid being controlled to a desired predetermined pressure level;
converting the error value to an adjusting pressure;
repositioning the throttling element by applying the adjusting pressure in addition to the pressure of the fluid being controlled to the throttling element.
determining the pressure of the fluid being controlled;
calculating an error value by comparing the pressure of the fluid being controlled to a desired predetermined pressure level;
converting the error value to an adjusting pressure;
repositioning the throttling element by applying the adjusting pressure in addition to the pressure of the fluid being controlled to the throttling element.
15. An electronic controller for a pressure regulator that uses the pressure of a fluid being controlled to position a throttling element to restrict flow of the fluid through the pressure regulator, the electronic controller comprising:
means for sensing the pressure of the fluid being controlled;
means for determining the difference between the pressure of the fluid being controlled and a predetermined pressure level; and means for adjusting the position of the throttling element to eliminate the difference between the pressure of the fluid being controlled and the predetermined level.
means for sensing the pressure of the fluid being controlled;
means for determining the difference between the pressure of the fluid being controlled and a predetermined pressure level; and means for adjusting the position of the throttling element to eliminate the difference between the pressure of the fluid being controlled and the predetermined level.
16. A self adjusting pressure regulator comprising:
a body defining a fluid flow passage;
a throttling element movable within the flow passage for selectively restricting fluid flow through the flow passage;
a diaphragm coupled to the throttling element for selectively moving the throttling element, the diaphragm having a control side and a reference side;
an spring load coupled to the reference side of the diaphragm for biasing the diaphragm, and thus the throttling element, at a predetermined bias position;
a feedback line adapted to apply pressure from the fluid in the process to the control side of the diaphragm for moving the diaphragm, and thus the throttling element, to position the throttling element at a position corresponding to the pressure from the fluid;
a pressure sensor that provides an electrical signal indicative of the sensed pressure of the fluid;
an electronic controller that receives the electrical signal indicative of the sensed pressure of the fluid and compares that signal with an electrical signal indicative of a desired fluid pressure, the electronic controller generating an electrical error signal that varies with the difference between the electrical signal indicative of the sensed pressure and the electrical signal indicative of the desired fluid pressure; and a current to pressure transducer having an input adapted to receive the electrical error signal and an output adapted to provide a variable pneumatic pressure to the reference side of the diaphragm, wherein the variable pneumatic pressure provided by the current to pressure transducer varies with the electrical signal.
a body defining a fluid flow passage;
a throttling element movable within the flow passage for selectively restricting fluid flow through the flow passage;
a diaphragm coupled to the throttling element for selectively moving the throttling element, the diaphragm having a control side and a reference side;
an spring load coupled to the reference side of the diaphragm for biasing the diaphragm, and thus the throttling element, at a predetermined bias position;
a feedback line adapted to apply pressure from the fluid in the process to the control side of the diaphragm for moving the diaphragm, and thus the throttling element, to position the throttling element at a position corresponding to the pressure from the fluid;
a pressure sensor that provides an electrical signal indicative of the sensed pressure of the fluid;
an electronic controller that receives the electrical signal indicative of the sensed pressure of the fluid and compares that signal with an electrical signal indicative of a desired fluid pressure, the electronic controller generating an electrical error signal that varies with the difference between the electrical signal indicative of the sensed pressure and the electrical signal indicative of the desired fluid pressure; and a current to pressure transducer having an input adapted to receive the electrical error signal and an output adapted to provide a variable pneumatic pressure to the reference side of the diaphragm, wherein the variable pneumatic pressure provided by the current to pressure transducer varies with the electrical signal.
17. The self adjusting pressure regulator of claim 16 wherein the electronic controller includes a communications circuit and a memory, and wherein the controller is adapted to receive through the communications circuit an electrical signal representing the desired fluid pressure and to store a digital representation of that electrical signal in the memory.
18. The self adjusting pressure regulator of claim 16 further comprising a power source for supplying electrical power to the electronic controller and the current to pressure transducer.
19. The self adjusting pressure regulator of claim 18 wherein the power source comprises a solar panel and a battery system energized by the solar panel.
20. The pressure regulator of claim 16 wherein the pressure regulator further defines an input port in fluid connection with the fluid passage and an output port in fluid connection with the passage, wherein the input port is adapted to receive fluid at a pressure greater than the pressure of the fluid at the outlet port, and wherein the feedback line applies pressure from the outlet port to the control side of the diaphragm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2668314 CA2668314C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
| CA 2668315 CA2668315C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/934,943 | 1997-09-22 | ||
| US08/934,943 US6056008A (en) | 1997-09-22 | 1997-09-22 | Intelligent pressure regulator |
| PCT/US1998/018928 WO1999015942A1 (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2668315 Division CA2668315C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
| CA 2668314 Division CA2668314C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2302607A1 true CA2302607A1 (en) | 1999-04-01 |
| CA2302607C CA2302607C (en) | 2010-07-20 |
Family
ID=25466313
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2302607 Expired - Lifetime CA2302607C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
| CA 2668315 Expired - Lifetime CA2668315C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
| CA 2668314 Expired - Lifetime CA2668314C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2668315 Expired - Lifetime CA2668315C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
| CA 2668314 Expired - Lifetime CA2668314C (en) | 1997-09-22 | 1998-09-10 | Intelligent pressure regulator |
Country Status (10)
| Country | Link |
|---|---|
| US (2) | US6056008A (en) |
| EP (1) | EP1015950B1 (en) |
| JP (2) | JP2001517821A (en) |
| CN (1) | CN1147767C (en) |
| AT (1) | ATE256883T1 (en) |
| AU (1) | AU9478198A (en) |
| BR (1) | BR9812378C1 (en) |
| CA (3) | CA2302607C (en) |
| DE (1) | DE69820653T2 (en) |
| WO (1) | WO1999015942A1 (en) |
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Also Published As
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| BR9812378B1 (en) | 2011-02-08 |
| CA2668315A1 (en) | 1999-04-01 |
| EP1015950B1 (en) | 2003-12-17 |
| US6056008A (en) | 2000-05-02 |
| JP5503606B2 (en) | 2014-05-28 |
| DE69820653D1 (en) | 2004-01-29 |
| CA2668315C (en) | 2014-12-09 |
| DE69820653T2 (en) | 2004-09-30 |
| BR9812378A (en) | 2000-09-12 |
| ATE256883T1 (en) | 2004-01-15 |
| CA2302607C (en) | 2010-07-20 |
| CN1271431A (en) | 2000-10-25 |
| CA2668314A1 (en) | 1999-04-01 |
| EP1015950A1 (en) | 2000-07-05 |
| US6178997B1 (en) | 2001-01-30 |
| WO1999015942A9 (en) | 1999-06-03 |
| JP2001517821A (en) | 2001-10-09 |
| CA2668314C (en) | 2014-06-03 |
| BR9812378C1 (en) | 2011-05-31 |
| CN1147767C (en) | 2004-04-28 |
| WO1999015942A1 (en) | 1999-04-01 |
| JP2011258226A (en) | 2011-12-22 |
| AU9478198A (en) | 1999-04-12 |
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